name: Unlabel not-ready pull requests

on:
  schedule:
    - cron: 15 3 * * *

permissions:
  contents: read

jobs:
  remove-label:
    name: Remove author ready
    if: github.repository == 'nodejs/node'
    runs-on: ubuntu-slim
    permissions:
      pull-requests: write
    steps:
      - name: Remove the label and comment
        env:
          GH_TOKEN: ${{ github.token }}
          MESSAGE: >-
            This pull request has conflicts with its base branch, removing the
            `author ready` label.

            Please
            [rebase](https://github.com/nodejs/node/blob/HEAD/doc/contributing/pull-requests.md#step-5-rebase)
            your branch onto the latest base branch, resolve the conflicts
            locally, and force-push.

            Afterwards the pull request needs a fresh collaborator approval,
            and a collaborator will add the label back once it is
            [author ready](https://github.com/nodejs/node/blob/HEAD/doc/contributing/collaborator-guide.md#author-ready-pull-requests)
            again.
        run: |
          # Requesting the mergeable field makes GitHub compute the merge state,
          # pull requests still reported as UNKNOWN are picked up by a later run.
          gh pr list \
            --repo "$GITHUB_REPOSITORY" \
            --label 'author ready' \
            --state open \
            --limit 100 \
            --json number,mergeable \
            --jq '.[] | select(.mergeable == "CONFLICTING") | .number' |
            while read -r number; do
              gh pr edit "$number" --repo "$GITHUB_REPOSITORY" --remove-label 'author ready'
              printf '%s\n' "$MESSAGE" |
                gh pr comment "$number" --repo "$GITHUB_REPOSITORY" --body-file -
            done