name: Check Deployment Readiness

on:
  pull_request:
    types: [labeled]

jobs:
  check-and-deploy:
    runs-on: ubuntu-latest
    if: github.event.label.name == 'awaiting-deployment'
    permissions:
      actions: write
      pull-requests: read
      contents: write

    steps:
      - name: Check build workflow status
        id: check
        uses: actions/github-script@v7
        with:
          script: |
            const prNumber = context.payload.pull_request.number;
            const headSha = context.payload.pull_request.head.sha;

            console.log(`Checking build status for PR #${prNumber}, commit ${headSha}`);

            // Use Check Runs API to get the status of the build workflow
            const { data: checkRuns } = await github.rest.checks.listForRef({
              owner: context.repo.owner,
              repo: context.repo.repo,
              ref: headSha,
              check_name: 'build'
            });

            console.log(`Found ${checkRuns.total_count} check runs for 'build'`);

            if (checkRuns.total_count === 0) {
              console.log('No build check found for this commit');
              core.setOutput('should_deploy', 'false');
              core.setOutput('reason', 'No build check found');
              return;
            }

            const buildCheck = checkRuns.check_runs[0];
            console.log(`Build check status: ${buildCheck.status}, conclusion: ${buildCheck.conclusion}`);

            // Check if build is still running
            if (buildCheck.status !== 'completed') {
              console.log('Build check is still running');
              core.setOutput('should_deploy', 'false');
              core.setOutput('reason', 'Build check is still running');
              return;
            }

            // Check if build failed
            if (buildCheck.conclusion !== 'success') {
              console.log(`Build check failed with conclusion: ${buildCheck.conclusion}`);
              core.setOutput('should_deploy', 'false');
              core.setOutput('reason', `Build check ${buildCheck.conclusion}`);
              return;
            }

            // Build completed successfully
            console.log('Build check completed successfully, ready to deploy');
            core.setOutput('should_deploy', 'true');

      - name: Trigger deployment
        if: steps.check.outputs.should_deploy == 'true'
        uses: actions/github-script@v7
        with:
          script: |
            await github.rest.actions.createWorkflowDispatch({
              owner: context.repo.owner,
              repo: context.repo.repo,
              workflow_id: 'deploy-pr.yml',
              ref: context.payload.pull_request.head.ref,
              inputs: {
                pr_number: context.payload.pull_request.number.toString()
              }
            });
            console.log('Deployment workflow triggered');