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Initial commit: NCal, a native Nextcloud CalDAV client for Android 

One app for both events and tasks, talking directly to Nextcloud's CalDAV
endpoint - no DAVx5, no Google Play Services, no third-party services.
Encrypted at rest (SQLCipher DB, EncryptedSharedPreferences, Keystore-backed
widget state), HTTPS-only networking, home screen widgets, reminders,
subtasks, and full VTODO field support (status/priority/%complete/location/url).
This commit is contained in:
RomanNum3ral 2026-07-16 18:19:03 -04:00
commit 75f5e6024b
64 changed files with 5744 additions and 0 deletions
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# Claude Code session-local config - not part of the project
.claude/
# Release signing - never commit these (see ncal/.gitignore for the enforced copy)
/ncal/keystore/
/ncal/keystore.properties

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GNU GENERAL PUBLIC LICENSE
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might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

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# NCal
A native Android app that talks **directly to Nextcloud's CalDAV endpoint** — no
DAVx⁵, no separate tasks app, no Android Calendar/Tasks Provider in the middle. One
app, full CRUD, for both events and tasks, plus subtasks, reminders, and home screen
widgets — built to run on phones with **no Google Play Services at all**.
The Android project lives in [`ncal/`](ncal/); open that folder in Android Studio.
## Why this exists
No mainstream Android app natively renders both `VEVENT` (events) and `VTODO` (tasks)
from CalDAV in one UI. DAVx⁵ + Etar + Tasks.org gets you three apps for one job. This
is the fourth option: one app, one account, one sync engine.
## Privacy & security
- **No Google Play Services, anywhere.** Sync, reminders, and the home screen widgets
all use plain AOSP/AndroidX APIs (`AlarmManager`, `NotificationManager`,
`androidx.glance`, `androidx.work`) — every one of these is a core platform
capability, not a Google service, so the app runs unmodified on GrapheneOS,
LineageOS, or any other de-googled ROM.
- **No analytics, crash reporting, or ad SDKs.** Check `ncal/app/build.gradle.kts` —
every dependency is either AndroidX/Jetpack, OkHttp, or `biweekly` (iCalendar
parsing). Nothing phones home to a vendor.
- **No third-party server.** The only network calls in the app go to whatever
Nextcloud server URL *you* enter at login (`data/network/CalDavClient.kt`). There is
no hardcoded third-party endpoint anywhere in the source.
- **Everything is encrypted at rest.** Server URL, username, and app password live in
`EncryptedSharedPreferences` (`data/prefs/SecurePrefs.kt`, AES-256-GCM/SIV via an
Android Keystore-backed `MasterKey`). The local Room cache itself is an
SQLCipher-encrypted database (`ncal_encrypted.db`), not plain SQLite — nothing the
app writes to disk, including the widgets' own tiny bit of navigation state, is ever
unencrypted. `android:allowBackup="false"` also keeps Android's cloud backup from
ever exporting any of it off-device.
- **HTTPS only.** `usesCleartextTraffic="false"` blocks plain HTTP at the OS network
layer, and the login screen always normalizes whatever you type to `https://`.
- **Local-first.** The calendar/task cache is a local, encrypted database. It exists
purely so the UI renders instantly and works offline; the server is always the
source of truth on next sync.
## Features
- **Agenda** — unified, day-grouped list of events *and* tasks. Syncs automatically
every time the app is opened, plus pull to refresh any time.
- **Month view** — a full calendar grid with events rendered as spanning colored
pills and tasks as dot + text, exactly mirroring what's on the home screen widget
(they share the same layout algorithm). Tap a day to see its agenda below the grid.
- **Tasks** — dedicated checklist view. Tasks render as an indented tree under their
parent, not a flat list.
- **Subtasks** — assign any task a parent task (stored as the standard iCalendar
`RELATED-TO` property, so it round-trips with Nextcloud's own Tasks app and other
CalDAV clients). The parent picker excludes the task itself and its own descendants
to prevent cycles.
- **Reminders** — add one or more reminders to any event or task (at the scheduled
time, or a preset offset before it: 5 min up to 1 week). Reminders fire as real
system notifications via `AlarmManager` exact alarms — not a best-effort background
job — and survive reboots and app updates. Tapping a reminder notification opens
the app directly to that item.
- **Task status, priority, % complete, location, and URL** — full VTODO fields, not
just a completed checkbox: a proper status (Not started / In progress / Completed /
Cancelled), an iCal `PRIORITY` 1-9 picker color-coded 1-4 red/5 yellow/6-9 blue
(surfaced as the task's leading dot everywhere it's shown — Tasks list, Month view,
both widgets), a 0-100% completion slider, and location/URL fields shared with
events.
- **Home screen widgets** (see below).
- **Calendars** — pick which calendars/task-lists sync, mirroring what you'd see in
Nextcloud's own sidebar.
- **Recurring events and tasks** — `RRULE` (`FREQ=DAILY/WEEKLY/MONTHLY/YEARLY` with
`INTERVAL`/`COUNT`/`UNTIL`) is evaluated client-side to re-date each item to its
next upcoming occurrence. See "Known limitations" below for what this doesn't cover.
## Home screen widgets
Two widgets, built with Jetpack Glance (`androidx.glance:glance-appwidget`), which
compiles down to plain `RemoteViews`/`AppWidgetProvider` — no Google dependency:
- **Month grid widget** ("Calendar Month" in the widget picker) — the exact same
month view as the in-app Month screen (shared layout code in
`util/MonthGridLayout.kt`), with ‹ › month navigation and tap-to-open on any event
or task. Resizable, and fonts/day-circle size/event-lane count all scale up when
you make the widget bigger instead of leaving blank space.
- **Next Tasks widget** ("Tasks" in the widget picker) — a scrollable list of
incomplete tasks grouped and ordered by due date, with a tap-to-complete circle on
each row (color-coded by priority) and tap-to-open on the row itself.
Both widgets refresh automatically whenever you sync, save, or delete something in
the app — no manual refresh needed. Note this means a widget's content is only as
fresh as the last time the app itself synced (on open, on manual pull-to-refresh, or
after an edit) — the widgets read from the local cache on their own ~30-minute OS
redraw timer, they don't independently hit the network.
## Architecture
- **Kotlin + Jetpack Compose (Material 3)**, MVVM, single-activity, no DI framework
(`ui/ViewModelFactory.kt` is a small hand-rolled factory instead).
- **`CalDavClient`** (`data/network/`) — hand-rolled CalDAV client over OkHttp. Speaks
`PROPFIND` (discover calendars/task-lists), `REPORT` (`calendar-query` to fetch
`VEVENT`/`VTODO`), and `PUT`/`DELETE` with `If-Match`/`If-None-Match` for safe,
conflict-aware writes. Every successful `PUT` captures the server's returned `ETag`
so the next edit doesn't race against a stale local copy.
- **`biweekly`** — parses/generates the actual iCalendar (RFC 5545) payloads,
including `VALARM` (reminders) and `RELATED-TO` (subtasks).
- **Room, on an SQLCipher-encrypted database** (`data/db/`) — local cache so every
screen (and both widgets) render instantly and survive being offline, without ever
touching disk unencrypted.
- **`NextcloudRepository`** — single source of truth gluing the network client, the
DB, reminder scheduling, and widget refresh together. Every screen reads from Room
`Flow`s; every write goes through `save()`/`delete()`, which do the network call
first, then update the cache, reminders, and widgets.
- **`ReminderScheduler`** (`notifications/`) — schedules one exact `AlarmManager`
alarm per item, always for its *next* upcoming reminder offset; the receiver
re-arms the following offset each time it fires, so there's never more than one
pending alarm per item to track.
- **`MonthGridWidget` / `NextTasksWidget`** (`widget/`) — Glance widgets that read
straight from the same repository the app uses.
## Setup
1. **Create a Nextcloud app password** — not your real login password.
Settings → Security → Devices & sessions → Create new app password.
2. **Open `ncal/` in Android Studio** (Koala/2024.1 or newer). Let it sync Gradle.
3. Run on a device or emulator (min SDK 26 / Android 8+).
4. On first launch, enter your server URL, username, and the app password.
5. Go to the **Calendars** screen (gear icon) and confirm which calendars/task-lists
are enabled.
6. Optional: long-press your home screen → Widgets → NCal, then add "Calendar Month"
and/or "Tasks".
## Known limitations
- **Editing an existing recurring item drops its `RRULE`.** Saving rebuilds the
`.ics` from the edit form's fields, so an edited recurring item becomes a one-off.
Viewing/completing/deleting a recurring item is safe; editing its fields is not,
if you want the series to survive the save. `CalendarItem.rawIcs` retains the
original document for exactly this reason — wiring `toIcs()` to mutate the parsed
original in place is the natural fix if this turns out to matter in practice.
- **No recurrence-editing UI** — no picker to *set* a recurrence rule on a new item.
- **Subtask tree is app-side only.** The Month view and both widgets show tasks
flat/chronological, not nested — only the in-app Tasks screen renders the parent/
child tree.
- **No background sync while the app is closed.** Sync happens on app open, manual
pull-to-refresh, or after an edit — there's no periodic `WorkManager` job calling
`repository.fullSync()` yet, so a widget can go stale if you never open the app.
- **Last-write-wins conflict handling.** A genuinely stale write fails loudly (a
`CalDavException` with the HTTP code) rather than silently clobbering a change made
elsewhere — but there's no merge UI, just an error surfaced to the edit screen.
## Where to look first if you want to extend it
- `data/network/CalDavClient.kt` — all server communication.
- `util/IcsMapper.kt` — the iCalendar ⇄ app-model translation layer (events, tasks,
subtasks, reminders).
- `util/MonthGridLayout.kt` — the month-grid layout algorithm shared by the in-app
Month screen and the month widget.
- `data/repository/NextcloudRepository.kt` — the sync/cache/reminder/widget
orchestration.
- `notifications/ReminderScheduler.kt` — reminder alarm scheduling.
- `widget/` — the two Glance home screen widgets.
## Building a signed release
`ncal/app/build.gradle.kts` reads signing credentials from a git-ignored
`ncal/keystore.properties` (`storePassword`, `keyPassword`, `keyAlias`, `storeFile`) —
generate your own keystore and fill that file in; nothing under `ncal/keystore/` or
`ncal/keystore.properties` is tracked by git, and no signing key ships in this repo.
Without that file present, `:app:assembleRelease` still produces an **unsigned** APK.
## License
GPL-3.0 — see [`LICENSE`](LICENSE).

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*.iml
.gradle/
/local.properties
.idea/
.DS_Store
/build
/captures
.externalNativeBuild
.cxx
local.properties
/app/build
# Release signing - never commit these
/keystore/
/keystore.properties

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import java.io.FileInputStream
import java.util.Properties
plugins {
id("com.android.application")
id("org.jetbrains.kotlin.android")
id("com.google.devtools.ksp")
}
val keystorePropertiesFile = rootProject.file("keystore.properties")
val keystoreProperties = Properties().apply {
if (keystorePropertiesFile.exists()) load(FileInputStream(keystorePropertiesFile))
}
android {
namespace = "com.homelab.ncal"
compileSdk = 34
defaultConfig {
applicationId = "com.homelab.ncal"
minSdk = 26
targetSdk = 34
versionCode = 1
versionName = "1.0"
}
signingConfigs {
create("release") {
if (keystorePropertiesFile.exists()) {
storeFile = rootProject.file(keystoreProperties["storeFile"] as String)
storePassword = keystoreProperties["storePassword"] as String
keyAlias = keystoreProperties["keyAlias"] as String
keyPassword = keystoreProperties["keyPassword"] as String
}
}
}
buildTypes {
release {
isMinifyEnabled = false
proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
signingConfig = signingConfigs.getByName("release")
}
}
compileOptions {
sourceCompatibility = JavaVersion.VERSION_17
targetCompatibility = JavaVersion.VERSION_17
}
kotlinOptions {
jvmTarget = "17"
}
buildFeatures {
compose = true
}
composeOptions {
kotlinCompilerExtensionVersion = "1.5.14"
}
packaging {
resources {
excludes += "/META-INF/{AL2.0,LGPL2.1}"
}
}
}
dependencies {
implementation("androidx.core:core-ktx:1.13.1")
implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.8.3")
implementation("androidx.lifecycle:lifecycle-viewmodel-compose:2.8.3")
implementation("androidx.activity:activity-compose:1.9.0")
// Compose
implementation(platform("androidx.compose:compose-bom:2024.09.00"))
implementation("androidx.compose.ui:ui")
implementation("androidx.compose.ui:ui-graphics")
implementation("androidx.compose.ui:ui-tooling-preview")
implementation("androidx.compose.material3:material3")
implementation("androidx.compose.material:material-icons-extended")
debugImplementation("androidx.compose.ui:ui-tooling")
// Navigation
implementation("androidx.navigation:navigation-compose:2.7.7")
// Room
implementation("androidx.room:room-runtime:2.6.1")
implementation("androidx.room:room-ktx:2.6.1")
ksp("androidx.room:room-compiler:2.6.1")
// Networking (CalDAV/WebDAV over HTTP)
implementation("com.squareup.okhttp3:okhttp:4.12.0")
// iCalendar (RFC 5545) parsing/generation for VEVENT/VTODO
implementation("net.sf.biweekly:biweekly:0.6.8")
// Encrypted storage for server credentials
implementation("androidx.security:security-crypto:1.1.0-alpha06")
// Coroutines
implementation("org.jetbrains.kotlinx:kotlinx-coroutines-android:1.8.1")
// WorkManager - required transitively by Glance's own widget-scheduling machinery;
// declared explicitly to pin a current version rather than Glance's older transitive default.
implementation("androidx.work:work-runtime-ktx:2.9.0")
// Home screen widget (month calendar)
implementation("androidx.glance:glance-appwidget:1.1.1")
// Encrypts the local Room cache at rest (calendar/task content), same as credentials already are
implementation("net.zetetic:android-database-sqlcipher:4.5.4")
}

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# Add project specific ProGuard rules here.
-keep class biweekly.** { *; }
-dontwarn biweekly.**

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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
<uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM" />
<uses-permission android:name="android.permission.USE_EXACT_ALARM" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<application
android:name=".NcalApplication"
android:allowBackup="false"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/Theme.NCal"
android:usesCleartextTraffic="false">
<activity
android:name=".MainActivity"
android:exported="true"
android:launchMode="singleTask"
android:theme="@style/Theme.NCal"
android:windowSoftInputMode="adjustResize">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver
android:name=".notifications.ReminderReceiver"
android:exported="false" />
<receiver
android:name=".notifications.BootReceiver"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="android.intent.action.MY_PACKAGE_REPLACED" />
</intent-filter>
</receiver>
<receiver
android:name=".widget.MonthGridWidgetReceiver"
android:exported="false"
android:label="@string/month_grid_widget_label">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<meta-data
android:name="android.appwidget.provider"
android:resource="@xml/month_grid_widget_info" />
</receiver>
<receiver
android:name=".widget.NextTasksWidgetReceiver"
android:exported="false"
android:label="@string/next_tasks_widget_label">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<meta-data
android:name="android.appwidget.provider"
android:resource="@xml/next_tasks_widget_info" />
</receiver>
</application>
</manifest>

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package com.homelab.ncal
import android.Manifest
import android.content.Intent
import android.os.Build
import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.activity.enableEdgeToEdge
import androidx.activity.result.contract.ActivityResultContracts
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.material3.Surface
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.setValue
import androidx.compose.ui.Modifier
import com.homelab.ncal.ui.nav.NcalNavGraph
import com.homelab.ncal.ui.theme.NCalTheme
class MainActivity : ComponentActivity() {
private var pendingDeepLink by mutableStateOf<Pair<String, String>?>(null)
private val requestNotificationPermission =
registerForActivityResult(ActivityResultContracts.RequestPermission()) { }
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
enableEdgeToEdge()
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
requestNotificationPermission.launch(Manifest.permission.POST_NOTIFICATIONS)
}
pendingDeepLink = deepLinkFrom(intent)
setContent {
NCalTheme {
Surface(modifier = Modifier.fillMaxSize()) {
NcalNavGraph(
app = application as NcalApplication,
pendingDeepLink = pendingDeepLink,
onDeepLinkConsumed = { pendingDeepLink = null }
)
}
}
}
}
override fun onNewIntent(intent: Intent) {
super.onNewIntent(intent)
setIntent(intent)
pendingDeepLink = deepLinkFrom(intent)
}
private fun deepLinkFrom(intent: Intent?): Pair<String, String>? {
val type = intent?.getStringExtra(EXTRA_ITEM_TYPE) ?: return null
val href = intent.getStringExtra(EXTRA_ITEM_HREF) ?: return null
return type to href
}
companion object {
const val EXTRA_ITEM_TYPE = "item_type"
const val EXTRA_ITEM_HREF = "item_href"
}
}

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package com.homelab.ncal
import android.app.Application
import android.app.NotificationChannel
import android.app.NotificationManager
import androidx.glance.appwidget.updateAll
import com.homelab.ncal.data.repository.NextcloudRepository
import com.homelab.ncal.notifications.CHANNEL_ID
import com.homelab.ncal.notifications.ReminderScheduler
import com.homelab.ncal.widget.MonthGridWidget
import com.homelab.ncal.widget.NextTasksWidget
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
import net.sqlcipher.database.SQLiteDatabase
class NcalApplication : Application() {
lateinit var repository: NextcloudRepository
private set
override fun onCreate() {
super.onCreate()
SQLiteDatabase.loadLibs(this)
deleteObsoletePlaintextDatabase()
repository = NextcloudRepository(this)
createReminderNotificationChannel()
if (repository.isLoggedIn) {
CoroutineScope(Dispatchers.IO).launch {
ReminderScheduler.rescheduleAll(this@NcalApplication, repository.allCachedItems())
MonthGridWidget().updateAll(this@NcalApplication)
NextTasksWidget().updateAll(this@NcalApplication)
}
}
}
/** The DB moved to an encrypted file (`ncal_encrypted.db`) - the old plaintext copy would
* otherwise sit on disk unencrypted and unused, which defeats the point of switching. */
private fun deleteObsoletePlaintextDatabase() {
deleteDatabase("ncal.db")
}
private fun createReminderNotificationChannel() {
val channel = NotificationChannel(
CHANNEL_ID,
"Reminders",
NotificationManager.IMPORTANCE_HIGH
).apply {
description = "Event and task reminders"
}
getSystemService(NotificationManager::class.java).createNotificationChannel(channel)
}
}

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package com.homelab.ncal.data.db
import android.content.Context
import androidx.room.Database
import androidx.room.Room
import androidx.room.RoomDatabase
import net.sqlcipher.database.SupportFactory
@Database(
entities = [CollectionEntity::class, ItemEntity::class],
version = 4,
exportSchema = false
)
abstract class AppDatabase : RoomDatabase() {
abstract fun collectionDao(): CollectionDao
abstract fun itemDao(): ItemDao
companion object {
@Volatile private var instance: AppDatabase? = null
/** [passphrase] encrypts the database file at rest via SQLCipher - see [com.homelab.ncal.data.prefs.SecurePrefs.databaseKey]. */
fun get(context: Context, passphrase: ByteArray): AppDatabase =
instance ?: synchronized(this) {
instance ?: Room.databaseBuilder(
context.applicationContext,
AppDatabase::class.java,
"ncal_encrypted.db"
)
.openHelperFactory(SupportFactory(passphrase))
.fallbackToDestructiveMigration()
.build().also { instance = it }
}
}
}

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package com.homelab.ncal.data.db
import androidx.room.Dao
import androidx.room.Entity
import androidx.room.PrimaryKey
import androidx.room.Query
import androidx.room.Upsert
import kotlinx.coroutines.flow.Flow
@Entity(tableName = "collections")
data class CollectionEntity(
@PrimaryKey val url: String,
val displayName: String,
val colorHex: String?,
val supportsEvents: Boolean,
val supportsTasks: Boolean,
val ctag: String?,
val enabled: Boolean = true
)
@Dao
interface CollectionDao {
@Query("SELECT * FROM collections ORDER BY displayName")
fun observeAll(): Flow<List<CollectionEntity>>
@Query("SELECT * FROM collections")
suspend fun getAll(): List<CollectionEntity>
@Upsert
suspend fun upsertAll(collections: List<CollectionEntity>)
@Query("UPDATE collections SET enabled = :enabled WHERE url = :url")
suspend fun setEnabled(url: String, enabled: Boolean)
@Query("DELETE FROM collections WHERE url NOT IN (:keepUrls)")
suspend fun pruneMissing(keepUrls: List<String>)
}

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package com.homelab.ncal.data.db
import androidx.room.Dao
import androidx.room.Entity
import androidx.room.PrimaryKey
import androidx.room.Query
import androidx.room.Upsert
import kotlinx.coroutines.flow.Flow
@Entity(tableName = "items")
data class ItemEntity(
@PrimaryKey val href: String,
val uid: String,
val etag: String?,
val calendarUrl: String,
val type: String, // "EVENT" | "TASK"
val summary: String,
val description: String,
val location: String,
val url: String,
val start: Long?,
val end: Long?,
val allDay: Boolean,
val due: Long?,
val completed: Boolean,
val status: String, // TaskStatus name, tasks only
val percentComplete: Int,
val priority: Int,
val parentUid: String?,
val reminderMinutes: String, // comma-separated minutes-before list, "" if none
val rawIcs: String?
)
@Dao
interface ItemDao {
@Query("SELECT * FROM items WHERE calendarUrl IN (:calendarUrls) ORDER BY COALESCE(start, due) ASC")
fun observeForCalendars(calendarUrls: List<String>): Flow<List<ItemEntity>>
@Query("SELECT * FROM items WHERE type = 'TASK' AND calendarUrl IN (:calendarUrls) ORDER BY completed ASC, COALESCE(due, 9223372036854775807) ASC")
fun observeTasks(calendarUrls: List<String>): Flow<List<ItemEntity>>
@Query("SELECT * FROM items WHERE type = 'EVENT' AND calendarUrl IN (:calendarUrls) ORDER BY start ASC")
fun observeEvents(calendarUrls: List<String>): Flow<List<ItemEntity>>
@Query("SELECT * FROM items WHERE href = :href LIMIT 1")
suspend fun getByHref(href: String): ItemEntity?
@Query("SELECT * FROM items")
suspend fun getAllOnce(): List<ItemEntity>
@Upsert
suspend fun upsertAll(items: List<ItemEntity>)
@Upsert
suspend fun upsert(item: ItemEntity)
@Query("DELETE FROM items WHERE href = :href")
suspend fun deleteByHref(href: String)
@Query("DELETE FROM items WHERE calendarUrl = :calendarUrl AND href NOT IN (:keepHrefs)")
suspend fun pruneMissing(calendarUrl: String, keepHrefs: List<String>)
}

