<?php
/**
 * InstallController.php
 *
 * PHP version 7
 *
 * @category    Controllers
 * @package     App\Http\Controllers
 * @author      XE Developers <developers@xpressengine.com>
 * @copyright   2020 Copyright XEHub Corp. <https://www.xehub.io>
 * @license     http://www.gnu.org/licenses/lgpl-3.0-standalone.html LGPL
 * @link        https://xpressengine.io
 */

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Artisan;
use File;
use Lang;
use Symfony\Component\Yaml\Yaml;
use Illuminate\Contracts\Cookie\QueueingFactory as JarContract;

/**
 * Class InstallController
 *
 * @category    Controllers
 * @package     App\Http\Controllers
 * @author      XE Developers <developers@xpressengine.com>
 * @copyright   2020 Copyright XEHub Corp. <https://www.xehub.io>
 * @license     http://www.gnu.org/licenses/lgpl-3.0-standalone.html LGPL
 * @link        https://xpressengine.io
 */
class InstallController extends Controller
{
    /**
     * Show page for installation.
     *
     * @param Request $request request
     * @return \Illuminate\View\View
     */
    public function index(Request $request)
    {
        app()->setLocale($request->get('_l', app()->getLocale()));
        Lang::getLoader()->addNamespace('xe', resource_path('views/install/lang'));

        return view('install.index');
    }

    /**
     * Check system environment.
     *
     * @param Request $request request
     * @return \Illuminate\Http\JsonResponse
     */
    public function check(Request $request)
    {
        $result = false;
        $message = null;

        switch ($request->get('key')) {
            case "directoryPermission" :
                $paths = [
                    base_path('bootstrap/cache'),
                    base_path('config/' . env('APP_ENV', 'production')),
                    base_path('storage/'),
                ];

                $result = true;
                foreach ($paths as $path) {
                    if (!is_writable($path)) {
                        $result = false;
                        $message = 'Write permission required to "'.$path.'" directory ';
                        break;
                    }
                }
                break;

            case "phpVersion" :
                $phpVersion = 70000;
                $result = PHP_VERSION_ID < $phpVersion ? false : true;
                break;

            case 'pdo' :
                $result = extension_loaded('PDO') &&
                    (extension_loaded('pdo_mysql') || extension_loaded('pdo_cubrid'));
                break;

            case "curl" :
                $result = extension_loaded('curl');
                break;

            case "fileinfo" :
                $result = extension_loaded('fileinfo');
                break;

            case "gd" :
                $result = extension_loaded('gd') &&
                    function_exists('imagejpeg') &&
                    function_exists('imagepng') &&
                    function_exists('imagegif');
                break;

            case "mbstring" :
                $result = extension_loaded('mbstring');
                break;

            case "openssl" :
                $result = extension_loaded('openssl');
                break;

            case "zip" :
                $result = extension_loaded('zip');
                break;
        }

        return response()->json([
            'result' => $result,
            'message' => $message,
        ]);
    }

    /**
     * Do install the application.
     *
     * @param Request     $request request
     * @param JarContract $cookie  cookie
     * @return \Illuminate\Http\RedirectResponse|string
     * @throws \Exception
     */
    public function install(Request $request, JarContract $cookie)
    {
        if ($this->isInstalled() === true) {
            throw new \Exception('Already installed');
        }

        $url = $this->getUrl($request->get('web_url', ''));
        $validator = $this->getValidationFactory()->make(
            array_merge($request->all(), ['web_url' => $url]),
            [
                'admin_email' => 'required|email',
                'admin_password' => 'required|confirmed',
                'admin_password_confirmation' => 'required',
                'database_name' => 'required',
                'database_password' => 'required',
                'web_url' => 'url',
            ]
        );

        if ($validator->fails()) {
            return $this->back($validator->getMessageBag()->first());
        }

        $configPath = storage_path('app') . '/installConfig';

        $string = Yaml::dump([
            'site' => [
                'locale' => $request->get('locale') ?: 'ko',
                'url' => $url !== '' ? $url : 'http://localhost',
                'timezone' =>  $request->get('web_timezone') ?: 'Asia/Seoul',
            ],
            'admin' => [
                'email' => $request->get('admin_email'),
                'login_id' => $request->get('admin_login_id') ?: 'admin',
                'password' => $request->get('admin_password'),
                'display_name' => $request->get('admin_display_name') ?: 'admin',
            ],
            'database' => [
                'driver' => $request->get('database_driver') ?: 'mysql',
                'host' => $request->get('database_host') ?: 'localhost',
                'port' => $request->get('database_port') ?: '3306',
                'dbname' => $request->get('database_name'),
                'username' => $request->get('database_user_name') ?: 'root',
                'password' => $request->get('database_password'),
                'prefix' => $request->get('database_prefix') ?: 'xe',
            ],
        ]);

        File::put($configPath, $string);

        Artisan::call('xe:install', [
            '--config' => $configPath,
            '--no-interaction' => true,
        ]);

        File::delete($configPath);

        if (!empty($request->get('locale'))) {
            $cookie->queue($cookie->forever('locale', $request->get('locale')));
        }

        return redirect($request->root());
    }

    /**
     * Indicate if the application was installed
     *
     * @return bool
     */
    protected function isInstalled()
    {
        return file_exists(app()->getInstalledPath());
    }

    /**
     * 설치시 세션 아이디가 고정되지 않아 input 이나 error 를 넘겨줄수 없어
     * 스크립트로 메시지를 표시하고 페이지를 되돌림
     *
     * @param string|null $msg message
     * @return string
     */
    private function back($msg = null)
    {
        $alert = $msg ? 'alert("'.$msg.'");' : '';
        return sprintf('<script>%s history.back();</script>', $alert);
    }

    /**
     * 입력한 app 의 url 값에 프로토콜이 명시되지 않은 경우 http 로 지정
     *
     * @param string $url url with protocol
     * @return string
     */
    private function getUrl($url)
    {
        $url = trim($url, '/');
        if (!empty($url) && !preg_match('/^(http(s)?\:\/\/)/', $url)) {
            $url = 'http://' . $url;
        }

        return $url;
    }
}