Nest & Egg management working through the ACP now.

app/Services/Eggs/Variables/VariableCreationService.php

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+<?php
+/**
+ * Pterodactyl - Panel
+ * Copyright (c) 2015 - 2017 Dane Everitt <dane@daneeveritt.com>.
+ *
+ * This software is licensed under the terms of the MIT license.
+ * https://opensource.org/licenses/MIT
+ */
+
+namespace Pterodactyl\Services\Eggs\Variables;
+
+use Pterodactyl\Models\EggVariable;
+use Pterodactyl\Contracts\Repository\EggRepositoryInterface;
+use Pterodactyl\Contracts\Repository\EggVariableRepositoryInterface;
+use Pterodactyl\Exceptions\Service\Egg\Variable\ReservedVariableNameException;
+
+class VariableCreationService
+{
+    /**
+     * @var \Pterodactyl\Contracts\Repository\EggRepositoryInterface
+     */
+    protected $eggRepository;
+
+    /**
+     * @var \Pterodactyl\Contracts\Repository\EggVariableRepositoryInterface
+     */
+    protected $variableRepository;
+
+    /**
+     * VariableCreationService constructor.
+     *
+     * @param \Pterodactyl\Contracts\Repository\EggRepositoryInterface         $eggRepository
+     * @param \Pterodactyl\Contracts\Repository\EggVariableRepositoryInterface $variableRepository
+     */
+    public function __construct(
+        EggRepositoryInterface $eggRepository,
+        EggVariableRepositoryInterface $variableRepository
+    ) {
+        $this->eggRepository = $eggRepository;
+        $this->variableRepository = $variableRepository;
+    }
+
+    /**
+     * Create a new variable for a given Egg.
+     *
+     * @param int   $egg
+     * @param array $data
+     * @return \Pterodactyl\Models\EggVariable
+     *
+     * @throws \Pterodactyl\Exceptions\Model\DataValidationException
+     * @throws \Pterodactyl\Exceptions\Service\Egg\Variable\ReservedVariableNameException
+     */
+    public function handle(int $egg, array $data): EggVariable
+    {
+        if (in_array(strtoupper(array_get($data, 'env_variable')), explode(',', EggVariable::RESERVED_ENV_NAMES))) {
+            throw new ReservedVariableNameException(sprintf(
+                'Cannot use the protected name %s for this environment variable.',
+                array_get($data, 'env_variable')
+            ));
+        }
+
+        $options = array_get($data, 'options', []);
+
+        return $this->variableRepository->create(array_merge([
+            'egg_id' => $egg,
+            'user_viewable' => in_array('user_viewable', $options),
+            'user_editable' => in_array('user_editable', $options),
+        ], $data));
+    }
+}

app/Services/Eggs/Variables/VariableUpdateService.php

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+<?php
+/**
+ * Pterodactyl - Panel
+ * Copyright (c) 2015 - 2017 Dane Everitt <dane@daneeveritt.com>.
+ *
+ * This software is licensed under the terms of the MIT license.
+ * https://opensource.org/licenses/MIT
+ */
+
+namespace Pterodactyl\Services\Eggs\Variables;
+
+use Pterodactyl\Models\EggVariable;
+use Pterodactyl\Exceptions\DisplayException;
+use Pterodactyl\Contracts\Repository\EggVariableRepositoryInterface;
+use Pterodactyl\Exceptions\Service\Egg\Variable\ReservedVariableNameException;
+
+class VariableUpdateService
+{
+    /**
+     * @var \Pterodactyl\Contracts\Repository\EggVariableRepositoryInterface
+     */
+    protected $repository;
+
+    /**
+     * VariableUpdateService constructor.
+     *
+     * @param \Pterodactyl\Contracts\Repository\EggVariableRepositoryInterface $repository
+     */
+    public function __construct(EggVariableRepositoryInterface $repository)
+    {
+        $this->repository = $repository;
+    }
+
+    /**
+     * Update a specific egg variable.
+     *
+     * @param int|\Pterodactyl\Models\EggVariable $variable
+     * @param array                               $data
+     * @return mixed
+     *
+     * @throws \Pterodactyl\Exceptions\DisplayException
+     * @throws \Pterodactyl\Exceptions\Model\DataValidationException
+     * @throws \Pterodactyl\Exceptions\Repository\RecordNotFoundException
+     * @throws \Pterodactyl\Exceptions\Service\Egg\Variable\ReservedVariableNameException
+     */
+    public function handle($variable, array $data)
+    {
+        if (! $variable instanceof EggVariable) {
+            $variable = $this->repository->find($variable);
+        }
+
+        if (! is_null(array_get($data, 'env_variable'))) {
+            if (in_array(strtoupper(array_get($data, 'env_variable')), explode(',', EggVariable::RESERVED_ENV_NAMES))) {
+                throw new ReservedVariableNameException(trans('exceptions.service.variables.reserved_name', [
+                    'name' => array_get($data, 'env_variable'),
+                ]));
+            }
+
+            $search = $this->repository->withColumns('id')->findCountWhere([
+                ['env_variable', '=', array_get($data, 'env_variable')],
+                ['egg_id', '=', $variable->egg_id],
+                ['id', '!=', $variable->id],
+            ]);
+
+            if ($search > 0) {
+                throw new DisplayException(trans('exceptions.service.variables.env_not_unique', [
+                    'name' => array_get($data, 'env_variable'),
+                ]));
+            }
+        }
+
+        $options = array_get($data, 'options', []);
+
+        return $this->repository->withoutFresh()->update($variable->id, array_merge($data, [
+            'user_viewable' => in_array('user_viewable', $options),
+            'user_editable' => in_array('user_editable', $options),
+        ]));
+    }
+}