name: PR Workflow Approval Reminder

on:
  # schedule:
  #   - cron: "0 */6 * * *" # every 6 hours
  workflow_dispatch:

jobs:
  check-prs:
    runs-on: ubuntu-latest
    steps:
      - name: Check PRs blocked by workflow approval
        id: filter
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const { data: pulls } = await github.rest.pulls.list({
              owner: context.repo.owner,
              repo: context.repo.repo,
              state: 'open'
            });

            let result = '';

            for (const pr of pulls) {
              const { data: runs } = await github.rest.actions.listWorkflowRunsForRepo({
                owner: context.repo.owner,
                repo: context.repo.repo,
                event: 'pull_request',
                head_sha: pr.head.sha
              });

              const waitingRuns = runs.workflow_runs.filter(r => r.status === 'waiting');
              if (waitingRuns.length > 0) {
                const runNames = waitingRuns.map(r => r.name).join(', ');
                result += `• **PR #${pr.number}**: [${pr.title}](${pr.html_url})  \n   ⏸️ Workflows: ${runNames}\n\n`;
              }
            }

            let message;
            if (result === '') {
              message = '✅ No PRs are blocked by workflow approval right now.';
            } else {
              message = `🚦 **PRs waiting for maintainer approval to run workflows:**\n\n${result}`;
            }

            core.setOutput('message', message);

      - name: Send message to Discord via webhook
        run: |
          payload=$(jq -n --arg content "${{ steps.filter.outputs.message }}" '{content: $content}')
          curl -X POST -H "Content-Type: application/json" \
            -d "$payload" \
            ${{ secrets.PR_REMINDER_DISCORD_WEBHOOK }}