name: Automate Gradlew Build

on:
  workflow_dispatch:

permissions:
  contents: read

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Set up JDK 21
        uses: actions/setup-java@v4
        with:
          distribution: "temurin"
          java-version: "21"
          check-latest: true

      - name: Setup Gradle
        uses: gradle/gradle-build-action@v3

      - name: Read mod version
        id: get_version
        run: |
          VERSION=$(grep '^mod_version' gradle.properties | head -n 1 | cut -d'=' -f2 | xargs)
          echo "mod_version=${VERSION}" >> $GITHUB_OUTPUT

      - name: Grant execute permission for gradlew
        run: chmod +x gradlew

      - name: Build release JAR
        run: ./gradlew clean build -x test --no-daemon --stacktrace

      - name: Prepare release artifact
        run: |
          VERSION="${{ steps.get_version.outputs.mod_version }}"
          mkdir -p build/release
          # Source JAR should already be saturnclient-<version>.jar
          cp "build/libs/saturnclient-${VERSION}.jar" "build/release/saturnclient-${VERSION}.jar"

      - name: Upload build artifact
        uses: actions/upload-artifact@v4
        with:
          name: "saturnclient-${{ steps.get_version.outputs.mod_version }}"
          path: "build/release/saturnclient-${{ steps.get_version.outputs.mod_version }}.jar"
          if-no-files-found: error