name: Pull Request Title Validation

on:
  pull_request:
    types: [opened, reopened, edited, synchronize]

permissions:
  issues: write
  pull-requests: write

jobs:
  pull-request-title-validation:
    runs-on: ubuntu-latest

    steps:
      - name: Validate Pull Request Title
        id: check_title
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const titleRegex = /^(Revert \")?(feat|fix|docs|style|refactor|perf|test|update|build|ci|chore)(\([\w\/-]+\))?:\s.+$/g;
            const title = context.payload.pull_request.title;
            const isValid = titleRegex.test(title);
            if (!isValid) {
              if ((context.payload.action === 'opened') || (context.payload.action === 'reopened')) {
                const prNumber = context.payload.pull_request.number;
                const author = context.payload.pull_request.user.login;
                const message = `@${author} your pull request title "${context.payload.pull_request.title}" does not conform to our [naming conventions](https://www.conventionalcommits.org/en/v1.0.0/).\n\nPlease update the title to match the pattern: "feat|build|chore|style|fix|update|ci(\\<area\\>): \\<description\\>\n\nYou can check your title at this [regex101 link](https://regex101.com/r/jOZ6kU/1)."`;
                github.rest.issues.createComment({
                  owner: context.repo.owner,
                  repo: context.repo.repo,
                  issue_number: prNumber,
                  body: message
                });
              }
              core.setFailed(`PR title "${title}" doesn't match the required format.`)
            }