Daybreak/.github/workflows/label-merged-issues.yaml

name: Label Merged Issues

on:
  pull_request:
    types: [closed]
    branches:
      - 'release/**'

jobs:
  label-issues:
    if: github.event.pull_request.merged == true
    runs-on: ubuntu-latest

    steps:
      - name: Label linked issues as merged
        uses: actions/github-script@v9
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const prBody = context.payload.pull_request.body || '';
            const prTitle = context.payload.pull_request.title || '';

            // Match issue references like #123, fixes #123, closes #123, resolves #123
            const issuePattern = /(?:close[sd]?|fix(?:e[sd])?|resolve[sd]?)?[\s:]*#(\d+)/gi;
            const issueNumbers = new Set();

            // Search in PR body and title
            const textToSearch = `${prTitle} ${prBody}`;
            let match;
            while ((match = issuePattern.exec(textToSearch)) !== null) {
              issueNumbers.add(parseInt(match[1]));
            }

            // Apply 'merged' label to each linked issue
            for (const issueNumber of issueNumbers) {
              try {
                await github.rest.issues.addLabels({
                  owner: context.repo.owner,
                  repo: context.repo.repo,
                  issue_number: issueNumber,
                  labels: ['merged']
                });
                console.log(`Added 'merged' label to issue #${issueNumber}`);
              } catch (error) {
                console.log(`Failed to label issue #${issueNumber}: ${error.message}`);
              }
            }