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package com.homelab.ncal.data.model
/**
* A single CalDAV collection on the server, e.g.
* https://nextcloud.example.com/remote.php/dav/calendars/anon/personal/
*
* A collection can support VEVENT (calendar), VTODO (task list), or both,
* depending on how it was created ("New calendar" vs "New calendar with task list").
*/
data class CalendarCollection(
val url: String,
val displayName: String,
val colorHex: String?,
val supportsEvents: Boolean,
val supportsTasks: Boolean,
val ctag: String?,
val enabled: Boolean = true
)

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package com.homelab.ncal.data.model
enum class ItemType { EVENT, TASK }
/** Mirrors the iCalendar VTODO STATUS values (tasks only). */
enum class TaskStatus { NEEDS_ACTION, IN_PROCESS, COMPLETED, CANCELLED }
/**
* A single VEVENT or VTODO. Times are stored as epoch millis (UTC).
* [rawIcs] retains the full round-tripped iCalendar object so fields we don't
* explicitly model (RRULE, alarms, attendees, etc.) survive an edit-and-save cycle.
*/
data class CalendarItem(
val uid: String,
val href: String, // full resource URL, empty string for a not-yet-created item
val etag: String?, // null for a not-yet-created item
val calendarUrl: String, // which collection this belongs / will belong to
val type: ItemType,
val summary: String,
val description: String = "",
val location: String = "",
val url: String = "",
val start: Long? = null,
val end: Long? = null,
val allDay: Boolean = false,
val due: Long? = null, // tasks only
val completed: Boolean = false, // tasks only - kept in sync with [status] == COMPLETED
val status: TaskStatus = TaskStatus.NEEDS_ACTION, // tasks only
val percentComplete: Int = 0, // tasks only, 0-100
val priority: Int = 0, // 0 = undefined, 1 (high) .. 9 (low), iCal convention
val parentUid: String? = null, // tasks only: UID of the parent task (iCal RELATED-TO)
val reminderMinutes: List<Int> = emptyList(), // minutes before start (events) / due (tasks) to notify
val rawIcs: String? = null
) {
val isNew: Boolean get() = href.isEmpty()
/** Sets task completion consistently across [status]/[completed]/[percentComplete] so they never drift. */
fun withStatus(newStatus: TaskStatus): CalendarItem = copy(
status = newStatus,
completed = newStatus == TaskStatus.COMPLETED,
percentComplete = if (newStatus == TaskStatus.COMPLETED) 100 else percentComplete
)
}

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ncal/app/src/main/java/com/homelab/ncal/data/network/CalDavClient.kt Normal file
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package com.homelab.ncal.data.network
import okhttp3.Credentials
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.OkHttpClient
import okhttp3.Request
import okhttp3.RequestBody.Companion.toRequestBody
import java.io.IOException
import java.util.UUID
import java.util.concurrent.TimeUnit
class CalDavException(message: String, val httpCode: Int? = null) : IOException(message)
private val XML_MEDIA = "application/xml; charset=utf-8".toMediaType()
private val ICAL_MEDIA = "text/calendar; charset=utf-8".toMediaType()
/**
* Speaks just enough CalDAV/WebDAV to drive NCal: discover calendars under a user's
* calendar-home, list/fetch VEVENT+VTODO objects, and create/update/delete them.
*
* This intentionally targets Nextcloud's DAV layout directly
* (https://<server>/remote.php/dav/calendars/<user>/) rather than doing full
* RFC 4791 principal discovery, since that path is stable across Nextcloud versions.
*/
class CalDavClient(
private val serverUrl: String,
private val username: String,
private val appPassword: String
) {
private val http = OkHttpClient.Builder()
.connectTimeout(20, TimeUnit.SECONDS)
.readTimeout(30, TimeUnit.SECONDS)
.writeTimeout(30, TimeUnit.SECONDS)
.build()
private val authHeader = Credentials.basic(username, appPassword)
val calendarHomeUrl: String
get() = "${serverUrl.trimEnd('/')}/remote.php/dav/calendars/$username/"
/** Verifies the credentials/URL by attempting to list the calendar home. */
fun testConnection() {
discoverCollections()
}
/** Lists all calendars/task-lists under the user's calendar home. */
fun discoverCollections(): List<DavResponse> {
val body = """<?xml version="1.0" encoding="UTF-8"?>
<d:propfind xmlns:d="DAV:" xmlns:cs="http://calendarserver.org/ns/" xmlns:c="urn:ietf:params:xml:ns:caldav" xmlns:apple="http://apple.com/ns/ical/">
<d:prop>
<d:resourcetype/>
<d:displayname/>
<cs:getctag/>
<c:supported-calendar-component-set/>
<apple:calendar-color/>
</d:prop>
</d:propfind>""".trimIndent()
val response = execute(calendarHomeUrl, "PROPFIND", body, mapOf("Depth" to "1"))
val all = DavXml.parseMultistatus(response)
android.util.Log.d("NCalDiscovery", "PROPFIND to $calendarHomeUrl returned ${all.size} raw response(s):")
all.forEach { dav ->
android.util.Log.d(
"NCalDiscovery",
" href=${dav.href} displayName=${dav.displayName} resourceTypes=${dav.resourceTypes} supportedComponents=${dav.supportedComponents}"
)
}
// Drop the home collection itself and Nextcloud's internal inbox/outbox/trashbin.
// Prefer the 'calendar' resourcetype marker, but fall back to "has real
// supported-components" - some calendars (created outside Nextcloud's own "New
// calendar" UI, e.g. imported or created via a raw CalDAV client) come back
// without the resourcetype marker even though they're perfectly valid VEVENT/
// VTODO collections. The system collections always report empty components, so
// this fallback doesn't risk pulling in anything that isn't a real calendar.
val filtered = all.filter {
(it.resourceTypes.contains("calendar") || it.supportedComponents.isNotEmpty()) &&
!it.href.trimEnd('/').endsWith(username)
}
val dropped = all - filtered.toSet()
if (dropped.isNotEmpty()) {
android.util.Log.d("NCalDiscovery", "Filtered OUT ${dropped.size} response(s) (no 'calendar' resourcetype, or is the home collection itself):")
dropped.forEach { android.util.Log.d("NCalDiscovery", " dropped href=${it.href} resourceTypes=${it.resourceTypes}") }
}
return filtered
}
/** Fetches raw iCalendar data for every VEVENT (or VTODO) object in a collection within [start, end]. */
fun fetchItems(collectionUrl: String, component: String, start: java.util.Date, end: java.util.Date): List<DavResponse> {
val body = """<?xml version="1.0" encoding="UTF-8"?>
<c:calendar-query xmlns:d="DAV:" xmlns:c="urn:ietf:params:xml:ns:caldav">
<d:prop>
<d:getetag/>
<c:calendar-data/>
</d:prop>
<c:filter>
<c:comp-filter name="VCALENDAR">
<c:comp-filter name="$component">
<c:time-range start="${formatIcsUtc(start)}" end="${formatIcsUtc(end)}"/>
</c:comp-filter>
</c:comp-filter>
</c:filter>
</c:calendar-query>""".trimIndent()
val response = execute(collectionUrl, "REPORT", body, mapOf("Depth" to "1"))
return DavXml.parseMultistatus(response).filter { it.calendarData != null }
}
/**
* Fetches every object of [component] with no time bound. Used for VTODO: a time-range
* filter can exclude tasks that have neither DTSTART nor DUE set (RFC 4791 \u00a79.9), which
* would silently drop plain undated checklist-style tasks - common enough that it's not
* worth the tradeoff just to bound the query.
*/
fun fetchItems(collectionUrl: String, component: String): List<DavResponse> {
val body = """<?xml version="1.0" encoding="UTF-8"?>
<c:calendar-query xmlns:d="DAV:" xmlns:c="urn:ietf:params:xml:ns:caldav">
<d:prop>
<d:getetag/>
<c:calendar-data/>
</d:prop>
<c:filter>
<c:comp-filter name="VCALENDAR">
<c:comp-filter name="$component"/>
</c:comp-filter>
</c:filter>
</c:calendar-query>""".trimIndent()
val response = execute(collectionUrl, "REPORT", body, mapOf("Depth" to "1"))
return DavXml.parseMultistatus(response).filter { it.calendarData != null }
}
private fun formatIcsUtc(date: java.util.Date): String {
val fmt = java.text.SimpleDateFormat("yyyyMMdd'T'HHmmss'Z'", java.util.Locale.US)
fmt.timeZone = java.util.TimeZone.getTimeZone("UTC")
return fmt.format(date)
}
/** Creates a new object. Returns the href it was created at. */
/** Returns the href and the new etag the server assigned (if it returned one). */
fun createItem(collectionUrl: String, ics: String, uid: String = UUID.randomUUID().toString()): Pair<String, String?> {
val href = "${collectionUrl.trimEnd('/')}/$uid.ics"
val request = Request.Builder()
.url(href)
.header("Authorization", authHeader)
.header("If-None-Match", "*")
.put(ics.toRequestBody(ICAL_MEDIA))
.build()
val etag = executeRawEtag(request, expectBodyOnError = true)
return href to etag
}
/**
* Updates an existing object. [etag] should be the last known etag for conflict safety.
* Returns the new etag the server assigned (if it returned one) - a PUT always changes the
* resource's etag server-side, so callers must persist this or every subsequent edit will
* 412 against the now-stale etag they still hold locally.
*/
fun updateItem(href: String, ics: String, etag: String?): String? {
val builder = Request.Builder()
.url(href)
.header("Authorization", authHeader)
.put(ics.toRequestBody(ICAL_MEDIA))
if (!etag.isNullOrBlank()) builder.header("If-Match", etag)
return executeRawEtag(builder.build(), expectBodyOnError = true)
}
fun deleteItem(href: String, etag: String?) {
val builder = Request.Builder()
.url(href)
.header("Authorization", authHeader)
.delete()
if (!etag.isNullOrBlank()) builder.header("If-Match", etag)
executeRaw(builder.build(), expectBodyOnError = true)
}
private fun execute(url: String, method: String, xmlBody: String, headers: Map<String, String>): String {
val builder = Request.Builder()
.url(url)
.header("Authorization", authHeader)
.header("Content-Type", "application/xml; charset=utf-8")
.method(method, xmlBody.toRequestBody(XML_MEDIA))
headers.forEach { (k, v) -> builder.header(k, v) }
val request = builder.build()
return executeRaw(request, expectBodyOnError = true) ?: ""
}
private fun executeRaw(request: Request, expectBodyOnError: Boolean): String? {
http.newCall(request).execute().use { resp ->
if (!resp.isSuccessful) {
val detail = if (expectBodyOnError) resp.body?.string()?.take(300) else null
throw CalDavException("HTTP ${resp.code} for ${request.method} ${request.url}: ${detail ?: resp.message}", resp.code)
}
return resp.body?.string()
}
}
/** Like [executeRaw], but returns the response's ETag header instead of its body. */
private fun executeRawEtag(request: Request, expectBodyOnError: Boolean): String? {
http.newCall(request).execute().use { resp ->
if (!resp.isSuccessful) {
val detail = if (expectBodyOnError) resp.body?.string()?.take(300) else null
throw CalDavException("HTTP ${resp.code} for ${request.method} ${request.url}: ${detail ?: resp.message}", resp.code)
}
return resp.header("ETag")
}
}
}

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ncal/app/src/main/java/com/homelab/ncal/data/network/DavXml.kt Normal file
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package com.homelab.ncal.data.network
import org.xmlpull.v1.XmlPullParser
import org.xmlpull.v1.XmlPullParserFactory
import java.io.StringReader
/** One <d:response> entry inside a <d:multistatus> WebDAV/CalDAV reply. */
data class DavResponse(
val href: String,
val displayName: String? = null,
val resourceTypes: Set<String> = emptySet(),
val supportedComponents: Set<String> = emptySet(),
val ctag: String? = null,
val etag: String? = null,
val colorHex: String? = null,
val calendarData: String? = null
)
/**
* Minimal streaming parser for WebDAV multistatus XML. We only pull the handful
* of properties NCal actually uses, ignoring namespaces beyond local-name matching
* (Nextcloud/sabre and other CalDAV servers are consistent enough about local names
* that this is reliable in practice, and it avoids pulling in a full XML DOM lib).
*
* IMPORTANT: a single <response> can contain multiple <propstat> blocks - one per
* distinct status code. A calendar that has, say, resourcetype/displayname but no
* custom calendar-color set will get its color property back in a *separate*
* <propstat> with status 404, alongside a 200 <propstat> for everything else the
* server does have. Status must be tracked per-propstat and merged only from the
* ones that succeeded - not as one flag for the whole <response> - or perfectly
* valid calendars/task-lists silently vanish depending on which propstat happens
* to be parsed last.
*/
object DavXml {
fun parseMultistatus(body: String): List<DavResponse> {
val factory = XmlPullParserFactory.newInstance()
factory.isNamespaceAware = true
val parser = factory.newPullParser()
parser.setInput(StringReader(body))
val responses = mutableListOf<DavResponse>()
// Response-level accumulators - only ever filled from a *successful* propstat.
var href: String? = null
var displayName: String? = null
val resourceTypes = mutableSetOf<String>()
val supportedComponents = mutableSetOf<String>()
var ctag: String? = null
var etag: String? = null
var colorHex: String? = null
var calendarData: String? = null
// Per-propstat scratch space, flushed into the accumulators above on </propstat>
// only if that propstat's status was 2xx.
var inPropstat = false
var propOk = true
var propDisplayName: String? = null
val propResourceTypes = mutableSetOf<String>()
val propSupportedComponents = mutableSetOf<String>()
var propCtag: String? = null
var propEtag: String? = null
var propColorHex: String? = null
var propCalendarData: String? = null
var event = parser.eventType
while (event != XmlPullParser.END_DOCUMENT) {
when (event) {
XmlPullParser.START_TAG -> {
when (parser.name) {
"response" -> {
href = null; displayName = null; ctag = null; etag = null
colorHex = null; calendarData = null
resourceTypes.clear(); supportedComponents.clear()
}
"propstat" -> {
inPropstat = true
propOk = true
propDisplayName = null; propCtag = null; propEtag = null
propColorHex = null; propCalendarData = null
propResourceTypes.clear(); propSupportedComponents.clear()
}
"href" -> href = parser.nextTextSafe()
"displayname" -> if (inPropstat) propDisplayName = parser.nextTextSafe()
"collection" -> if (inPropstat) propResourceTypes.add("collection")
"calendar" -> if (inPropstat) propResourceTypes.add("calendar")
"comp" -> if (inPropstat) parser.getAttributeValue(null, "name")?.let { propSupportedComponents.add(it) }
"getctag" -> if (inPropstat) propCtag = parser.nextTextSafe()
"getetag" -> if (inPropstat) propEtag = parser.nextTextSafe()
"calendar-color" -> if (inPropstat) propColorHex = parser.nextTextSafe()?.take(7)
"calendar-data" -> if (inPropstat) propCalendarData = parser.nextTextSafe()
"status" -> {
val status = parser.nextTextSafe() ?: ""
if (inPropstat) propOk = status.contains(" 2") // e.g. "HTTP/1.1 200 OK"
}
}
}
XmlPullParser.END_TAG -> {
when (parser.name) {
"propstat" -> {
if (propOk) {
propDisplayName?.let { displayName = it }
propCtag?.let { ctag = it }
propEtag?.let { etag = it }
propColorHex?.let { colorHex = it }
propCalendarData?.let { calendarData = it }
resourceTypes.addAll(propResourceTypes)
supportedComponents.addAll(propSupportedComponents)
}
inPropstat = false
}
"response" -> {
if (href != null) {
responses.add(
DavResponse(
href = href!!,
displayName = displayName,
resourceTypes = resourceTypes.toSet(),
supportedComponents = supportedComponents.toSet(),
ctag = ctag,
etag = etag,
colorHex = colorHex,
calendarData = calendarData
)
)
}
}
}
}
}
event = parser.next()
}
return responses
}
/** Reads the text content of the current element without throwing on empty elements. */
private fun XmlPullParser.nextTextSafe(): String? {
return try {
this.nextText()?.takeIf { it.isNotBlank() }
} catch (e: Exception) {
null
}
}
}

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ncal/app/src/main/java/com/homelab/ncal/data/prefs/SecurePrefs.kt Normal file
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package com.homelab.ncal.data.prefs
import android.content.Context
import android.content.SharedPreferences
import android.util.Base64
import androidx.security.crypto.EncryptedSharedPreferences
import androidx.security.crypto.MasterKey
import java.security.SecureRandom
/**
* Holds the Nextcloud server base URL + login used to build CalDAV requests.
* Use a per-user "app password" (Nextcloud Settings -> Security -> Devices & sessions
* -> Create new app password), never the account's real password.
*/
class SecurePrefs(context: Context) {
private val prefs: SharedPreferences by lazy {
val masterKey = MasterKey.Builder(context)
.setKeyScheme(MasterKey.KeyScheme.AES256_GCM)
.build()
EncryptedSharedPreferences.create(
context,
"ncal_secure_prefs",
masterKey,
EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
)
}
var serverUrl: String?
get() = prefs.getString(KEY_SERVER_URL, null)
set(value) = prefs.edit().putString(KEY_SERVER_URL, value).apply()
var username: String?
get() = prefs.getString(KEY_USERNAME, null)
set(value) = prefs.edit().putString(KEY_USERNAME, value).apply()
var appPassword: String?
get() = prefs.getString(KEY_APP_PASSWORD, null)
set(value) = prefs.edit().putString(KEY_APP_PASSWORD, value).apply()
/** Base URL for this user's CalDAV calendar home, e.g. https://host/remote.php/dav/calendars/anon/ */
val calendarHomeUrl: String?
get() {
val server = serverUrl?.trimEnd('/') ?: return null
val user = username ?: return null
return "$server/remote.php/dav/calendars/$user/"
}
val isLoggedIn: Boolean
get() = serverUrl != null && username != null && appPassword != null
/**
* Random passphrase for the local SQLCipher-encrypted Room database, generated once and
* kept in the same Keystore-backed encrypted prefs as the server credentials. Deliberately
* NOT cleared by [clear] - logging out shouldn't strand the local DB with an unrecoverable
* key, since a re-login should be able to read the same cache back.
*/
val databaseKey: ByteArray
get() {
val existing = prefs.getString(KEY_DB_KEY, null)
if (existing != null) return Base64.decode(existing, Base64.NO_WRAP)
val generated = ByteArray(32).also { SecureRandom().nextBytes(it) }
prefs.edit().putString(KEY_DB_KEY, Base64.encodeToString(generated, Base64.NO_WRAP)).apply()
return generated
}
/** Clears login state only - see [databaseKey] for why that survives a logout. */
fun clear() {
prefs.edit()
.remove(KEY_SERVER_URL)
.remove(KEY_USERNAME)
.remove(KEY_APP_PASSWORD)
.apply()
}
companion object {
private const val KEY_SERVER_URL = "server_url"
private const val KEY_USERNAME = "username"
private const val KEY_APP_PASSWORD = "app_password"
private const val KEY_DB_KEY = "database_key"
}
}

