name: Build Android APK

# Builds the debug APK in the cloud — no local Android Studio / SDK needed.
# Download the APK from the run's "Artifacts" once it finishes.
on:
  push:
    paths:
      - "android/**"
      - ".github/workflows/android.yml"
  workflow_dispatch: {}

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

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

      - name: Set up Gradle
        uses: gradle/actions/setup-gradle@v3

      - name: Download MediaPipe model into assets
        run: bash fetch_model.sh
        working-directory: android

      - name: Build debug APK
        run: ./gradlew assembleDebug --no-daemon --stacktrace
        working-directory: android

      - name: Upload APK
        uses: actions/upload-artifact@v4
        with:
          name: lsf-interpreter-debug-apk
          path: android/app/build/outputs/apk/debug/app-debug.apk
          if-no-files-found: error