name: Notify documentation review assignees on new commits

on:
  pull_request_target:
    # Fires on new commits and on label changes, so the job
    # starts as soon as the label is added, then on every push.
    types: [synchronize, labeled]

concurrency:
  group: pr-${{ github.event.pull_request.number }}-doc-notify
  cancel-in-progress: true

jobs:
  ping:
    if: contains(github.event.pull_request.labels.*.name, 'documentation')
    permissions:
      issues: write
      pull-requests: read
    runs-on: [self-hosted, auto-provisioned, build-preset-analytic-node]
    env:
      GITHUB_TOKEN: ${{ secrets.YDBOT_TOKEN }}
    steps:
      - uses: actions/github-script@v8
        with:
          github-token: ${{ secrets.YDBOT_TOKEN }}
          script: |
            const pr        = context.payload.pull_request;
            const assignees = pr.assignees.map(a => `@${a.login}`).join(' ');
            if (!assignees) {
              core.info('No assignees, nothing to ping.');
              return;
            }

            // Check when the bot (this token) last commented
            const { data: me } = await github.rest.users.getAuthenticated();
            const { data: comments } = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo:  context.repo.repo,
              issue_number: pr.number,
              per_page: 1,
              sort: 'created',
              direction: 'desc'
            });
            const myLast = comments.find(c => c.user.login === me.login);

            // Skip if commented recently enough
            if (myLast && Date.now() - new Date(myLast.created_at) < 15 * 60 * 1000) {
              core.info('Skip: already commented within 15 minutes.');
              return;
            }

            await github.rest.issues.createComment({
              owner: context.repo.owner,
              repo:  context.repo.repo,
              issue_number: pr.number,
              body: `🔄 New commits pushed — ${assignees} please take a look.`
            });