ReadMeABook/src/lib/db.ts

/**
 * Component: Database Client
 * Documentation: documentation/backend/database.md
 */

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

// Prevent multiple instances of Prisma Client in development
const globalForPrisma = globalThis as unknown as {
  prisma: PrismaClient | undefined;
};

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;

// Graceful shutdown
process.on('beforeExit', async () => {
  await prisma.$disconnect();
});

export default prisma;