User deletion now requires confirmation

ref #100

src/controllers/UserController.ts

@@ -1,7 +1,7 @@
 import { Authorized, Body, Delete, Get, JsonController, OnUndefined, Param, Post, Put, QueryParam } from 'routing-controllers';
 import { OpenAPI, ResponseSchema } from 'routing-controllers-openapi';
 import { getConnectionManager, Repository } from 'typeorm';
-import { UserIdsNotMatchingError, UsernameContainsIllegalCharacterError, UserNotFoundError } from '../errors/UserErrors';
+import { UserDeletionNotConfirmedError, UserIdsNotMatchingError, UsernameContainsIllegalCharacterError, UserNotFoundError } from '../errors/UserErrors';
 import { UserGroupNotFoundError } from '../errors/UserGroupErrors';
 import { CreateUser } from '../models/actions/create/CreateUser';
 import { UpdateUser } from '../models/actions/update/UpdateUser';
@@ -105,9 +105,11 @@ export class UserController {
 	@Authorized("USER:DELETE")
 	@ResponseSchema(ResponseUser)
 	@ResponseSchema(ResponseEmpty, { statusCode: 204 })
+	@ResponseSchema(UserDeletionNotConfirmedError, { statusCode: 406 })
 	@OnUndefined(204)
-	@OpenAPI({ description: 'Delete the user whose id you provided. <br> If there are any permissions directly granted to the user they will get deleted as well. <br> If no user with this id exists it will just return 204(no content).' })
+	@OpenAPI({ description: 'Delete the user whose id you provided. <br> You have to confirm your decision by providing the ?force=true query param. <br> If there are any permissions directly granted to the user they will get deleted as well. <br> If no user with this id exists it will just return 204(no content).' })
 	async remove(@Param("id") id: number, @QueryParam("force") force: boolean) {
+		if (!force) { throw new UserDeletionNotConfirmedError; }
 		let user = await this.userRepository.findOne({ id: id });
 		if (!user) { return null; }
 		const responseUser = await this.userRepository.findOne({ id: id }, { relations: ['permissions', 'groups', 'groups.permissions'] });;

src/errors/UserErrors.ts

@@ -59,4 +59,16 @@ export class UserIdsNotMatchingError extends NotAcceptableError {
 
 	@IsString()
 	message = "The ids don't match!! \n And if you wanted to change a user's id: This isn't allowed!"
+}
+
+/**
+ * Error to throw when two users' ids don't match.
+ * Usually occurs when a user tries to change a user's id.
+ */
+export class UserDeletionNotConfirmedError extends NotAcceptableError {
+	@IsString()
+	name = "UserDeletionNotConfirmedError"
+
+	@IsString()
+	message = "You are trying to delete a user! \n If you're sure about doing this: provide the ?force=true query param."
 }