name: Build and smoke

on: [push, pull_request]

permissions:
  contents: read

jobs:
  changes:
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.targets.outputs.matrix }}
      any: ${{ steps.targets.outputs.any }}
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: Check release workflow safeguards
        run: python3 scripts/test_release_workflow.py -v
      - id: targets
        env:
          BASE: ${{ github.event.pull_request.base.sha || github.event.before }}
        run: |
          base="$BASE"
          if [ -z "$base" ] || ! git cat-file -e "$base^{commit}" 2>/dev/null; then
            base=$(git rev-parse HEAD^)
          fi
          matrix=$(python3 scripts/changed_targets.py --base "$base")
          echo "matrix=$matrix" >> "$GITHUB_OUTPUT"
          if [ "$matrix" = '{"include":[]}' ]; then
            echo "any=false" >> "$GITHUB_OUTPUT"
          else
            echo "any=true" >> "$GITHUB_OUTPUT"
          fi
  build:
    needs: changes
    if: needs.changes.outputs.any == 'true'
    runs-on: ubuntu-latest
    timeout-minutes: 20
    strategy:
      fail-fast: false
      max-parallel: 1
      matrix: ${{ fromJSON(needs.changes.outputs.matrix) }}
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          fetch-tags: true
      - uses: actions/setup-java@v4
        with:
          java-version: ${{ matrix.java }}
          distribution: temurin
      - uses: gradle/actions/setup-gradle@v4
      - name: Build Minecraft target
        run: ./gradlew ${{ matrix.gradle_args }} --console=plain
      - name: Disposable dedicated-server smoke
        run: python3 scripts/smoke_server.py --target ${{ matrix.target }}
      - name: Keep smoke logs
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: smoke-${{ matrix.target }}
          path: build/verification/${{ matrix.target }}/*.log
          if-no-files-found: ignore