<?php
if (! defined('IS_INITPHP'))
    exit('Access Denied!');
require_once ("qiniu/rs.php");

/**
 * 七牛的类封装，包括上传的授权token获取，私有资源URL的获取以及文件上传
 * 
 * @author Chen Deben
 * @copyright Meitu
 */
class qiniuInit {

    private $APP_ACCESS_KEY;

    private $APP_SECRET_KEY;

    private $DOMAIN;

    private $BUCKET;

    private $CALLBACK;

    public function __construct() {
        $config = InitPHP::getConfig();
        $config = $config['qiniu'];
        $this->DOMAIN = $config['domain'];
        $this->APP_ACCESS_KEY = $config['access_key'];
        $this->APP_SECRET_KEY = $config['secret_key'];
        $this->BUCKET = $config['bucket'];
        $this->CALLBACK = $config['callback'];
        Qiniu_SetKeys($this->APP_ACCESS_KEY, $this->APP_SECRET_KEY);
    }

    /**
     * 获取私有资源的URL
     *
     * @param unknown $key            
     * @return string
     */
    public function getUrl($key) {
        $baseUrl = Qiniu_RS_MakeBaseUrl($this->DOMAIN, $key);
        $getPolicy = new Qiniu_RS_GetPolicy();
        $privateUrl = $getPolicy->MakeRequest($baseUrl, null);
        return $privateUrl;
    }

    /**
     * 获取Token
     *
     * @param string $bucket            
     * @return string
     */
    public function get_upload_token($uid,$attribute,$offline_result) {
        $uinqid = uniqid() . mt_rand(1, 10000);
        $key = $uid."/".$uinqid . '.jpg';
        $params = array(
            'expires_in' => 2592000, // 直传七牛token过期时间(s)
            'callback_url' => $this->CALLBACK, // 客户端直传后回调地址（七牛引导过来的）
            'callback_body' => 'key='.$key.'&uid='.$uid.'&offline_result='.$offline_result.'&attribute='.$attribute
        );
        $putPolicy = new Qiniu_RS_PutPolicy($this->BUCKET, $params);
        $token = $putPolicy->Token(null);
        if (! $token) {
            // 获取七牛直传token失败时返回给客户端
            $return_data = array(
                'upload_token' => ''
            );
        } else {
            $return_data = array(
                'upload_token' => $token,
                'key' => $key,
                'expires_at' => 2592000 + time()
            );
        }
        return $return_data;
    }

    public function upload($key, $token, $file) {
        require_once ("qiniu/io.php");
        $putExtra = new Qiniu_PutExtra();
        list ($ret, $err) = Qiniu_PutFile($token, $key, $file, $putExtra);
        if ($err !== null) {
            echo json_encode($err);
        } else {
            echo json_encode($ret);
        }
    }
}