const { PrismaClient } = require('@prisma/client');
const bcrypt = require('bcryptjs');
const readline = require('readline');

const prisma = new PrismaClient();

const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

const question = (query) => new Promise((resolve) => rl.question(query, resolve));

async function setupAdminUser() {
  try {
    console.log('🔐 Setting up PatchMon Admin User');
    console.log('=====================================\n');

    // Check if any users exist
    const existingUsers = await prisma.user.count();
    if (existingUsers > 0) {
      console.log('⚠️  Users already exist in the database.');
      const overwrite = await question('Do you want to create another admin user? (y/N): ');
      if (overwrite.toLowerCase() !== 'y' && overwrite.toLowerCase() !== 'yes') {
        console.log('❌ Setup cancelled.');
        return;
      }
    }

    // Get user input
    const username = await question('Enter admin username: ');
    if (!username.trim()) {
      console.log('❌ Username is required.');
      return;
    }

    const email = await question('Enter admin email: ');
    if (!email.trim()) {
      console.log('❌ Email is required.');
      return;
    }

    const password = await question('Enter admin password (min 6 characters): ');
    if (password.length < 6) {
      console.log('❌ Password must be at least 6 characters.');
      return;
    }

    // Check if username or email already exists
    const existingUser = await prisma.user.findFirst({
      where: {
        OR: [
          { username: username.trim() },
          { email: email.trim() }
        ]
      }
    });

    if (existingUser) {
      console.log('❌ Username or email already exists.');
      return;
    }

    // Hash password
    console.log('\n🔄 Creating admin user...');
    const passwordHash = await bcrypt.hash(password, 12);

    // Create admin user
    const user = await prisma.user.create({
      data: {
        username: username.trim(),
        email: email.trim(),
        passwordHash: passwordHash,
        role: 'admin'
      },
      select: {
        id: true,
        username: true,
        email: true,
        role: true,
        createdAt: true
      }
    });

    console.log('✅ Admin user created successfully!');
    console.log('\n📋 User Details:');
    console.log(`   Username: ${user.username}`);
    console.log(`   Email: ${user.email}`);
    console.log(`   Role: ${user.role}`);
    console.log(`   Created: ${user.createdAt.toISOString()}`);

    console.log('\n🎉 Setup complete!');
    console.log('\nNext steps:');
    console.log('1. The backend server is already running as a systemd service');
    console.log('2. The frontend is already built and served by Nginx');
    console.log('3. Visit https://' + process.env.FQDN + ' and login with your credentials');
    console.log('4. Use the management script: ./manage.sh {status|restart|logs|update|backup|credentials|reset-admin}');

  } catch (error) {
    console.error('❌ Error setting up admin user:', error);
  } finally {
    rl.close();
    await prisma.$disconnect();
  }
}

// Run the setup
setupAdminUser();