import { PrismaPg } from '@prisma/adapter-pg';

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

const connectionString = process.env.DATABASE_URL;

if (!connectionString) {
  throw new Error('DATABASE_URL is not set');
}

// Next.js hot-reloads modules in development; without this the dev server
// would open a new pool on every edit until Postgres refuses connections.
const globalForPrisma = globalThis as unknown as { prisma?: PrismaClient };

export const prisma =
  globalForPrisma.prisma ?? new PrismaClient({ adapter: new PrismaPg({ connectionString }) });

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