<?php
/*
 * Copyright 2010 Google Inc.
 *
 * Licensed 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
 *
 *     http://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.
 */

/**
 * Do-nothing authentication implementation, use this if you want to make un-authenticated calls
 * @author Chris Chabot <chabotc@google.com>
 * @author Chirag Shah <chirags@google.com>
 */
class Google_AuthNone extends Google_Auth
{
    public $key = null;

    public function __construct()
    {
        global $apiConfig;
        if (!empty($apiConfig['developer_key'])) {
            $this->setDeveloperKey($apiConfig['developer_key']);
        }
    }

    public function setDeveloperKey($key)
    {
        $this->key = $key;
    }

    public function authenticate($service)
    {/*noop*/
    }

    public function setAccessToken($accessToken)
    {/* noop*/
    }

    public function getAccessToken()
    {
        return null;
    }

    public function createAuthUrl($scope)
    {
        return null;
    }

    public function refreshToken($refreshToken)
    {/* noop*/
    }

    public function revokeToken()
    {/* noop*/
    }

    public function sign(Google_HttpRequest $request)
    {
        if ($this->key) {
            $request->setUrl(
                $request->getUrl() . ((strpos($request->getUrl(), '?') === false) ? '?' : '&')
                . 'key=' . urlencode($this->key)
            );
        }

        return $request;
    }
}