name: Build and Release JAR

on:
  push:
    branches:
      - '**'
    paths-ignore:
      - 'README.md'

jobs:
  build-and-release:
    runs-on: ubuntu-latest

    permissions:
      contents: write

    steps:
      - name: Checkout source code
        uses: actions/checkout@v4

      - name: Get Java version from pom.xml or fallback to 21
        id: java
        run: |
          echo "Attempting to extract Java version from pom.xml..."
          version=$(mvn help:evaluate -Dexpression=maven.compiler.source -q -DforceStdout)
          if [[ -z "$version" || "$version" == *"[INFO]"* || "$version" == *"BUILD FAILURE"* ]]; then
            version=$(mvn help:evaluate -Dexpression=java.version -q -DforceStdout)
          fi
          if [[ "$version" == "1.8" ]]; then
            version="8"
          fi
          if [[ -z "$version" || "$version" == *"[INFO]"* || "$version" == *"BUILD FAILURE"* ]]; then
            version="21"
            echo "Falling back to Java version $version"
          fi
          echo "java=$version" >> $GITHUB_OUTPUT

      - name: Set up JDK
        uses: actions/setup-java@v4
        with:
          java-version: ${{ steps.java.outputs.java }}
          distribution: 'temurin'

      - name: Build with Maven
        run: mvn package -DskipTests

      - name: Get version from pom.xml
        id: get_version
        run: |
          version=$(mvn help:evaluate -Dexpression=project.version -q -DforceStdout)
          echo "version=$version" >> $GITHUB_OUTPUT

      - name: Create GitHub Release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: v${{ steps.get_version.outputs.version }}
          name: Release v${{ steps.get_version.outputs.version }}
          generate_release_notes: true

      - name: Upload JAR to release
        uses: softprops/action-gh-release@v2
        with:
          files: target/*.jar