post-live-url.yml

name: Comment live URL on merged publish PR

on:
  pull_request:
    types: [closed]
    branches: [main]

jobs:
  post-live-url:
    if: github.event.pull_request.merged == true && startsWith(github.event.pull_request.head.ref, 'publish/issue-')
    runs-on: ubuntu-latest
    permissions:
      pull-requests: write
    steps:
      - name: Find content file and build live URL
        id: detect
        uses: actions/github-script@v7
        with:
          script: |
            const { data: files } = await github.rest.pulls.listFiles({
              ...context.repo,
              pull_number: context.payload.pull_request.number,
            });

            const contentFile = files.find(f =>
              /^src\/content\/(apps|mechanisms|research|case-studies|campaigns)\/.+\.md$/.test(f.filename)
            );

            if (!contentFile) return;

            const [, type, slug] = contentFile.filename.match(
              /^src\/content\/(apps|mechanisms|research|case-studies|campaigns)\/(.+)\.md$/
            );

            core.setOutput('url', `https://gitcoin.co/${type}/${slug}`);

      - name: Comment on PR and issue
        if: steps.detect.outputs.url
        uses: actions/github-script@v7
        with:
          script: |
            const url = '${{ steps.detect.outputs.url }}';
            const body = `Live at: ${url}`;

            // Comment on the PR
            await github.rest.issues.createComment({
              ...context.repo,
              issue_number: context.payload.pull_request.number,
              body,
            });

            // Comment on the original issue (encoded in the branch name)
            const branch = context.payload.pull_request.head.ref;
            const issueMatch = branch.match(/publish\/issue-(\d+)/);
            if (issueMatch) {
              await github.rest.issues.createComment({
                ...context.repo,
                issue_number: parseInt(issueMatch[1]),
                body,
              });
            }