# NOTE: pull_request_target is required to have write permissions to add labels on PRs from forks.
# This workflow must not be modified to check out or execute untrusted PR code, as it runs with base repo permissions.
# the pull_request_target event.
name: Label PRs with Conventional Commits
on:
  pull_request_target:
    types: [opened, edited, synchronize]
  merge_group:

jobs:
  validate-pr-title:
    name: Validate PR Title
    runs-on: ubuntu-latest
    steps:
      - name: Validate PR title follows Conventional Commits
        id: validate
        uses: Namchee/conventional-pr@v0.15
        with:
          access_token: ${{ secrets.GITHUB_TOKEN }}
          issue: false

  validate-pr-description:
    name: Validate PR Description
    runs-on: ubuntu-latest
    permissions:
      pull-requests: read
    steps:
      - name: Check PR Description
        uses: actions/github-script@v8.0
        with:
          script: |
            const body = context.payload.pull_request.body || '';
            const title = context.payload.pull_request.title || '';
            const prNumber = context.payload.pull_request.number;

            console.log(`Checking PR #${prNumber}: ${title}`);

            // Skip validation for bot PRs
            if (context.payload.pull_request.user.type === 'Bot') {
              console.log('Skipping validation for bot PR');
              return;
            }

            // Check minimum description length (at least 10 characters)
            const minLength = 10;
            if (body.trim().length < minLength) {
              core.setFailed(`PR description is too short. Please provide a meaningful description (at least ${minLength} characters).`);
              return;
            }

            // Check for empty or placeholder descriptions
            const placeholderPatterns = [
              /^[\s\n]*$/,
              /^(n\/a|na|none|no description|todo|tbd|wip)$/i,
              /^[\-\*\s]*$/
            ];

            for (const pattern of placeholderPatterns) {
              if (pattern.test(body.trim())) {
                core.setFailed('PR description appears to be empty or a placeholder. Please provide a meaningful description.');
                return;
              }
            }

            console.log('PR description validation passed!');

  label:
    needs: [validate-pr-title]
    name: Label PR
    runs-on: ubuntu-latest
    if: ${{ github.event.pull_request.user.type != 'Bot'}}
    steps:
      - uses: bcoe/conventional-release-labels@v1
        with:
          type_labels: '{"feat": "enhancement","fix": "bug","docs": "documentation","style": "style","refactor": "refactor","perf": "performance","test": "test","chore": "chore","build": "build"}'