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ncal/app/src/main/java/com/homelab/ncal/data/repository/NextcloudRepository.kt Normal file
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package com.homelab.ncal.data.repository
import android.content.Context
import com.homelab.ncal.data.db.AppDatabase
import com.homelab.ncal.data.db.CollectionEntity
import com.homelab.ncal.data.db.ItemEntity
import com.homelab.ncal.data.model.CalendarCollection
import com.homelab.ncal.data.model.CalendarItem
import com.homelab.ncal.data.model.ItemType
import com.homelab.ncal.data.model.TaskStatus
import com.homelab.ncal.data.network.CalDavClient
import com.homelab.ncal.data.prefs.SecurePrefs
import com.homelab.ncal.notifications.ReminderScheduler
import com.homelab.ncal.util.IcsMapper
import com.homelab.ncal.widget.MonthGridWidget
import com.homelab.ncal.widget.NextTasksWidget
import androidx.glance.appwidget.updateAll
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.map
import kotlinx.coroutines.withContext
class NextcloudRepository(context: Context) {
private val appContext = context.applicationContext
private val prefs = SecurePrefs(context)
private val db = AppDatabase.get(context, prefs.databaseKey)
private fun client(): CalDavClient {
val server = prefs.serverUrl ?: error("Not logged in")
val user = prefs.username ?: error("Not logged in")
val pass = prefs.appPassword ?: error("Not logged in")
return CalDavClient(server, user, pass)
}
val isLoggedIn: Boolean get() = prefs.isLoggedIn
suspend fun login(serverUrl: String, username: String, appPassword: String) = withContext(Dispatchers.IO) {
// Throws CalDavException if the credentials/URL are bad.
CalDavClient(serverUrl, username, appPassword).testConnection()
prefs.serverUrl = serverUrl
prefs.username = username
prefs.appPassword = appPassword
}
fun logout() {
prefs.clear()
}
// ---------- Collections ----------
fun observeCollections(): Flow<List<CalendarCollection>> =
db.collectionDao().observeAll().map { list -> list.map { it.toModel() } }
suspend fun setCollectionEnabled(url: String, enabled: Boolean) =
db.collectionDao().setEnabled(url, enabled)
/** Refreshes the list of calendars/task-lists from the server. */
suspend fun syncCollections() = withContext(Dispatchers.IO) {
val remote = client().discoverCollections()
val existing = db.collectionDao().getAll().associateBy { it.url }
val entities = remote.map { dav ->
val comps = dav.supportedComponents
CollectionEntity(
url = dav.href.toAbsolute(),
displayName = dav.displayName ?: dav.href.trimEnd('/').substringAfterLast('/'),
colorHex = dav.colorHex,
supportsEvents = comps.isEmpty() || comps.contains("VEVENT"),
supportsTasks = comps.contains("VTODO"),
ctag = dav.ctag,
enabled = existing[dav.href.toAbsolute()]?.enabled ?: true
)
}
db.collectionDao().upsertAll(entities)
db.collectionDao().pruneMissing(entities.map { it.url })
}
// ---------- Items (events + tasks) ----------
fun observeItems(calendarUrls: List<String>): Flow<List<CalendarItem>> =
db.itemDao().observeForCalendars(calendarUrls).map { list -> list.map { it.toModel() } }
fun observeTasks(calendarUrls: List<String>): Flow<List<CalendarItem>> =
db.itemDao().observeTasks(calendarUrls).map { list -> list.map { it.toModel() } }
fun observeEvents(calendarUrls: List<String>): Flow<List<CalendarItem>> =
db.itemDao().observeEvents(calendarUrls).map { list -> list.map { it.toModel() } }
suspend fun itemByHref(href: String): CalendarItem? = withContext(Dispatchers.IO) {
db.itemDao().getByHref(href)?.toModel()
}
suspend fun allCachedItems(): List<CalendarItem> = withContext(Dispatchers.IO) {
db.itemDao().getAllOnce().map { it.toModel() }
}
/** Pulls fresh events + tasks for every enabled collection. */
suspend fun syncItems() = withContext(Dispatchers.IO) {
val c = client()
val collections = db.collectionDao().getAll().filter { it.enabled }
android.util.Log.d("NCalSync", "Syncing ${collections.size} enabled collection(s): ${collections.map { "${it.displayName}(events=${it.supportsEvents},tasks=${it.supportsTasks})" }}")
val startCal = java.util.Calendar.getInstance()
startCal.add(java.util.Calendar.DAY_OF_YEAR, -1)
val windowStart = startCal.time
val endCal = java.util.Calendar.getInstance()
endCal.add(java.util.Calendar.YEAR, 1)
val windowEnd = endCal.time
for (col in collections) {
val keepHrefs = mutableListOf<String>()
if (col.supportsEvents) {
val remote = c.fetchItems(col.url, "VEVENT", windowStart, windowEnd)
keepHrefs += remote.map { it.href.toAbsolute() }
val entities = remote.mapNotNull { dav ->
IcsMapper.parse(dav.calendarData!!, dav.href.toAbsolute(), dav.etag, col.url)?.toEntity()
}
android.util.Log.d("NCalSync", "${col.displayName}: fetched ${remote.size} VEVENT(s), parsed ${entities.size}")
db.itemDao().upsertAll(entities)
}
if (col.supportsTasks) {
val remote = c.fetchItems(col.url, "VTODO")
keepHrefs += remote.map { it.href.toAbsolute() }
val entities = remote.mapNotNull { dav ->
IcsMapper.parse(dav.calendarData!!, dav.href.toAbsolute(), dav.etag, col.url)?.toEntity()
}
android.util.Log.d("NCalSync", "${col.displayName}: fetched ${remote.size} VTODO(s), parsed ${entities.size}")
db.itemDao().upsertAll(entities)
}
if (col.supportsEvents || col.supportsTasks) {
db.itemDao().pruneMissing(col.url, keepHrefs)
}
}
ReminderScheduler.rescheduleAll(appContext, db.itemDao().getAllOnce().map { it.toModel() })
updateWidgets()
}
suspend fun fullSync() {
syncCollections()
syncItems()
}
/** Creates or updates an item both on the server and in the local cache. */
suspend fun save(item: CalendarItem): CalendarItem = withContext(Dispatchers.IO) {
val c = client()
val ics = IcsMapper.toIcs(item)
val saved = if (item.isNew) {
val (href, etag) = c.createItem(item.calendarUrl, ics, item.uid)
item.copy(href = href, etag = etag, rawIcs = ics)
} else {
val etag = c.updateItem(item.href, ics, item.etag)
item.copy(etag = etag, rawIcs = ics)
}
db.itemDao().upsert(saved.toEntity())
ReminderScheduler.reschedule(appContext, saved)
updateWidgets()
saved
}
suspend fun delete(item: CalendarItem) = withContext(Dispatchers.IO) {
if (!item.isNew) {
client().deleteItem(item.href, item.etag)
}
db.itemDao().deleteByHref(item.href)
ReminderScheduler.cancel(appContext, item)
updateWidgets()
}
suspend fun toggleTaskComplete(item: CalendarItem): CalendarItem =
save(item.withStatus(if (item.completed) TaskStatus.NEEDS_ACTION else TaskStatus.COMPLETED))
private suspend fun updateWidgets() {
MonthGridWidget().updateAll(appContext)
NextTasksWidget().updateAll(appContext)
}
// ---------- mapping helpers ----------
private fun CollectionEntity.toModel() = CalendarCollection(
url = url, displayName = displayName, colorHex = colorHex,
supportsEvents = supportsEvents, supportsTasks = supportsTasks, ctag = ctag, enabled = enabled
)
private fun ItemEntity.toModel() = CalendarItem(
uid = uid, href = href, etag = etag, calendarUrl = calendarUrl,
type = ItemType.valueOf(type), summary = summary, description = description, location = location, url = url,
start = start, end = end, allDay = allDay, due = due, completed = completed,
status = runCatching { TaskStatus.valueOf(status) }.getOrDefault(TaskStatus.NEEDS_ACTION),
percentComplete = percentComplete, priority = priority,
parentUid = parentUid, reminderMinutes = reminderMinutes.toMinutesList(), rawIcs = rawIcs
)
private fun CalendarItem.toEntity() = ItemEntity(
href = href, uid = uid, etag = etag, calendarUrl = calendarUrl, type = type.name,
summary = summary, description = description, location = location, url = url,
start = start, end = end, allDay = allDay, due = due, completed = completed,
status = status.name, percentComplete = percentComplete,
priority = priority, parentUid = parentUid, reminderMinutes = reminderMinutes.toCsv(), rawIcs = rawIcs
)
private fun String.toMinutesList(): List<Int> =
if (isBlank()) emptyList() else split(",").mapNotNull { it.trim().toIntOrNull() }
private fun List<Int>.toCsv(): String = joinToString(",")
/** Server sometimes returns relative hrefs; normalize against the calendar home. */
private fun String.toAbsolute(): String =
if (this.startsWith("http")) this else "${prefs.serverUrl?.trimEnd('/')}$this"
}

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ncal/app/src/main/java/com/homelab/ncal/notifications/BootReceiver.kt Normal file
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package com.homelab.ncal.notifications
import android.content.BroadcastReceiver
import android.content.Context
import android.content.Intent
import com.homelab.ncal.NcalApplication
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
/** Alarms don't survive a reboot or app update, so re-arm every cached item's reminder. */
class BootReceiver : BroadcastReceiver() {
override fun onReceive(context: Context, intent: Intent) {
val app = context.applicationContext as NcalApplication
if (!app.repository.isLoggedIn) return
val pendingResult = goAsync()
CoroutineScope(Dispatchers.IO).launch {
try {
ReminderScheduler.rescheduleAll(context, app.repository.allCachedItems())
} finally {
pendingResult.finish()
}
}
}
}

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ncal/app/src/main/java/com/homelab/ncal/notifications/ReminderReceiver.kt Normal file
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package com.homelab.ncal.notifications
import android.Manifest
import android.app.PendingIntent
import android.content.BroadcastReceiver
import android.content.Context
import android.content.Intent
import android.content.pm.PackageManager
import androidx.core.app.ActivityCompat
import androidx.core.app.NotificationCompat
import androidx.core.app.NotificationManagerCompat
import com.homelab.ncal.MainActivity
import com.homelab.ncal.NcalApplication
import com.homelab.ncal.R
import com.homelab.ncal.data.model.CalendarItem
import com.homelab.ncal.data.model.ItemType
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
import java.text.SimpleDateFormat
import java.util.Date
import java.util.Locale
const val CHANNEL_ID = "reminders"
const val EXTRA_HREF = "href"
/** Fires at an item's next reminder time: shows a notification, then re-arms the following offset. */
class ReminderReceiver : BroadcastReceiver() {
override fun onReceive(context: Context, intent: Intent) {
val href = intent.getStringExtra(EXTRA_HREF) ?: return
val app = context.applicationContext as NcalApplication
val pendingResult = goAsync()
CoroutineScope(Dispatchers.IO).launch {
try {
val item = app.repository.itemByHref(href)
if (item != null) {
showNotification(context, item)
ReminderScheduler.reschedule(context, item)
}
} finally {
pendingResult.finish()
}
}
}
}
private fun showNotification(context: Context, item: CalendarItem) {
if (item.type == ItemType.TASK && item.completed) return
if (ActivityCompat.checkSelfPermission(context, Manifest.permission.POST_NOTIFICATIONS)
!= PackageManager.PERMISSION_GRANTED
) {
return
}
val anchor = if (item.type == ItemType.EVENT) item.start else item.due
val contentText = anchor?.let {
val label = if (item.type == ItemType.EVENT) "Starts" else "Due"
"$label ${SimpleDateFormat("MMM d, h:mm a", Locale.getDefault()).format(Date(it))}"
} ?: ""
val contentIntent = Intent(context, MainActivity::class.java).apply {
flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TOP
putExtra(MainActivity.EXTRA_ITEM_TYPE, item.type.name)
putExtra(MainActivity.EXTRA_ITEM_HREF, item.href)
}
val pendingIntent = PendingIntent.getActivity(
context,
item.href.hashCode(),
contentIntent,
PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
)
val notification = NotificationCompat.Builder(context, CHANNEL_ID)
.setSmallIcon(R.drawable.ic_launcher_foreground)
.setContentTitle(item.summary)
.setContentText(contentText)
.setPriority(NotificationCompat.PRIORITY_HIGH)
.setCategory(NotificationCompat.CATEGORY_REMINDER)
.setAutoCancel(true)
.setContentIntent(pendingIntent)
.build()
NotificationManagerCompat.from(context).notify(item.href.hashCode(), notification)
}

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ncal/app/src/main/java/com/homelab/ncal/notifications/ReminderScheduler.kt Normal file
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package com.homelab.ncal.notifications
import android.app.AlarmManager
import android.app.PendingIntent
import android.content.Context
import android.content.Intent
import android.os.Build
import com.homelab.ncal.data.model.CalendarItem
import com.homelab.ncal.data.model.ItemType
/**
* Schedules a single exact alarm per item, always set for the item's *next* upcoming reminder
* offset. [ReminderReceiver] re-arms the following offset (if any) each time it fires, so there's
* never more than one pending alarm per item to track or cancel.
*/
object ReminderScheduler {
fun cancel(context: Context, item: CalendarItem) {
if (item.href.isEmpty()) return
val pendingIntent = pendingIntentFor(context, item.href, create = false) ?: return
alarmManager(context).cancel(pendingIntent)
pendingIntent.cancel()
}
fun reschedule(context: Context, item: CalendarItem) {
cancel(context, item)
if (item.href.isEmpty()) return
if (item.type == ItemType.TASK && item.completed) return
val anchor = if (item.type == ItemType.EVENT) item.start else item.due
if (anchor == null || item.reminderMinutes.isEmpty()) return
val now = System.currentTimeMillis()
val nextTrigger = item.reminderMinutes
.map { anchor - it * 60_000L }
.filter { it > now }
.minOrNull() ?: return
val pendingIntent = pendingIntentFor(context, item.href, create = true) ?: return
val manager = alarmManager(context)
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S && !manager.canScheduleExactAlarms()) {
manager.setAndAllowWhileIdle(AlarmManager.RTC_WAKEUP, nextTrigger, pendingIntent)
} else {
manager.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP, nextTrigger, pendingIntent)
}
}
fun rescheduleAll(context: Context, items: List<CalendarItem>) {
items.forEach { reschedule(context, it) }
}
private fun alarmManager(context: Context) =
context.getSystemService(Context.ALARM_SERVICE) as AlarmManager
private fun pendingIntentFor(context: Context, href: String, create: Boolean): PendingIntent? {
val intent = Intent(context, ReminderReceiver::class.java).apply {
putExtra(EXTRA_HREF, href)
}
val flags = (if (create) PendingIntent.FLAG_UPDATE_CURRENT else PendingIntent.FLAG_NO_CREATE) or
PendingIntent.FLAG_IMMUTABLE
return PendingIntent.getBroadcast(context, href.hashCode(), intent, flags)
}
}

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ncal/app/src/main/java/com/homelab/ncal/ui/ViewModelFactory.kt Normal file
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package com.homelab.ncal.ui
import androidx.lifecycle.SavedStateHandle
import androidx.lifecycle.ViewModel
import androidx.lifecycle.ViewModelProvider
import androidx.lifecycle.createSavedStateHandle
import androidx.lifecycle.viewmodel.CreationExtras
import com.homelab.ncal.NcalApplication
import com.homelab.ncal.data.repository.NextcloudRepository
/**
* Small hand-rolled factory so ViewModels can take a [NextcloudRepository] (and, where
* needed, the navigation [SavedStateHandle]) without pulling in a DI framework.
*/
class NcalViewModelFactory(
private val app: NcalApplication,
private val create: (NextcloudRepository, SavedStateHandle) -> ViewModel
) : ViewModelProvider.Factory {
override fun <T : ViewModel> create(modelClass: Class<T>, extras: CreationExtras): T {
val handle = extras.createSavedStateHandle()
@Suppress("UNCHECKED_CAST")
return create(app.repository, handle) as T
}
}

169
ncal/app/src/main/java/com/homelab/ncal/ui/agenda/AgendaScreen.kt Normal file
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package com.homelab.ncal.ui.agenda
import androidx.compose.foundation.clickable
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.PaddingValues
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.lazy.items
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Add
import androidx.compose.material.icons.filled.CalendarMonth
import androidx.compose.material.icons.filled.CheckCircle
import androidx.compose.material.icons.filled.Event
import androidx.compose.material.icons.filled.List
import androidx.compose.material.icons.filled.RadioButtonUnchecked
import androidx.compose.material.icons.filled.Refresh
import androidx.compose.material.icons.filled.Settings
import androidx.compose.material3.CenterAlignedTopAppBar
import androidx.compose.material3.CircularProgressIndicator
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.FloatingActionButton
import androidx.compose.material3.HorizontalDivider
import androidx.compose.material3.Icon
import androidx.compose.material3.IconButton
import androidx.compose.material3.ListItem
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.pulltorefresh.PullToRefreshBox
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.collectAsState
import androidx.compose.runtime.getValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.text.style.TextDecoration
import androidx.compose.ui.text.style.TextOverflow
import androidx.compose.ui.unit.dp
import com.homelab.ncal.data.model.CalendarItem
import com.homelab.ncal.data.model.ItemType
import java.time.format.DateTimeFormatter
import java.time.format.TextStyle
import java.util.Locale
@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun AgendaScreen(
viewModel: AgendaViewModel,
onOpenItem: (CalendarItem) -> Unit,
onNewEvent: () -> Unit,
onOpenTasks: () -> Unit,
onOpenCollections: () -> Unit,
onOpenMonth: () -> Unit
) {
val state by viewModel.state.collectAsState()
LaunchedEffect(Unit) {
viewModel.refresh()
}
Scaffold(
topBar = {
CenterAlignedTopAppBar(
title = { Text("Agenda") },
actions = {
IconButton(onClick = onOpenMonth) { Icon(Icons.Filled.CalendarMonth, "Month view") }
IconButton(onClick = onOpenTasks) { Icon(Icons.Filled.List, "Tasks") }
IconButton(onClick = onOpenCollections) { Icon(Icons.Filled.Settings, "Calendars") }
}
)
},
floatingActionButton = {
FloatingActionButton(onClick = onNewEvent) { Icon(Icons.Filled.Add, "New event") }
}
) { padding ->
Column(Modifier.padding(padding).fillMaxSize()) {
state.error?.let {
Text(
it,
color = MaterialTheme.colorScheme.error,
maxLines = 3,
overflow = TextOverflow.Ellipsis,
modifier = Modifier.padding(16.dp)
)
}
PullToRefreshBox(
isRefreshing = state.refreshing,
onRefresh = viewModel::refresh,
modifier = Modifier.weight(1f)
) {
if (state.itemsByDay.isEmpty() && !state.refreshing) {
Box(Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
Text("Nothing here yet. Pull to refresh, or check enabled calendars.")
}
}
LazyColumn(contentPadding = PaddingValues(bottom = 88.dp)) {
state.itemsByDay.forEach { (day, dayItems) ->
item(key = "header-$day") {
Text(
text = day.format(DateTimeFormatter.ofPattern("EEEE, MMM d")),
style = MaterialTheme.typography.titleSmall,
color = MaterialTheme.colorScheme.primary,
modifier = Modifier.padding(horizontal = 16.dp, vertical = 8.dp)
)
}
items(dayItems, key = { "$day-${it.href.ifEmpty { it.uid }}" }) { agendaItem ->
AgendaRow(
item = agendaItem,
onClick = { onOpenItem(agendaItem) },
onToggleComplete = { viewModel.toggleTask(agendaItem) }
)
HorizontalDivider()
}
}
}
}
}
}
}
@Composable
private fun AgendaRow(
item: CalendarItem,
onClick: () -> Unit,
onToggleComplete: () -> Unit
) {
ListItem(
modifier = Modifier.clickableCompat(onClick),
headlineContent = {
Text(
item.summary,
textDecoration = if (item.completed) TextDecoration.LineThrough else null
)
},
supportingContent = {
val time = item.start?.let { formatTime(it, item.allDay) }
?: item.due?.let { "Due " + formatTime(it, false) }
time?.let { Text(it) }
},
leadingContent = {
if (item.type == ItemType.TASK) {
Icon(
imageVector = if (item.completed) Icons.Filled.CheckCircle else Icons.Filled.RadioButtonUnchecked,
contentDescription = "Toggle complete",
tint = MaterialTheme.colorScheme.primary,
modifier = Modifier.clickableCompat(onToggleComplete)
)
} else {
Icon(Icons.Filled.Event, contentDescription = null)
}
}
)
}
private fun formatTime(millis: Long, allDay: Boolean): String {
val zone = java.time.ZoneId.systemDefault()
val instant = java.time.Instant.ofEpochMilli(millis)
return if (allDay) {
"All day"
} else {
instant.atZone(zone).format(DateTimeFormatter.ofPattern("h:mm a"))
}
}
// Small helper so leading icons and rows are tappable without pulling in indication ripple boilerplate everywhere.
private fun Modifier.clickableCompat(onClick: () -> Unit): Modifier =
this.then(Modifier.clickable(onClick = onClick))

73
ncal/app/src/main/java/com/homelab/ncal/ui/agenda/AgendaViewModel.kt Normal file
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package com.homelab.ncal.ui.agenda
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import com.homelab.ncal.data.model.CalendarItem
import com.homelab.ncal.data.repository.NextcloudRepository
import com.homelab.ncal.util.groupByAllOccupiedDays
import com.homelab.ncal.util.toUserMessage
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.SharingStarted
import kotlinx.coroutines.flow.StateFlow
import kotlinx.coroutines.flow.combine
import kotlinx.coroutines.flow.flatMapLatest
import kotlinx.coroutines.flow.stateIn
import kotlinx.coroutines.launch
import java.time.LocalDate
import java.time.ZoneId
data class AgendaUiState(
val itemsByDay: List<Pair<LocalDate, List<CalendarItem>>> = emptyList(),
val refreshing: Boolean = false,
val error: String? = null
)
class AgendaViewModel(private val repo: NextcloudRepository) : ViewModel() {
private val refreshing = MutableStateFlow(false)
private val error = MutableStateFlow<String?>(null)
private val items = repo.observeCollections()
.flatMapLatest { collections ->
val urls = collections.filter { it.enabled }.map { it.url }
repo.observeItems(urls)
}
val state: StateFlow<AgendaUiState> = combine(items, refreshing, error) { itemList, r, e ->
AgendaUiState(groupByDay(itemList), r, e)
}.stateIn(viewModelScope, SharingStarted.WhileSubscribed(5000), AgendaUiState())
private fun groupByDay(items: List<CalendarItem>): List<Pair<LocalDate, List<CalendarItem>>> {
val zone = ZoneId.systemDefault()
return items.groupByAllOccupiedDays(zone)
.toSortedMap()
.map { (day, list) -> day to list.sortedBy { it.start ?: it.due } }
}
fun refresh() {
refreshing.value = true
viewModelScope.launch {
try {
repo.fullSync()
error.value = null
} catch (e: Exception) {
android.util.Log.e("NCalError", "Agenda fullSync failed", e)
error.value = e.toUserMessage()
} finally {
refreshing.value = false
}
}
}
fun toggleTask(item: CalendarItem) {
viewModelScope.launch {
try {
repo.toggleTaskComplete(item)
error.value = null
} catch (e: Exception) {
android.util.Log.e("NCalError", "toggleTask failed for href=${item.href} calendar=${item.calendarUrl}", e)
error.value = e.toUserMessage()
}
}
}
}

