Endpoint for user creation added

backend/classes/controller/UserPostController.php

@@ -0,0 +1,54 @@
+<?php
+
+declare(strict_types=1);
+
+final class UserPostController extends AbstractController
+{
+    protected string $route = '/api/v1/user';
+    protected array $mandatoryAttributes = [
+        'username',
+        'password',
+        'email',
+        'jabberAddress',
+    ];
+
+    public function handle(): void
+    {
+        parent::handle();
+
+        if ($this->response->getStatus() !== ServerStatus::OK) {
+            return;
+        }
+
+        $json = json_decode($this->requestBody);
+
+        try {
+            $user = new User();
+
+            $user->setUsername($json->username);
+            $user->setPassword(Password::GetHash($json->password));
+            $user->setEmail($json->email);
+            $user->setJabberAddress($json->jabberAddress);
+            $user->Save();
+
+            $this->response = new ApiJsonResponse();
+            $this->response->setParameter('userId', $user->getUserId());
+        } catch (DatabaseException $e) {
+            $this->response = new ApiJsonResponse();
+            $this->response->setParameter('success', false);
+            $this->response->setMessage($e->getMessage());
+
+            switch ($e->getCode()) {
+                case DatabaseException::CONNECTION_FAILED:
+                    $this->response->setStatus(ServerStatus::INTERNAL_ERROR);
+                    break;
+                default:
+                    $this->response->setStatus(ServerStatus::INTERNAL_ERROR);
+            }
+        } catch (Throwable $e) {
+            $this->response = new ApiJsonResponse(ServerStatus::BAD_REQUEST);
+            $this->response->setParameter('success', false);
+            $this->response->setMessage($e->getMessage());
+        }
+    }
+}