android-build.yml

# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
#
# This source code is licensed under the BSD-style license found in the
# LICENSE file in the root directory of this source tree.

name: Android Build

on:
  pull_request:
  schedule:
    # Run nightly at midnight UTC
    - cron: '0 0 * * *'
  workflow_dispatch:
    inputs:
      local_aar:
        description: 'URL to download a local AAR file. When set, the workflow will download the AAR and use it instead of the Maven dependency.'
        required: false
        type: string

permissions:
  contents: write

jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        include:
          - name: LlamaDemo
            path: llm/android/LlamaDemo
          - name: DeepLabV3Demo
            path: dl3/android/DeepLabV3Demo
          - name: MV3Demo
            path: mv3/android/MV3Demo
          - name: YoloDemo
            path: Yolo/android
          - name: WhisperDemo
            path: whisper/android/WhisperApp
            require_aar: true
          - name: ParakeetDemo
            path: parakeet/android/ParakeetApp
            require_aar: true


    name: Build ${{ matrix.name }}
    steps:
      - name: Checkout repository
        if: ${{ !matrix.require_aar || inputs.local_aar }}
        uses: actions/checkout@v4

      - name: Set up JDK 17
        if: ${{ !matrix.require_aar || inputs.local_aar }}
        uses: actions/setup-java@v4
        with:
          java-version: '17'
          distribution: 'temurin'

      - name: Setup Gradle
        if: ${{ !matrix.require_aar || inputs.local_aar }}
        uses: gradle/actions/setup-gradle@v4

      - name: Download local AAR
        if: ${{ inputs.local_aar && (matrix.name == 'LlamaDemo' || matrix.name == 'YoloDemo' || matrix.name == 'WhisperDemo' || matrix.name == 'ParakeetDemo') }}
        run: |
          mkdir -p ${{ matrix.path }}/app/libs
          curl -fL -o ${{ matrix.path }}/app/libs/executorch.aar "${{ inputs.local_aar }}"

      - name: Build with Gradle
        if: ${{ !matrix.require_aar || inputs.local_aar }}
        working-directory: ${{ matrix.path }}
        run: |
          if [ -n "${{ inputs.local_aar }}" ] && ([ "${{ matrix.name }}" == "LlamaDemo" ] || [ "${{ matrix.name }}" == "YoloDemo" ] || [ "${{ matrix.name }}" == "WhisperDemo" ] || [ "${{ matrix.name }}" == "ParakeetDemo" ]); then
            ./gradlew build --no-daemon -PuseLocalAar=true
          else
            ./gradlew build --no-daemon
          fi

      - name: Rename APKs with demo name
        if: ${{ !matrix.require_aar || inputs.local_aar }}
        working-directory: ${{ matrix.path }}/app/build/outputs/apk/
        run: |
          find . -name "*.apk" -type f -print0 | while IFS= read -r -d '' apk; do
            dir=$(dirname "$apk")
            filename=$(basename "$apk")
            new_name=$(echo "$filename" | sed "s/\.apk$/-${{ matrix.name }}.apk/")
            echo "Renaming $apk to $dir/$new_name"
            mv "$apk" "$dir/$new_name"
          done

      - name: Upload build artifacts
        if: ${{ !matrix.require_aar || inputs.local_aar }}
        uses: actions/upload-artifact@v4
        with:
          name: ${{ matrix.name }}-apk
          path: ${{ matrix.path }}/app/build/outputs/apk/
          if-no-files-found: warn

  create-release:
    name: Create Nightly Release
    needs: build
    runs-on: ubuntu-latest
    if: github.event_name == 'schedule'
    steps:
      - name: Download all artifacts
        uses: actions/download-artifact@v4.1.3
        with:
          path: artifacts

      - name: Generate release tag
        id: tag
        run: |
          echo "tag_name=nightly-$(date +'%Y%m%d')" >> $GITHUB_OUTPUT
          echo "release_name=Nightly Build $(date +'%Y-%m-%d')" >> $GITHUB_OUTPUT
          echo "build_date=$(date +'%Y-%m-%d %H:%M:%S UTC')" >> $GITHUB_OUTPUT

      - name: Create Release
        uses: softprops/action-gh-release@v1
        with:
          tag_name: ${{ steps.tag.outputs.tag_name }}
          name: ${{ steps.tag.outputs.release_name }}
          body: |
            Automated nightly build of Android demo applications.

            ## Apps included:
            - LlamaDemo APKs (`app-debug-LlamaDemo.apk`, `app-release-unsigned-LlamaDemo.apk`)
            - DeepLabV3Demo APKs (`app-debug-DeepLabV3Demo.apk`, `app-release-unsigned-DeepLabV3Demo.apk`)
            - MV3Demo APKs (`app-debug-MV3Demo.apk`, `app-release-unsigned-MV3Demo.apk`)
            - YoloDemo APKs (`app-debug-YoloDemo.apk`, `app-release-unsigned-YoloDemo.apk`)

            **Build Date:** ${{ steps.tag.outputs.build_date }}
            **Commit:** ${{ github.sha }}
          files: |
            artifacts/*-apk/**/*.apk
          prerelease: true
          draft: false

      - name: Clean up old nightly releases
        uses: actions/github-script@v7
        with:
          script: |
            const keep = 7; // Keep last 7 nightly releases
            const owner = context.repo.owner;
            const repo = context.repo.repo;

            // Get all releases
            const releases = await github.rest.repos.listReleases({
              owner,
              repo,
              per_page: 100
            });

            // Filter nightly releases and sort by date (newest first)
            const nightlyReleases = releases.data
              .filter(release => release.tag_name.startsWith('nightly-'))
              .sort((a, b) => new Date(b.created_at) - new Date(a.created_at));

            // Delete releases older than the keep threshold
            for (let i = keep; i < nightlyReleases.length; i++) {
              const release = nightlyReleases[i];
              console.log(`Deleting old nightly release: ${release.tag_name}`);

              try {
                // Delete the release
                await github.rest.repos.deleteRelease({
                  owner,
                  repo,
                  release_id: release.id
                });

                // Delete the tag
                await github.rest.git.deleteRef({
                  owner,
                  repo,
                  ref: `tags/${release.tag_name}`
                });

                console.log(`Deleted release and tag: ${release.tag_name}`);
              } catch (error) {
                console.log(`Error deleting ${release.tag_name}: ${error.message}`);
              }
            }