name: Haskell CI
on:
  pull_request:
    branches:
      - dev
      - main
  push:
    branches:
      - main

jobs:
  build:
    runs-on: docker
    container:
      image: haskell:9.10
    steps:
      - name: Install Node.js (for actions)
        run: |
          curl -fsSL https://deb.nodesource.com/setup_22.x | bash -
          apt-get install -y nodejs
      - name: Checkout code
        uses: actions/checkout@v4
      - name: Check versions
        run: |
          ghc --version
          cabal --version
          node --version
      - name: Cache Cabal packages
        uses: actions/cache@v4
        with:
          path: |
            ~/.cabal/packages
            ~/.cabal/store
            dist-newstyle
          key: ${{ runner.os }}-haskell-9.10-cabal-${{ hashFiles('**/*.cabal', '**/cabal.project') }}
          restore-keys: |
            ${{ runner.os }}-haskell-9.10-cabal-
      - name: Update Cabal package index
        run: cabal update
      - name: Configure project
        run: cabal configure --enable-tests --enable-benchmarks
      - name: Build dependencies
        run: cabal build --only-dependencies --enable-tests --enable-benchmarks
      - name: Build project
        run: cabal build --enable-tests --enable-benchmarks
      - name: Run documentation build
        run: cabal haddock

  test:
    runs-on: docker
    container:
      image: haskell:9.10
    needs: build
    steps:
      - name: Install Node.js (for actions)
        run: |
          curl -fsSL https://deb.nodesource.com/setup_22.x | bash -
          apt-get install -y nodejs
      - name: Checkout code
        uses: actions/checkout@v4
      - name: Cache Cabal packages
        uses: actions/cache@v4
        with:
          path: |
            ~/.cabal/packages
            ~/.cabal/store
            dist-newstyle
          key: ${{ runner.os }}-haskell-9.10-cabal-${{ hashFiles('**/*.cabal', '**/cabal.project') }}
          restore-keys: |
            ${{ runner.os }}-haskell-9.10-cabal-
      - name: Update Cabal package index
        run: cabal update
      - name: Configure project
        run: cabal configure --enable-tests --enable-benchmarks
      - name: Build dependencies
        run: cabal build --only-dependencies --enable-tests --enable-benchmarks
      - name: Build project
        run: cabal build --enable-tests --enable-benchmarks
      - name: Run tests
        run: cabal test --test-show-details=direct

  fourmolu:
    runs-on: docker
    container:
      image: haskell:9.10
    steps:
      - name: Install Node.js (for actions)
        run: |
          curl -fsSL https://deb.nodesource.com/setup_22.x | bash -
          apt-get install -y nodejs
      - name: Checkout code
        uses: actions/checkout@v4
      - name: Install fourmolu
        run: cabal install fourmolu-0.18.0.0
      - name: Run fourmolu
        run: |
          find src test app -name "*.hs" -exec fourmolu --check-idempotence {} \; 2>/dev/null || true
          find src test app -name "*.hs" -exec fourmolu --mode check {} \;

  hlint:
    runs-on: docker
    container:
      image: haskell:9.10
    steps:
      - name: Install Node.js (for actions)
        run: |
          curl -fsSL https://deb.nodesource.com/setup_22.x | bash -
          apt-get install -y nodejs
      - name: Checkout code
        uses: actions/checkout@v4
      - name: Install hlint
        run: cabal install hlint-3.8
      - name: Run hlint
        run: |
          if [ -d src ]; then hlint src/; fi
          if [ -d test ]; then hlint test/; fi  
          if [ -d app ]; then hlint app/; fi