Refactor database access by introducing prisma.lambda.service for centralized PrismaClient usage across modules. Update imports in various handlers and services to utilize the new service, ensuring consistent database interactions and improved maintainability.

src/common/database/prisma.lambda.service.ts

@@ -0,0 +1,22 @@
+import { PrismaClient } from '@prisma/client';
+import { PrismaPg } from '@prisma/adapter-pg';
+
+const adapter = new PrismaPg({
+  connectionString: process.env.DATABASE_URL!,
+});
+
+let prisma: PrismaClient;
+
+if (!(global as any).prisma) {
+  (global as any).prisma = new PrismaClient({
+    adapter,
+    log:
+      process.env.NODE_ENV === 'dev'
+        ? ['query', 'info', 'warn', 'error']
+        : ['error'],
+  });
+}
+
+prisma = (global as any).prisma;
+
+export const prismaClient = prisma;

src/common/database/prisma.module.ts

@@ -1,5 +1,5 @@
 import { Global, Module } from '@nestjs/common';
-import { PrismaService } from './prisma.service';
+import { PrismaService } from './prisma.lambda.service';
 
 @Global()
 @Module({

src/common/database/prisma.service.ts

@@ -1,17 +1,8 @@
-import { Injectable, OnModuleInit, OnModuleDestroy, INestApplication } from '@nestjs/common';
+import { Injectable, OnModuleInit, OnModuleDestroy } from '@nestjs/common';
 import { PrismaClient } from '@prisma/client';
-import { PrismaPg } from '@prisma/adapter-pg';
 
 @Injectable()
 export class PrismaService extends PrismaClient implements OnModuleInit, OnModuleDestroy {
-  constructor() {
-    const adapter = new PrismaPg({ connectionString: process.env.DATABASE_URL });
-    super({
-      adapter,
-      log: process.env.NODE_ENV === 'dev' ? ['query', 'info', 'warn', 'error'] : ['error'],
-    });
-  }
-
   async onModuleInit() {
     await this.$connect();
   }
@@ -19,10 +10,4 @@ export class PrismaService extends PrismaClient implements OnModuleInit, OnModul
   async onModuleDestroy() {
     await this.$disconnect();
   }
-
-  async enableShutdownHooks(app: INestApplication) {
-    process.on('beforeExit', async () => {
-      await app.close();
-    });
-  }
-}
+}