validate.yml

name: code validation

on:
  push:
    branches: [ "main", "dev" ]
  pull_request:
    branches: [ "main", "dev" ]

permissions:
  contents: read

jobs:
  build-and-test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: freckle/stack-action@v5
        with:
          stack-build-arguments: ""

  lint:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - id: changed-files
        uses: tj-actions/changed-files@v45
        with:
          files: "**/*.hs"
      - uses: haskell-actions/hlint-setup@v2
      - if: steps.changed-files.outputs.all_changed_and_modified_files
        uses: haskell-actions/hlint-run@v2
        with:
          path: ${{ toJSON(steps.changed-files.all_changed_and_modified_files) }}

  formatting:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - id: changed-files
        uses: tj-actions/changed-files@v45
        with:
          files: "**/*.hs"
      - if: steps.changed-files.outputs.all_changed_and_modified_files
        env:
          TARGETS: ${{ steps.changed-files.outputs.all_changed_and_modified_files }}
        run: |
          curl -sL https://raw.github.com/haskell/stylish-haskell/master/scripts/latest.sh | sh -s .
          stylish-haskell -i $TARGETS
          for f in $(git diff --name-only --diff-filter=M); do
            echo "::error file=$f::File is not formatted properly."
          done