/**
 * Database configuration and Prisma client singleton
 */

import { PrismaClient } from '@prisma/client';

// PrismaClient is attached to the `global` object in development to prevent
// exhausting your database connection limit.
const globalForPrisma = global as unknown as { prisma: PrismaClient };

export const prisma =
  globalForPrisma.prisma ||
  new PrismaClient({
    log: process.env.NODE_ENV === 'development' ? ['query', 'error', 'warn'] : ['error'],
  });

if (process.env.NODE_ENV !== 'production') {
  globalForPrisma.prisma = prisma;
}

/**
 * Connect to the database
 */
export async function connectDatabase() {
  try {
    await prisma.$connect();
    console.log('✅ Database connected successfully');
  } catch (error) {
    console.error('❌ Database connection failed:', error);
    process.exit(1);
  }
}

/**
 * Disconnect from the database
 */
export async function disconnectDatabase() {
  await prisma.$disconnect();
  console.log('Database disconnected');
}

/**
 * Health check for database connection
 */
export async function checkDatabaseHealth(): Promise<boolean> {
  try {
    await prisma.$queryRaw`SELECT 1`;
    return true;
  } catch (error) {
    console.error('Database health check failed:', error);
    return false;
  }
}

export default prisma;