# Release .apk that installs directly on Android (no store account needed).
# Signed with the debug key from the Expo template, so it is for sideloading, not Google Play.
# Run it from the Actions tab ("Run workflow"), or push a tag like v1.0.0.
name: Android APK

on:
  workflow_dispatch:
  push:
    tags: ['v*']

permissions:
  contents: write

jobs:
  apk:
    runs-on: ubuntu-latest
    timeout-minutes: 60
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-java@v4
        with:
          distribution: zulu
          java-version: 17

      - uses: actions/setup-node@v4
        with:
          node-version: 22
          cache: npm

      - run: npm ci

      # android/ is generated from app.json and config plugins (Continuous Native Generation)
      - name: Generate the native project
        run: npx expo prebuild --platform android --clean

      - uses: gradle/actions/setup-gradle@v4

      - name: Build the release APK
        working-directory: android
        run: ./gradlew assembleRelease --no-daemon

      - name: Name the APK
        run: |
          VERSION=$(node -p "require('./app.json').expo.version")
          cp android/app/build/outputs/apk/release/app-release.apk "AIUsage-$VERSION.apk"
          echo "APK=AIUsage-$VERSION.apk" >> "$GITHUB_ENV"
          ls -lh AIUsage-*.apk

      - uses: actions/upload-artifact@v4
        with:
          name: AIUsage-android-apk
          path: ${{ env.APK }}
          retention-days: 30

      # a v* tag publishes a GitHub Release; the iOS workflow attaches its .ipa to the same one
      # release notes = this version's changelog (.github/changes/<tag>.md) + the install guide
      - name: Compose release notes
        if: startsWith(github.ref, 'refs/tags/v')
        run: |
          {
            if [ -f ".github/changes/${GITHUB_REF_NAME}.md" ]; then
              cat ".github/changes/${GITHUB_REF_NAME}.md"
              echo
            fi
            cat .github/release-notes.md
          } > "$RUNNER_TEMP/release-notes.md"

      - name: Attach to the GitHub Release
        if: startsWith(github.ref, 'refs/tags/v')
        uses: softprops/action-gh-release@v2
        with:
          name: AI Usage ${{ github.ref_name }}
          body_path: ${{ runner.temp }}/release-notes.md
          files: ${{ env.APK }}