A pipeline for Android that builds and deploys the app using firebase app distribution

android-pipeline.yml

name: Pipeline

on:
  push:
    branches:
    - 'main'
    - 'development'
    - 'feature/*'
    - 'fix/*'
  pull_request:
    branches:
    - 'main'
    - 'development'

jobs:
  assemble:
    name: Assemble Debug
    runs-on: ubuntu-latest
    steps:
    - name: Checkout
      uses: actions/checkout@v4

    - name: Setup Java 17
      uses: actions/setup-java@v3
      with:
        java-version: '17.0.6'
        distribution: 'zulu'

    - name: Generate cache key
      run: ./scripts/checksum.sh . checksum.txt

    - name: Gradle cache
      uses: actions/cache@v3
      with:
        path: |
          ~/.gradle/caches/modules-*
          ~/.gradle/caches/jars-*
          ~/.gradle/caches/build-cache-*
          .gradle/*
        key: gradle-${{ hashFiles('checksum.txt') }}

    - name: Spotless check
      run: ./gradlew spotlessCheck --stacktrace

    - name: Assemble Debug
      run: ./gradlew assembleDebug

    - name: Cache APK
      uses: actions/cache/save@v3
      with:
        path: |
          app/build/*
        key: apk

  deploy:
    name: Firebase Deploy
    needs: assemble
    if: ${{ github.event_name == 'pull_request' }}
    runs-on: ubuntu-latest
    env:
      PR_NUMBER: ${{ github.event.number }}
    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          ref: ${{ github.event.pull_request.head.sha }}

      - name: Generate Notes
        run: | 
          echo "#$PR_NUMBER \n$(git show -s --format=%s)" > distribution/notes.txt

      - name: Setup Java 17
        uses: actions/setup-java@v3
        with:
          java-version: '17.0.6'
          distribution: 'zulu'

      - name: Generate cache key
        run: ./scripts/checksum.sh . checksum.txt

      - name: Recover Gradle cache
        uses: actions/cache/restore@v3
        with:
          key: gradle-${{ hashFiles('checksum.txt') }}

      - name: Recover APKs
        uses: actions/cache/restore@v3
        with:
          path: |
            app/build/*
          key: apk

      - name: Generate credentials
        run: echo ${{ secrets.GOOGLE_APPLICATION_CREDENTIALS }} | base64 --decode > distribution/credentials.json

      - name: Upload Debug App
        run: ./gradlew appDistributionUploadDebug --stacktrace