Add subuser deletion service

app/Contracts/Repository/SubuserRepositoryInterface.php

@@ -26,4 +26,13 @@ namespace Pterodactyl\Contracts\Repository;
 
 interface SubuserRepositoryInterface extends RepositoryInterface
 {
+    /**
+     * Find a subuser and return with server and permissions relationships.
+     *
+     * @param int $id
+     * @return \Illuminate\Database\Eloquent\Collection
+     *
+     * @throws \Pterodactyl\Exceptions\Repository\RecordNotFoundException
+     */
+    public function getWithServerAndPermissions($id);
 }

app/Repositories/Eloquent/SubuserRepository.php

@@ -25,7 +25,9 @@
 namespace Pterodactyl\Repositories\Eloquent;
 
 use Pterodactyl\Contracts\Repository\SubuserRepositoryInterface;
+use Pterodactyl\Exceptions\Repository\RecordNotFoundException;
 use Pterodactyl\Models\Subuser;
+use Webmozart\Assert\Assert;
 
 class SubuserRepository extends EloquentRepository implements SubuserRepositoryInterface
 {
@@ -36,4 +38,19 @@ class SubuserRepository extends EloquentRepository implements SubuserRepositoryI
     {
         return Subuser::class;
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getWithServerAndPermissions($id)
+    {
+        Assert::numeric($id, 'First argument passed to getWithServerAndPermissions must be numeric, received %s.');
+
+        $instance = $this->getBuilder()->with(['server', 'permission'])->find($id, $this->getColumns());
+        if (! $instance) {
+            throw new RecordNotFoundException;
+        }
+
+        return $instance;
+    }
 }

app/Services/Subusers/SubuserCreationService.php

@@ -177,6 +177,7 @@ class SubuserCreationService
 
             return $subuser;
         } catch (RequestException $exception) {
+            $this->connection->rollBack();
             $response = $exception->getResponse();
             $this->writer->warning($exception);
 

app/Services/Subusers/SubuserDeletionService.php

@@ -0,0 +1,108 @@
+<?php
+/*
+ * Pterodactyl - Panel
+ * Copyright (c) 2015 - 2017 Dane Everitt <dane@daneeveritt.com>.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+namespace Pterodactyl\Services\Subusers;
+
+use Illuminate\Log\Writer;
+use GuzzleHttp\Exception\RequestException;
+use Illuminate\Database\ConnectionInterface;
+use Pterodactyl\Exceptions\DisplayException;
+use Pterodactyl\Contracts\Repository\SubuserRepositoryInterface;
+use Pterodactyl\Contracts\Repository\Daemon\ServerRepositoryInterface as DaemonServerRepositoryInterface;
+
+class SubuserDeletionService
+{
+    /**
+     * @var \Illuminate\Database\ConnectionInterface
+     */
+    protected $connection;
+
+    /**
+     * @var \Pterodactyl\Contracts\Repository\Daemon\ServerRepositoryInterface
+     */
+    protected $daemonRepository;
+
+    /**
+     * @var \Pterodactyl\Contracts\Repository\SubuserRepositoryInterface
+     */
+    protected $repository;
+
+    /**
+     * @var \Illuminate\Log\Writer
+     */
+    protected $writer;
+
+    /**
+     * SubuserDeletionService constructor.
+     *
+     * @param \Illuminate\Database\ConnectionInterface                           $connection
+     * @param \Pterodactyl\Contracts\Repository\Daemon\ServerRepositoryInterface $daemonRepository
+     * @param \Pterodactyl\Contracts\Repository\SubuserRepositoryInterface       $repository
+     * @param \Illuminate\Log\Writer                                             $writer
+     */
+    public function __construct(
+        ConnectionInterface $connection,
+        DaemonServerRepositoryInterface $daemonRepository,
+        SubuserRepositoryInterface $repository,
+        Writer $writer
+    ) {
+        $this->connection = $connection;
+        $this->daemonRepository = $daemonRepository;
+        $this->repository = $repository;
+        $this->writer = $writer;
+    }
+
+    /**
+     * Delete a subuser and their associated permissions from the Panel and Daemon.
+     *
+     * @param int $subuser
+     * @return int|null
+     *
+     * @throws \Pterodactyl\Exceptions\DisplayException
+     * @throws \Pterodactyl\Exceptions\Repository\RecordNotFoundException
+     */
+    public function handle($subuser)
+    {
+        $subuser = $this->repository->getWithServerAndPermissions($subuser);
+
+        $this->connection->beginTransaction();
+        $response = $this->repository->delete($subuser->id);
+
+        try {
+            $this->daemonRepository->setNode($subuser->server->node_id)->setAccessServer($subuser->server->uuid)
+                ->setSubuserKey($subuser->daemonSecret, []);
+            $this->connection->commit();
+
+            return $response;
+        } catch (RequestException $exception) {
+            $this->connection->rollBack();
+            $response = $exception->getResponse();
+            $this->writer->warning($exception);
+
+            throw new DisplayException(trans('admin/exceptions.daemon_connection_failed', [
+                'code' => is_null($response) ? 'E_CONN_REFUSED' : $response->getStatusCode(),
+            ]));
+        }
+    }
+}