<?php

/**
 * https://mobile.yangkeduo.com/goods1.html?goods_id=256762212601
 *
 * @author GavinLau
 *
 */

class PDD {

    private $request_url = 'https://gw-api.pinduoduo.com/api/router';
    private $request_headers = array('content-type: application/json');
    private $request_timeout = 60;

    private $sign = ''; // 必填参数 API入参参数签名，签名值根据如下算法给出计算过程
    private $version = 'V1'; // 非必填参数 API版本，默认为V1，无要求不传此参数

    public $data_type = 'JSON'; // 非必填参数 请求返回的数据格式，可选参数为XML或JSON，默认为JSON

    public $client_id = ''; // 必填参数 已创建成功的应用标志client_id，可在应用详情和中查看
    public $client_secret;
    public $access_token = ''; // 非必填参数 用户授权令牌access_token，通过pdd.pop.auth.token.create获取

    public function __construct($client_id, $client_secret, $access_token=null) {
        $this->client_id = $client_id;
        $this->client_secret = $client_secret;
        if ($access_token !== null) $this->access_token = $access_token;
    }

    /**
     * 获取授权url
     *
     * 授权说明 https://open.pinduoduo.com/application/document/browse?idStr=BD3A776A4D41D5F5
     * @param unknown $redirect_uri
     * @param unknown $state
     */
    public function getWebAuthUrl($redirect_uri, $state) {
        return "https://fuwu.pinduoduo.com/service-market/auth?response_type=code&client_id=".$this->client_id."&redirect_uri={$redirect_uri}&state={$state}";
    }

    public function getAccessToken($code) {
        $params = $this->getPublicParams();

        $params['type'] = 'pdd.pop.auth.token.create';
        $params['code'] = $code;
        $params['sign'] = $this->getSignature($params);

        return $this->postRequest(json_encode($params));
    }

    /**
     * 订单详情
     * https://open.pinduoduo.com/application/document/api?id=pdd.order.information.get
     *
     * 查询单个订单详情（只能获取到成交时间三个月以内的交易信息）
     * {"order_info_get_response":{"request_id":"16547568855546893","order_info":{"support_nationwide_warranty":0,"country":"中国","group_status":1,"free_sf":0,"discount_amount":0.0,"platform_discount":0.0,"return_freight_payer":0,"order_status":1,"id_card_num":"","risk_control_status":0,"province":"","town_id":0,"item_list":[{"goods_name":"checkpass论文查重无限次数低价免注册查重","outer_goods_id":"","goods_price":1.0,"goods_id":329073007863,"sku_id":1115504481445,"goods_count":1,"goods_spec":"千字符","outer_id":"","goods_img":"https://img.pddpic.com/mms-material-img/2022-03-28/0c075d33-b036-46f7-a0bf-d40774f68190.png.a.jpeg"}],"pay_no":"","last_ship_time":"2022-06-11 14:37:23","delivery_one_day":0,"created_time":"2022-06-09 14:37:14","card_info_list":[],"refund_status":1,"town":"","is_stock_out":0,"receiver_address_mask":"","receive_time":"","pay_time":"2022-06-09 14:37:23","gift_list":[],"capital_free_discount":0.0,"receiver_phone_mask":"13*******67","country_id":0,"city_id":0,"invoice_status":0,"service_fee_detail":[],"city":"","order_tag_list":[{"name":"delivery_one_day","value":0},{"name":"no_trace_delivery","value":0},{"name":"self_contained","value":0},{"name":"return_freight_payer","value":0},{"name":"free_sf","value":0},{"name":"duoduo_wholesale","value":0},{"name":"support_nationwide_warranty","value":0},{"name":"only_support_replace","value":0},{"name":"oversea_tracing","value":0},{"name":"distributional_sale","value":0},{"name":"open_in_festival","value":0},{"name":"same_city_distribution","value":0},{"name":"region_black_delay_shipping","value":0},{"name":"has_subsidy_postage","value":0},{"name":"has_sf_express_service","value":0},{"name":"community_group","value":0},{"name":"has_ship_additional","value":0},{"name":"ship_additional_order","value":0}],"is_lucky_flag":1,"yyps_time":"","mkt_biz_type":0,"shipping_type":0,"remark":"","pre_sale_time":"","inner_transaction_id":"","order_change_amount":0.0,"only_support_replace":0,"logistics_id":0,"updated_at":"2022-06-09 14:37:33","street":"","receiver_name_mask":"","receiver_name":"","tracking_number":"","pay_type":"","duoduo_wholesale":0,"buyer_memo":"","is_pre_sale":0,"shipping_time":"","home_delivery_type":0,"after_sales_status":0,"address":"","id_card_name":"","self_contained":0,"goods_amount":1.0,"pay_amount":1.0,"seller_discount":0.0,"address_mask":"","yyps_date":"","confirm_status":1,"confirm_time":"2022-06-09 14:37:23","stock_out_handle_status":-1,"postage":0.0,"province_id":0,"cat_id_3":9056,"cat_id_4":0,"cat_id_1":8726,"receiver_address":"","cat_id_2":8786,"trade_type":0,"urge_shipping_time":"","receiver_phone":"$3MpaxbKBnse9$AgAAAAF2+qYGan7+ggANYOk6e6B2tcD3m4NUAgu6bY4=$0$$","order_sn":"220609-635730697112661"}}}
     *
     * 注：虚拟订单充值手机号信息无法通过此接口获取，请联系虚拟类目运营人员。
     * @param unknown $order_sn
     * @return boolean|mixed
     */
    public function getOrderInformation($order_sn) {
        $params = $this->getPublicParams();

