main.yml

name: Build and create release on merged PR to master
on:
  workflow_dispatch:

  pull_request:
    types: [closed]
    branches:
      - master

jobs:
  gradle:
    if: github.event.pull_request.merged == true || github.event_name == 'workflow_dispatch'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3

      - uses: actions/setup-java@v3
        with:
          distribution: temurin
          java-version: 11

      - name: Setup Gradle
        uses: gradle/gradle-build-action@v2

      - name: Get version name
        run: echo "VERSION_INFORMATION=$(${{github.workspace}}/gradlew -q --no-configuration-cache printVersionName)" >> $GITHUB_ENV

      - name: Execute Gradle build
        run: ./gradlew assembleDebug

      - name: Upload APK
        uses: actions/upload-artifact@v3
        with:
          name: apk
          path: app/build/outputs/apk/debug/app-debug.apk

      - name: Check for new app version
        run: |
          TAGS=$(git tag -l)
          if echo "$TAGS" | grep -q "${{ env.VERSION_INFORMATION }}"; then
            echo "This is not a new version! Exiting..."
            exit 1
          else            
            echo "New version!"
          fi

      - name: Create tag
        id: create_tag
        run: |
          tag=${{ env.VERSION_INFORMATION }}
          echo "::set-output name=tag::$tag"

      - name: Create Draft Release
        id: create_release
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          tag_name: ${{ steps.create_tag.outputs.tag }}
          release_name: ${{ steps.create_tag.outputs.tag }}
          draft: true
          prerelease: false

      - uses: actions/upload-release-asset@v1.0.1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          upload_url: ${{ steps.create_release.outputs.upload_url }}
          asset_path: app/build/outputs/apk/debug/app-debug.apk
          asset_name: app-debug.apk
          asset_content_type: application/apk

      - uses: eregon/publish-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          release_id: ${{ steps.create_release.outputs.id }}