89
ncal/app/src/main/java/com/homelab/ncal/ui/collections/CollectionsScreen.kt Normal file
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package com.homelab.ncal.ui.collections
import androidx.compose.foundation.Canvas
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.lazy.items
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.ArrowBack
import androidx.compose.material.icons.filled.Refresh
import androidx.compose.material3.CenterAlignedTopAppBar
import androidx.compose.material3.Checkbox
import androidx.compose.material3.CircularProgressIndicator
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.Icon
import androidx.compose.material3.IconButton
import androidx.compose.material3.ListItem
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.collectAsState
import androidx.compose.runtime.getValue
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.unit.dp
@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun CollectionsScreen(
viewModel: CollectionsViewModel,
onBack: () -> Unit
) {
val state by viewModel.state.collectAsState()
Scaffold(
topBar = {
CenterAlignedTopAppBar(
title = { Text("Calendars & task lists") },
navigationIcon = {
IconButton(onClick = onBack) { Icon(Icons.Filled.ArrowBack, null) }
},
actions = {
IconButton(onClick = viewModel::refresh) { Icon(Icons.Filled.Refresh, "Refresh") }
}
)
}
) { padding ->
Column(Modifier.fillMaxSize().padding(padding)) {
if (state.refreshing) {
CircularProgressIndicator(Modifier.padding(16.dp))
}
state.error?.let {
Text(it, color = MaterialTheme.colorScheme.error, modifier = Modifier.padding(16.dp))
}
LazyColumn {
items(state.collections, key = { it.url }) { col ->
ListItem(
headlineContent = { Text(col.displayName) },
supportingContent = { Text(componentLabel(col.supportsEvents, col.supportsTasks)) },
leadingContent = {
val color = runCatching { Color(android.graphics.Color.parseColor(col.colorHex ?: "#1F6FEB")) }
.getOrDefault(MaterialTheme.colorScheme.primary)
Canvas(Modifier.size(16.dp)) {
drawCircle(color = color)
}
},
trailingContent = {
Checkbox(
checked = col.enabled,
onCheckedChange = { viewModel.setEnabled(col.url, it) }
)
}
)
}
}
}
}
}
private fun componentLabel(events: Boolean, tasks: Boolean): String = when {
events && tasks -> "Events + Tasks"
events -> "Events"
tasks -> "Tasks"
else -> "Unknown"
}

62
ncal/app/src/main/java/com/homelab/ncal/ui/collections/CollectionsViewModel.kt Normal file
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package com.homelab.ncal.ui.collections
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import com.homelab.ncal.data.model.CalendarCollection
import com.homelab.ncal.data.repository.NextcloudRepository
import com.homelab.ncal.util.toUserMessage
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.StateFlow
import kotlinx.coroutines.flow.combine
import kotlinx.coroutines.flow.stateIn
import kotlinx.coroutines.launch
data class CollectionsUiState(
val collections: List<CalendarCollection> = emptyList(),
val refreshing: Boolean = false,
val error: String? = null
)
class CollectionsViewModel(private val repo: NextcloudRepository) : ViewModel() {
private val refreshing = MutableStateFlow(false)
private val error = MutableStateFlow<String?>(null)
val state: StateFlow<CollectionsUiState> = combine(
repo.observeCollections(), refreshing, error
) { collections, isRefreshing, err ->
CollectionsUiState(collections, isRefreshing, err)
}.stateIn(viewModelScope, kotlinx.coroutines.flow.SharingStarted.WhileSubscribed(5000), CollectionsUiState())
fun refresh() {
refreshing.value = true
viewModelScope.launch {
try {
repo.fullSync()
error.value = null
} catch (e: Exception) {
android.util.Log.e("NCalError", "Collections fullSync failed", e)
error.value = e.toUserMessage()
} finally {
refreshing.value = false
}
}
}
fun setEnabled(url: String, enabled: Boolean) {
viewModelScope.launch {
repo.setCollectionEnabled(url, enabled)
if (enabled) {
// Newly-enabled collections (or ones re-enabled after being off) have never
// had their items fetched - without this they'd sit empty until the user
// happens to pull-to-refresh on Agenda/Tasks.
try {
repo.syncItems()
} catch (e: Exception) {
android.util.Log.e("NCalError", "syncItems after enabling $url failed", e)
error.value = e.toUserMessage()
}
}
}
}
}

538
ncal/app/src/main/java/com/homelab/ncal/ui/detail/ItemEditScreen.kt Normal file
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package com.homelab.ncal.ui.detail
import androidx.compose.foundation.background
import androidx.compose.foundation.clickable
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.rememberScrollState
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.foundation.verticalScroll
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.ArrowBack
import androidx.compose.material.icons.filled.Delete
import androidx.compose.foundation.layout.Box
import androidx.compose.material3.AlertDialog
import androidx.compose.material3.CenterAlignedTopAppBar
import androidx.compose.material3.Checkbox
import androidx.compose.material3.CircularProgressIndicator
import androidx.compose.material3.DropdownMenu
import androidx.compose.material3.DropdownMenuItem
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.ExposedDropdownMenuBox
import androidx.compose.material3.ExposedDropdownMenuDefaults
import androidx.compose.material3.Icon
import androidx.compose.material3.IconButton
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.MenuAnchorType
import androidx.compose.material3.OutlinedTextField
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Slider
import androidx.compose.material3.Text
import androidx.compose.material3.TextButton
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.collectAsState
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.unit.dp
import com.homelab.ncal.data.model.ItemType
import com.homelab.ncal.data.model.TaskStatus
import com.homelab.ncal.util.priorityColor
import com.homelab.ncal.util.priorityLabel
import java.text.SimpleDateFormat
import java.util.Calendar
import java.util.Date
import java.util.Locale
@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun ItemEditScreen(
viewModel: ItemEditViewModel,
onDone: () -> Unit
) {
val state by viewModel.state.collectAsState()
var showDeleteConfirm by remember { mutableStateOf(false) }
LaunchedEffect(state.done, state.deleted) {
if (state.done || state.deleted) onDone()
}
val item = state.item
Scaffold(
topBar = {
CenterAlignedTopAppBar(
title = { Text(if (item?.isNew == false) "Edit" else if (item?.type == ItemType.TASK) "New task" else "New event") },
navigationIcon = {
IconButton(onClick = onDone) { Icon(Icons.Filled.ArrowBack, null) }
},
actions = {
if (item != null && !item.isNew) {
IconButton(onClick = { showDeleteConfirm = true }) {
Icon(Icons.Filled.Delete, "Delete")
}
}
}
)
}
) { padding ->
if (state.loading || item == null) {
Box(Modifier.fillMaxSize().padding(padding), contentAlignment = Alignment.Center) {
CircularProgressIndicator()
}
return@Scaffold
}
Column(
Modifier
.fillMaxSize()
.padding(padding)
.padding(16.dp)
.verticalScroll(rememberScrollState())
) {
OutlinedTextField(
value = item.summary,
onValueChange = { v -> viewModel.update { it.copy(summary = v) } },
label = { Text("Title") },
singleLine = true,
modifier = Modifier.fillMaxWidth().padding(bottom = 12.dp)
)
OutlinedTextField(
value = item.description,
onValueChange = { v -> viewModel.update { it.copy(description = v) } },
label = { Text("Description") },
minLines = 3,
modifier = Modifier.fillMaxWidth().padding(bottom = 12.dp)
)
OutlinedTextField(
value = item.location,
onValueChange = { v -> viewModel.update { it.copy(location = v) } },
label = { Text("Location") },
singleLine = true,
modifier = Modifier.fillMaxWidth().padding(bottom = 12.dp)
)
OutlinedTextField(
value = item.url,
onValueChange = { v -> viewModel.update { it.copy(url = v) } },
label = { Text("URL") },
singleLine = true,
modifier = Modifier.fillMaxWidth().padding(bottom = 12.dp)
)
Text("Priority", style = MaterialTheme.typography.labelLarge, modifier = Modifier.padding(bottom = 4.dp))
PriorityPicker(
selected = item.priority,
onSelect = { p -> viewModel.update { it.copy(priority = p) } }
)
if (item.type == ItemType.EVENT) {
Text("Starts", style = MaterialTheme.typography.labelLarge, modifier = Modifier.padding(top = 16.dp))
DateTimePicker(
millis = item.start,
onChange = { v -> viewModel.update { it.copy(start = v) } }
)
Text("Ends", style = MaterialTheme.typography.labelLarge, modifier = Modifier.padding(top = 8.dp))
DateTimePicker(
millis = item.end,
onChange = { v -> viewModel.update { it.copy(end = v) } }
)
Row(
verticalAlignment = Alignment.CenterVertically,
modifier = Modifier.padding(top = 8.dp)
) {
Checkbox(
checked = item.allDay,
onCheckedChange = { v -> viewModel.update { it.copy(allDay = v) } }
)
Text("All day")
}
} else {
Text("Starts", style = MaterialTheme.typography.labelLarge, modifier = Modifier.padding(top = 16.dp))
DateTimePicker(
millis = item.start,
onChange = { v -> viewModel.update { it.copy(start = v) } }
)
Text("Due", style = MaterialTheme.typography.labelLarge, modifier = Modifier.padding(top = 8.dp))
DateTimePicker(
millis = item.due,
onChange = { v -> viewModel.update { it.copy(due = v) } }
)
Text(
"Status",
style = MaterialTheme.typography.labelLarge,
modifier = Modifier.padding(top = 16.dp, bottom = 4.dp)
)
StatusPicker(
selected = item.status,
onSelect = { s -> viewModel.update { it.withStatus(s) } }
)
Text(
"% complete: ${item.percentComplete}",
style = MaterialTheme.typography.labelLarge,
modifier = Modifier.padding(top = 16.dp)
)
Slider(
value = item.percentComplete.toFloat(),
onValueChange = { v ->
val pct = v.toInt()
viewModel.update {
if (pct >= 100) {
it.withStatus(TaskStatus.COMPLETED)
} else {
it.copy(
percentComplete = pct,
status = if (it.status == TaskStatus.COMPLETED) TaskStatus.IN_PROCESS else it.status,
completed = false
)
}
}
},
valueRange = 0f..100f,
steps = 19
)
Text(
"Parent task",
style = MaterialTheme.typography.labelLarge,
modifier = Modifier.padding(top = 16.dp, bottom = 4.dp)
)
ParentTaskPicker(
selectedUid = item.parentUid,
options = state.availableParentTasks,
onSelect = { uid -> viewModel.update { it.copy(parentUid = uid) } }
)
}
Text(
"Reminders",
style = MaterialTheme.typography.labelLarge,
modifier = Modifier.padding(top = 16.dp, bottom = 4.dp)
)
item.reminderMinutes.sorted().forEach { minutes ->
Row(
verticalAlignment = Alignment.CenterVertically,
horizontalArrangement = Arrangement.SpaceBetween,
modifier = Modifier.fillMaxWidth()
) {
Text(reminderLabel(minutes))
IconButton(onClick = {
viewModel.update { it.copy(reminderMinutes = it.reminderMinutes - minutes) }
}) {
Icon(Icons.Filled.Delete, contentDescription = "Remove reminder")
}
}
}
AddReminderButton(
existing = item.reminderMinutes,
onAdd = { minutes -> viewModel.update { it.copy(reminderMinutes = (it.reminderMinutes + minutes).distinct()) } }
)
Text(
"Calendar",
style = MaterialTheme.typography.labelLarge,
modifier = Modifier.padding(top = 16.dp, bottom = 4.dp)
)
CalendarPicker(
selectedUrl = item.calendarUrl,
options = state.availableCalendars,
onSelect = { url -> viewModel.update { it.copy(calendarUrl = url) } }
)
state.error?.let {
Text(it, color = MaterialTheme.colorScheme.error, modifier = Modifier.padding(top = 16.dp))
}
androidx.compose.material3.Button(
onClick = viewModel::save,
enabled = !state.saving,
modifier = Modifier.fillMaxWidth().padding(top = 24.dp)
) {
if (state.saving) {
CircularProgressIndicator(modifier = Modifier.padding(4.dp))
} else {
Text("Save")
}
}
}
if (showDeleteConfirm) {
AlertDialog(
onDismissRequest = { showDeleteConfirm = false },
title = { Text("Delete this ${if (item.type == ItemType.TASK) "task" else "event"}?") },
text = { Text("This can't be undone.") },
confirmButton = {
TextButton(onClick = {
showDeleteConfirm = false
viewModel.delete()
}) { Text("Delete") }
},
dismissButton = {
TextButton(onClick = { showDeleteConfirm = false }) { Text("Cancel") }
}
)
}
}
}
@OptIn(ExperimentalMaterial3Api::class)
@Composable
private fun CalendarPicker(
selectedUrl: String,
options: List<com.homelab.ncal.data.model.CalendarCollection>,
onSelect: (String) -> Unit
) {
var expanded by remember { mutableStateOf(false) }
val selectedName = options.firstOrNull { it.url == selectedUrl }?.displayName ?: "Select calendar"
ExposedDropdownMenuBox(
expanded = expanded,
onExpandedChange = { expanded = it },
modifier = Modifier.fillMaxWidth()
) {
OutlinedTextField(
value = selectedName,
onValueChange = {},
readOnly = true,
trailingIcon = { ExposedDropdownMenuDefaults.TrailingIcon(expanded = expanded) },
modifier = Modifier
.fillMaxWidth()
.menuAnchor(MenuAnchorType.PrimaryNotEditable)
)
ExposedDropdownMenu(
expanded = expanded,
onDismissRequest = { expanded = false }
) {
options.forEach { col ->
DropdownMenuItem(
text = { Text(col.displayName) },
onClick = {
onSelect(col.url)
expanded = false
}
)
}
}
}
}
@Composable
private fun PriorityDot(color: Color?, modifier: Modifier = Modifier) {
Box(
modifier = modifier
.size(12.dp)
.clip(CircleShape)
.background(color ?: MaterialTheme.colorScheme.outlineVariant)
)
}
@OptIn(ExperimentalMaterial3Api::class)
@Composable
private fun PriorityPicker(selected: Int, onSelect: (Int) -> Unit) {
var expanded by remember { mutableStateOf(false) }
ExposedDropdownMenuBox(
expanded = expanded,
onExpandedChange = { expanded = it },
modifier = Modifier.fillMaxWidth()
) {
OutlinedTextField(
value = priorityLabel(selected),
onValueChange = {},
readOnly = true,
leadingIcon = { PriorityDot(priorityColor(selected)) },
trailingIcon = { ExposedDropdownMenuDefaults.TrailingIcon(expanded = expanded) },
modifier = Modifier
.fillMaxWidth()
.menuAnchor(MenuAnchorType.PrimaryNotEditable)
)
ExposedDropdownMenu(
expanded = expanded,
onDismissRequest = { expanded = false }
) {
(0..9).forEach { p ->
DropdownMenuItem(
leadingIcon = { PriorityDot(priorityColor(p)) },
text = { Text(priorityLabel(p)) },
onClick = {
onSelect(p)
expanded = false
}
)
}
}
}
}
private fun statusLabel(status: TaskStatus): String = when (status) {
TaskStatus.NEEDS_ACTION -> "Not started"
TaskStatus.IN_PROCESS -> "In progress"
TaskStatus.COMPLETED -> "Completed"
TaskStatus.CANCELLED -> "Cancelled"
}
@OptIn(ExperimentalMaterial3Api::class)
@Composable
private fun StatusPicker(selected: TaskStatus, onSelect: (TaskStatus) -> Unit) {
var expanded by remember { mutableStateOf(false) }
ExposedDropdownMenuBox(
expanded = expanded,
onExpandedChange = { expanded = it },
modifier = Modifier.fillMaxWidth()
) {
OutlinedTextField(
value = statusLabel(selected),
onValueChange = {},
readOnly = true,
trailingIcon = { ExposedDropdownMenuDefaults.TrailingIcon(expanded = expanded) },
modifier = Modifier
.fillMaxWidth()
.menuAnchor(MenuAnchorType.PrimaryNotEditable)
)
ExposedDropdownMenu(
expanded = expanded,
onDismissRequest = { expanded = false }
) {
TaskStatus.entries.forEach { s ->
DropdownMenuItem(
text = { Text(statusLabel(s)) },
onClick = {
onSelect(s)
expanded = false
}
)
}
}
}
}
@OptIn(ExperimentalMaterial3Api::class)
@Composable
private fun ParentTaskPicker(
selectedUid: String?,
options: List<com.homelab.ncal.data.model.CalendarItem>,
onSelect: (String?) -> Unit
) {
var expanded by remember { mutableStateOf(false) }
val selectedName = options.firstOrNull { it.uid == selectedUid }?.summary ?: "None"
ExposedDropdownMenuBox(
expanded = expanded,
onExpandedChange = { expanded = it },
modifier = Modifier.fillMaxWidth()
) {
OutlinedTextField(
value = selectedName,
onValueChange = {},
readOnly = true,
trailingIcon = { ExposedDropdownMenuDefaults.TrailingIcon(expanded = expanded) },
modifier = Modifier
.fillMaxWidth()
.menuAnchor(MenuAnchorType.PrimaryNotEditable)
)
ExposedDropdownMenu(
expanded = expanded,
onDismissRequest = { expanded = false }
) {
DropdownMenuItem(
text = { Text("None") },
onClick = {
onSelect(null)
expanded = false
}
)
options.forEach { task ->
DropdownMenuItem(
text = { Text(task.summary) },
onClick = {
onSelect(task.uid)
expanded = false
}
)
}
}
}
}
private val reminderPresets = listOf(0, 5, 15, 30, 60, 120, 1440, 2880, 10080)
private fun reminderLabel(minutes: Int): String = when {
minutes <= 0 -> "At time of event"
minutes % 10080 == 0 -> "${minutes / 10080} week${if (minutes / 10080 > 1) "s" else ""} before"
minutes % 1440 == 0 -> "${minutes / 1440} day${if (minutes / 1440 > 1) "s" else ""} before"
minutes % 60 == 0 -> "${minutes / 60} hour${if (minutes / 60 > 1) "s" else ""} before"
else -> "$minutes minutes before"
}
@Composable
private fun AddReminderButton(existing: List<Int>, onAdd: (Int) -> Unit) {
var expanded by remember { mutableStateOf(false) }
val available = reminderPresets.filter { it !in existing }
Box {
TextButton(onClick = { expanded = true }, enabled = available.isNotEmpty()) {
Text("+ Add reminder")
}
DropdownMenu(expanded = expanded, onDismissRequest = { expanded = false }) {
available.forEach { minutes ->
DropdownMenuItem(
text = { Text(reminderLabel(minutes)) },
onClick = {
onAdd(minutes)
expanded = false
}
)
}
}
}
}
/** Simple date + time picker built on the platform DatePickerDialog/TimePickerDialog. */
@Composable
private fun DateTimePicker(millis: Long?, onChange: (Long?) -> Unit) {
val context = androidx.compose.ui.platform.LocalContext.current
val display = millis?.let { SimpleDateFormat("EEE, MMM d yyyy h:mm a", Locale.getDefault()).format(Date(it)) } ?: "Not set"
Row(verticalAlignment = Alignment.CenterVertically, horizontalArrangement = Arrangement.SpaceBetween, modifier = Modifier.fillMaxWidth()) {
Text(display, modifier = Modifier.padding(vertical = 8.dp))
Row(verticalAlignment = Alignment.CenterVertically) {
if (millis != null) {
TextButton(onClick = { onChange(null) }) {
Text("Clear")
}
}
TextButton(onClick = {
val cal = Calendar.getInstance()
millis?.let { cal.timeInMillis = it }
android.app.DatePickerDialog(context, { _, y, m, d ->
cal.set(y, m, d)
android.app.TimePickerDialog(context, { _, h, min ->
cal.set(Calendar.HOUR_OF_DAY, h)
cal.set(Calendar.MINUTE, min)
cal.set(Calendar.SECOND, 0)
onChange(cal.timeInMillis)
}, cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE), false).show()
}, cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH)).show()
}) {
Text("Set")
}
}
}
}

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ncal/app/src/main/java/com/homelab/ncal/ui/detail/ItemEditViewModel.kt Normal file
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package com.homelab.ncal.ui.detail
import androidx.lifecycle.SavedStateHandle
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import com.homelab.ncal.data.model.CalendarCollection
import com.homelab.ncal.data.model.CalendarItem
import com.homelab.ncal.data.model.ItemType
import com.homelab.ncal.data.repository.NextcloudRepository
import com.homelab.ncal.util.toUserMessage
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.StateFlow
import kotlinx.coroutines.flow.first
import kotlinx.coroutines.launch
import java.net.URLDecoder
import java.util.UUID
data class ItemEditUiState(
val item: CalendarItem? = null,
val availableCalendars: List<CalendarCollection> = emptyList(),
val allTasks: List<CalendarItem> = emptyList(),
val loading: Boolean = true,
val saving: Boolean = false,
val error: String? = null,
val done: Boolean = false,
val deleted: Boolean = false
) {
/** Tasks eligible to be set as this task's parent: same calendar, not itself, not one of its own descendants. */
val availableParentTasks: List<CalendarItem> get() {
val current = item ?: return emptyList()
val descendants = mutableSetOf<String>()
var frontier = setOf(current.uid)
while (frontier.isNotEmpty()) {
val children = allTasks.filter { it.parentUid != null && it.parentUid in frontier }
.map { it.uid }.toSet() - descendants
descendants += children
frontier = children
}
return allTasks.filter {
it.calendarUrl == current.calendarUrl && it.uid != current.uid && it.uid !in descendants
}
}
}
class ItemEditViewModel(
private val repo: NextcloudRepository,
savedStateHandle: SavedStateHandle
) : ViewModel() {
private val hrefArg: String? = savedStateHandle.get<String>("href")
?.let { if (it == "new") null else URLDecoder.decode(it, "UTF-8") }
private val typeArg = savedStateHandle.get<String>("type") ?: "EVENT"
private val calendarUrlArg: String? = savedStateHandle.get<String>("calendarUrl")
?.let { URLDecoder.decode(it, "UTF-8") }.takeUnless { it.isNullOrBlank() || it == "none" }
private val _state = MutableStateFlow(ItemEditUiState())
val state: StateFlow<ItemEditUiState> = _state
init {
viewModelScope.launch {
val collections = repo.observeCollections().first()
val relevantType = ItemType.valueOf(typeArg)
val eligibleCalendars = collections.filter {
if (relevantType == ItemType.EVENT) it.supportsEvents else it.supportsTasks
}
val loaded = if (hrefArg != null) {
findItem(hrefArg, collections)
} else {
val targetCalendar = calendarUrlArg ?: eligibleCalendars.firstOrNull()?.url
CalendarItem(
uid = UUID.randomUUID().toString(),
href = "",
etag = null,
calendarUrl = targetCalendar ?: "",
type = relevantType,
summary = "",
start = if (relevantType == ItemType.EVENT) System.currentTimeMillis() else null
)
}
val allTasks = if (relevantType == ItemType.TASK) {
repo.observeTasks(collections.map { it.url }).first()
} else {
emptyList()
}
_state.value = _state.value.copy(
item = loaded,
availableCalendars = eligibleCalendars,
allTasks = allTasks,
loading = false
)
}
}
private suspend fun findItem(href: String, collections: List<CalendarCollection>): CalendarItem? {
// Items are cached locally; pull from whichever calendar's flow contains it.
val urls = collections.map { it.url }
return repo.observeItems(urls).first().firstOrNull { it.href == href }
}
fun update(transform: (CalendarItem) -> CalendarItem) {
_state.value = _state.value.copy(item = _state.value.item?.let(transform))
}
fun save() {
val item = _state.value.item ?: return
if (item.summary.isBlank()) {
_state.value = _state.value.copy(error = "Title is required")
return
}
if (item.calendarUrl.isBlank()) {
_state.value = _state.value.copy(error = "Pick a calendar first")
return
}
_state.value = _state.value.copy(saving = true, error = null)
viewModelScope.launch {
try {
repo.save(item)
_state.value = _state.value.copy(saving = false, done = true)
} catch (e: Exception) {
android.util.Log.e("NCalError", "save() failed for href=${item.href} calendar=${item.calendarUrl}", e)
_state.value = _state.value.copy(saving = false, error = e.toUserMessage())
}
}
}
fun delete() {
val item = _state.value.item ?: return
if (item.isNew) return
_state.value = _state.value.copy(saving = true, error = null)
viewModelScope.launch {
try {
repo.delete(item)
_state.value = _state.value.copy(saving = false, deleted = true)
} catch (e: Exception) {
android.util.Log.e("NCalError", "delete() failed for href=${item.href} calendar=${item.calendarUrl}", e)
_state.value = _state.value.copy(saving = false, error = e.toUserMessage())
}
}
}
}

