#!/usr/bin/env node

/**
 * Production database setup script for DigitalOcean
 * This script sets up the initial database structure and creates a default admin user
 */

import { drizzle } from 'drizzle-orm/mysql2';
import mysql from 'mysql2/promise';
import { migrate } from 'drizzle-orm/mysql2/migrator';
import bcrypt from 'bcrypt';
import { nanoid } from 'nanoid';
import { config } from 'dotenv';
import { fileURLToPath } from 'url';
import { dirname, join } from 'path';
import * as schema from '../src/lib/db/schema.js';

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);

// Load environment variables
config();

async function setupProductionDatabase() {
  console.log('🚀 Setting up production database...');
  
  if (!process.env.DATABASE_URL) {
    console.error('❌ DATABASE_URL environment variable is required');
    process.exit(1);
  }

  let connection;
  
  try {
    // Parse DATABASE_URL for DigitalOcean managed database
    const dbUrl = new URL(process.env.DATABASE_URL);
    
    // Create connection to MySQL
    connection = await mysql.createConnection({
      host: dbUrl.hostname,
      port: parseInt(dbUrl.port) || 25060,
      user: dbUrl.username,
      password: dbUrl.password,
      database: dbUrl.pathname.slice(1), // Remove leading slash
      ssl: {
        rejectUnauthorized: false // DigitalOcean managed databases use SSL
      },
      connectTimeout: 60000,
      acquireTimeout: 60000,
      timeout: 60000,
    });

    console.log('✅ Connected to database');

    // Create drizzle instance
    const db = drizzle(connection, { schema });

    // Run migrations
    console.log('🔄 Running migrations...');
    await migrate(db, { migrationsFolder: join(__dirname, '../drizzle') });
    console.log('✅ Migrations completed');

    // Create default admin user
    console.log('👤 Creating default admin user...');
    
    const adminEmail = process.env.ADMIN_EMAIL || 'admin@scriptshare.com';
    const adminPassword = process.env.ADMIN_PASSWORD || 'admin123';
    const adminUsername = process.env.ADMIN_USERNAME || 'admin';
    
    // Check if admin user already exists
    const existingAdmin = await db.query.users.findFirst({
      where: (users, { eq }) => eq(users.email, adminEmail)
    });

    if (existingAdmin) {
      console.log('ℹ️ Admin user already exists, skipping creation');
    } else {
      const hashedPassword = await bcrypt.hash(adminPassword, 10);
      
      await db.insert(schema.users).values({
        id: nanoid(),
        email: adminEmail,
        username: adminUsername,
        displayName: 'System Administrator',
        isAdmin: true,
        isModerator: true,
        avatarUrl: null,
        bio: 'Default system administrator account'
      });

      console.log('✅ Default admin user created');
      console.log(`📧 Email: ${adminEmail}`);
      console.log(`👤 Username: ${adminUsername}`);
      console.log(`🔑 Password: ${adminPassword}`);
      console.log('⚠️ Please change the default password after first login!');
    }

    console.log('🎉 Production database setup completed successfully!');
    
  } catch (error) {
    console.error('❌ Setup failed:', error);
    process.exit(1);
  } finally {
    if (connection) {
      await connection.end();
      console.log('🔌 Database connection closed');
    }
  }
}

// Run setup if this script is executed directly
if (import.meta.url === `file://${process.argv[1]}`) {
  setupProductionDatabase().catch(console.error);
}

export { setupProductionDatabase };