import { dbService } from './couchdb.factory';
import { AccountStatus } from './auth/auth.constants';
import { UserRole } from '../types';

export class DatabaseSeeder {
  private static seedingInProgress = false;
  private static seedingCompleted = false;

  async seedDefaultAdmin(): Promise<void> {
    const adminEmail = 'admin@localhost';
    const adminPassword = 'admin123!';

    console.log('🌱 Starting admin user seeding...');
    console.log('📧 Admin email:', adminEmail);

    try {
      // Check if admin already exists
      const existingAdmin = await dbService.findUserByEmail(adminEmail);

      if (existingAdmin) {
        console.log('✅ Default admin user already exists');
        console.log('👤 Existing admin:', existingAdmin);

        // Check if admin needs to be updated to correct role/status
        if (
          existingAdmin.role !== UserRole.ADMIN ||
          existingAdmin.status !== AccountStatus.ACTIVE
        ) {
          console.log('🔧 Updating admin user role and status...');
          const updatedAdmin = {
            ...existingAdmin,
            role: UserRole.ADMIN,
            status: AccountStatus.ACTIVE,
            emailVerified: true,
          };
          await dbService.updateUser(updatedAdmin);
          console.log('✅ Admin user updated successfully');
          console.log('👤 Updated admin:', updatedAdmin);
        }
        return;
      }

      console.log('🔨 Creating new admin user...');
      // Create default admin user
      const adminUser = await dbService.createUserWithPassword(
        adminEmail,
        adminPassword,
        'admin'
      );

      console.log('👤 Admin user created:', adminUser);

      // Update user to admin role and active status
      const updatedAdmin = {
        ...adminUser,
        role: UserRole.ADMIN,
        status: AccountStatus.ACTIVE,
        emailVerified: true,
        createdAt: new Date(),
        lastLoginAt: new Date(),
      };

      await dbService.updateUser(updatedAdmin);

      console.log('✅ Default admin user created successfully');
      console.log('👤 Final admin user:', updatedAdmin);
      console.log('📧 Email:', adminEmail);
      console.log('🔑 Password:', adminPassword);
      console.log('⚠️  Please change the default password after first login!');
    } catch (error) {
      console.error('❌ Failed to create default admin user:', error);
      throw error;
    }
  }

  async seedDatabase(): Promise<void> {
    // Prevent multiple seeding attempts
    if (DatabaseSeeder.seedingInProgress || DatabaseSeeder.seedingCompleted) {
      console.log('🔄 Seeding already in progress or completed, skipping...');
      return;
    }

    DatabaseSeeder.seedingInProgress = true;
    console.log('🌱 Starting database seeding...');

    try {
      await this.seedDefaultAdmin();
      DatabaseSeeder.seedingCompleted = true;
      console.log('🎉 Database seeding completed successfully!');
    } catch (error) {
      console.error('💥 Database seeding failed:', error);
      throw error;
    } finally {
      DatabaseSeeder.seedingInProgress = false;
    }
  }
}

export const databaseSeeder = new DatabaseSeeder();

// The seeding will be called explicitly from App.tsx