Feature: Add example user pg repository

src/modules/users/users.module.ts

@@ -6,13 +6,14 @@ import { JwtStrategy } from './guards/strategy';
 import { User, UserSchema } from '@src/infrastructure';
 import { UsersRepository } from './users.repository';
 import { AuthModule } from '../auth/auth.module';
+import { UsersPGRepository } from './users.pg.repository';
 
 @Module({
   imports: [
     AuthModule,
     MongooseModule.forFeature([{ name: User.name, schema: UserSchema }]),
   ],
   controllers: [UsersController],
-  providers: [UsersService, UsersRepository, JwtStrategy],
+  providers: [UsersService, UsersRepository, UsersPGRepository, JwtStrategy],
 })
 export class UsersModule {}

src/modules/users/users.pg.repository.ts

@@ -0,0 +1,30 @@
+import { Injectable } from '@nestjs/common';
+import { PrismaService } from '../prisma/prisma.service';
+
+// TODO: Service class name will be changed after the naming convention is discussed later.
+@Injectable()
+export class UsersPGRepository {
+  constructor(private readonly prisma: PrismaService) {}
+  private defaultFolderName = '나중에 읽을 링크';
+
+  async findOrCreate(deviceToken: string) {
+    const user = await this.prisma.user.upsert({
+      where: {
+        deviceToken: deviceToken,
+      },
+      create: {
+        deviceToken: deviceToken,
+        folders: {
+          create: [
+            {
+              name: this.defaultFolderName,
+              type: 'default',
+            },
+          ],
+        },
+      },
+      update: {},
+    });
+    return user;
+  }
+}