        $params['type'] = 'pdd.order.information.get';
        $params['order_sn'] = $order_sn;
        $params['sign'] = $this->getSignature($params);

        return $this->postRequest(json_encode($params));
    }

//     /**
//      * 商品明细
//      * https://open.pinduoduo.com/application/document/api?id=pdd.goods.detail.get
//      *
//      * @param unknown $goods_id 商品id
//      *
//      */
//     public function getGoodsDetailInfo($goods_id) {
//         $params = $this->getPublicParams();

//         $params['type'] = 'pdd.goods.detail.get';
//         $params['goods_id'] = $goods_id;
//         $params['sign'] = $this->getSignature($params);

//         return $this->postRequest(json_encode($params));
//     }

    /**
     * 商品详情接口
     * https://open.pinduoduo.com/application/document/api?id=pdd.goods.information.get
     *
     * @param unknown $goods_id
     *
     * {"goods_info_get_response":{"goods_info":{"goods_name":"万方查重万方数据官网本科硕士博士毕业论文查重论文检测系统2.0","last_category":"论文检测与查询","image_url":"","shipment_limit_second":"172800","goods_quantity":422621,"goods_id":"329073140054","goods_sn":"329073140054","goods_category":"教育培训","is_onsale":"1","is_refundable":"0","second_hand":0,"sku_list":[{"single_price":"3.35","sku_img":"https://img.pddpic.com/mms-material-img/2022-02-27/3622095f-10d0-4a3f-9a2c-51aaa811e08c.png.a.jpeg","outer_goods_id":"","is_sku_onsale":"1","sku_id":"1106921187393","group_price":"2.35","outer_id":"","spec":"保证正品支持真伪验证","sku_quantity":"0"},{"single_price":"30.00","sku_img":"https://img.pddpic.com/mms-material-img/2022-02-27/12c136b0-e0be-4508-91c6-cb2ded66aa5f.png.a.jpeg","outer_goods_id":"","is_sku_onsale":"1","sku_id":"1115835177591","group_price":"25.00","outer_id":"","spec":"万方本科版（高校大学生毕业论文检测）","sku_quantity":"21509"},{"single_price":"30.00","sku_img":"https://img.pddpic.com/mms-material-img/2022-02-27/549d0277-1835-41f9-b9f7-320f6591b9ea.png.a.jpeg","outer_goods_id":"","is_sku_onsale":"1","sku_id":"1115835177592","group_price":"25.00","outer_id":"","spec":"万方硕博版（高校硕博研究生论文检测）","sku_quantity":"21538"},{"single_price":"3.60","sku_img":"https://img.pddpic.com/mms-material-img/2022-02-27/45e5a82b-4921-4686-98c6-2badf65a2789.png.a.jpeg","outer_goods_id":"","is_sku_onsale":"1","sku_id":"1119777051922","group_price":"2.60","outer_id":"","spec":"万方通用版（期刊作业报告等）","sku_quantity":"54166"},{"single_price":"6.00","sku_img":"https://img.pddpic.com/mms-material-img/2022-02-27/d21eb099-7318-432e-9303-fdb861b6e2ba.png.a.jpeg","outer_goods_id":"","is_sku_onsale":"1","sku_id":"1119949041761","group_price":"5.00","outer_id":"","spec":"万方职称版（已发表职称评定检测）","sku_quantity":"325408"}],"goods_type":"1","group_required_customer_num":"2"},"request_id":"16547602950483034"}}
     */
    public function getGoodsInformation($goods_id) {
        $params = $this->getPublicParams();

