name: Desktop CI — Headless Tests & Build

on:
  push:
    branches: [ main, master ]
  pull_request:
    branches: [ main, master ]

jobs:
  desktop-tests:
    name: Compose Desktop — Tests (headless) & Build
    runs-on: ubuntu-latest

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

      - name: Setup JDK 21 (Temurin)
        uses: actions/setup-java@v4
        with:
          distribution: temurin
          java-version: '21'

      - name: Gradle cache
        uses: actions/cache@v4
        with:
          path: |
            ~/.gradle/caches
            ~/.gradle/wrapper
            .gradle
          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties', 'gradle.properties') }}
          restore-keys: |
            ${{ runner.os }}-gradle-

      - name: Make gradlew executable
        run: chmod +x ./gradlew

      - name: Show Gradle version
        run: ./gradlew --version

      - name: Run Desktop tests headless (Xvfb)
        env:
          _JAVA_OPTIONS: -Djava.awt.headless=true
        run: |
          sudo apt-get update -y
          sudo apt-get install -y Xvfb
          xvfb-run --auto-servernum --server-args="-screen 0 1920x1080x24" \
            ./gradlew :frontend:shells:meldestelle-desktop:jvmTest --stacktrace --no-daemon

      - name: Build Desktop shell (Release)
        env:
          _JAVA_OPTIONS: -Djava.awt.headless=true
        run: |
          ./gradlew :frontend:shells:meldestelle-desktop:build --stacktrace --no-daemon

      - name: Upload build artifacts (Desktop shell)
        uses: actions/upload-artifact@v4
        with:
          name: desktop-shell-build
          path: |
            frontend/shells/meldestelle-desktop/build/libs/**/*.jar
            frontend/shells/meldestelle-desktop/build/compose*/**
          if-no-files-found: warn