feat: save age gate unlock state

Signed-off-by: Infi <infi@infi.sh>

app/src/main/java/chat/revolt/screens/chat/views/channel/ChannelScreen.kt

@@ -531,7 +531,9 @@ fun ChannelScreen(
             if (ageGateUnlocked == false) {
                 ChannelScreenAgeGate(
                     onAccept = {
-                        viewModel.ageGateUnlocked = true
+                        scope.launch {
+                            viewModel.unlockAgeGate()
+                        }
                     },
                     onDeny = {
                         onToggleDrawer()

app/src/main/java/chat/revolt/screens/chat/views/channel/ChannelScreenViewModel.kt

@@ -49,6 +49,7 @@ import chat.revolt.callbacks.UiCallback
 import chat.revolt.callbacks.UiCallbacks
 import chat.revolt.persistence.KVStorage
 import chat.revolt.screens.chat.ChatRouterDestination
+import chat.revolt.settings.providers.AgeGateUnlockedStorageProvider
 import dagger.hilt.android.lifecycle.HiltViewModel
 import io.ktor.http.ContentType
 import kotlinx.coroutines.Dispatchers
@@ -113,6 +114,11 @@ class ChannelScreenViewModel @Inject constructor(
         this.denyMessageFieldReasonResource = R.string.typing_blank
         this.editingMessage = null
         this.ageGateUnlocked = channel?.nsfw != true
+        viewModelScope.launch {
+            if (ageGateUnlocked != true) {
+                ageGateUnlocked = AgeGateUnlockedStorageProvider.getAgeGateUnlocked()
+            }
+        }
 
         viewModelScope.launch {
             draftContent = kvStorage.get("draftContent/$id") ?: ""
@@ -129,6 +135,11 @@ class ChannelScreenViewModel @Inject constructor(
         this.loadMessages(50)
     }
 
+    suspend fun unlockAgeGate() {
+        AgeGateUnlockedStorageProvider.setAgeGateUnlocked(true)
+        ageGateUnlocked = true
+    }
+
     private suspend fun ensureSelfHasMember() {
         channel?.server?.let { serverId ->
             RevoltAPI.selfId?.let { selfId ->

app/src/main/java/chat/revolt/settings/providers/AgeGateUnlockedStorageProvider.kt

@@ -0,0 +1,16 @@
+package chat.revolt.settings.providers
+
+import chat.revolt.RevoltApplication
+import chat.revolt.persistence.KVStorage
+
+object AgeGateUnlockedStorageProvider {
+    private val kv = KVStorage(RevoltApplication.instance)
+
+    suspend fun setAgeGateUnlocked(unlocked: Boolean) {
+        kv.set("ageGateUnlocked", unlocked)
+    }
+
+    suspend fun getAgeGateUnlocked(): Boolean {
+        return kv.getBoolean("ageGateUnlocked") ?: false
+    }
+}