<?php

namespace app\components\route;

use app\components\language\LanguageHelper;
use yii\base\InvalidConfigException;
use yii\base\Object;
use yii\web\UrlRuleInterface;

class PropUrlRule extends Object implements UrlRuleInterface
{
    const PREFIX = 'prop/';

    const MODE_SERVER = 'server';
    const MODE_CLIENT = 'client';
    const MODE_ESCAPED_FRAGMENT = 'escapedFragment';

    public $route = 'prop/view';

    public function createUrl($manager, $route, $params)
    {
        if ($route === $this->route) {
            if (empty($params['alias'])) {
                throw new InvalidConfigException('Ticket alias can not be empty');
            }

            $mode = isset($params['mode']) ? $params['mode'] : null;
            $lang = (isset($params['language']) && isset(LanguageHelper::$db2jsMap[$params['language']]))
                ? LanguageHelper::$db2jsMap[$params['language']] : null;
            $result = ($lang ? $lang . '/' : '') . self::PREFIX . $params['alias'];
            switch ($mode) {
                case self::MODE_SERVER:
                    // prop/2342-15-Kvitnia-Street-1-Ternopil
                    // uk/prop/2342-15-Kvitnia-Street-1-Ternopil
                    return $result;
                case self::MODE_CLIENT:

                    // #!/prop/2342-15-Kvitnia-Street-1-Ternopil
                    // #!/uk/prop/2342-15-Kvitnia-Street-1-Ternopil
                    return '#!/' . $result;

                case self::MODE_ESCAPED_FRAGMENT:
                    // ?_escaped_fragment_=/prop/2342-15-Kvitnia-Street-1-Ternopil
                    // ?_escaped_fragment_=/uk/prop/2342-15-Kvitnia-Street-1-Ternopil
                    return '?_escaped_fragment_=/' . $result;

                default:
                    throw new InvalidConfigException('Wrong mode "' . $mode . '"');
            }
        }
        return false;
    }

    /**
     * URL patterns handled by rule:
     * - ?_escaped_fragment_=/prop/2342-15-Kvitnia-Street-1-Ternopil
     * - ?_escaped_fragment_=/uk/prop/2342-15-Kvitnia-Street-1-Ternopil
     *
     * @param \yii\web\UrlManager $manager
     * @param \yii\web\Request    $request
     *
     * @return array|bool
     * @throws \yii\base\InvalidConfigException
     */
    public function parseRequest($manager, $request)
    {
        $params = ['language' => null, 'id' => null, 'alias' => null, 'mode' => self::MODE_SERVER];
        $query = $request->getQueryParams();

        if ($query && isset($query['_escaped_fragment_']) && 1 === count($query)) {
            $pathInfo = $query['_escaped_fragment_'];
            $pathInfo = ('/' === $pathInfo[0]) ? substr($pathInfo, 1) : $pathInfo;
            $params['mode'] = self::MODE_ESCAPED_FRAGMENT;
        } else {
            return false;
        }

        $prefixLen = strlen(self::PREFIX);
        if (strlen($pathInfo) < $prefixLen) {
            return false;
        }

        // handle and cut lang prefix "uk/"
        if ('/' === $pathInfo[2] && ($lang = substr($pathInfo, 0, 2)) && isset(LanguageHelper::$js2dbMap[$lang])) {
            $params['language'] = LanguageHelper::$js2dbMap[$lang];
            $pathInfo = substr($pathInfo, 3);
        }

        // handle 'prop/' prefix
        if (self::PREFIX === substr($pathInfo, 0, $prefixLen)) {
            if (false === ($dashIdx = strpos($pathInfo, '-', $prefixLen))) {
                $dashIdx = strlen($pathInfo);
            }
            $params['id'] = substr($pathInfo, $prefixLen, $dashIdx - $prefixLen);
            if (is_numeric($params['id'])) {
                $params['alias'] = substr($pathInfo, $prefixLen);
                return [$this->route, $params];
            }

        }

        return false;
    }

//    /**
//     * URL patterns handled by rule:
//     * - prop/2342-15-Kvitnia-Street-1-Ternopil
//     * - uk/prop/2342-15-Kvitnia-Street-1-Ternopil
//     * - ?_escaped_fragment_=/prop/2342-15-Kvitnia-Street-1-Ternopil
//     * - ?_escaped_fragment_=/uk/prop/2342-15-Kvitnia-Street-1-Ternopil
//     *
//     * @param \yii\web\UrlManager $manager
//     * @param \yii\web\Request    $request
//     *
//     * @return array|bool
//     * @throws \yii\base\InvalidConfigException
//     */
//    public function parseRequest($manager, $request)
//    {
//        $params = ['language' => null, 'id' => null, 'alias' => null, 'mode' => self::MODE_SERVER];
//        $pathInfo = $request->getPathInfo();
//        $query = $request->getQueryParams();
//
//        if ($pathInfo && $query || empty($pathInfo) && empty($query)) {
//            return false;
//        }
//
//        $prefixLen = strlen(self::PREFIX);
//
//        if ('' === $pathInfo && isset($query['_escaped_fragment_']) && 1 === count($query)) {
//            $pathInfo = $query['_escaped_fragment_'];
//            $pathInfo = ('/' === $pathInfo[0]) ? substr($pathInfo, 1) : $pathInfo;
//            $params['mode'] = self::MODE_ESCAPED_FRAGMENT;
//        }
//
//        if (strlen($pathInfo) < $prefixLen) {
//            return false;
//        }
//
//        // handle and cut lang prefix "uk/"
//        if ('/' === $pathInfo[2] && ($lang = substr($pathInfo, 0, 2)) && isset(LanguageHelper::$js2dbMap[$lang])) {
//            $params['language'] = LanguageHelper::$js2dbMap[$lang];
//            $pathInfo = substr($pathInfo, 3);
//        }
//
//        // handle 'prop/' prefix
//        if (self::PREFIX === substr($pathInfo, 0, $prefixLen)) {
//            $dashIdx = strpos($pathInfo, '-', $prefixLen);
//            if (false !== $dashIdx) {
//                $params['id'] = substr($pathInfo, $prefixLen, $dashIdx - $prefixLen);
//                if (is_numeric($params['id'])) {
//                    $params['alias'] = substr($pathInfo, $prefixLen);
//                    return [$this->route, $params];
//                }
//            }
//        }
//
//        return false;
//    }
}