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ncal/app/src/main/java/com/homelab/ncal/ui/login/LoginScreen.kt Normal file
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package com.homelab.ncal.ui.login
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.rememberScrollState
import androidx.compose.foundation.text.KeyboardOptions
import androidx.compose.foundation.verticalScroll
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.CalendarMonth
import androidx.compose.material3.Button
import androidx.compose.material3.CircularProgressIndicator
import androidx.compose.material3.Icon
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.OutlinedTextField
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.collectAsState
import androidx.compose.runtime.getValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.text.input.KeyboardType
import androidx.compose.ui.text.input.PasswordVisualTransformation
import androidx.compose.ui.text.style.TextAlign
import androidx.compose.ui.unit.dp
@Composable
fun LoginScreen(
viewModel: LoginViewModel,
onLoggedIn: () -> Unit
) {
val state by viewModel.state.collectAsState()
LaunchedEffect(state.success) {
if (state.success) onLoggedIn()
}
Scaffold { padding ->
Column(
modifier = Modifier
.fillMaxSize()
.padding(padding)
.padding(24.dp)
.verticalScroll(rememberScrollState()),
verticalArrangement = Arrangement.Center,
horizontalAlignment = Alignment.CenterHorizontally
) {
Icon(
imageVector = Icons.Filled.CalendarMonth,
contentDescription = null,
tint = MaterialTheme.colorScheme.primary,
modifier = Modifier.padding(bottom = 8.dp)
)
Text("Connect to Nextcloud", style = MaterialTheme.typography.headlineSmall)
Text(
"Uses CalDAV directly \u2014 no third-party sync app needed.",
style = MaterialTheme.typography.bodySmall,
textAlign = TextAlign.Center,
modifier = Modifier.padding(bottom = 24.dp, top = 4.dp)
)
OutlinedTextField(
value = state.serverUrl,
onValueChange = viewModel::onServerUrlChange,
label = { Text("Server URL") },
placeholder = { Text("nextcloud.yourdomain.com") },
keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Uri),
singleLine = true,
modifier = Modifier.fillMaxWidth().padding(bottom = 12.dp)
)
OutlinedTextField(
value = state.username,
onValueChange = viewModel::onUsernameChange,
label = { Text("Username") },
singleLine = true,
modifier = Modifier.fillMaxWidth().padding(bottom = 12.dp)
)
OutlinedTextField(
value = state.appPassword,
onValueChange = viewModel::onPasswordChange,
label = { Text("App password") },
singleLine = true,
visualTransformation = PasswordVisualTransformation(),
keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Password),
modifier = Modifier.fillMaxWidth().padding(bottom = 4.dp)
)
Text(
"Settings \u2192 Security \u2192 Devices & sessions \u2192 Create new app password. Don't use your real login password.",
style = MaterialTheme.typography.bodySmall,
textAlign = TextAlign.Center,
modifier = Modifier.padding(bottom = 20.dp)
)
state.error?.let {
Text(it, color = MaterialTheme.colorScheme.error, modifier = Modifier.padding(bottom = 12.dp))
}
Button(onClick = viewModel::submit, enabled = !state.loading, modifier = Modifier.fillMaxWidth()) {
if (state.loading) {
CircularProgressIndicator(modifier = Modifier.padding(4.dp))
} else {
Text("Connect")
}
}
}
}
}

61
ncal/app/src/main/java/com/homelab/ncal/ui/login/LoginViewModel.kt Normal file
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package com.homelab.ncal.ui.login
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import com.homelab.ncal.data.repository.NextcloudRepository
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.StateFlow
import kotlinx.coroutines.launch
data class LoginUiState(
val serverUrl: String = "",
val username: String = "",
val appPassword: String = "",
val loading: Boolean = false,
val error: String? = null,
val success: Boolean = false
)
class LoginViewModel(private val repo: NextcloudRepository) : ViewModel() {
private val _state = MutableStateFlow(LoginUiState())
val state: StateFlow<LoginUiState> = _state
fun onServerUrlChange(v: String) { _state.value = _state.value.copy(serverUrl = v, error = null) }
fun onUsernameChange(v: String) { _state.value = _state.value.copy(username = v, error = null) }
fun onPasswordChange(v: String) { _state.value = _state.value.copy(appPassword = v, error = null) }
fun submit() {
val s = _state.value
if (s.serverUrl.isBlank() || s.username.isBlank() || s.appPassword.isBlank()) {
_state.value = s.copy(error = "All fields are required")
return
}
_state.value = s.copy(loading = true, error = null)
viewModelScope.launch {
try {
// Cleartext traffic is disabled app-wide (see AndroidManifest usesCleartextTraffic),
// so always force https regardless of what scheme (if any) the user typed.
val normalized = "https://" + s.serverUrl.removePrefix("https://").removePrefix("http://")
repo.login(normalized, s.username, s.appPassword)
repo.fullSync()
_state.value = _state.value.copy(loading = false, success = true)
} catch (e: Exception) {
android.util.Log.e("NCalLogin", "Login/sync failed", e)
_state.value = _state.value.copy(
loading = false,
error = "Couldn't connect: ${describe(e)}"
)
}
}
}
/** Turns common low-level exceptions (which often have a null .message) into something readable. */
private fun describe(e: Exception): String = when (e) {
is java.net.UnknownHostException -> "Can't resolve that host \u2014 check the server URL and your network/DNS"
is java.net.ConnectException -> "Connection refused \u2014 is the server reachable from this device/emulator?"
is java.net.SocketTimeoutException -> "Connection timed out \u2014 check the URL and that the server is reachable"
is javax.net.ssl.SSLHandshakeException -> "TLS/certificate error \u2014 self-signed certs aren't trusted by default (${e.message ?: e.javaClass.simpleName})"
else -> e.message ?: "${e.javaClass.simpleName} (see Logcat tag NCalLogin for details)"
}
}

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package com.homelab.ncal.ui.month
import androidx.compose.foundation.background
import androidx.compose.foundation.clickable
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.rememberScrollState
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.foundation.verticalScroll
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Add
import androidx.compose.material.icons.filled.ArrowBack
import androidx.compose.material.icons.filled.CheckCircle
import androidx.compose.material.icons.filled.ChevronLeft
import androidx.compose.material.icons.filled.ChevronRight
import androidx.compose.material.icons.filled.Event
import androidx.compose.material.icons.filled.RadioButtonUnchecked
import androidx.compose.material.icons.filled.Today
import androidx.compose.material3.CenterAlignedTopAppBar
import androidx.compose.material3.FloatingActionButton
import androidx.compose.material3.HorizontalDivider
import androidx.compose.material3.Icon
import androidx.compose.material3.IconButton
import androidx.compose.material3.ListItem
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.pulltorefresh.PullToRefreshBox
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.collectAsState
import androidx.compose.runtime.getValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.text.style.TextDecoration
import androidx.compose.ui.text.style.TextOverflow
import androidx.compose.ui.unit.dp
import com.homelab.ncal.data.model.CalendarItem
import com.homelab.ncal.data.model.ItemType
import com.homelab.ncal.util.WeekBar
import com.homelab.ncal.util.lanesForWeek
import com.homelab.ncal.util.weeksForMonth
import java.time.LocalDate
import java.time.YearMonth
import java.time.format.DateTimeFormatter
import java.time.format.TextStyle
import java.time.temporal.WeekFields
import java.util.Locale
@OptIn(androidx.compose.material3.ExperimentalMaterial3Api::class)
@Composable
fun MonthScreen(
viewModel: MonthViewModel,
onOpenItem: (CalendarItem) -> Unit,
onNewEvent: () -> Unit,
onBack: () -> Unit
) {
val state by viewModel.state.collectAsState()
Scaffold(
topBar = {
CenterAlignedTopAppBar(
title = { Text(state.month.month.getDisplayName(TextStyle.FULL, Locale.getDefault()) + " " + state.month.year) },
navigationIcon = {
IconButton(onClick = onBack) { Icon(Icons.Filled.ArrowBack, null) }
},
actions = {
IconButton(onClick = viewModel::goToToday) { Icon(Icons.Filled.Today, "Today") }
}
)
},
floatingActionButton = {
FloatingActionButton(onClick = onNewEvent) { Icon(Icons.Filled.Add, "New event") }
}
) { padding ->
PullToRefreshBox(
isRefreshing = state.refreshing,
onRefresh = viewModel::refresh,
modifier = Modifier.padding(padding).fillMaxSize()
) {
Column(Modifier.fillMaxSize().verticalScroll(rememberScrollState())) {
state.error?.let {
Text(
it,
color = MaterialTheme.colorScheme.error,
maxLines = 3,
overflow = TextOverflow.Ellipsis,
modifier = Modifier.padding(16.dp)
)
}
MonthHeader(onPrev = viewModel::prevMonth, onNext = viewModel::nextMonth)
WeekdayLabels()
MonthGrid(
month = state.month,
selectedDay = state.selectedDay,
itemsByDay = state.itemsByDay,
onDayClick = viewModel::selectDay,
onItemClick = onOpenItem,
onToggleTask = viewModel::toggleTask
)
HorizontalDivider()
DayAgenda(
day = state.selectedDay,
items = state.itemsByDay[state.selectedDay].orEmpty(),
onOpenItem = onOpenItem,
onToggleTask = viewModel::toggleTask
)
}
}
}
}
@Composable
private fun MonthHeader(onPrev: () -> Unit, onNext: () -> Unit) {
Row(
modifier = Modifier.fillMaxWidth().padding(horizontal = 8.dp),
horizontalArrangement = Arrangement.SpaceBetween,
verticalAlignment = Alignment.CenterVertically
) {
IconButton(onClick = onPrev) { Icon(Icons.Filled.ChevronLeft, "Previous month") }
IconButton(onClick = onNext) { Icon(Icons.Filled.ChevronRight, "Next month") }
}
}
@Composable
private fun WeekdayLabels() {
val firstDow = WeekFields.of(Locale.getDefault()).firstDayOfWeek
val days = (0..6).map { firstDow.plus(it.toLong()) }
Row(Modifier.fillMaxWidth().padding(horizontal = 4.dp)) {
days.forEach { dow ->
Box(Modifier.weight(1f), contentAlignment = Alignment.Center) {
Text(
dow.getDisplayName(TextStyle.SHORT, Locale.getDefault()),
style = MaterialTheme.typography.labelSmall,
color = MaterialTheme.colorScheme.onSurfaceVariant
)
}
}
}
}
// ---------- Grid: one Column of week rows, each week a day-number strip + stacked event-bar lanes ----------
@Composable
private fun MonthGrid(
month: YearMonth,
selectedDay: LocalDate,
itemsByDay: Map<LocalDate, List<CalendarItem>>,
onDayClick: (LocalDate) -> Unit,
onItemClick: (CalendarItem) -> Unit,
onToggleTask: (CalendarItem) -> Unit
) {
val firstDow = WeekFields.of(Locale.getDefault()).firstDayOfWeek
val weeks = weeksForMonth(month, firstDow)
val today = LocalDate.now()
Column(Modifier.fillMaxWidth()) {
weeks.forEach { week ->
WeekRow(
week = week,
month = month,
itemsByDay = itemsByDay,
selectedDay = selectedDay,
today = today,
onDayClick = onDayClick,
onItemClick = onItemClick,
onToggleTask = onToggleTask
)
}
}
}
@Composable
private fun WeekRow(
week: List<LocalDate>,
month: YearMonth,
itemsByDay: Map<LocalDate, List<CalendarItem>>,
selectedDay: LocalDate,
today: LocalDate,
onDayClick: (LocalDate) -> Unit,
onItemClick: (CalendarItem) -> Unit,
onToggleTask: (CalendarItem) -> Unit
) {
val lanes = lanesForWeek(week, itemsByDay)
Column(Modifier.fillMaxWidth().padding(bottom = 4.dp)) {
Row(Modifier.fillMaxWidth()) {
week.forEach { date ->
val inMonth = YearMonth.from(date) == month
val isSelected = date == selectedDay
val isToday = date == today
Box(
Modifier.weight(1f).clickable { onDayClick(date) }.padding(vertical = 2.dp),
contentAlignment = Alignment.Center
) {
Box(
Modifier.size(24.dp).clip(CircleShape).background(
when {
isSelected -> MaterialTheme.colorScheme.primary
isToday -> MaterialTheme.colorScheme.primaryContainer
else -> Color.Transparent
}
),
contentAlignment = Alignment.Center
) {
Text(
date.dayOfMonth.toString(),
style = MaterialTheme.typography.bodySmall,
fontWeight = if (isToday || isSelected) FontWeight.Bold else FontWeight.Normal,
color = when {
isSelected -> MaterialTheme.colorScheme.onPrimary
!inMonth -> MaterialTheme.colorScheme.onSurfaceVariant.copy(alpha = 0.4f)
else -> MaterialTheme.colorScheme.onSurface
}
)
}
}
}
}
lanes.forEach { lane ->
Row(Modifier.fillMaxWidth().padding(horizontal = 2.dp, vertical = 1.dp)) {
var col = 0
while (col < 7) {
val bar = lane.firstOrNull { it.startCol == col }
if (bar != null) {
GridItemRow(
item = bar.item,
modifier = Modifier.weight(bar.span.toFloat()).padding(horizontal = 1.dp),
onClick = { onItemClick(bar.item) },
onToggleTask = { onToggleTask(bar.item) }
)
col += bar.span
} else {
Spacer(Modifier.weight(1f))
col += 1
}
}
}
}
}
}
/**
* Events render as a solid colored pill (they occupy time / span days). Tasks render as
* plain text with a small leading dot - no colored background - matching how Nextcloud/
* Google Calendar visually distinguish "things with duration" from "things to check off".
* A completed task drops the dot entirely and just shows dimmed, struck-through text.
*/
@Composable
private fun GridItemRow(
item: CalendarItem,
modifier: Modifier = Modifier,
onClick: () -> Unit,
onToggleTask: () -> Unit
) {
if (item.type == ItemType.TASK) {
Row(
modifier
.height(18.dp)
.clickable(onClick = onClick)
.padding(horizontal = 3.dp),
verticalAlignment = Alignment.CenterVertically
) {
if (!item.completed) {
Box(
Modifier
.size(5.dp)
.clip(CircleShape)
.background(MaterialTheme.colorScheme.tertiary)
.clickable(onClick = onToggleTask)
)
Spacer(Modifier.size(3.dp))
}
Text(
item.summary,
color = if (item.completed) MaterialTheme.colorScheme.onSurfaceVariant.copy(alpha = 0.6f) else MaterialTheme.colorScheme.onSurface,
style = MaterialTheme.typography.labelSmall,
maxLines = 1,
overflow = TextOverflow.Ellipsis,
textDecoration = if (item.completed) TextDecoration.LineThrough else null,
modifier = Modifier.clickable(onClick = onToggleTask)
)
}
} else {
Box(
modifier
.height(18.dp)
.clip(RoundedCornerShape(4.dp))
.background(MaterialTheme.colorScheme.primary.copy(alpha = if (item.completed) 0.45f else 1f))
.clickable(onClick = onClick)
.padding(horizontal = 4.dp),
contentAlignment = Alignment.CenterStart
) {
Text(
item.summary,
color = MaterialTheme.colorScheme.onPrimary,
style = MaterialTheme.typography.labelSmall,
maxLines = 1,
overflow = TextOverflow.Ellipsis,
textDecoration = if (item.completed) TextDecoration.LineThrough else null
)
}
}
}
// ---------- Selected-day agenda strip below the grid ----------
@Composable
private fun DayAgenda(
day: LocalDate,
items: List<CalendarItem>,
onOpenItem: (CalendarItem) -> Unit,
onToggleTask: (CalendarItem) -> Unit
) {
Column {
Text(
day.format(DateTimeFormatter.ofPattern("EEEE, MMM d")),
style = MaterialTheme.typography.titleSmall,
color = MaterialTheme.colorScheme.primary,
modifier = Modifier.padding(horizontal = 16.dp, vertical = 12.dp)
)
if (items.isEmpty()) {
Text(
"Nothing scheduled",
style = MaterialTheme.typography.bodyMedium,
color = MaterialTheme.colorScheme.onSurfaceVariant,
modifier = Modifier.padding(horizontal = 16.dp, vertical = 8.dp)
)
}
items.forEach { item ->
ListItem(
modifier = Modifier.clickable { onOpenItem(item) },
headlineContent = {
Text(item.summary, textDecoration = if (item.completed) TextDecoration.LineThrough else null)
},
supportingContent = {
val time = item.start?.let { formatTime(it, item.allDay) }
?: item.due?.let { "Due " + formatTime(it, false) }
time?.let { Text(it) }
},
leadingContent = {
if (item.type == ItemType.TASK) {
Icon(
imageVector = if (item.completed) Icons.Filled.CheckCircle else Icons.Filled.RadioButtonUnchecked,
contentDescription = "Toggle complete",
tint = MaterialTheme.colorScheme.primary,
modifier = Modifier.clickable { onToggleTask(item) }
)
} else {
Icon(Icons.Filled.Event, contentDescription = null)
}
}
)
HorizontalDivider()
}
}
}
private fun formatTime(millis: Long, allDay: Boolean): String {
val zone = java.time.ZoneId.systemDefault()
val instant = java.time.Instant.ofEpochMilli(millis)
return if (allDay) "All day" else instant.atZone(zone).format(DateTimeFormatter.ofPattern("h:mm a"))
}

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ncal/app/src/main/java/com/homelab/ncal/ui/month/MonthViewModel.kt Normal file
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package com.homelab.ncal.ui.month
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import com.homelab.ncal.data.model.CalendarItem
import com.homelab.ncal.data.repository.NextcloudRepository
import com.homelab.ncal.util.groupByAllOccupiedDays
import com.homelab.ncal.util.toUserMessage
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.SharingStarted
import kotlinx.coroutines.flow.StateFlow
import kotlinx.coroutines.flow.combine
import kotlinx.coroutines.flow.flatMapLatest
import kotlinx.coroutines.flow.stateIn
import kotlinx.coroutines.launch
import java.time.LocalDate
import java.time.YearMonth
import java.time.ZoneId
data class MonthUiState(
val month: YearMonth = YearMonth.now(),
val selectedDay: LocalDate = LocalDate.now(),
val itemsByDay: Map<LocalDate, List<CalendarItem>> = emptyMap(),
val refreshing: Boolean = false,
val error: String? = null
)
class MonthViewModel(private val repo: NextcloudRepository) : ViewModel() {
private val month = MutableStateFlow(YearMonth.now())
private val selectedDay = MutableStateFlow(LocalDate.now())
private val refreshing = MutableStateFlow(false)
private val error = MutableStateFlow<String?>(null)
private val zone = ZoneId.systemDefault()
private val allItems = repo.observeCollections()
.flatMapLatest { collections ->
val urls = collections.filter { it.enabled }.map { it.url }
repo.observeItems(urls)
}
val state: StateFlow<MonthUiState> = combine(allItems, month, selectedDay, refreshing, error) { items, m, day, r, e ->
MonthUiState(month = m, selectedDay = day, itemsByDay = items.groupByAllOccupiedDays(zone), refreshing = r, error = e)
}.stateIn(viewModelScope, SharingStarted.WhileSubscribed(5000), MonthUiState())
fun nextMonth() { month.value = month.value.plusMonths(1) }
fun prevMonth() { month.value = month.value.minusMonths(1) }
fun goToToday() {
month.value = YearMonth.now()
selectedDay.value = LocalDate.now()
}
fun selectDay(day: LocalDate) {
selectedDay.value = day
if (YearMonth.from(day) != month.value) month.value = YearMonth.from(day)
}
fun toggleTask(item: CalendarItem) {
viewModelScope.launch {
try {
repo.toggleTaskComplete(item)
error.value = null
} catch (e: Exception) {
android.util.Log.e("NCalError", "toggleTask failed for href=${item.href} calendar=${item.calendarUrl}", e)
error.value = e.toUserMessage()
}
}
}
fun refresh() {
refreshing.value = true
viewModelScope.launch {
try {
repo.fullSync()
error.value = null
} catch (e: Exception) {
android.util.Log.e("NCalError", "Month fullSync failed", e)
error.value = e.toUserMessage()
}
refreshing.value = false
}
}
}

