/**
 * Name: gitreverse-scraper.js
 * Deskripsi: Scraper untuk mendapatkan prompt AI create website/repo dari GitReverse
 *
 * Sumber: https://whatsapp.com/channel/0029VbDLqe7EquiSF4STU13o/299
 * Credt By Zx
**/
function extractSlug(url) {
  try {
    const { hostname, pathname } = new URL(url);
    const cleanPath = pathname.replace(/\/+$/, ''); // buang trailing slash
    const slug = (hostname + cleanPath)
      .replace(/^www\./, '')
      .replace(/[^a-zA-Z0-9]/g, '-')
      .replace(/-+/g, '-')
      .replace(/^-|-$/g, '')
      .toLowerCase();
    return slug;
  } catch {
    throw new Error(`URL tidak valid: ${url}`);
  }
}

async function webtopromt(targetUrl) {
  const siteSlug = extractSlug(targetUrl);

  const res = await fetch(`https://www.gitreverse.com/api/reverse-website`, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ siteSlug, targetUrl, stream: true }),
  });

  if (!res.ok) {
    throw new Error(`HTTP ${res.status}: ${res.statusText}`);
  }

  const text = await res.text();

  const dataLines = text
    .split('\n')
    .filter(line => line.startsWith('data: '))
    .map(line => line.slice(6)); // buang prefix "data: "

  for (const dataStr of dataLines) {
    try {
      const data = JSON.parse(dataStr);
      if (data.prompt) {
        return {
          prompt: data.prompt,
          designPath: data.designPath || null,
          fromCache: data.fromCache ?? false,
        };
      }
    } catch {
    }
  }

  throw new Error('Tidak ditemukan prompt dalam response SSE');
}

async function repotopromt(repoUrl) {
  // Terima format "owner/repo" atau full URL GitHub
  let cleanRepo = repoUrl
    .replace(/^https?:\/\/(www\.)?github\.com\//, '')
    .replace(/\/+$/, '');

  console.log(`🔍 Scraping repo prompt...`);
  console.log(`   Repo: ${cleanRepo}`);

  const res = await fetch(`https://www.gitreverse.com/api/reverse-prompt`, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ repoUrl: cleanRepo }),
  });

  if (!res.ok) {
    throw new Error(`HTTP ${res.status}: ${res.statusText}`);
  }

  const data = await res.json();
  if (!data.prompt) {
    throw new Error('Tidak ditemukan prompt dalam response');
  }

  return { prompt: data.prompt };
}
 
/**
async function main() {
  const args = process.argv.slice(2);

  if (args.length === 0) {
    console.log(`
╔══════════════════════════════════════════════════════════╗
║         GitReverse - AI Prompt Generator         ║
╠══════════════════════════════════════════════════════════╣
║                                                          ║
║  Usage:                                                  ║
║    node gitreverse-scraper.js <url-or-repo>              ║
║    node gitreverse-scraper.js --website <url>            ║
║    node gitreverse-scraper.js --repo <owner/repo>        ║
║    node gitreverse-scraper.js --json <url-or-repo>       ║
║                                                          ║
║  Examples:                                               ║
║    node gitreverse-scraper.js https://pastebin.com/      ║
║    node gitreverse-scraper.js --repo shahednur/RideZen   ║
║    node gitreverse-scraper.js --json https://linear.app  ║
║                                                          ║
╚══════════════════════════════════════════════════════════╝
`);
    process.exit(0);
  }

  let mode = 'auto'; // auto | website | repo
  let outputJson = false;
  let target = null;

  for (let i = 0; i < args.length; i++) {
    if (args[i] === '--website') mode = 'website';
    else if (args[i] === '--repo') mode = 'repo';
    else if (args[i] === '--json') outputJson = true;
    else target = args[i];
  }

  if (!target) {
    console.error('❌ Error: URL atau repo tidak diberikan.');
    process.exit(1);
  }

  try {
    let result;

    if (
      mode === 'repo' ||
      (mode === 'auto' && (
        target.includes('github.com') ||
        /^[a-zA-Z0-9_-]+\/[a-zA-Z0-9_.-]+$/.test(target)
      ))
    ) {
      result = await repotopromt(target);
    } else {
      if (!/^https?:\/\//.test(target)) {
        target = 'https://' + target;
      }
      result = await webtopromt(target);
    }

    if (outputJson) {
      console.log(JSON.stringify(result, null, 2));
    } else {
      console.log('\n✅ PROMPT AI:\n');
      console.log('─'.repeat(60));
      console.log(result.prompt);
      console.log('─'.repeat(60));
      if (result.designPath) {
        console.log(`\n🎨 Design System: https://www.gitreverse.com${result.designPath}`);
      }
      if (result.fromCache) {
        console.log('📦 (dari cache)');
      }
    }
  } catch (err) {
    console.error(`\n❌ Error: ${err.message}`);
    process.exit(1);
  }
}

module.exports = { webtopromt, repotopromt, extractSlug };

if (require.main === module) {
  main();
}
*/