add-rna-closes-label.yml

name: Add closes:rna label to PRs

on:
  pull_request_target:
    types: [opened, edited]

jobs:
  label-rna-project:
    runs-on: ubuntu-latest
    permissions:
      pull-requests: write
      contents: read

    steps:
      - name: Label if PR closes an issue on the RNA Program Board
        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
        with:
          script: |
            const label = "closes:rna";
            const rnaBoardNumber = 2076;
            const prNumber = context.payload.pull_request.number;

            const existingLabels = context.payload.pull_request.labels.map(l => l.name);
            if (existingLabels.includes(label)) {
              return;
            }

            const { repository } = await github.graphql(`
              query($owner: String!, $repo: String!, $prNumber: Int!) {
                repository(owner: $owner, name: $repo) {
                  pullRequest(number: $prNumber) {
                    body
                    closingIssuesReferences(first: 10) {
                      nodes {
                        projectItems(first: 20) {
                          nodes {
                            project { number }
                          }
                        }
                      }
                    }
                  }
                }
              }
            `, {
              owner: context.repo.owner,
              repo: context.repo.repo,
              prNumber,
            });

            const pr = repository.pullRequest;

            const isOnRnaBoard = (issue) =>
              issue.projectItems.nodes.some(item => item.project.number === rnaBoardNumber);

            // Check closingIssuesReferences first (works for PRs targeting default branch)
            if (pr.closingIssuesReferences.nodes.some(isOnRnaBoard)) {
              await github.rest.issues.addLabels({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: prNumber,
                labels: [label],
              });
              return;
            }

            // Fallback: parse issue references from PR body
            const body = pr.body || "";
            const pattern = /(?:close[sd]?|fix(?:e[sd])?|resolve[sd]?)[\s:]*(?:https:\/\/github\.com\/([^/]+\/[^/]+)\/issues\/(\d+)|#(\d+))/gi;
            const issueRefs = [];
            let match;
            while ((match = pattern.exec(body)) !== null) {
              if (match[1] && match[2]) {
                const [owner, repo] = match[1].split("/");
                issueRefs.push({ owner, repo, number: parseInt(match[2]) });
              } else if (match[3]) {
                issueRefs.push({ owner: context.repo.owner, repo: context.repo.repo, number: parseInt(match[3]) });
              }
            }

            for (const ref of issueRefs) {
              try {
                const { repository: issueRepo } = await github.graphql(`
                  query($owner: String!, $repo: String!, $number: Int!) {
                    repository(owner: $owner, name: $repo) {
                      issue(number: $number) {
                        projectItems(first: 20) {
                          nodes {
                            project { number }
                          }
                        }
                      }
                    }
                  }
                `, ref);

                if (isOnRnaBoard(issueRepo.issue)) {
                  await github.rest.issues.addLabels({
                    owner: context.repo.owner,
                    repo: context.repo.repo,
                    issue_number: prNumber,
                    labels: [label],
                  });
                  return;
                }
              } catch (e) {
                // Issue may not exist or be inaccessible
              }
            }