124
ncal/app/src/main/java/com/homelab/ncal/ui/nav/NcalNavGraph.kt Normal file
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package com.homelab.ncal.ui.nav
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.lifecycle.viewmodel.compose.viewModel
import androidx.navigation.NavType
import androidx.navigation.compose.NavHost
import androidx.navigation.compose.composable
import androidx.navigation.compose.rememberNavController
import androidx.navigation.navArgument
import com.homelab.ncal.NcalApplication
import com.homelab.ncal.data.model.CalendarItem
import com.homelab.ncal.ui.NcalViewModelFactory
import com.homelab.ncal.ui.agenda.AgendaScreen
import com.homelab.ncal.ui.agenda.AgendaViewModel
import com.homelab.ncal.ui.collections.CollectionsScreen
import com.homelab.ncal.ui.collections.CollectionsViewModel
import com.homelab.ncal.ui.detail.ItemEditScreen
import com.homelab.ncal.ui.detail.ItemEditViewModel
import com.homelab.ncal.ui.login.LoginScreen
import com.homelab.ncal.ui.login.LoginViewModel
import com.homelab.ncal.ui.month.MonthScreen
import com.homelab.ncal.ui.month.MonthViewModel
import com.homelab.ncal.ui.tasks.TasksScreen
import com.homelab.ncal.ui.tasks.TasksViewModel
import java.net.URLEncoder
private object Routes {
const val LOGIN = "login"
const val AGENDA = "agenda"
const val TASKS = "tasks"
const val MONTH = "month"
const val COLLECTIONS = "collections"
const val EDIT = "edit/{type}/{href}/{calendarUrl}"
}
private fun editRoute(type: String, href: String?, calendarUrl: String? = null): String {
val encodedHref = URLEncoder.encode(href ?: "new", "UTF-8")
val encodedCalUrl = URLEncoder.encode(calendarUrl ?: "none", "UTF-8")
return "edit/$type/$encodedHref/$encodedCalUrl"
}
@Composable
fun NcalNavGraph(
app: NcalApplication,
pendingDeepLink: Pair<String, String>? = null,
onDeepLinkConsumed: () -> Unit = {}
) {
val navController = rememberNavController()
val startDestination = if (app.repository.isLoggedIn) Routes.AGENDA else Routes.LOGIN
LaunchedEffect(pendingDeepLink) {
pendingDeepLink?.let { (type, href) ->
navController.navigate(editRoute(type, href))
onDeepLinkConsumed()
}
}
NavHost(navController = navController, startDestination = startDestination) {
composable(Routes.LOGIN) {
val vm: LoginViewModel = viewModel(factory = NcalViewModelFactory(app) { repo, _ -> LoginViewModel(repo) })
LoginScreen(
viewModel = vm,
onLoggedIn = {
navController.navigate(Routes.AGENDA) {
popUpTo(Routes.LOGIN) { inclusive = true }
}
}
)
}
composable(Routes.AGENDA) {
val vm: AgendaViewModel = viewModel(factory = NcalViewModelFactory(app) { repo, _ -> AgendaViewModel(repo) })
AgendaScreen(
viewModel = vm,
onOpenItem = { item: CalendarItem ->
navController.navigate(editRoute(item.type.name, item.href))
},
onNewEvent = { navController.navigate(editRoute("EVENT", null)) },
onOpenTasks = { navController.navigate(Routes.TASKS) },
onOpenCollections = { navController.navigate(Routes.COLLECTIONS) },
onOpenMonth = { navController.navigate(Routes.MONTH) }
)
}
composable(Routes.MONTH) {
val vm: MonthViewModel = viewModel(factory = NcalViewModelFactory(app) { repo, _ -> MonthViewModel(repo) })
MonthScreen(
viewModel = vm,
onOpenItem = { item -> navController.navigate(editRoute(item.type.name, item.href)) },
onNewEvent = { navController.navigate(editRoute("EVENT", null)) },
onBack = { navController.popBackStack() }
)
}
composable(Routes.TASKS) {
val vm: TasksViewModel = viewModel(factory = NcalViewModelFactory(app) { repo, _ -> TasksViewModel(repo) })
TasksScreen(
viewModel = vm,
onOpenTask = { item -> navController.navigate(editRoute("TASK", item.href)) },
onNewTask = { navController.navigate(editRoute("TASK", null)) },
onBack = { navController.popBackStack() }
)
}
composable(Routes.COLLECTIONS) {
val vm: CollectionsViewModel = viewModel(factory = NcalViewModelFactory(app) { repo, _ -> CollectionsViewModel(repo) })
CollectionsScreen(viewModel = vm, onBack = { navController.popBackStack() })
}
composable(
route = Routes.EDIT,
arguments = listOf(
navArgument("type") { type = NavType.StringType },
navArgument("href") { type = NavType.StringType },
navArgument("calendarUrl") { type = NavType.StringType }
)
) {
val vm: ItemEditViewModel = viewModel(factory = NcalViewModelFactory(app) { repo, handle -> ItemEditViewModel(repo, handle) })
ItemEditScreen(viewModel = vm, onDone = { navController.popBackStack() })
}
}
}

108
ncal/app/src/main/java/com/homelab/ncal/ui/tasks/TasksScreen.kt Normal file
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package com.homelab.ncal.ui.tasks
import androidx.compose.foundation.clickable
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.lazy.items
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Add
import androidx.compose.material.icons.filled.ArrowBack
import androidx.compose.material.icons.filled.CheckCircle
import androidx.compose.material.icons.filled.RadioButtonUnchecked
import androidx.compose.material3.CenterAlignedTopAppBar
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.FloatingActionButton
import androidx.compose.material3.HorizontalDivider
import androidx.compose.material3.Icon
import androidx.compose.material3.IconButton
import androidx.compose.material3.ListItem
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.pulltorefresh.PullToRefreshBox
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.collectAsState
import androidx.compose.runtime.getValue
import androidx.compose.ui.Modifier
import androidx.compose.ui.text.style.TextDecoration
import androidx.compose.ui.text.style.TextOverflow
import androidx.compose.ui.unit.dp
import com.homelab.ncal.data.model.CalendarItem
import com.homelab.ncal.util.priorityColor
import java.time.Instant
import java.time.ZoneId
import java.time.format.DateTimeFormatter
@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun TasksScreen(
viewModel: TasksViewModel,
onOpenTask: (CalendarItem) -> Unit,
onNewTask: () -> Unit,
onBack: () -> Unit
) {
val state by viewModel.state.collectAsState()
Scaffold(
topBar = {
CenterAlignedTopAppBar(
title = { Text("Tasks") },
navigationIcon = { IconButton(onClick = onBack) { Icon(Icons.Filled.ArrowBack, null) } }
)
},
floatingActionButton = {
FloatingActionButton(onClick = onNewTask) { Icon(Icons.Filled.Add, "New task") }
}
) { padding ->
Column(Modifier.padding(padding).fillMaxSize()) {
state.error?.let {
Text(
it,
color = MaterialTheme.colorScheme.error,
maxLines = 3,
overflow = TextOverflow.Ellipsis,
modifier = Modifier.padding(16.dp)
)
}
PullToRefreshBox(
isRefreshing = state.refreshing,
onRefresh = viewModel::refresh,
modifier = Modifier.weight(1f)
) {
LazyColumn {
items(state.tasks, key = { it.item.href.ifEmpty { it.item.uid } }) { node ->
val task = node.item
ListItem(
modifier = Modifier
.padding(start = (node.depth * 24).dp)
.clickable { onOpenTask(task) },
headlineContent = {
Text(
task.summary,
textDecoration = if (task.completed) TextDecoration.LineThrough else null
)
},
supportingContent = {
task.due?.let { Text("Due " + it.toFormattedDate()) }
},
leadingContent = {
Icon(
imageVector = if (task.completed) Icons.Filled.CheckCircle else Icons.Filled.RadioButtonUnchecked,
contentDescription = "Toggle complete",
tint = if (task.completed) MaterialTheme.colorScheme.primary else (priorityColor(task.priority) ?: MaterialTheme.colorScheme.primary),
modifier = Modifier.clickable { viewModel.toggle(task) }
)
}
)
HorizontalDivider()
}
}
}
}
}
}
private fun Long.toFormattedDate(): String =
Instant.ofEpochMilli(this).atZone(ZoneId.systemDefault()).format(DateTimeFormatter.ofPattern("MMM d, h:mm a"))

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ncal/app/src/main/java/com/homelab/ncal/ui/tasks/TasksViewModel.kt Normal file
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package com.homelab.ncal.ui.tasks
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import com.homelab.ncal.data.model.CalendarItem
import com.homelab.ncal.data.repository.NextcloudRepository
import com.homelab.ncal.util.toUserMessage
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.SharingStarted
import kotlinx.coroutines.flow.StateFlow
import kotlinx.coroutines.flow.combine
import kotlinx.coroutines.flow.flatMapLatest
import kotlinx.coroutines.flow.stateIn
import kotlinx.coroutines.launch
/** A task plus how many levels deep it is nested under its ancestors (0 = top-level). */
data class TaskNode(val item: CalendarItem, val depth: Int)
data class TasksUiState(
val tasks: List<TaskNode> = emptyList(),
val refreshing: Boolean = false,
val error: String? = null
)
class TasksViewModel(private val repo: NextcloudRepository) : ViewModel() {
private val refreshing = MutableStateFlow(false)
private val error = MutableStateFlow<String?>(null)
private val tasks = repo.observeCollections()
.flatMapLatest { collections ->
val urls = collections.filter { it.enabled }.map { it.url }
repo.observeTasks(urls)
}
val state: StateFlow<TasksUiState> = combine(tasks, refreshing, error) { taskList, r, e ->
TasksUiState(buildTree(taskList), r, e)
}.stateIn(viewModelScope, SharingStarted.WhileSubscribed(5000), TasksUiState())
/** Orders tasks depth-first under their parent (via [CalendarItem.parentUid]), preserving each
* level's original sort order. Broken/cyclic parent references fall back to top-level. */
private fun buildTree(tasks: List<CalendarItem>): List<TaskNode> {
val allUids = tasks.map { it.uid }.toSet()
val childrenByParent = tasks.groupBy { it.parentUid }
val visited = mutableSetOf<String>()
val result = mutableListOf<TaskNode>()
fun addWithChildren(task: CalendarItem, depth: Int) {
if (!visited.add(task.uid)) return
result += TaskNode(task, depth)
childrenByParent[task.uid].orEmpty().forEach { addWithChildren(it, depth + 1) }
}
tasks.forEach { task ->
val isRoot = task.parentUid == null || task.parentUid !in allUids
if (isRoot) addWithChildren(task, 0)
}
tasks.forEach { task -> if (task.uid !in visited) addWithChildren(task, 0) }
return result
}
fun toggle(item: CalendarItem) {
viewModelScope.launch {
try {
repo.toggleTaskComplete(item)
error.value = null
} catch (e: Exception) {
android.util.Log.e("NCalError", "toggle failed for href=${item.href} calendar=${item.calendarUrl}", e)
error.value = e.toUserMessage()
}
}
}
fun refresh() {
refreshing.value = true
viewModelScope.launch {
try {
repo.syncItems()
error.value = null
} catch (e: Exception) {
android.util.Log.e("NCalError", "Tasks syncItems failed", e)
error.value = e.toUserMessage()
} finally {
refreshing.value = false
}
}
}
}

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ncal/app/src/main/java/com/homelab/ncal/ui/theme/Theme.kt Normal file
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package com.homelab.ncal.ui.theme
import android.os.Build
import androidx.compose.foundation.isSystemInDarkTheme
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.darkColorScheme
import androidx.compose.material3.dynamicDarkColorScheme
import androidx.compose.material3.dynamicLightColorScheme
import androidx.compose.material3.lightColorScheme
import androidx.compose.runtime.Composable
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.LocalContext
private val NcalBlue = Color(0xFF1F6FEB)
private val LightColors = lightColorScheme(primary = NcalBlue)
private val DarkColors = darkColorScheme(primary = Color(0xFF6EA8FE))
@Composable
fun NCalTheme(
darkTheme: Boolean = isSystemInDarkTheme(),
dynamicColor: Boolean = true,
content: @Composable () -> Unit
) {
val colorScheme = when {
dynamicColor && Build.VERSION.SDK_INT >= Build.VERSION_CODES.S -> {
val context = LocalContext.current
if (darkTheme) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
}
darkTheme -> DarkColors
else -> LightColors
}
MaterialTheme(
colorScheme = colorScheme,
content = content
)
}

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ncal/app/src/main/java/com/homelab/ncal/util/DateRangeUtils.kt Normal file
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package com.homelab.ncal.util
import com.homelab.ncal.data.model.CalendarItem
import java.time.Instant
import java.time.LocalDate
import java.time.ZoneId
/**
* The inclusive [LocalDate] range this item occupies on a calendar grid, in the device's
* local time zone. Multi-day all-day events store DTEND as the day *after* the last day
* per the iCalendar spec (an exclusive end) - this accounts for that so a 3-night trip
* shows on all 3 days, not just the day after it ends.
*/
fun CalendarItem.dateRange(zone: ZoneId = ZoneId.systemDefault()): ClosedRange<LocalDate>? {
val startMillis = start ?: due ?: return null
val startDate = Instant.ofEpochMilli(startMillis).atZone(zone).toLocalDate()
val endDate = end?.let {
val e = Instant.ofEpochMilli(it).atZone(zone).toLocalDate()
if (allDay && e.isAfter(startDate)) e.minusDays(1) else e
} ?: startDate
return startDate..maxOf(startDate, endDate)
}
/** Groups items by every day they occupy (not just their start day). */
fun List<CalendarItem>.groupByAllOccupiedDays(zone: ZoneId = ZoneId.systemDefault()): Map<LocalDate, List<CalendarItem>> {
val result = mutableMapOf<LocalDate, MutableList<CalendarItem>>()
for (item in this) {
val range = item.dateRange(zone) ?: continue
var d = range.start
var guard = 0
while (!d.isAfter(range.endInclusive) && guard++ < 400) {
result.getOrPut(d) { mutableListOf() }.add(item)
d = d.plusDays(1)
}
}
return result
}

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ncal/app/src/main/java/com/homelab/ncal/util/ErrorMessages.kt Normal file
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package com.homelab.ncal.util
import com.homelab.ncal.data.network.CalDavException
/**
* Short, user-facing summary for an error banner. [CalDavException] messages carry the full
* request URL and up to 300 chars of raw server response (useful in logs, but it reads like a
* crash dump if shown directly in the UI) - this collapses that down to one line.
*/
fun Throwable.toUserMessage(): String = when (this) {
is CalDavException -> when (httpCode) {
404 -> "Server couldn't find that item - it may have changed or been removed elsewhere."
401 -> "Login rejected - your stored credentials may have expired. Try logging in again."
403 -> "Server refused that change - this calendar may not allow it."
in 500..599 -> "Server error ($httpCode). Try again later."
null -> "Couldn't reach the server. Check your connection."
else -> "Server error ($httpCode)."
}
else -> message?.takeIf { it.isNotBlank() } ?: "Something went wrong."
}

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ncal/app/src/main/java/com/homelab/ncal/util/IcsMapper.kt Normal file
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package com.homelab.ncal.util
import biweekly.Biweekly
import biweekly.ICalendar
import biweekly.component.VAlarm
import biweekly.component.VEvent
import biweekly.component.VTodo
import biweekly.parameter.Related
import biweekly.property.RelatedTo
import biweekly.property.Status
import biweekly.property.Trigger
import biweekly.util.Duration
import com.homelab.ncal.data.model.CalendarItem
import com.homelab.ncal.data.model.ItemType
import com.homelab.ncal.data.model.TaskStatus
import java.util.Date
import java.util.UUID
object IcsMapper {
private fun Status?.toTaskStatus(): TaskStatus = when {
this == null -> TaskStatus.NEEDS_ACTION
isCompleted -> TaskStatus.COMPLETED
isCancelled -> TaskStatus.CANCELLED
isInProgress -> TaskStatus.IN_PROCESS
else -> TaskStatus.NEEDS_ACTION
}
private fun TaskStatus.toIcsStatus(): Status = when (this) {
TaskStatus.NEEDS_ACTION -> Status.needsAction()
TaskStatus.IN_PROCESS -> Status.inProgress()
TaskStatus.COMPLETED -> Status.completed()
TaskStatus.CANCELLED -> Status.cancelled()
}
/** Reads the "minutes before" values out of any duration-relative VALARMs on the component. */
private fun alarmMinutesBefore(alarms: List<VAlarm>): List<Int> =
alarms.mapNotNull { alarm ->
val duration = alarm.trigger?.duration ?: return@mapNotNull null
if (!duration.isPrior) return@mapNotNull null
(-duration.toMillis() / 60_000L).toInt()
}.distinct().sorted()
/** Parses a raw .ics blob (one VEVENT or VTODO) fetched from the server into our model. */
fun parse(ics: String, href: String, etag: String?, calendarUrl: String): CalendarItem? {
val ical = Biweekly.parse(ics).first() ?: return null
ical.events.firstOrNull()?.let { ev ->
val originalStart = ev.dateStart?.value?.time
val originalEnd = ev.dateEnd?.value?.time
val durationMillis = if (originalStart != null && originalEnd != null) originalEnd - originalStart else null
val recurrence = ev.recurrenceRule?.value
val (resolvedStart, resolvedEnd) = if (recurrence != null && originalStart != null) {
val next = RecurrenceUtils.nextOccurrence(originalStart, recurrence, System.currentTimeMillis())
if (next == null) {
android.util.Log.d("NCalParse", "EVENT '${ev.summary?.value}' recurrence ended (freq=${recurrence.frequency}, until=${recurrence.until}, count=${recurrence.count}) - dropping")
return null
}
next to (durationMillis?.let { next + it } ?: next)
} else {
originalStart to originalEnd
}
android.util.Log.d(
"NCalParse",
"EVENT '${ev.summary?.value}' calendar=$calendarUrl hasRRULE=${recurrence != null} " +
"originalStart=${originalStart?.let { java.util.Date(it) }} resolvedStart=${resolvedStart?.let { java.util.Date(it) }}"
)
return CalendarItem(
uid = ev.uid?.value ?: UUID.randomUUID().toString(),
href = href,
etag = etag,
calendarUrl = calendarUrl,
type = ItemType.EVENT,
summary = ev.summary?.value ?: "(no title)",
description = ev.description?.value ?: "",
location = ev.location?.value ?: "",
url = ev.url?.value ?: "",
start = resolvedStart,
end = resolvedEnd,
allDay = ev.dateStart?.value?.let { !hasTimeComponent(ics, "DTSTART") } ?: false,
priority = ev.priority?.value ?: 0,
reminderMinutes = alarmMinutesBefore(ev.alarms),
rawIcs = ics
)
}
ical.todos.firstOrNull()?.let { td ->
val originalDue = td.dateDue?.value?.time
val originalStart = td.dateStart?.value?.time
val startToDueMillis = if (originalStart != null && originalDue != null) originalDue - originalStart else null
val recurrence = td.recurrenceRule?.value
val resolvedDue = if (recurrence != null && originalDue != null) {
RecurrenceUtils.nextOccurrence(originalDue, recurrence, System.currentTimeMillis())
} else {
originalDue
}
val resolvedStart = if (recurrence != null && originalStart != null && resolvedDue != null) {
startToDueMillis?.let { resolvedDue - it }
} else {
originalStart
}
android.util.Log.d(
"NCalParse",
"TASK '${td.summary?.value}' calendar=$calendarUrl hasRRULE=${recurrence != null} " +
"originalDue=${originalDue?.let { java.util.Date(it) }} resolvedDue=${resolvedDue?.let { java.util.Date(it) }} " +
"originalStart=${originalStart?.let { java.util.Date(it) }} completed=${td.status?.isCompleted}"
)
val status = td.status.toTaskStatus()
val percentComplete = td.percentComplete?.value ?: (if (status == TaskStatus.COMPLETED) 100 else 0)
return CalendarItem(
uid = td.uid?.value ?: UUID.randomUUID().toString(),
href = href,
etag = etag,
calendarUrl = calendarUrl,
type = ItemType.TASK,
summary = td.summary?.value ?: "(no title)",
description = td.description?.value ?: "",
location = td.location?.value ?: "",
url = td.url?.value ?: "",
start = resolvedStart,
due = resolvedDue,
completed = status == TaskStatus.COMPLETED || percentComplete >= 100,
status = status,
percentComplete = percentComplete,
priority = td.priority?.value ?: 0,
parentUid = td.relatedTo.firstOrNull { it.relationshipType == null || it.relationshipType.value.equals("PARENT", ignoreCase = true) }?.value,
reminderMinutes = alarmMinutesBefore(td.alarms),
rawIcs = ics
)
}
android.util.Log.d("NCalParse", "FAILED to parse item at $href in calendar $calendarUrl - no VEVENT or VTODO found. Raw ics (first 300 chars): ${ics.take(300)}")
return null
}
/** Builds a full .ics document ready to PUT to the server for the given item. */
fun toIcs(item: CalendarItem): String {
val ical = ICalendar()
when (item.type) {
ItemType.EVENT -> {
val ev = VEvent()
ev.setUid(item.uid)
ev.setSummary(item.summary)
if (item.description.isNotBlank()) ev.setDescription(item.description)
if (item.location.isNotBlank()) ev.setLocation(item.location)
if (item.url.isNotBlank()) ev.setUrl(item.url)
item.start?.let { ev.setDateStart(Date(it), !item.allDay) }
item.end?.let { ev.setDateEnd(Date(it), !item.allDay) }
if (item.priority > 0) ev.setPriority(item.priority)
item.reminderMinutes.forEach { minutes ->
val duration = Duration.builder().prior(true).minutes(minutes).build()
ev.addAlarm(VAlarm.display(Trigger(duration, Related.START), item.summary))
}
ical.addEvent(ev)
}
ItemType.TASK -> {
val td = VTodo()
td.setUid(item.uid)
td.setSummary(item.summary)
if (item.description.isNotBlank()) td.setDescription(item.description)
if (item.location.isNotBlank()) td.setLocation(item.location)
if (item.url.isNotBlank()) td.setUrl(item.url)
item.start?.let { td.setDateStart(Date(it)) }
item.due?.let { td.setDateDue(Date(it)) }
if (item.priority > 0) td.setPriority(item.priority)
td.setStatus(item.status.toIcsStatus())
if (item.percentComplete > 0) td.setPercentComplete(item.percentComplete)
item.parentUid?.takeIf { it.isNotBlank() }?.let { td.addRelatedTo(RelatedTo(it)) }
if (item.due != null) {
item.reminderMinutes.forEach { minutes ->
val duration = Duration.builder().prior(true).minutes(minutes).build()
td.addAlarm(VAlarm.display(Trigger(duration, Related.END), item.summary))
}
}
ical.addTodo(td)
}
}
return Biweekly.write(ical).go()
}
/** Crude but effective: DTSTART/DTEND with a VALUE=DATE param (no time) means an all-day item. */
private fun hasTimeComponent(ics: String, property: String): Boolean {
val line = ics.lines().firstOrNull { it.startsWith(property) } ?: return true
return !line.contains("VALUE=DATE")
}
}

