name: Java CI with Maven and Release

on:
  push:
    branches: [ "main" ]
  pull_request:
    branches: [ "main" ]

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v3
    
    - name: Set up JDK 17
      uses: actions/setup-java@v3
      with:
        java-version: '17'
        distribution: 'temurin'
        cache: maven

    - name: Build with Maven
      run: mvn -B package --file pom.xml

  create_release:
    needs: build
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - uses: actions/checkout@v3
      - name: Generate tag
        id: tag
        run: echo "::set-output name=tag::$(date +'%Y%m%d%H%M%S')"
      - name: Create Release
        id: create_release
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          tag_name: ${{ steps.tag.outputs.tag }}
          release_name: Release ${{ steps.tag.outputs.tag }}
          draft: false
          prerelease: false
      - name: Find Jar files
        id: find_jars
        run: |
          jars=$(find target -name '*.jar')
          echo "::set-output name=jars::$jars"
      - name: Upload Jar as Release Asset
        id: upload-release-asset
        uses: actions/upload-release-asset@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          upload_url: ${{ steps.create_release.outputs.upload_url }}
          asset_path: ${{ steps.find_jars.outputs.jars }}
          asset_name: my-java-app.jar
          asset_content_type: application/java-archive