sync_issue_metadata.yml

name: Sync Issue Labels and Assignees to PR
on:
  pull_request:
    types: [opened, edited, synchronize]

jobs:
  sync-labels-assignees:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Sync Labels and Assignees
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const pr = context.payload.pull_request;
            const prBody = pr.body || '';
            
            // Regular expressions to match "fixes #123", "closes #123", or "fix #123" (case insensitive)
            const issueRefs = prBody.match(/(?:fixes|closes|fix)\s*#(\d+)/gi);
            
            if (!issueRefs) {
              console.log('No issue references found in PR description');
              return;
            }
            
            // Extract issue numbers
            const issueNumbers = issueRefs.map(ref => 
              parseInt(ref.match(/\d+/)[0])
            );
            
            for (const issueNumber of issueNumbers) {
              try {
                // Get issue details
                const issue = await github.rest.issues.get({
                  owner: context.repo.owner,
                  repo: context.repo.repo,
                  issue_number: issueNumber
                });
                
                // Sync labels
                if (issue.data.labels && issue.data.labels.length > 0) {
                  const labels = issue.data.labels.map(label => label.name);
                  await github.rest.issues.addLabels({
                    owner: context.repo.owner,
                    repo: context.repo.repo,
                    issue_number: pr.number,
                    labels: labels
                  });
                  console.log(`Synced labels from issue #${issueNumber} to PR #${pr.number}`);
                }
                
                // Sync assignees
                if (issue.data.assignees && issue.data.assignees.length > 0) {
                  const assignees = issue.data.assignees.map(assignee => assignee.login);
                  await github.rest.issues.addAssignees({
                    owner: context.repo.owner,
                    repo: context.repo.repo,
                    issue_number: pr.number,
                    assignees: assignees
                  });
                  console.log(`Synced assignees from issue #${issueNumber} to PR #${pr.number}`);
                }
              } catch (error) {
                console.error(`Error processing issue #${issueNumber}:`, error);
              }
            }