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ncal/app/src/main/java/com/homelab/ncal/util/MonthGridLayout.kt Normal file
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package com.homelab.ncal.util
import com.homelab.ncal.data.model.CalendarItem
import java.time.DayOfWeek
import java.time.LocalDate
import java.time.YearMonth
import java.time.temporal.ChronoUnit
/**
* Shared month-grid layout algorithm used by both the in-app Month screen and the home
* screen widget, so the two render identical week rows and event-bar packing.
*/
const val MAX_LANES_PER_WEEK = 4
fun weeksForMonth(month: YearMonth, firstDow: DayOfWeek): List<List<LocalDate>> {
val firstOfMonth = month.atDay(1)
val leadingBlanks = ((firstOfMonth.dayOfWeek.value - firstDow.value) + 7) % 7
val gridStart = firstOfMonth.minusDays(leadingBlanks.toLong())
val totalCells = leadingBlanks + month.lengthOfMonth()
val rows = (totalCells + 6) / 7
return (0 until rows).map { row -> (0 until 7).map { col -> gridStart.plusDays((row * 7 + col).toLong()) } }
}
data class WeekBar(val item: CalendarItem, val startCol: Int, val span: Int)
fun barFor(item: CalendarItem, week: List<LocalDate>): WeekBar? {
val range = item.dateRange() ?: return null
val weekStart = week.first()
val weekEnd = week.last()
if (range.endInclusive.isBefore(weekStart) || range.start.isAfter(weekEnd)) return null
val clippedStart = maxOf(range.start, weekStart)
val clippedEnd = minOf(range.endInclusive, weekEnd)
val startCol = ChronoUnit.DAYS.between(weekStart, clippedStart).toInt()
val endCol = ChronoUnit.DAYS.between(weekStart, clippedEnd).toInt()
return WeekBar(item, startCol, endCol - startCol + 1)
}
/** Greedy interval packing: assign each bar to the first lane whose last-occupied column has passed. */
fun packLanes(bars: List<WeekBar>, maxLanes: Int): List<List<WeekBar>> {
val lanes = mutableListOf<MutableList<WeekBar>>()
val laneEnd = mutableListOf<Int>()
for (bar in bars) {
var placed = false
for (i in lanes.indices) {
if (laneEnd[i] < bar.startCol) {
lanes[i].add(bar)
laneEnd[i] = bar.startCol + bar.span - 1
placed = true
break
}
}
if (!placed && lanes.size < maxLanes) {
lanes.add(mutableListOf(bar))
laneEnd.add(bar.startCol + bar.span - 1)
}
// If every lane is full, this bar is silently dropped from the grid for that week -
// it's still visible from the day-agenda list below, just not as a chip up top.
}
return lanes
}
/** Bars + packed lanes for a single week, ready to render. */
fun lanesForWeek(week: List<LocalDate>, itemsByDay: Map<LocalDate, List<CalendarItem>>, maxLanes: Int = MAX_LANES_PER_WEEK): List<List<WeekBar>> {
val itemsThisWeek = week.flatMap { itemsByDay[it].orEmpty() }.distinctBy { it.href.ifEmpty { it.uid } }
val bars = itemsThisWeek.mapNotNull { barFor(it, week) }
.sortedWith(compareBy({ it.startCol }, { -it.span }))
return packLanes(bars, maxLanes)
}

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ncal/app/src/main/java/com/homelab/ncal/util/PriorityColors.kt Normal file
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package com.homelab.ncal.util
import androidx.compose.ui.graphics.Color
/**
* iCal PRIORITY (1-9) color convention specified for NCal: 1-4 is high/red, 5 is medium/yellow,
* 6-9 is low/blue. 0 (undefined) has no color.
*/
fun priorityColor(priority: Int): Color? = when {
priority in 1..4 -> Color(0xFFE53935)
priority == 5 -> Color(0xFFF9A825)
priority in 6..9 -> Color(0xFF1E88E5)
else -> null
}
fun priorityLabel(priority: Int): String = when {
priority == 0 -> "None"
priority in 1..4 -> "$priority – High"
priority == 5 -> "5 – Medium"
else -> "$priority – Low"
}

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ncal/app/src/main/java/com/homelab/ncal/util/RecurrenceUtils.kt Normal file
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package com.homelab.ncal.util
import biweekly.util.Frequency
import biweekly.util.Recurrence
import java.time.Instant
import java.time.ZoneId
import java.time.ZonedDateTime
/**
* Minimal RRULE evaluator. CalDAV servers return the *master* VEVENT/VTODO for a
* recurring item (with its original, possibly long-past, DTSTART) - they don't expand
* occurrences for us in the calendar-data payload. Without this, a weekly meeting or a
* yearly birthday would show once, forever, on the date it was first created.
*
* This covers the common cases - FREQ=DAILY/WEEKLY/MONTHLY/YEARLY with INTERVAL, COUNT,
* and UNTIL. It intentionally does not implement BYDAY/BYMONTH/BYSETPOS/etc - those cover
* a small minority of everyday personal-calendar recurrences (e.g. "every 2nd Tuesday").
* Anything using those rule parts still round-trips correctly on save/edit (the raw ICS
* is preserved via [com.homelab.ncal.data.model.CalendarItem.rawIcs]); it just won't be
* *re-dated* for display, and will show at its original occurrence like before.
*/
object RecurrenceUtils {
private const val MAX_ITERATIONS = 10_000
/**
* Returns the timestamp (epoch millis) of the next occurrence on/after [referenceMillis],
* or null if the series has already ended (past UNTIL/COUNT) or uses an unsupported rule.
*/
fun nextOccurrence(originalStartMillis: Long, recurrence: Recurrence, referenceMillis: Long): Long? {
val zone = ZoneId.systemDefault()
val freq = recurrence.frequency ?: return null
if (freq !in SUPPORTED_FREQUENCIES) return originalStartMillis // fall back to showing the master as-is
val interval = (recurrence.interval ?: 1).coerceAtLeast(1)
val until: ZonedDateTime? = recurrence.until?.let {
Instant.ofEpochMilli(it.time).atZone(zone)
}
val maxCount = recurrence.count
var current = Instant.ofEpochMilli(originalStartMillis).atZone(zone)
val reference = Instant.ofEpochMilli(referenceMillis).atZone(zone)
if (!current.isBefore(reference)) return current.toInstant().toEpochMilli()
var occurrenceIndex = 1
var iterations = 0
while (current.isBefore(reference)) {
if (iterations++ > MAX_ITERATIONS) return null
current = when (freq) {
Frequency.DAILY -> current.plusDays(interval.toLong())
Frequency.WEEKLY -> current.plusWeeks(interval.toLong())
Frequency.MONTHLY -> current.plusMonths(interval.toLong())
Frequency.YEARLY -> current.plusYears(interval.toLong())
else -> return null
}
occurrenceIndex++
if (maxCount != null && occurrenceIndex > maxCount) return null
if (until != null && current.isAfter(until)) return null
}
return current.toInstant().toEpochMilli()
}
private val SUPPORTED_FREQUENCIES = setOf(Frequency.DAILY, Frequency.WEEKLY, Frequency.MONTHLY, Frequency.YEARLY)
}

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ncal/app/src/main/java/com/homelab/ncal/widget/EncryptedWidgetState.kt Normal file
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package com.homelab.ncal.widget
import android.content.Context
import android.security.keystore.KeyGenParameterSpec
import android.security.keystore.KeyProperties
import androidx.datastore.core.CorruptionException
import androidx.datastore.core.DataStore
import androidx.datastore.core.DataStoreFactory
import androidx.datastore.core.Serializer
import androidx.datastore.dataStoreFile
import androidx.glance.state.GlanceStateDefinition
import java.io.File
import java.io.InputStream
import java.io.OutputStream
import java.security.KeyStore
import javax.crypto.Cipher
import javax.crypto.KeyGenerator
import javax.crypto.SecretKey
import javax.crypto.spec.GCMParameterSpec
private const val KEYSTORE_ALIAS = "ncal_widget_state_key"
private const val GCM_IV_LENGTH = 12
private const val GCM_TAG_LENGTH_BITS = 128
private fun widgetStateKey(): SecretKey {
val keyStore = KeyStore.getInstance("AndroidKeyStore").apply { load(null) }
(keyStore.getKey(KEYSTORE_ALIAS, null) as? SecretKey)?.let { return it }
val generator = KeyGenerator.getInstance(KeyProperties.KEY_ALGORITHM_AES, "AndroidKeyStore")
generator.init(
KeyGenParameterSpec.Builder(KEYSTORE_ALIAS, KeyProperties.PURPOSE_ENCRYPT or KeyProperties.PURPOSE_DECRYPT)
.setBlockModes(KeyProperties.BLOCK_MODE_GCM)
.setEncryptionPaddings(KeyProperties.ENCRYPTION_PADDING_NONE)
.build()
)
return generator.generateKey()
}
/**
* Encrypts the widget's persisted state (currently just "which month is this instance
* showing") at rest via an Android Keystore-backed AES key. The value itself is trivial -
* an integer month offset, no calendar content - but the goal is nothing the app writes to
* disk is left in plaintext, so it gets the same treatment as everything else.
*/
private object EncryptedIntSerializer : Serializer<Int> {
override val defaultValue: Int = 0
override suspend fun readFrom(input: InputStream): Int {
val bytes = input.readBytes()
if (bytes.isEmpty()) return defaultValue
return try {
val iv = bytes.copyOfRange(0, GCM_IV_LENGTH)
val cipherText = bytes.copyOfRange(GCM_IV_LENGTH, bytes.size)
val cipher = Cipher.getInstance("AES/GCM/NoPadding")
cipher.init(Cipher.DECRYPT_MODE, widgetStateKey(), GCMParameterSpec(GCM_TAG_LENGTH_BITS, iv))
String(cipher.doFinal(cipherText)).toInt()
} catch (e: Exception) {
throw CorruptionException("Could not decrypt widget state", e)
}
}
override suspend fun writeTo(t: Int, output: OutputStream) {
val cipher = Cipher.getInstance("AES/GCM/NoPadding")
cipher.init(Cipher.ENCRYPT_MODE, widgetStateKey())
val cipherText = cipher.doFinal(t.toString().toByteArray())
output.write(cipher.iv)
output.write(cipherText)
}
}
object EncryptedMonthOffsetStateDefinition : GlanceStateDefinition<Int> {
private const val FILE_PREFIX = "widget_month_offset_"
override suspend fun getDataStore(context: Context, fileKey: String): DataStore<Int> =
DataStoreFactory.create(serializer = EncryptedIntSerializer) { getLocation(context, fileKey) }
override fun getLocation(context: Context, fileKey: String): File =
context.dataStoreFile("$FILE_PREFIX$fileKey")
}

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ncal/app/src/main/java/com/homelab/ncal/widget/MonthGridWidget.kt Normal file
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package com.homelab.ncal.widget
import android.content.Context
import android.content.Intent
import androidx.compose.runtime.Composable
import androidx.compose.ui.unit.Dp
import androidx.compose.ui.unit.DpSize
import androidx.compose.ui.unit.TextUnit
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import androidx.glance.GlanceId
import androidx.glance.GlanceModifier
import androidx.glance.GlanceTheme
import androidx.glance.LocalContext
import androidx.glance.LocalSize
import androidx.glance.action.clickable
import androidx.glance.appwidget.GlanceAppWidget
import androidx.glance.appwidget.action.actionRunCallback
import androidx.glance.appwidget.action.actionStartActivity
import androidx.glance.appwidget.cornerRadius
import androidx.glance.appwidget.provideContent
import androidx.glance.appwidget.state.getAppWidgetState
import androidx.glance.background
import androidx.glance.layout.Alignment
import androidx.glance.layout.Box
import androidx.glance.layout.Column
import androidx.glance.layout.Row
import androidx.glance.layout.Spacer
import androidx.glance.layout.fillMaxSize
import androidx.glance.layout.fillMaxWidth
import androidx.glance.layout.height
import androidx.glance.layout.padding
import androidx.glance.layout.size
import androidx.glance.layout.width
import androidx.glance.text.FontWeight
import androidx.glance.text.Text
import androidx.glance.text.TextAlign
import androidx.glance.text.TextDecoration
import androidx.glance.text.TextStyle
import com.homelab.ncal.MainActivity
import com.homelab.ncal.NcalApplication
import com.homelab.ncal.data.model.CalendarItem
import com.homelab.ncal.data.model.ItemType
import com.homelab.ncal.util.groupByAllOccupiedDays
import com.homelab.ncal.util.lanesForWeek
import com.homelab.ncal.util.priorityColor
import com.homelab.ncal.util.weeksForMonth
import kotlinx.coroutines.flow.first
import java.time.LocalDate
import java.time.YearMonth
import java.time.ZoneId
import java.time.format.TextStyle as JavaTextStyle
import java.time.temporal.WeekFields
import java.util.Locale
/**
* Font/element sizes and how many event/task lanes to show per week, derived from the widget's
* current on-screen size so a resized-larger widget actually uses the extra space instead of
* showing the same small grid surrounded by blank margin.
*/
private data class MonthWidgetScale(
val headerFontSize: TextUnit,
val weekdayFontSize: TextUnit,
val dayFontSize: TextUnit,
val dayCircleSize: Dp,
val itemFontSize: TextUnit,
val laneHeight: Dp,
val maxLanes: Int
)
private fun monthWidgetScaleFor(size: DpSize): MonthWidgetScale {
val compact = size.width < 280.dp
val expanded = size.width >= 380.dp
val maxLanes = when {
size.height < 280.dp -> 2
size.height >= 380.dp -> 4
else -> 3
}
return when {
compact -> MonthWidgetScale(14.sp, 10.sp, 11.sp, 20.dp, 10.sp, 16.dp, maxLanes)
expanded -> MonthWidgetScale(18.sp, 13.sp, 15.sp, 28.dp, 13.sp, 20.dp, maxLanes)
else -> MonthWidgetScale(16.sp, 11.sp, 13.sp, 24.dp, 11.sp, 18.dp, maxLanes)
}
}
/**
* Home screen widget mirroring the in-app Month screen: a one-month grid with event pills
* and task dots visible on each day. Reuses the exact same [weeksForMonth]/[lanesForWeek]
* layout algorithm as [com.homelab.ncal.ui.month.MonthScreen] so the two stay in sync.
*
* Glance's Row/Column only support equal-weight distribution (no proportional weights like
* Compose's `Modifier.weight(n)`), so multi-day event bars are sized with explicit `Dp` widths
* computed from [LocalSize] instead.
*/
class MonthGridWidget : GlanceAppWidget() {
override val stateDefinition = EncryptedMonthOffsetStateDefinition
override suspend fun provideGlance(context: Context, id: GlanceId) {
val offset = getAppWidgetState(context, EncryptedMonthOffsetStateDefinition, id)
val month = YearMonth.now().plusMonths(offset.toLong())
val repo = (context.applicationContext as NcalApplication).repository
val urls = repo.observeCollections().first().filter { it.enabled }.map { it.url }
val itemsByDay = repo.observeItems(urls).first().groupByAllOccupiedDays(ZoneId.systemDefault())
provideContent {
MonthWidgetContent(month = month, itemsByDay = itemsByDay)
}
}
}
@Composable
private fun MonthWidgetContent(month: YearMonth, itemsByDay: Map<LocalDate, List<CalendarItem>>) {
val context = LocalContext.current
val scale = monthWidgetScaleFor(LocalSize.current)
GlanceTheme {
Column(
modifier = GlanceModifier
.fillMaxSize()
.background(GlanceTheme.colors.background)
.clickable(actionStartActivity(Intent(context, MainActivity::class.java)))
.padding(8.dp)
) {
WidgetHeader(month, scale)
WidgetWeekdayLabels(scale)
WidgetMonthGrid(month, itemsByDay, scale)
}
}
}
@Composable
private fun WidgetHeader(month: YearMonth, scale: MonthWidgetScale) {
Row(
modifier = GlanceModifier.fillMaxWidth().padding(bottom = 4.dp),
verticalAlignment = Alignment.CenterVertically
) {
Text(
"‹",
modifier = GlanceModifier.clickable(actionRunCallback<PrevMonthAction>()).padding(8.dp),
style = TextStyle(color = GlanceTheme.colors.onSurface, fontWeight = FontWeight.Bold, fontSize = scale.headerFontSize)
)
Text(
"${month.month.getDisplayName(JavaTextStyle.FULL, Locale.getDefault())} ${month.year}",
modifier = GlanceModifier.defaultWeight(),
style = TextStyle(
color = GlanceTheme.colors.onSurface,
fontWeight = FontWeight.Bold,
fontSize = scale.headerFontSize,
textAlign = TextAlign.Center
)
)
Text(
"›",
modifier = GlanceModifier.clickable(actionRunCallback<NextMonthAction>()).padding(8.dp),
style = TextStyle(color = GlanceTheme.colors.onSurface, fontWeight = FontWeight.Bold, fontSize = scale.headerFontSize)
)
}
}
@Composable
private fun WidgetWeekdayLabels(scale: MonthWidgetScale) {
val firstDow = WeekFields.of(Locale.getDefault()).firstDayOfWeek
val days = (0..6).map { firstDow.plus(it.toLong()) }
Row(modifier = GlanceModifier.fillMaxWidth()) {
days.forEach { dow ->
Box(modifier = GlanceModifier.defaultWeight(), contentAlignment = Alignment.Center) {
Text(
dow.getDisplayName(JavaTextStyle.SHORT, Locale.getDefault()),
style = TextStyle(color = GlanceTheme.colors.onSurfaceVariant, fontSize = scale.weekdayFontSize)
)
}
}
}
}
@Composable
private fun WidgetMonthGrid(month: YearMonth, itemsByDay: Map<LocalDate, List<CalendarItem>>, scale: MonthWidgetScale) {
val firstDow = WeekFields.of(Locale.getDefault()).firstDayOfWeek
val weeks = weeksForMonth(month, firstDow)
val today = LocalDate.now()
// Available width = widget width minus the outer 8.dp+8.dp padding applied in MonthWidgetContent.
val columnWidth = (LocalSize.current.width - 16.dp) / 7
Column(modifier = GlanceModifier.fillMaxSize()) {
// defaultWeight() requires a ColumnScope receiver, only available here (inside Column's
// own content lambda) - computed here and passed down rather than built inside
// WidgetWeekRow, which is a separate composable with no ColumnScope in lexical scope.
weeks.forEach { week ->
WidgetWeekRow(week, month, itemsByDay, today, columnWidth, scale, GlanceModifier.fillMaxWidth().defaultWeight())
}
}
}
@Composable
private fun WidgetWeekRow(
week: List<LocalDate>,
month: YearMonth,
itemsByDay: Map<LocalDate, List<CalendarItem>>,
today: LocalDate,
columnWidth: Dp,
scale: MonthWidgetScale,
modifier: GlanceModifier
) {
val lanes = lanesForWeek(week, itemsByDay, maxLanes = scale.maxLanes)
val context = LocalContext.current
// Each week claims an equal share of any extra vertical room a resized-larger widget has -
// without this, leftover space collects as one dead gap below the last week instead of
// extra breathing room between weeks.
Box(
modifier = modifier,
contentAlignment = Alignment.Center
) {
Column(modifier = GlanceModifier.fillMaxWidth().padding(bottom = 2.dp)) {
Row(modifier = GlanceModifier.fillMaxWidth()) {
week.forEach { date ->
val inMonth = YearMonth.from(date) == month
val isToday = date == today
Box(
modifier = GlanceModifier
.defaultWeight()
.clickable(actionStartActivity(Intent(context, MainActivity::class.java))),
contentAlignment = Alignment.Center
) {
var circle = GlanceModifier.size(scale.dayCircleSize).cornerRadius(scale.dayCircleSize / 2)
if (isToday) circle = circle.background(GlanceTheme.colors.primaryContainer)
Box(modifier = circle, contentAlignment = Alignment.Center) {
Text(
date.dayOfMonth.toString(),
style = TextStyle(
color = if (!inMonth) GlanceTheme.colors.onSurfaceVariant else GlanceTheme.colors.onSurface,
fontSize = scale.dayFontSize,
fontWeight = if (isToday) FontWeight.Bold else FontWeight.Normal
)
)
}
}
}
}
lanes.forEach { lane ->
Row(modifier = GlanceModifier.fillMaxWidth().padding(vertical = 1.dp)) {
var col = 0
while (col < 7) {
val bar = lane.firstOrNull { it.startCol == col }
if (bar != null) {
WidgetItemBar(item = bar.item, width = columnWidth * bar.span, scale = scale)
col += bar.span
} else {
Spacer(modifier = GlanceModifier.width(columnWidth).height(scale.laneHeight))
col += 1
}
}
}
}
}
}
}
/** Mirrors MonthScreen's GridItemRow: events are a solid pill, tasks are a dot + text. */
@Composable
private fun WidgetItemBar(item: CalendarItem, width: Dp, scale: MonthWidgetScale) {
val context = LocalContext.current
val intent = Intent(context, MainActivity::class.java).apply {
putExtra(MainActivity.EXTRA_ITEM_TYPE, item.type.name)
putExtra(MainActivity.EXTRA_ITEM_HREF, item.href)
}
if (item.type == ItemType.TASK) {
// A Row's defaultWeight() doesn't reliably bound the Text's width inside a fixed-width
// Row under Glance/RemoteViews, so stack dot+text in a Box (with fillMaxWidth on the
// Text, reserving left padding for the dot) instead of laying them out side by side.
// A `background` is also required for Glance/RemoteViews to actually enforce the exact
// width below (without one, width() is silently ignored and content overflows) - use the
// same color as the page background so it stays visually invisible, matching the app.
Box(
modifier = GlanceModifier
.width(width)
.height(scale.laneHeight)
.background(GlanceTheme.colors.background)
.clickable(actionStartActivity(intent))
.padding(horizontal = 2.dp),
contentAlignment = Alignment.CenterStart
) {
Text(
item.summary,
modifier = GlanceModifier.fillMaxWidth().padding(start = if (!item.completed) 8.dp else 0.dp),
maxLines = 1,
style = TextStyle(
color = if (item.completed) GlanceTheme.colors.onSurfaceVariant else GlanceTheme.colors.onSurface,
fontSize = scale.itemFontSize,
textDecoration = if (item.completed) TextDecoration.LineThrough else TextDecoration.None
)
)
if (!item.completed) {
val dotColor = priorityColor(item.priority)
var dot = GlanceModifier.size(5.dp).cornerRadius(3.dp)
dot = if (dotColor != null) dot.background(dotColor) else dot.background(GlanceTheme.colors.tertiary)
Box(modifier = dot) {}
}
}
} else {
Box(
modifier = GlanceModifier
.width(width)
.height(scale.laneHeight)
.cornerRadius(4.dp)
.background(GlanceTheme.colors.primary)
.clickable(actionStartActivity(intent))
.padding(horizontal = 3.dp),
contentAlignment = Alignment.CenterStart
) {
Text(
item.summary,
modifier = GlanceModifier.fillMaxWidth(),
maxLines = 1,
style = TextStyle(
color = GlanceTheme.colors.onPrimary,
fontSize = scale.itemFontSize,
textDecoration = if (item.completed) TextDecoration.LineThrough else TextDecoration.None
)
)
}
}
}

