name: Build Android APK

on:
  push:
    branches: [main]
    paths:
      - "android/**"
      - "client/**"
      - ".gitea/workflows/build-apk.yml"
  pull_request:
    branches: [main]
    paths:
      - "android/**"
      - "client/**"
      - ".gitea/workflows/build-apk.yml"
  workflow_dispatch:

jobs:
  build:
    runs-on: ubuntu-latest

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

      - name: Set up JDK 17
        uses: actions/setup-java@v4
        with:
          java-version: "17"
          distribution: "temurin"

      - name: Sync client assets
        run: |
          cp client/index.html android/app/src/main/assets/index.html
          cp client/style.css android/app/src/main/assets/style.css
          cp client/app.js android/app/src/main/assets/app.js

      - name: Setup Android SDK
        uses: android-actions/setup-android@v3
        with:
          cmdline-tools-version: 11076708
          platforms: "platform-34"
          build-tools: "34.0.0"

      - name: Build APK (debug)
        working-directory: android
        run: |
          chmod +x gradlew || true
          ./gradlew assembleDebug
        env:
          GRADLE_OPTS: "-Dorg.gradle.daemon=false"

      - name: Upload debug APK
        uses: actions/upload-artifact@v3
        with:
          name: PaperDash-debug.apk
          path: android/app/build/outputs/apk/debug/app-debug.apk
          if-no-files-found: error

      - name: Update Rolling Draft Release
        uses: softprops/action-gh-release@v1
        with:
          draft: true
          tag_name: android-rolling-draft
          name: "Draft (latest Android build)"
          body: |
            Latest PaperDash Android APK build from commit ${{ gitea.sha }}.
            Edit tag, name, and notes before publishing.
          files: android/app/build/outputs/apk/debug/app-debug.apk
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}   # auto-provided in Gitea Actions