<?php

/**
 * 多媒体文件客户端
 * @author yikai.hu
 * @version $Id: AlipayMobilePublicMultiMediaClient.php, v 0.1 Aug 15, 2014 10:19:01 AM yikai.hu Exp $
 */

//namespace alipay\api ;

include("AlipayMobilePublicMultiMediaExecute.php");


class AlipayMobilePublicMultiMediaClient{

    private				$DEFAULT_CHARSET = 'UTF-8';
    private				$METHOD_POST     = "POST";
    private				$METHOD_GET      = "GET";
	private				$SIGN			= 'sign'; //get name

	private				$timeout = 10 ;// 超时时间
    private				$serverUrl;
    private				$appId;
    private				$privateKey;
    private				$prodCode;
    private				$format          = 'json'; //todo
    private				$sign_type       = 'RSA'; //todo

	private				$charset;
	private				$apiVersion    = "1.0";
	private				$apiMethodName = "alipay.mobile.public.multimedia.download";
	private				$media_id = "L21pZnMvVDFQV3hYWGJKWFhYYUNucHJYP3Q9YW13ZiZ4c2lnPTU0MzRhYjg1ZTZjNWJmZTMxZGJiNjIzNDdjMzFkNzkw575";
	//此处写死的，实际开发中，请传入

    private				$connectTimeout  = 3000;
    private				$readTimeout     = 15000;



	function __construct($serverUrl = '', $appId = '', $partner_private_key = '', $format = '', $charset = 'GBK'){
		$this -> serverUrl = $serverUrl;
		$this -> appId = $appId;
		$this -> privateKey = $partner_private_key;
		$this -> format = $format;
		$this -> charset = $charset;
	}

	/**
	 * getContents 获取网址内容
	 * @param $request
	 * @return text | bin
	 */
	public function getContents(){
		//自己的服务器如果没有 curl，可用：fsockopen() 等


		//1:
		//2： 私钥格式
		$datas = array(
			"app_id" 		=> $this -> appId,
			"method" 		=> $this -> METHOD_POST,
			"sign_type" 	=> $this -> sign_type,
			"version" 		=> $this -> apiVersion,
			"timestamp" 	=> date('Y-m-d H:i:s')  ,//yyyy-MM-dd HH:mm:ss
			"biz_content" 	=> '{"mediaId":"'. $this -> media_id  .'"}',
			"charset" 		=> $this -> charset
		);



		//要提交的数据
		$data_sign = $this -> buildGetUrl( $datas );

		$post_data = $data_sign;
		//初始化 curl
		$ch = curl_init();
		//设置目标服务器
		curl_setopt($ch, CURLOPT_URL, $this -> serverUrl );
		curl_setopt($ch, CURLOPT_HEADER, TRUE);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
		//超时时间
		curl_setopt($ch, CURLOPT_TIMEOUT, $this-> timeout);

		if( $this-> METHOD_POST == 'POST'){
			// post数据
			curl_setopt($ch, CURLOPT_POST, 1);
			// post的变量
			curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
		}




		$output = curl_exec($ch);
		$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
		curl_close($ch);

		echo $output;

		//分离头部
		//list($header, $body) = explode("\r\n\r\n", $output, 2);
		$datas = explode("\r\n\r\n", $output, 2);
		$header = $datas[0];

		if( $httpCode == '200'){
			$body = $datas[1];
		}else{
			$body = '';

		}




		return $this -> execute( $header, $body, $httpCode );
	}

	/**
	 *
	 * @param $request
	 * @return text | bin
	 */
	public function execute( $header = '', $body = '', $httpCode = '' ){
		$exe = new AlipayMobilePublicMultiMediaExecute( $header, $body, $httpCode );
		return $exe;
	}

	public function buildGetUrl( $query = array() ){

		if( ! is_array( $query ) ){
			//exit;
		}

		//排序参数，
		$data = $this -> buildQuery( $query );



		// 私钥密码
		$passphrase = '';
		$key_width = 64;

		//私钥
		$privateKey = $this -> privateKey;
		$p_key = array();
		//如果私钥是 1行
		if( ! stripos( $privateKey, "\n" )  ){
			$i = 0;
			while( $key_str = substr( $privateKey , $i * $key_width , $key_width) ){
				$p_key[] = $key_str;
				$i ++ ;
			}
		}else{
			//echo '一行？';
		}
		$privateKey = "-----BEGIN RSA PRIVATE KEY-----\n" . implode("\n", $p_key) ;
		$privateKey = $privateKey ."\n-----END RSA PRIVATE KEY-----";

//		echo "\n\n私钥:\n";
//		echo( $privateKey );
//		echo "\n\n\n";

		//私钥
		$private_id = openssl_pkey_get_private( $privateKey , $passphrase);


		// 签名
		$signature = '';

		if("RSA2"==$this->sign_type){

			openssl_sign($data, $signature, $private_id, OPENSSL_ALGO_SHA256 );
		}else{

			openssl_sign($data, $signature, $private_id, OPENSSL_ALGO_SHA1 );
		}

		openssl_free_key( $private_id );

		//加密后的内容通常含有特殊字符，需要编码转换下
		$signature = base64_encode($signature);

		$signature = urlencode( $signature );

		//$signature = 'XjUN6YM1Mc9HXebKMv7GTLy7gmyhktyOgKk2/Jf+cz4DtP6udkzTdpkjW2j/Z4ZSD7xD6CNYI1Spz4yS93HPT0a5X9LgFWYY8SaADqe+ArXg+FBSiTwUz49SE//Xd9+LEiIRsSFkbpkuiGoO6mqJmB7vXjlD5lx6qCM3nb41wb8=';

		$out = $data .'&'. $this -> SIGN .'='. $signature;

//		echo "\n\n 加密后:\n";
//		echo( $out );
//		echo "\n\n\n";

		return $out ;
	}

	/*
	 * 查询参数排序 a-z
	 * */
	public function buildQuery( $query ){
		if ( !$query ) {
			return null;
		}

//将要 参数 排序
		ksort( $query );

		//重新组装参数
		$params = array();
		foreach($query as $key => $value){
			$params[] = $key .'='. $value ;
		}
		$data = implode('&', $params);

		return $data;

	}














}