changelog-label.yml

name: Check needs-changelog label freshness

on:
  workflow_dispatch: {}
  schedule:
    - cron: '55 20 * * *'

jobs:
  check_labels:
    name: Check Labels
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Switch to Changelog ref
        run: |
          git fetch origin +refs/notes/changelog:refs/notes/changelog
          git checkout refs/notes/changelog
      - name: Check for unresolved changelog labels
        # For all merged PRs with the `needs-changelog` label, check if a note exists on the merge commit.
        # If it does, remove the label.
        # If not, print a summary of all PRs that need a changelog entry.
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          summary=$(mktemp)
          remove=$(mktemp)
          trap 'rm -rf "$summary" "$remove"' EXIT
          gh api graphql -f query='
          {
            repository(owner: "quay", name: "claircore") {
              pullRequests(first: 100, labels: ["needs-changelog"], states: [MERGED]) {
                nodes {
                  id
                  title
                  number
                  url
                  mergeCommit {
                    oid
                  }
                }
              }
            }
          }
          ' -q '.data.repository.pullRequests.nodes[]' |
            jq --arg remove "$remove" --arg summary "$summary" \
              '@sh "if test -f \(.mergeCommit.oid); then echo \(.id) >> \($remove); else echo \(@text "- [#\(.number)](\(.url)): \(.title)") >> \($summary); fi"' |
            xargs -t -n1 -r sh -c
          if test -s "$remove"; then
            l=$(gh api graphql -f query='{repository(owner: "quay", name: "claircore") {label(name: "needs-changelog") {id}}}'|
              jq -r '.data.repository.label.id')
            cat "$remove" | while read id; do
              gh api graphql -F "id=${id}" -F "l=${l}" -f query='
              mutation rm($id: ID!, $l: ID!) {
                removeLabelsFromLabelable(input: {
                  labelableId: $id,
                  labelIds: [$l],
                }){clientMutationId}
              }
              '
            done
          fi
          test -s "$summary" || exit 0
          cat <<'.' >> "$GITHUB_STEP_SUMMARY"
          ### Changlog notes missing:
          
          .
          cat "$summary" >> "$GITHUB_STEP_SUMMARY"
          cat <<'.' >> "$GITHUB_STEP_SUMMARY"
          
          * * *
          If the changelog message is on another commit, the label needs to be removed manually. 🫥
          .