ci.yml

on:
  workflow_dispatch:
  pull_request:
  push:
    branches:
      - master
  schedule:
    - cron: '23 14 * * 2'
  release:

name: build

jobs:
  lint:
    name: "Run hlint"
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4

    - name: Set up HLint
      uses: haskell/actions/hlint-setup@v2

    - name: Run HLint
      uses: haskell/actions/hlint-run@v2
      with:
        fail-on: warning

  fourmolu:
    name: "Run fourmolu"
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
    - uses: haskell-actions/run-fourmolu@v10
      with:
        version: "0.11.0.0"

  generateMatrix:
    name: "Generate matrix from cabal"
    outputs:
      matrix: ${{ steps.set-matrix.outputs.matrix }}
    runs-on: ubuntu-latest
    steps:
      - uses: kleidukos/get-tested@v0.1.6.0
        id: set-matrix
        with:
          cabal-file: "rhine/rhine.cabal"
          ubuntu: true
          version: 0.1.6.0

  build-cabal:
    runs-on: ubuntu-latest
    needs: generateMatrix
    strategy:
      matrix: ${{ fromJSON(needs.generateMatrix.outputs.matrix) }}
    name: Haskell GHC ${{ matrix.ghc }} cabal
    steps:
      - uses: actions/checkout@v4
      - uses: haskell-actions/setup@v2
        id: setup
        with:
          ghc-version: ${{ matrix.ghc }}
      - name: Install system dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y libgl1-mesa-dev libglu1-mesa-dev freeglut3-dev

      - name: Configure the build
        run: |
          cabal configure --enable-tests --enable-benchmarks --disable-documentation
          cabal build all --dry-run
        # The last step generates dist-newstyle/cache/plan.json for the cache key.

      - name: Restore cached dependencies
        uses: actions/cache/restore@v4
        id: cache
        env:
          key: ${{ runner.os }}-ghc-${{ steps.setup.outputs.ghc-version }}-cabal-${{ steps.setup.outputs.cabal-version }}
        with:
          path: ${{ steps.setup.outputs.cabal-store }}
          key: ${{ env.key }}-plan-${{ hashFiles('**/plan.json') }}
          restore-keys: ${{ env.key }}-

      - name: Install dependencies
        # If we had an exact cache hit, the dependencies will be up to date.
        if: steps.cache.outputs.cache-hit != 'true'
        run: cabal build all --enable-tests --only-dependencies

      # Cache dependencies already here, so that we do not have to rebuild them should the subsequent steps fail.
      - name: Save cached dependencies
        uses: actions/cache/save@v4
        # If we had an exact cache hit, trying to save the cache would error because of key clash.
        if: steps.cache.outputs.cache-hit != 'true'
        with:
          path: ${{ steps.setup.outputs.cabal-store }}
          key: ${{ steps.cache.outputs.cache-primary-key }}

      - name: Cabal build packages
        run: cabal build all --enable-tests -fdev
      - name: Cabal test
        run: cabal test all --enable-tests --test-show-details=Always

  build-stack:
    runs-on: ubuntu-latest
    needs: generateMatrix
    strategy:
      matrix: ${{ fromJSON(needs.generateMatrix.outputs.matrix) }}
    name: Haskell GHC ${{ matrix.ghc }} stack
    steps:
      - uses: actions/checkout@v4
      - name: Install dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y libgl1-mesa-dev libglu1-mesa-dev freeglut3-dev
      - name: Cache stack build artifacts
        uses:  freckle/stack-cache-action@v2
        with:
          stack-yaml: stack.${{ matrix.ghc }}.yaml
      - name: Stack build and test
        run: |
          stack build --system-ghc --test --stack-yaml stack.${{ matrix.ghc }}.yaml

  build-flake:
    name: Nix Flake
    strategy:
      matrix:
        os:
          - ubuntu-latest
          - macos-latest
    runs-on: ${{ matrix.os }}
    steps:
      - uses: actions/checkout@v4
      - uses: cachix/install-nix-action@v25
      - name: Build all packages
        run: nix build
      - name: Run tests
        run: nix develop -c cabal test all
      # nix flake check breaks on IFD in multi-platform flake https://github.com/NixOS/nix/issues/4265
      # - run: nix flake check

  cabal-check:
    name: Check and format all cabal files
    runs-on:
      - ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: tfausak/cabal-gild-setup-action@v2
        with:
          version: 1.0.2.4
      - run: ./cabal_check.sh

  success:
    name: Successfully build and test on all systems
    needs:
      - build-cabal
      - build-flake
      - build-stack
    runs-on:
      - ubuntu-latest
    steps:
      - run: echo "Success"