name: Checklist

on:
  pull_request:
    paths:
      - 'CHANGELOG.md'

jobs:
  changelog:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/github-script@v7
        with:
          script: |
            const fs = require('fs');
            const path = 'CHANGELOG.md';
            const changelog = fs.readFileSync(path, 'utf8');
            let failed = false;

            try {
              // Check each line that starts with '##' for the version & date format
              changelog.split('\n').forEach((line, index) => {
                index += 1;

                if (!line.startsWith('## '))
                  return;

                if (line.toLowerCase().includes('unreleased')) {
                  const message = 'Unreleased section found. Please release the changes before merging.';
                  core.error(message, {
                    title: 'Unreleased Section Found',
                    file: path,
                    startline: index,
                  });
                  failed = true;
                }

                // Expected format: '## [X.Y.Z] - YYYY-MM-DD'
                const pattern = /^\d+\.\d+\.\d+ - \d{4}-\d{2}-\d{2}$/;
                if (pattern.test(line)) {
                  const message = 'Invalid version/date format. Expected: "## [X.Y.Z] - YYYY-MM-DD"';
                  core.error(message, {
                    title: 'Invalid Version/Date Format',
                    file: path,
                    startline: index,
                  });
                  failed = true;
                }
              });

              if (failed) {
                core.setFailed('Changelog validation failed')
              }
            } catch (error) {
              core.setFailed(`Exception occurred while validating changelog: ${error}`);
            }
            
  draft:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/github-script@v7
        with:
          script: |
            const forbiddenLabels = ['draft'];
            let labels = context.payload.pull_request.labels;

            if (labels.some(l => forbiddenLabels.includes(l.name))) {
              core.setFailed(`Forbidden labels detected: ${forbiddenLabels.join(', ')}`);
            }