feat: integrate Prisma for database management

src/app.module.ts

@@ -2,9 +2,10 @@ import { Module } from '@nestjs/common';
 import { AppController } from './app.controller';
 import { AppService } from './app.service';
 import { CategoriesModule } from './categories/categories.module';
+import { PrismaModule } from './prisma/prisma.module';
 
 @Module({
-  imports: [CategoriesModule],
+  imports: [PrismaModule, CategoriesModule],
   controllers: [AppController],
   providers: [AppService],
 })

src/main.ts

@@ -3,6 +3,6 @@ import { AppModule } from './app.module';
 
 async function bootstrap() {
   const app = await NestFactory.create(AppModule);
-  await app.listen(process.env.PORT ?? 3020);
+  await app.listen(process.env.PORT ?? 3000);
 }
 bootstrap();

src/prisma/prisma.module.ts

@@ -0,0 +1,9 @@
+import { Global, Module } from '@nestjs/common';
+import { PrismaService } from './prisma.service';
+
+@Global()
+@Module({
+  providers: [PrismaService],
+  exports: [PrismaService],
+})
+export class PrismaModule {}

src/prisma/prisma.service.ts

@@ -0,0 +1,9 @@
+import { Injectable, OnModuleInit } from '@nestjs/common';
+import { PrismaClient } from 'generated/prisma/client';
+
+@Injectable()
+export class PrismaService extends PrismaClient implements OnModuleInit {
+  async onModuleInit() {
+    await this.$connect();
+  }
+}