changes.yml

name: changes

on:
  push:
    branches: [ main ]
  pull_request:

jobs:
  changes:
    name: Detect files changed

    runs-on: ubuntu-latest
    permissions:
      pull-requests: read

    # # this is for job-level control
    # outputs:
    #   npm-test:          ${{ steps.filter.outputs.should-run-npm-test     }}
    #   pytest:            ${{ steps.filter.outputs.should-run-pytest       }}
    #   darker:            ${{ steps.filter.outputs.should-run-darker       }}
    #   new-unknown-files: ${{ steps.filter.outputs.new-files-at-root-level }}

    steps:
      - name: Checkout source code (merge ref)
        uses: actions/checkout@v4

      - id: filter
        name: Detect files changed
        uses: dorny/paths-filter@v3
        with:
          filters: .github/filters.yml

      # echoing (for testing purposes)
      - if:  ${{ steps.filter.outputs.should-run-npm-test == 'true' }}
        run: echo 'frontend files changed; should run npm-test.yml'

      - if:  ${{ steps.filter.outputs.should-run-pytest == 'true' }}
        run: echo 'backend files changed; should run pytest.yml'

      - if:  ${{ steps.filter.outputs.should-run-darker == 'true' }}
        run: echo 'python files changed; should run darker.yml'

      - if:  ${{ steps.filter.outputs.new-files-at-root-level == 'true' }}
        run: echo 'unlisted files changed; will likely run pytest and npm-test'