Можно забанить и разбанить разными endpoint'ами, хз насколько это надо

backend/libs/database/user.entity.ts

@@ -11,4 +11,7 @@ export class User {
 
     @Column({ nullable: true })
     public user_name: string;
+
+    @Column({ nullable: false , default: false})
+    public banned: boolean;
 }

backend/src/modules/user/user.controller.ts

@@ -1,4 +1,4 @@
-import { Body, Controller, Post } from '@nestjs/common';
+import { Body, Controller, Post, Put, Param } from '@nestjs/common';
 import { ApiOperation, ApiTags } from '@nestjs/swagger';
 import { IGetUser } from './user.dto';
 import { UserService } from './user.service';
@@ -15,4 +15,13 @@ export class UserController {
     async getUser(@Body() data: IGetUser) {
         return await this.userService.getUser(data);
     }
+    @Put('ban/:id')
+    async banUser(@Param('id') id: string) {
+        return await this.userService.banUser(id);
+    }
+    @Put('deBan/:id')
+    async deBanUser(@Param('id') id: string) {
+        return await this.userService.deBanUser(id);
+    }
+
 }

backend/src/modules/user/user.service.ts

@@ -24,4 +24,41 @@ export class UserService {
             this.logger.log(`[user.getUser] ${JSON.stringify({ error })}`);
         }
     }
+     async banUser(id: string){
+        try {
+            this.logger.debug(`[user.banUser] id: ${JSON.stringify(id)}`);
+            let user = await this.userRepository.findOne({
+                where: { id: id },
+            });
+            if(user){
+                user.banned = true;
+                await this.userRepository.save(user);
+                return user;
+            }
+            
+            user = await this.userRepository.save({ id: id, banned: true  });
+            return user;
+        } catch (error) {
+            this.logger.log(`[user.banUser] ${JSON.stringify({ error })}`);
+        }
+     }
+
+     async deBanUser(id: string){
+        try {
+            this.logger.debug(`[user.deBanUser] id: ${JSON.stringify(id)}`);
+            let user = await this.userRepository.findOne({
+                where: { id: id },
+            });
+            if(user){
+                user.banned = false;
+                await this.userRepository.save(user);
+                return user;
+            }
+            
+            user = await this.userRepository.save({ id: id, banned: false  });
+            return user;
+        } catch (error) {
+            this.logger.log(`[user.deBanUser] ${JSON.stringify({ error })}`);
+        }
+     }
 }