UrlBuilder.php

<?php

/**
 * Copyright 2016 LINE Corporation
 *
 * LINE Corporation licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */

namespace LINE\LINEBot\KitchenSink\EventHandler\MessageHandler\Util;

class UrlBuilder
{
    public static function buildUrl(\Psr\Http\Message\RequestInterface $req, array $paths)
    {
        // NOTE: You should configure $baseUri according to your environment
        // Perhaps, it is prefer to use $_SERVER['HTTP_HOST'], $_SERVER['HTTP_X_FORWARDED_HOST'] or etc
        // $baseUri = "{$req->getUri()->getScheme()}://{$req->getUri()->getHost()}";
        $baseUri = "{$req->getHeader('X-Forwarded-Scheme')[0]}://{$req->getHeader('X-Forwarded-Host')[0]}";
        foreach ($paths as $path) {
            $baseUri .= '/' . urlencode($path);
        }
        return $baseUri;
    }
}