<?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 Tests\Unit\Services\Servers;

use Mockery as m;
use Tests\TestCase;
use Pterodactyl\Models\Server;
use Pterodactyl\Models\Location;
use Pterodactyl\Services\Servers\EnvironmentService;
use Pterodactyl\Contracts\Repository\ServerRepositoryInterface;

class EnvironmentServiceTest extends TestCase
{
    /**
     * @var \Pterodactyl\Contracts\Repository\ServerRepositoryInterface
     */
    protected $repository;

    /**
     * @var \Pterodactyl\Services\Servers\EnvironmentService
     */
    protected $service;

    /**
     * @var \Pterodactyl\Models\Server
     */
    protected $server;

    /**
     * Setup tests.
     */
    public function setUp()
    {
        parent::setUp();

        $this->repository = m::mock(ServerRepositoryInterface::class);
        $this->server = factory(Server::class)->make([
            'location' => factory(Location::class)->make(),
        ]);

        $this->service = new EnvironmentService($this->repository);
    }

    /**
     * Test that set environment key function returns an instance of the class.
     */
    public function testSettingEnvironmentKeyShouldReturnInstanceOfSelf()
    {
        $instance = $this->service->setEnvironmentKey('TEST_KEY', function () {
            return true;
        });

        $this->assertInstanceOf(EnvironmentService::class, $instance);
    }

    /**
     * Test that environment defaults are returned by the process function.
     */
    public function testProcessShouldReturnDefaultEnvironmentVariablesForAServer()
    {
        $this->repository->shouldReceive('getVariablesWithValues')->with($this->server->id)->once()->andReturn([
            'TEST_VARIABLE' => 'Test Variable',
        ]);

        $response = $this->service->process($this->server);

        $this->assertEquals(count(EnvironmentService::ENVIRONMENT_CASTS) + 1, count($response), 'Assert response contains correct amount of items.');
        $this->assertTrue(is_array($response), 'Assert that response is an array.');

        $this->assertArrayHasKey('TEST_VARIABLE', $response);
        $this->assertEquals('Test Variable', $response['TEST_VARIABLE']);

        foreach (EnvironmentService::ENVIRONMENT_CASTS as $key => $value) {
            $this->assertArrayHasKey($key, $response);
            $this->assertEquals(object_get($this->server, $value), $response[$key]);
        }
    }

    /**
     * Test that variables included at run-time are also included.
     */
    public function testProcessShouldReturnKeySetAtRuntime()
    {
        $this->repository->shouldReceive('getVariablesWithValues')->with($this->server->id)->once()->andReturn([]);

        $response = $this->service->setEnvironmentKey('TEST_VARIABLE', function ($server) {
            return $server->uuidShort;
        })->process($this->server);

        $this->assertTrue(is_array($response), 'Assert response is an array.');
        $this->assertArrayHasKey('TEST_VARIABLE', $response);
        $this->assertEquals($this->server->uuidShort, $response['TEST_VARIABLE']);
    }

    /**
     * Test that duplicate variables provided at run-time override the defaults.
     */
    public function testProcessShouldAllowOverwritingDefaultVariablesWithRuntimeProvided()
    {
        $this->repository->shouldReceive('getVariablesWithValues')->with($this->server->id)->once()->andReturn([]);

        $response = $this->service->setEnvironmentKey('P_SERVER_UUID', function ($server) {
            return 'overwritten';
        })->process($this->server);

        $this->assertTrue(is_array($response), 'Assert response is an array.');
        $this->assertArrayHasKey('P_SERVER_UUID', $response);
        $this->assertEquals('overwritten', $response['P_SERVER_UUID']);
    }

    /**
     * Test that function can run when an ID is provided rather than a server model.
     */
    public function testProcessShouldAcceptAnIntegerInPlaceOfAServerModel()
    {
        $this->repository->shouldReceive('find')->with($this->server->id)->once()->andReturn($this->server);
        $this->repository->shouldReceive('getVariablesWithValues')->with($this->server->id)->once()->andReturn([]);

        $response = $this->service->process($this->server->id);

        $this->assertTrue(is_array($response), 'Assert that response is an array.');
    }

    /**
     * Test that an exception is thrown when no model or valid ID is provided.
     *
     * @expectedException \InvalidArgumentException
     */
    public function testProcessShouldThrowExceptionIfInvalidServerIsProvided()
    {
        $this->service->process('abcd');
    }
}