Added user service with basic methods

src/user/user.service.ts

@@ -0,0 +1,39 @@
+import {Injectable} from '@nestjs/common';
+import {InjectRepository} from '@nestjs/typeorm';
+import { Repository, UpdateResult } from 'typeorm';
+import {UserEntity as User, UserEntity} from './../entities';
+import { Pagination, PaginationOptionsInterface } from './../paginate';
+import { UserModel } from 'models';
+
+@Injectable()
+export class UserService {
+    constructor(@InjectRepository(User) private readonly userRepository: Repository<User>) {}
+
+    async paginate(options: PaginationOptionsInterface): Promise<Pagination<User>> {
+        const [results, total] = await this.userRepository.findAndCount({
+            take: options.take,
+            skip: options.page,
+        });
+
+        return new Pagination<User>({
+            results,
+            total,
+        });
+    }
+
+    async create(user: UserModel): Promise<User> {
+        return await this.userRepository.save(this.userRepository.create(user));
+    }
+
+    async update(user: UserEntity): Promise<UpdateResult> {
+        return await this.userRepository.update(user.id, user);
+    }
+
+    async findByEmail(email: string): Promise<User|null> {
+        return await this.userRepository.findOne({
+            where: {
+                email,
+            },
+        });
+    }
+}