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

const globalForPrisma = globalThis as unknown as {
  prisma?: PrismaClient;
};

/** Shared Prisma singleton for Nest/API. Do not use against legacy staging DB. */
export function createPrismaClient(datasourceUrl?: string): PrismaClient {
  return new PrismaClient(
    datasourceUrl
      ? {
          datasources: {
            db: { url: datasourceUrl },
          },
        }
      : undefined,
  );
}

export const prisma = globalForPrisma.prisma ?? createPrismaClient();

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