label.yml

name: Automatic PR Labeler
on:
    pull_request_target:
        types: [opened, reopened, edited]

jobs:
    labeler:
        runs-on: ubuntu-latest
        steps:
            - name: Label PR
              uses: actions/github-script@v5
              with:
                  github-token: ${{ secrets.PAT }}
                  script: |
                      const { owner, repo, number: issue_number } = context.issue;
                      const pr = await github.rest.pulls.get({ owner, repo, pull_number: issue_number });
                      const title = pr.data.title;
                      const labRegex = /\[LAB(\d+)\]/i;

                      const match = title.match(labRegex);
                      if (match) {
                        const labelToAdd = 'lab' + match[1];
                        await github.rest.issues.addLabels({ owner, repo, issue_number, labels: [labelToAdd] });
                      }