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ncal/app/src/main/java/com/homelab/ncal/widget/MonthGridWidgetReceiver.kt Normal file
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package com.homelab.ncal.widget
import androidx.glance.appwidget.GlanceAppWidget
import androidx.glance.appwidget.GlanceAppWidgetReceiver
class MonthGridWidgetReceiver : GlanceAppWidgetReceiver() {
override val glanceAppWidget: GlanceAppWidget = MonthGridWidget()
}

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ncal/app/src/main/java/com/homelab/ncal/widget/MonthWidgetActions.kt Normal file
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package com.homelab.ncal.widget
import android.content.Context
import androidx.glance.GlanceId
import androidx.glance.action.ActionParameters
import androidx.glance.appwidget.action.ActionCallback
import androidx.glance.appwidget.state.updateAppWidgetState
import androidx.glance.appwidget.updateAll
class PrevMonthAction : ActionCallback {
override suspend fun onAction(context: Context, glanceId: GlanceId, parameters: ActionParameters) {
updateAppWidgetState(context, EncryptedMonthOffsetStateDefinition, glanceId) { offset -> offset - 1 }
MonthGridWidget().updateAll(context)
}
}
class NextMonthAction : ActionCallback {
override suspend fun onAction(context: Context, glanceId: GlanceId, parameters: ActionParameters) {
updateAppWidgetState(context, EncryptedMonthOffsetStateDefinition, glanceId) { offset -> offset + 1 }
MonthGridWidget().updateAll(context)
}
}

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ncal/app/src/main/java/com/homelab/ncal/widget/NextTasksWidget.kt Normal file
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package com.homelab.ncal.widget
import android.content.Context
import android.content.Intent
import androidx.compose.runtime.Composable
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import androidx.glance.GlanceId
import androidx.glance.GlanceModifier
import androidx.glance.GlanceTheme
import androidx.glance.LocalContext
import androidx.glance.action.ActionParameters
import androidx.glance.action.actionParametersOf
import androidx.glance.action.clickable
import androidx.glance.appwidget.GlanceAppWidget
import androidx.glance.appwidget.action.actionRunCallback
import androidx.glance.appwidget.action.actionStartActivity
import androidx.glance.appwidget.cornerRadius
import androidx.glance.appwidget.lazy.LazyColumn
import androidx.glance.appwidget.lazy.items
import androidx.glance.appwidget.provideContent
import androidx.glance.background
import androidx.glance.layout.Alignment
import androidx.glance.layout.Box
import androidx.glance.layout.Column
import androidx.glance.layout.Row
import androidx.glance.layout.Spacer
import androidx.glance.layout.fillMaxSize
import androidx.glance.layout.fillMaxWidth
import androidx.glance.layout.padding
import androidx.glance.layout.size
import androidx.glance.layout.width
import androidx.glance.text.FontWeight
import androidx.glance.text.Text
import androidx.glance.text.TextStyle
import com.homelab.ncal.MainActivity
import com.homelab.ncal.NcalApplication
import com.homelab.ncal.data.model.CalendarItem
import com.homelab.ncal.util.priorityColor
import kotlinx.coroutines.flow.first
import java.time.Instant
import java.time.LocalDate
import java.time.ZoneId
import java.time.format.DateTimeFormatter
import java.util.Locale
internal val taskHrefKey = ActionParameters.Key<String>("task_href")
/** Home screen widget listing incomplete tasks, grouped and ordered by due date - the widget
* equivalent of the in-app Tasks list, minus the subtask tree (kept flat/chronological here
* since the point of a widget is a quick "what's next" glance, not full hierarchy browsing). */
class NextTasksWidget : GlanceAppWidget() {
override suspend fun provideGlance(context: Context, id: GlanceId) {
val repo = (context.applicationContext as NcalApplication).repository
val urls = repo.observeCollections().first().filter { it.enabled }.map { it.url }
val zone = ZoneId.systemDefault()
val groups = repo.observeTasks(urls).first()
.filter { !it.completed }
.sortedWith(compareBy({ it.due == null }, { it.due }))
.groupBy { it.due?.let { d -> Instant.ofEpochMilli(d).atZone(zone).toLocalDate() } }
.toList()
.sortedWith(compareBy(nullsLast()) { it.first })
provideContent {
NextTasksContent(groups)
}
}
}
@Composable
private fun NextTasksContent(groups: List<Pair<LocalDate?, List<CalendarItem>>>) {
val context = LocalContext.current
GlanceTheme {
Column(
modifier = GlanceModifier
.fillMaxSize()
.background(GlanceTheme.colors.background)
.clickable(actionStartActivity(Intent(context, MainActivity::class.java)))
.padding(8.dp)
) {
Text(
"Tasks",
style = TextStyle(color = GlanceTheme.colors.onSurface, fontWeight = FontWeight.Bold, fontSize = 14.sp),
modifier = GlanceModifier.padding(bottom = 4.dp)
)
if (groups.isEmpty()) {
Text(
"Nothing due",
style = TextStyle(color = GlanceTheme.colors.onSurfaceVariant, fontSize = 12.sp)
)
} else {
LazyColumn(modifier = GlanceModifier.fillMaxSize()) {
groups.forEach { (date, tasksForDate) ->
item(itemId = date?.toEpochDay() ?: -1L) {
Text(
text = date?.let {
it.format(DateTimeFormatter.ofPattern("EEE, MMM d", Locale.getDefault()))
} ?: "No due date",
style = TextStyle(
color = GlanceTheme.colors.primary,
fontWeight = FontWeight.Bold,
fontSize = 12.sp
),
modifier = GlanceModifier.padding(top = 6.dp, bottom = 2.dp)
)
}
items(tasksForDate, itemId = { it.href.hashCode().toLong() }) { task ->
TaskRow(task)
}
}
}
}
}
}
}
@Composable
private fun TaskRow(item: CalendarItem) {
val context = LocalContext.current
val intent = Intent(context, MainActivity::class.java).apply {
putExtra(MainActivity.EXTRA_ITEM_TYPE, item.type.name)
putExtra(MainActivity.EXTRA_ITEM_HREF, item.href)
}
Row(
modifier = GlanceModifier
.fillMaxWidth()
.background(GlanceTheme.colors.background)
.clickable(actionStartActivity(intent))
.padding(vertical = 3.dp),
verticalAlignment = Alignment.CenterVertically
) {
Box(
modifier = GlanceModifier
.size(16.dp)
.clickable(actionRunCallback<ToggleTaskAction>(actionParametersOf(taskHrefKey to item.href))),
contentAlignment = Alignment.Center
) {
val dotColor = priorityColor(item.priority)
var dot = GlanceModifier.size(10.dp).cornerRadius(5.dp)
dot = if (dotColor != null) dot.background(dotColor) else dot.background(GlanceTheme.colors.tertiary)
Box(modifier = dot) {}
}
Spacer(modifier = GlanceModifier.width(6.dp))
Text(
item.summary,
modifier = GlanceModifier.defaultWeight().background(GlanceTheme.colors.background),
maxLines = 1,
style = TextStyle(color = GlanceTheme.colors.onSurface, fontSize = 12.sp)
)
item.due?.let { due ->
Spacer(modifier = GlanceModifier.width(4.dp))
Text(
formatTime(due),
style = TextStyle(color = GlanceTheme.colors.onSurfaceVariant, fontSize = 10.sp)
)
}
}
}
private fun formatTime(millis: Long): String =
Instant.ofEpochMilli(millis).atZone(ZoneId.systemDefault())
.format(DateTimeFormatter.ofPattern("h:mm a", Locale.getDefault()))

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ncal/app/src/main/java/com/homelab/ncal/widget/NextTasksWidgetActions.kt Normal file
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package com.homelab.ncal.widget
import android.content.Context
import androidx.glance.GlanceId
import androidx.glance.action.ActionParameters
import androidx.glance.appwidget.action.ActionCallback
import com.homelab.ncal.NcalApplication
/** [com.homelab.ncal.data.repository.NextcloudRepository.save] already triggers a widget
* refresh for every write, so toggling completion here doesn't need its own updateAll call. */
class ToggleTaskAction : ActionCallback {
override suspend fun onAction(context: Context, glanceId: GlanceId, parameters: ActionParameters) {
val href = parameters[taskHrefKey] ?: return
val repo = (context.applicationContext as NcalApplication).repository
val item = repo.itemByHref(href) ?: return
repo.toggleTaskComplete(item)
}
}

8
ncal/app/src/main/java/com/homelab/ncal/widget/NextTasksWidgetReceiver.kt Normal file
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package com.homelab.ncal.widget
import androidx.glance.appwidget.GlanceAppWidget
import androidx.glance.appwidget.GlanceAppWidgetReceiver
class NextTasksWidgetReceiver : GlanceAppWidgetReceiver() {
override val glanceAppWidget: GlanceAppWidget = NextTasksWidget()
}

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ncal/app/src/main/res/drawable/ic_launcher_foreground.xml Normal file
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<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="108dp"
android:height="108dp"
android:viewportWidth="108"
android:viewportHeight="108">
<path
android:fillColor="#FFFFFF"
android:pathData="M30,24 h48 a6,6 0 0 1 6,6 v48 a6,6 0 0 1 -6,6 h-48 a6,6 0 0 1 -6,-6 v-48 a6,6 0 0 1 6,-6 z M30,42 h48 M40,18 v12 M68,18 v12 M46,58 l8,8 l16,-16"
android:strokeColor="#FFFFFF"
android:strokeWidth="4"
android:fillType="evenOdd" />
</vector>

11
ncal/app/src/main/res/layout/glance_default_loading_layout.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ProgressBar
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center" />
</FrameLayout>

5
ncal/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
<background android:drawable="@color/ic_launcher_background" />
<foreground android:drawable="@drawable/ic_launcher_foreground" />
</adaptive-icon>

3
ncal/app/src/main/res/values/colors.xml Normal file
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<resources>
<color name="ic_launcher_background">#1F6FEB</color>
</resources>

7
ncal/app/src/main/res/values/strings.xml Normal file
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<resources>
<string name="app_name">NCal</string>
<string name="month_grid_widget_label">Calendar Month</string>
<string name="month_grid_widget_description">Shows the current month at a glance with your events.</string>
<string name="next_tasks_widget_label">Tasks</string>
<string name="next_tasks_widget_description">Shows your upcoming tasks.</string>
</resources>

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ncal/app/src/main/res/values/themes.xml Normal file
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<resources>
<style name="Theme.NCal" parent="android:Theme.Material.Light.NoActionBar" />
</resources>

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ncal/app/src/main/res/xml/month_grid_widget_info.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
android:minWidth="250dp"
android:minHeight="250dp"
android:targetCellWidth="4"
android:targetCellHeight="4"
android:resizeMode="horizontal|vertical"
android:widgetCategory="home_screen"
android:updatePeriodMillis="1800000"
android:description="@string/month_grid_widget_description"
android:initialLayout="@layout/glance_default_loading_layout" />

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ncal/app/src/main/res/xml/next_tasks_widget_info.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
android:minWidth="180dp"
android:minHeight="250dp"
android:targetCellWidth="3"
android:targetCellHeight="4"
android:resizeMode="horizontal|vertical"
android:widgetCategory="home_screen"
android:updatePeriodMillis="1800000"
android:description="@string/next_tasks_widget_description"
android:initialLayout="@layout/glance_default_loading_layout" />

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ncal/build.gradle.kts Normal file
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// Top-level build file
plugins {
id("com.android.application") version "8.3.2" apply false
id("org.jetbrains.kotlin.android") version "1.9.24" apply false
id("com.google.devtools.ksp") version "1.9.24-1.0.20" apply false
}

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ncal/gradle.properties Normal file
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org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
android.useAndroidX=true
kotlin.code.style=official
android.nonTransitiveRClass=true

BIN
ncal/gradle/wrapper/gradle-wrapper.jar vendored Normal file
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Binary file not shown.

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ncal/gradle/wrapper/gradle-wrapper.properties vendored Normal file
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distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-8.6-bin.zip
networkTimeout=10000
validateDistributionUrl=true
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists

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ncal/gradlew vendored Executable file
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#!/bin/sh
#
# Copyright © 2015-2021 the original authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
##############################################################################
#
# Gradle start up script for POSIX generated by Gradle.
#
# Important for running:
#
# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
# noncompliant, but you have some other compliant shell such as ksh or
# bash, then to run this script, type that shell name before the whole
# command line, like:
#
# ksh Gradle
#
# Busybox and similar reduced shells will NOT work, because this script
# requires all of these POSIX shell features:
# * functions;
# * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
# «${var#prefix}», «${var%suffix}», and «$( cmd )»;
# * compound commands having a testable exit status, especially «case»;
# * various built-in commands including «command», «set», and «ulimit».
#
# Important for patching:
#
# (2) This script targets any POSIX shell, so it avoids extensions provided
# by Bash, Ksh, etc; in particular arrays are avoided.
#
# The "traditional" practice of packing multiple parameters into a
# space-separated string is a well documented source of bugs and security
# problems, so this is (mostly) avoided, by progressively accumulating
# options in "$@", and eventually passing that to Java.
#
# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
# see the in-line comments for details.
#
# There are tweaks for specific operating systems such as AIX, CygWin,
# Darwin, MinGW, and NonStop.
#
# (3) This script is generated from the Groovy template
# https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
# within the Gradle project.
#
# You can find Gradle at https://github.com/gradle/gradle/.
#
##############################################################################
# Attempt to set APP_HOME
# Resolve links: $0 may be a link
app_path=$0
# Need this for daisy-chained symlinks.
while
APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path
[ -h "$app_path" ]
do
ls=$( ls -ld "$app_path" )
link=${ls#*' -> '}
case $link in #(
/*) app_path=$link ;; #(
*) app_path=$APP_HOME$link ;;
esac
done
# This is normally unused
# shellcheck disable=SC2034
APP_BASE_NAME=${0##*/}
# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD=maximum
warn () {
echo "$*"
} >&2
die () {
echo
echo "$*"
echo
exit 1
} >&2
# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
nonstop=false
case "$( uname )" in #(
CYGWIN* ) cygwin=true ;; #(
Darwin* ) darwin=true ;; #(
MSYS* | MINGW* ) msys=true ;; #(
NONSTOP* ) nonstop=true ;;
esac
CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
# Determine the Java command to use to start the JVM.
if [ -n "$JAVA_HOME" ] ; then
if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
# IBM's JDK on AIX uses strange locations for the executables
JAVACMD=$JAVA_HOME/jre/sh/java
else
JAVACMD=$JAVA_HOME/bin/java
fi
if [ ! -x "$JAVACMD" ] ; then
die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
else
JAVACMD=java
if ! command -v java >/dev/null 2>&1
then
die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
fi
# Increase the maximum file descriptors if we can.
if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
case $MAX_FD in #(
max*)
# In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
# shellcheck disable=SC2039,SC3045
MAX_FD=$( ulimit -H -n ) ||
warn "Could not query maximum file descriptor limit"
esac
case $MAX_FD in #(
'' | soft) :;; #(
*)
# In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
# shellcheck disable=SC2039,SC3045
ulimit -n "$MAX_FD" ||
warn "Could not set maximum file descriptor limit to $MAX_FD"
esac
fi
# Collect all arguments for the java command, stacking in reverse order:
# * args from the command line
# * the main class name
# * -classpath
# * -D...appname settings
# * --module-path (only if needed)
# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
# For Cygwin or MSYS, switch paths to Windows format before running java
if "$cygwin" || "$msys" ; then
APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
JAVACMD=$( cygpath --unix "$JAVACMD" )
# Now convert the arguments - kludge to limit ourselves to /bin/sh
for arg do
if
case $arg in #(
-*) false ;; # don't mess with options #(
/?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath
[ -e "$t" ] ;; #(
*) false ;;
esac
then
arg=$( cygpath --path --ignore --mixed "$arg" )
fi
# Roll the args list around exactly as many times as the number of
# args, so each arg winds up back in the position where it started, but
# possibly modified.
#
# NB: a `for` loop captures its iteration list before it begins, so
# changing the positional parameters here affects neither the number of
# iterations, nor the values presented in `arg`.
shift # remove old arg
set -- "$@" "$arg" # push replacement arg
done
fi
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
# Collect all arguments for the java command:
# * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
# and any embedded shellness will be escaped.
# * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
# treated as '${Hostname}' itself on the command line.
set -- \
"-Dorg.gradle.appname=$APP_BASE_NAME" \
-classpath "$CLASSPATH" \
org.gradle.wrapper.GradleWrapperMain \
"$@"
# Stop when "xargs" is not available.
if ! command -v xargs >/dev/null 2>&1
then
die "xargs is not available"
fi
# Use "xargs" to parse quoted args.
#
# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
#
# In Bash we could simply go:
#
# readarray ARGS < <( xargs -n1 <<<"$var" ) &&
# set -- "${ARGS[@]}" "$@"
#
# but POSIX shell has neither arrays nor command substitution, so instead we
# post-process each arg (as a line of input to sed) to backslash-escape any
# character that might be a shell metacharacter, then use eval to reverse
# that process (while maintaining the separation between arguments), and wrap
# the whole thing up as a single "set" statement.
#
# This will of course break if any of these variables contains a newline or
# an unmatched quote.
#
eval "set -- $(
printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
xargs -n1 |
sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
tr '\n' ' '
)" '"$@"'
exec "$JAVACMD" "$@"

92
ncal/gradlew.bat vendored Normal file
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@ -0,0 +1,92 @@
@rem
@rem Copyright 2015 the original author or authors.
@rem
@rem Licensed under the Apache License, Version 2.0 (the "License");
@rem you may not use this file except in compliance with the License.
@rem You may obtain a copy of the License at
@rem
@rem https://www.apache.org/licenses/LICENSE-2.0
@rem
@rem Unless required by applicable law or agreed to in writing, software
@rem distributed under the License is distributed on an "AS IS" BASIS,
@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@rem See the License for the specific language governing permissions and
@rem limitations under the License.
@rem
@if "%DEBUG%"=="" @echo off
@rem ##########################################################################
@rem
@rem Gradle startup script for Windows
@rem
@rem ##########################################################################
@rem Set local scope for the variables with windows NT shell
if "%OS%"=="Windows_NT" setlocal
set DIRNAME=%~dp0
if "%DIRNAME%"=="" set DIRNAME=.
@rem This is normally unused
set APP_BASE_NAME=%~n0
set APP_HOME=%DIRNAME%
@rem Resolve any "." and ".." in APP_HOME to make it shorter.
for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
@rem Find java.exe
if defined JAVA_HOME goto findJavaFromJavaHome
set JAVA_EXE=java.exe
%JAVA_EXE% -version >NUL 2>&1
if %ERRORLEVEL% equ 0 goto execute
echo. 1>&2
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
echo. 1>&2
echo Please set the JAVA_HOME variable in your environment to match the 1>&2
echo location of your Java installation. 1>&2
goto fail
:findJavaFromJavaHome
set JAVA_HOME=%JAVA_HOME:"=%
set JAVA_EXE=%JAVA_HOME%/bin/java.exe
if exist "%JAVA_EXE%" goto execute
echo. 1>&2
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
echo. 1>&2
echo Please set the JAVA_HOME variable in your environment to match the 1>&2
echo location of your Java installation. 1>&2
goto fail
:execute
@rem Setup the command line
set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
@rem Execute Gradle
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
:end
@rem End local scope for the variables with windows NT shell
if %ERRORLEVEL% equ 0 goto mainEnd
:fail
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
rem the _cmd.exe /c_ return code!
set EXIT_CODE=%ERRORLEVEL%
if %EXIT_CODE% equ 0 set EXIT_CODE=1
if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
exit /b %EXIT_CODE%
:mainEnd
if "%OS%"=="Windows_NT" endlocal
:omega

17
ncal/settings.gradle.kts Normal file
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pluginManagement {
repositories {
google()
mavenCentral()
gradlePluginPortal()
}
}
dependencyResolutionManagement {
repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
repositories {
google()
mavenCentral()
}
}
rootProject.name = "NCal"
include(":app")