name: Build Android APK

on:
  push:
    tags:
      - "v*"

jobs:
  build-apk:
    runs-on: ubuntu-latest

    env:
      BASE_URL: ${{ secrets.BASE_URL }}
      GOOGLE_SERVER_CLIENT_ID: ${{ secrets.GOOGLE_SERVER_CLIENT_ID }}
      GOOGLE_CLIENT_ID: ${{ secrets.GOOGLE_CLIENT_ID }}
      TOKEN: ${{ secrets.TOKEN }}

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Java
        uses: actions/setup-java@v4
        with:
          distribution: temurin
          java-version: "17"

      - name: Setup Flutter
        uses: subosito/flutter-action@v2
        with:
          channel: stable

      - name: Setup Android SDK
        uses: android-actions/setup-android@v3

      - name: Install Android SDK packages
        run: |
          sdkmanager "platform-tools" "platforms;android-35" "build-tools;35.0.0"

          set +e
          yes | sdkmanager --licenses >/dev/null 2>&1
          LICENSE_EXIT=$?
          set -e

          if [ "$LICENSE_EXIT" -ne 0 ] && [ "$LICENSE_EXIT" -ne 141 ]; then
            echo "sdkmanager --licenses failed with exit code $LICENSE_EXIT"
            exit "$LICENSE_EXIT"
          fi

      - name: Show Flutter and Dart version
        run: |
          flutter --version
          flutter doctor -v

      - name: Install dependencies
        run: flutter pub get

      - name: Install release tooling
        run: sudo apt-get update && sudo apt-get install -y jq

      - name: Build release APK
        run: |
          BASE_URL_VALUE="${BASE_URL:-http://127.0.0.1:8000}"

          FLUTTER_CMD=(
            flutter build apk --release
            --dart-define=BASE_URL=${BASE_URL_VALUE}
          )

          if [ -n "${GOOGLE_SERVER_CLIENT_ID}" ]; then
            FLUTTER_CMD+=(--dart-define=GOOGLE_SERVER_CLIENT_ID=${GOOGLE_SERVER_CLIENT_ID})
          fi

          if [ -n "${GOOGLE_CLIENT_ID}" ]; then
            FLUTTER_CMD+=(--dart-define=GOOGLE_CLIENT_ID=${GOOGLE_CLIENT_ID})
          fi

          "${FLUTTER_CMD[@]}"

      - name: Create or update Gitea release and upload APK
        run: |
          if [ -z "${TOKEN}" ]; then
            echo "Missing required secret: TOKEN"
            exit 1
          fi

          APK_PATH="build/app/outputs/flutter-apk/app-release.apk"
          if [ ! -f "$APK_PATH" ]; then
            echo "APK not found at $APK_PATH"
            exit 1
          fi

          OWNER_REPO="${GITHUB_REPOSITORY}"
          OWNER="${OWNER_REPO%%/*}"
          REPO="${OWNER_REPO##*/}"
          TAG="${GITHUB_REF_NAME}"
          API_BASE="${GITHUB_SERVER_URL}/api/v1"

          RELEASE_JSON=$(curl -sS -X POST \
            -H "Authorization: token ${TOKEN}" \
            -H "Content-Type: application/json" \
            "${API_BASE}/repos/${OWNER}/${REPO}/releases" \
            -d "{\"tag_name\":\"${TAG}\",\"name\":\"${TAG}\",\"draft\":false,\"prerelease\":false}" \
            || true)

          RELEASE_ID=$(echo "$RELEASE_JSON" | jq -r '.id // empty')

          if [ -z "$RELEASE_ID" ]; then
            # Fallback: release may already exist for the tag
            RELEASE_JSON=$(curl -sS \
              -H "Authorization: token ${TOKEN}" \
              "${API_BASE}/repos/${OWNER}/${REPO}/releases/tags/${TAG}")
            RELEASE_ID=$(echo "$RELEASE_JSON" | jq -r '.id // empty')
          fi

          if [ -z "$RELEASE_ID" ]; then
            echo "Could not resolve release ID for tag ${TAG}"
            echo "$RELEASE_JSON"
            exit 1
          fi

          curl -sS -X POST \
            -H "Authorization: token ${TOKEN}" \
            -F "attachment=@${APK_PATH}" \
            "${API_BASE}/repos/${OWNER}/${REPO}/releases/${RELEASE_ID}/assets?name=reader-app-${TAG}.apk"