init

src/modules/admin/admin.module.ts

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+import { Module } from '@nestjs/common';
+import { AdminService } from './admin.service';
+import { MikroOrmModule } from '@mikro-orm/nestjs';
+import { Admin } from './entities/user.entity';
+import { JwtModule } from '@nestjs/jwt';
+
+@Module({
+  providers: [AdminService],
+  controllers: [],
+  imports: [MikroOrmModule.forFeature([Admin]), JwtModule],
+  exports: [AdminService],
+})
+export class AdminModule {}

src/modules/admin/admin.service.ts

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+import { Injectable } from '@nestjs/common';
+import { InjectRepository } from '@mikro-orm/nestjs';
+import { EntityRepository } from '@mikro-orm/core';
+import { Admin } from './entities/user.entity';
+import { EntityManager } from '@mikro-orm/postgresql';
+
+@Injectable()
+export class AdminService {
+  constructor(
+    @InjectRepository(Admin)
+    private readonly adminRepository: EntityRepository<Admin>,
+    private readonly em: EntityManager,
+  ) {}
+
+  async findByPhone(phone: string): Promise<Admin | null> {
+    return this.adminRepository.findOne({ phone });
+  }
+
+  async findById(id: number): Promise<Admin | null> {
+    return this.adminRepository.findOne({ id });
+  }
+
+  async create(phone: string): Promise<Admin> {
+    const user = this.adminRepository.create({ phone });
+    await this.em.persistAndFlush(user);
+    return user;
+  }
+}

src/modules/admin/entities/user.entity.ts

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+import { Entity, PrimaryKey, Property, OptionalProps } from '@mikro-orm/core';
+
+@Entity({ tableName: 'admns' })
+export class Admin {
+  [OptionalProps]?: 'id' | 'createdAt' | 'updatedAt';
+
+  @PrimaryKey()
+  id!: number;
+
+  @Property({ nullable: true })
+  firstName?: string;
+
+  @Property({ nullable: true })
+  lastName?: string;
+
+  @Property({ unique: true })
+  phone!: string;
+
+  @Property({ defaultRaw: 'now()', columnType: 'timestamptz' })
+  createdAt: Date = new Date();
+
+  @Property({ onUpdate: () => new Date(), defaultRaw: 'now()', columnType: 'timestamptz' })
+  updatedAt: Date = new Date();
+}