<?php
/**
 * @copyright Copyright (c) 2020 Daniel Kesselberg <mail@danielkesselberg.de>
 *
 * @author Daniel Kesselberg <mail@danielkesselberg.de>
 *
 * @license GNU AGPL version 3 or any later version
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 */

namespace OCA\ServerInfo\Tests;

use OCA\ServerInfo\OperatingSystems\DefaultOs;
use PHPUnit\Framework\MockObject\MockObject;
use Test\TestCase;

/**
 * Class DefaultOsTest
 *
 * @package OCA\ServerInfo\Tests
 */
class DefaultOsTest extends TestCase {

	/** @var DefaultOs|MockObject */
	protected $os;

	protected function setUp(): void {
		parent::setUp(); // TODO: Change the autogenerated stub

		$this->os = $this->getMockBuilder(DefaultOs::class)
			->disableOriginalConstructor()
			->disableOriginalClone()
			->disableArgumentCloning()
			->disallowMockingUnknownTypes()
			->setMethods(['readContent', 'executeCommand'])
			->getMock();
	}

	public function testGetMemory(): void {
		$this->os->method('readContent')
			->with('/proc/meminfo')
			->willReturn(file_get_contents(__DIR__ . '/../data/meminfo'));

		$memory = $this->os->getMemory();

		$this->assertArrayHasKey('MemTotal', $memory);
		$this->assertArrayHasKey('MemFree', $memory);
		$this->assertArrayHasKey('MemAvailable', $memory);
		$this->assertArrayHasKey('SwapTotal', $memory);
		$this->assertArrayHasKey('SwapFree', $memory);

		$this->assertEquals(16330252 * 1024, $memory['MemTotal']);
		$this->assertEquals(2443908 * 1024, $memory['MemFree']);
		$this->assertEquals(7675276 * 1024, $memory['MemAvailable']);
		$this->assertEquals(999420 * 1024, $memory['SwapTotal']);
		$this->assertEquals(917756 * 1024, $memory['SwapFree']);
	}

	public function testGetCPUName(): void {
		$this->os->method('readContent')
			->with('/proc/cpuinfo')
			->willReturn(file_get_contents(__DIR__ . '/../data/cpuinfo'));

		$this->assertEquals('Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz (4 cores)', $this->os->getCPUName());
	}

	public function testGetUptime(): void {
		$this->os->method('readContent')
			->with('/proc/uptime')
			->willReturn(file_get_contents(__DIR__ . '/../data/uptime'));

		$this->assertEquals(13278, $this->os->getUptime());
	}

	public function testGetDiskInfo(): void {
		$this->os->method('executeCommand')
			->with('df -TP')
			->willReturn(file_get_contents(__DIR__ . '/../data/df_tp'));

		$disks = [
			[
				'device' => '/dev/mapper/homestead--vg-root',
				'fs' => 'ext4',
				'used' => 6354399232,
				'available' => 48456929280,
				'percent' => '12%',
				'mount' => '/',
			],
			[
				'device' => '/dev/mapper/homestead--vg-mysql--master',
				'fs' => 'ext4',
				'used' => 263385088,
				'available' => 63388057600,
				'percent' => '1%',
				'mount' => '/homestead-vg/master',
			],
			[
				'device' => 'vagrant',
				'fs' => 'vboxsf',
				'used' => 629587079168,
				'available' => 351531044864,
				'percent' => '65%',
				'mount' => '/vagrant',
			],
			[
				'device' => 'home_vagrant_code',
				'fs' => 'vboxsf',
				'used' => 629587079168,
				'available' => 351531044864,
				'percent' => '65%',
				'mount' => '/home/vagrant/code',
			],
		];

		$this->assertSame($disks, $this->os->getDiskInfo());
	}

	public function testGetDiskInfoNoCommandOutput(): void {
		$this->os->method('executeCommand')
			->with('df -TP')
			->willThrowException(new \RuntimeException('No output for command "df -TP"'));

		$this->assertSame([], $this->os->getDiskInfo());
	}

	public function testGetDiskInfoInvalidCommandOutput(): void {
		$this->os->method('executeCommand')
			->with('df -TP')
			->willReturn('invalid_data');

		$this->assertSame([], $this->os->getDiskInfo());
	}
}