feat: add delete current user account use case

src/modules/auth/auth.controller.ts

@@ -1,6 +1,7 @@
 import {
   Body,
   Controller,
+  Delete,
   Get,
   HttpCode,
   HttpStatus,
@@ -57,6 +58,7 @@ import {
   UpdateUserCommand,
   VerifyEmailCommand,
 } from './use-cases'
+import { DeleteCurrentAccountCommand } from './use-cases/delete-current-user-account-use-case'
 
 @ApiTags('Auth')
 @Controller('auth')
@@ -94,6 +96,23 @@ export class AuthController {
     return await this.commandBus.execute(new UpdateUserCommand(userId, body, files?.avatar?.[0]))
   }
 
+  @ApiOperation({
+    description:
+      'Delete current user account. All the user data will be deleted forever. This action can not be undone',
+    summary: 'Delete current user account',
+  })
+  @ApiUnauthorizedResponse({ description: 'Not logged in' })
+  @ApiBadRequestResponse({ description: 'User not found' })
+  @ApiBearerAuth()
+  @UseGuards(JwtAuthGuard)
+  @HttpCode(HttpStatus.NO_CONTENT)
+  @Delete('me')
+  async deleteUserAccount(@Request() req): Promise<UserEntity> {
+    const userId = req.user.id
+
+    return await this.commandBus.execute(new DeleteCurrentAccountCommand(userId))
+  }
+
   @ApiOperation({
     description: 'Sign in using email and password. Must have an account to do so.',
     summary: 'Sign in using email and password. Must have an account to do so.',

src/modules/auth/auth.module.ts

@@ -19,10 +19,12 @@ import {
   VerifyEmailHandler,
   UpdateUserHandler,
 } from './use-cases'
+import { DeleteCurrentUserAccountHandler } from './use-cases/delete-current-user-account-use-case'
 
 const commandHandlers = [
   CreateUserHandler,
   GetCurrentUserDataHandler,
+  DeleteCurrentUserAccountHandler,
   LogoutHandler,
   RefreshTokenHandler,
   ResendVerificationEmailHandler,

src/modules/auth/use-cases/delete-current-user-account-use-case.ts

@@ -0,0 +1,18 @@
+import { CommandHandler, ICommandHandler } from '@nestjs/cqrs'
+
+import { UsersRepository } from '../../users/infrastructure/users.repository'
+
+export class DeleteCurrentAccountCommand {
+  constructor(public readonly userId: string) {}
+}
+
+@CommandHandler(DeleteCurrentAccountCommand)
+export class DeleteCurrentUserAccountHandler
+  implements ICommandHandler<DeleteCurrentAccountCommand>
+{
+  constructor(private readonly usersRepository: UsersRepository) {}
+
+  async execute(command: DeleteCurrentAccountCommand): Promise<boolean> {
+    return await this.usersRepository.deleteUserById(command.userId)
+  }
+}