Add Admin module and entity

backend/src/modules/admin/admin.service.ts

@@ -0,0 +1,34 @@
+import { Injectable, Logger } from '@nestjs/common';
+import { InjectRepository } from '@nestjs/typeorm';
+import { Repository } from 'typeorm';
+import { Admin } from 'libs/database/admin.entity';
+
+@Injectable()
+export class AdminService {
+    private readonly logger: Logger = new Logger(AdminService.name);
+    constructor(@InjectRepository(Admin) private adminRepository: Repository<Admin>) {}
+
+    async getAdmins() {
+        try {
+            this.logger.debug(`[admin.getAdmins]`);
+            const admins = await this.adminRepository.find();
+            return admins;
+        } catch (error) {
+            this.logger.log(`[getAdmin] ${JSON.stringify({ error })}`);
+        }
+    }
+    async checkIsAdmin(id: string) {
+        try {
+            this.logger.debug(`[admin.checkIsAdmin]`);
+            const admins = await this.adminRepository.findOne({
+                where: { id: id },
+            });
+            if (!admins) {
+                return false;
+            }
+            return true;
+        } catch (error) {
+            this.logger.log(`[checkIsAdmin] ${JSON.stringify({ error })}`);
+        }
+    }
+}