server-format.yml

name: server format
on:
  label:
  pull_request:
    paths:
      - 'server/**'

jobs:
  stylish-haskell:
    runs-on: ubuntu-latest
    if: "!contains(github.event.pull_request.labels.*.name, 'ignore-server-format-checks') && github.event.label.name != 'ignore-server-format-checks'"
    steps:
      - uses: actions/checkout@v2
        with:
          fetch-depth: 0
      - name: Run stylish-haskell
        shell: bash
        run: |
          if git show -q --pretty=format:"%s" | grep -q "\[no-format\]"; then
            echo "Found [no-format], skipping."
          else
            CHANGED_HS_FILES=$(git diff --name-only origin/${{github.base_ref}}...${{github.sha}} -- "./server/*.hs" | xargs -i -d '\n' sh -c 'ls -d {} 2>/dev/null || true' | sed 's%^server/%%')
            echo "Changed Haskell files are:"
            echo "$CHANGED_HS_FILES"
            cd server
            curl -sL https://raw.github.com/jaspervdj/stylish-haskell/master/scripts/latest.sh | sh -s $(echo $CHANGED_HS_FILES) -i
            if [ -n "$(git status --porcelain)" ] ; then
              echo "Files that needed formatting:"
              git diff --name-only --diff-filter=M
              for hfile in $(git status --porcelain | sed -n 's/^ M //p'); do
                echo "::warning file=server/$hfile::This file needs to be formatted using stylish-haskell.\nRun `cd server && stylish-haskell $hfile` to do so."
              done
            fi
          fi