/**
 * Legacy Auth Token Injection Test
 * 
 * Tests the full flow:
 *   1. Connect to old system MySQL (xzyx_online)
 *   2. Find user by phone
 *   3. Generate MD5 token (same formula as old Java system)
 *   4. Insert token into u_user_token
 *   5. Print cookie-setting instructions for manual browser verification
 * 
 * Usage:
 *   npx tsx scripts/test-legacy-auth.ts <phone>
 *   npx tsx scripts/test-legacy-auth.ts 18611348738
 */

import mysql from 'mysql2/promise';
import crypto from 'crypto';

const MYSQL_CONFIG = {
  host: process.env.LEGACY_MYSQL_HOST || '8.154.22.149',
  port: parseInt(process.env.LEGACY_MYSQL_PORT || '3306'),
  user: process.env.LEGACY_MYSQL_USER || 'xzyx_rw',
  password: process.env.LEGACY_MYSQL_PASSWORD || 'SKJfdwalkd',
  database: process.env.LEGACY_MYSQL_DATABASE || 'xzyx_online',
};

function generateToken(userId: number): string {
  const timestamp = Date.now();
  const raw = `KyKz1.0:${userId}:${timestamp}`;
  return crypto.createHash('md5').update(raw).digest('hex');
}

async function main() {
  const phone = process.argv[2];
  if (!phone) {
    console.error('Usage: npx tsx scripts/test-legacy-auth.ts <phone>');
    console.error('Example: npx tsx scripts/test-legacy-auth.ts 18611348738');
    process.exit(1);
  }

  console.log('='.repeat(60));
  console.log('Legacy Auth Token Injection Test');
  console.log('='.repeat(60));

  // Step 1: Connect
  console.log('\n[1/5] Connecting to MySQL...');
  const conn = await mysql.createConnection(MYSQL_CONFIG);
  console.log(`  OK - connected to ${MYSQL_CONFIG.host}:${MYSQL_CONFIG.port}/${MYSQL_CONFIG.database}`);

  // Step 2: Find user
  console.log(`\n[2/5] Looking up user by phone: ${phone}`);
  const [rows] = await conn.execute<any[]>(
    'SELECT id, phone, nickname, real_name, user_role FROM u_user_info WHERE phone = ?',
    [phone],
  );

  if (rows.length === 0) {
    console.log('  User NOT found. To test, pick an existing user:');
    const [sample] = await conn.execute<any[]>(
      'SELECT id, phone, nickname, real_name FROM u_user_info LIMIT 5',
    );
    console.table(sample);
    await conn.end();
    process.exit(1);
  }

  const user = rows[0];
  console.log(`  Found: id=${user.id}, nickname="${user.nickname}", role=${user.user_role}`);

  // Step 3: Generate token
  console.log('\n[3/5] Generating MD5 token...');
  const token = generateToken(user.id);
  console.log(`  Token: ${token}`);

  // Step 4: Delete old tokens + insert new one
  // gen_time must be milliseconds since epoch (Java System.currentTimeMillis()),
  // NOT MySQL NOW(). The old system's isTimeout() does millisecond arithmetic.
  console.log('\n[4/5] Deleting old tokens and inserting new one...');
  await conn.execute('DELETE FROM u_user_token WHERE user_id = ?', [user.id]);
  const genTime = Date.now();
  await conn.execute(
    'INSERT INTO u_user_token (user_id, token, gen_time, user_role) VALUES (?, ?, ?, ?)',
    [user.id, token, genTime, user.user_role],
  );
  console.log(`  OK - token inserted (gen_time=${genTime}, which is ${new Date(genTime).toISOString()})`);

  // Step 5: Verify
  console.log('\n[5/5] Verifying token in database...');
  const [verify] = await conn.execute<any[]>(
    'SELECT id, user_id, token, gen_time, user_role FROM u_user_token WHERE token = ?',
    [token],
  );
  console.log('  Verified:');
  console.table(verify);

  await conn.end();

  // Print manual test instructions
  console.log('\n' + '='.repeat(60));
  console.log('TOKEN INJECTION SUCCESSFUL!');
  console.log('='.repeat(60));
  console.log('\nManual browser test:');
  console.log('1. Open browser, go to https://www.xunzhengyixue.com');
  console.log('2. Open DevTools (F12) -> Console');
  console.log('3. Paste the following 3 lines:\n');
  
  const nickname = user.nickname || user.real_name || phone;
  console.log(`document.cookie = "token=${token}; domain=.xunzhengyixue.com; path=/";`);
  console.log(`document.cookie = "nickname=${encodeURIComponent(nickname)}; domain=.xunzhengyixue.com; path=/";`);
  console.log(`document.cookie = "id=${user.id}; domain=.xunzhengyixue.com; path=/";`);
  
  console.log('\n4. Refresh the page (F5)');
  console.log('5. You should see the user\'s projects without logging in manually');
  console.log('\n' + '='.repeat(60));
}

main().catch((err) => {
  console.error('Test failed:', err);
  process.exit(1);
});