name: Check change note

on:
  pull_request_target:
    types: [labeled, unlabeled, opened, synchronize, reopened, ready_for_review]
    paths:
      - "*/ql/src/**/*.ql"
      - "*/ql/src/**/*.qll"
      - "*/ql/lib/**/*.ql"
      - "*/ql/lib/**/*.qll"
      - "!**/experimental/**"
      - "!ql/**"
      - "!swift/**"
      - ".github/workflows/check-change-note.yml"

jobs:
  check-change-note:
    runs-on: ubuntu-latest
    steps:
      - name: Fail if no change note found. To fix, either add one, or add the `no-change-note-required` label.
        if: |
          github.event.pull_request.draft == false &&
          !contains(github.event.pull_request.labels.*.name, 'no-change-note-required')
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          gh api 'repos/${{github.repository}}/pulls/${{github.event.number}}/files' --paginate --jq 'any(.[].filename ; test("/change-notes/.*[.]md$"))' |
          grep true -c
      - name: Fail if the change note filename doesn't match the expected format. The file name must be of the form 'YYYY-MM-DD.md' or 'YYYY-MM-DD-{title}.md', where '{title}' is arbitrary text.
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          gh api 'repos/${{github.repository}}/pulls/${{github.event.number}}/files' --paginate --jq '[.[].filename | select(test("/change-notes/.*[.]md$"))] | all(test("/change-notes/[0-9]{4}-[0-9]{2}-[0-9]{2}.*[.]md$"))' |
          grep true -c