#!/usr/bin/env bash

# This setup script should do the minimum work required to download the release package, unzip it, and kick off the
# setup script contained within.

# exit when any command fails
set -e

if [ "$(id -u)" == "0" ]; then
   echo "This script must not be run as root" 1>&2
   exit 1
fi

check_command() {
    if ! command -v "$1" &>/dev/null; then
        echo "Please install \"$1\" and make sure it's available in your \$PATH, then rerun the setup."
        exit 1
    fi
}

check_command "curl"

print_missing_dependencies() {
  echo ""
  printf "\n\033[1;31mMissing required components\033[0m\n"
  echo ""
  echo "Install the corresponding packages with your package manager, then rerun this setup:"
  echo "  Debian/Ubuntu: sudo apt-get update && sudo apt-get install -y extra-cmake-modules kwin-dev libkf6config-dev libkf6configwidgets-dev libkf6coreaddons-dev libkf6kcmutils-dev libkf6globalaccel-dev libkf6i18n-dev libkf6windowsystem-dev libkf6xmlgui-dev qt6-base-dev qt6-declarative-dev"
  echo "  Fedora/RHEL:   sudo dnf install -y extra-cmake-modules kwin-devel kf6-kconfig-devel kf6-kconfigwidgets-devel kf6-kcoreaddons-devel kf6-kcmutils-devel kf6-kglobalaccel-devel kf6-ki18n-devel kf6-kwindowsystem-devel kf6-kxmlgui-devel qt6-qtbase-devel qt6-qttools-devel wayland-devel libepoxy-devel"
  echo "  Arch:          sudo pacman -S --needed extra-cmake-modules qt6-base qt6-declarative qt6-tools kconfig kconfigwidgets kcoreaddons kglobalaccel ki18n kcmutils kxmlgui kwindowsystem kwin"
  echo ""
  printf "\n\033[1;33mIf you continue to see this issue\033[0m rerun as follows and attach the full output to a bug report:\n"
  printf "\n\tPRINT_FULL_STDERR=1 %s\n" "$0 $*"
  exit 1
}

ARCH=$(uname -m)
if [ -f /etc/os-release ]; then
  . /etc/os-release
  if [ "$ID" == "steamos" ]; then
    ARCH="steamos"
  fi
fi
FILE_NAME="breezyKWin-$ARCH.tar.gz"
LATEST_RELEASE=$(curl -s "https://api.github.com/repos/wheaney/breezy-desktop/releases/latest")
echo "Performing setup for KWin ($ARCH)"

start_dir=$(pwd)

# create temp directory
tmp_dir=$(mktemp -d -t breezy-kwin-XXXXXXXXXX)
pushd $tmp_dir > /dev/null
echo "Created temp directory: ${tmp_dir}"

binary_download_url="https://github.com/wheaney/breezy-desktop/releases/latest/download/$FILE_NAME"
if [ "$1" = "-v" ]
then
  metrics_version="$2"
  binary_path_arg="$3"
elif [ "$1" = "--tag" ] && [ -n "$2" ]
then
  binary_download_url="https://github.com/wheaney/breezy-desktop/releases/download/$2/$FILE_NAME"
else
  binary_path_arg="$1"
fi

if [ -z "$binary_path_arg" ]
then
  http_code=$(curl -s -o /dev/null -w "%{http_code}" -L "$binary_download_url" || echo "000")

  if [[ "$http_code" =~ ^(2|3) ]]; then
    echo "Downloading to: ${tmp_dir}/$FILE_NAME"
    curl -L "$binary_download_url" -o "$FILE_NAME"
  else
    check_command "git"
    check_command "cmake"
    check_command "make"

    # handle -v / --tag like the rest of the script
    if [ "$1" = "--tag" ] && [ -n "$2" ]; then
      requested_tag="$2"
    fi

    # resolve tag: prefer requested_tag, then LATEST_RELEASE if already fetched, else query GitHub API
    if [ -n "$requested_tag" ]; then
      tag="$requested_tag"
    else
      tag=$(curl -s "https://api.github.com/repos/wheaney/breezy-desktop/releases/latest" \
            | grep -m1 '"tag_name":' \
            | sed -E 's/.*"tag_name":[[:space:]]*"([^"]+)".*/\1/')
    fi

    if [ -z "$tag" ]; then
      echo "Failed to determine latest tag for wheaney/breezy-desktop" 1>&2
      exit 1
    fi

    if [ -z "${DEV_BUILD+x}" ]; then
      echo "Cloning wheaney/breezy-desktop (tag: ${tag})"
      if git clone --depth 1 --branch "$tag" "https://github.com/wheaney/breezy-desktop.git" breezy-desktop 2>/dev/null; then
        pushd breezy-desktop > /dev/null
      else
        git clone "https://github.com/wheaney/breezy-desktop.git" breezy-desktop
        pushd breezy-desktop > /dev/null
        git checkout "$tag"
      fi

      echo "Downloading git submodules"
      git submodule sync --recursive || true
      git submodule update --init modules/XRLinuxDriver
      git submodule update --init ui/modules/PyXRLinuxDriverIPC
    else
      pushd $start_dir > /dev/null
    fi

    echo "Building Breezy Desktop from source, this may take a while..."
    set +e
    pkgkwin_stderr=$(LOCAL_BUILD_SYSTEM=1 bin/package_kwin --download-driver 2>&1)
    pkgkwin_rc=$?
    set -e
    if [ "$pkgkwin_rc" -ne 0 ]; then
      if echo "$pkgkwin_stderr" | grep -qi "could not find" && [ -z "${PRINT_FULL_STDERR+x}" ]; then
        print_missing_dependencies "$*"
      else
        echo "$pkgkwin_stderr"
      fi
      echo "Error: Breezy Desktop build failed with exit code $pkgkwin_rc"
      exit $pkgkwin_rc
    fi
    FILE_NAME="breezyKWin-$ARCH.tar.gz"
    cp "out/$FILE_NAME" "$tmp_dir"
    popd > /dev/null
  fi
else
  FILE_NAME=$(basename $binary_path_arg)
  if [[ "$binary_path_arg" = /* ]]; then
    abs_path="$binary_path_arg"
  else
    # Convert relative path to absolute path
    abs_path=$(realpath "$start_dir/$binary_path_arg")
  fi
  cp $abs_path $tmp_dir
fi

echo "Extracting to: ${tmp_dir}/breezy_kwin"
tar -xf $FILE_NAME

pushd breezy_kwin > /dev/null

# run the setup script that comes with this release
bin/setup $metrics_version

echo "Deleting temp directory: ${tmp_dir}"
rm -rf $tmp_dir
cd "$(dirs -l -0)" && dirs -c