        $params['type'] = 'pdd.goods.information.get';
        $params['goods_id'] = $goods_id;
        $params['sign'] = $this->getSignature($params);

        return $this->postRequest(json_encode($params));
    }

    /**
     *
     * 商品名称模糊查询
     *
     * 商品列表接口
     * https://open.pinduoduo.com/application/document/api?id=pdd.goods.list.get
     * {"goods_list_get_response":{"goods_list":[{"is_more_sku":1,"goods_name":"checkpass论文查重无限次数低价免注册查重","thumb_url":"https://img.pddpic.com/gaudit-image/2022-03-28/edac0af376a509b227714488bd5dfa37.jpeg","goods_reserve_quantity":0,"image_url":"","sku_list":[{"outer_goods_id":"","is_sku_onsale":1,"reserve_quantity":0,"sku_id":1115504481445,"outer_id":"","spec":"千字符","sku_quantity":1277},{"outer_goods_id":"","is_sku_onsale":1,"reserve_quantity":0,"sku_id":1115476736663,"outer_id":"","spec":"无限次数","sku_quantity":1495}],"goods_quantity":2772,"goods_id":329073007863,"is_onsale":1}],"total_count":1,"request_id":"16551061312578732"}}
     *
     * @param unknown $goods_name
     * @param unknown $outer_goods_id 商家外部商品编码，支持多个，用逗号隔开，最多10个
     * @param number $page 返回页码 默认 1，页码从 1 开始PS：当前采用分页返回，数量和页数会一起传，如果不传，则采用 默认值
     * @param number $page_size 返回数量，默认 100，最大100。
     * @return boolean|mixed
     */
    public function getGoodsList($goods_name='', $outer_goods_id='', $page=1, $page_size=100) {
        $params = $this->getPublicParams();

        $params['type'] = 'pdd.goods.list.get';
        if ($goods_name) $params['goods_name'] = $goods_name;
        if ($outer_goods_id) $params['outer_goods_id'] = $outer_goods_id;
        $params['page'] = $page;
        $params['page_size'] = $page_size;
        $params['sign'] = $this->getSignature($params);

        return $this->postRequest(json_encode($params));
    }

    /**
     * 批量获取订单状态
     *
     *
     * 订单状态
     * https://open.pinduoduo.com/application/document/api?id=pdd.order.status.get
     * {"order_status_get_response":{"request_id":"16552754937789430","order_status_list":[{"order_status":2,"refund_status":4,"orderSn":"220614-336705627082662"},{"order_status":1,"refund_status":4,"orderSn":"220614-170641387082662"},{"order_status":1,"refund_status":4,"orderSn":"220614-321700576842662"}]}}
     *
     * @param unknown $order_sns 0150909-452750051,20150909-452750134 用逗号分开
     * @return boolean|mixed
     */
    public function getOrderStatus($order_sns) {

        $params = $this->getPublicParams();

        $params['type'] = 'pdd.order.status.get';
        $params['order_sns'] = $order_sns;
        $params['sign'] = $this->getSignature($params);

        return $this->postRequest(json_encode($params));
    }


    /**
     * 订单列表查询接口（根据成交时间）
     * https://open.pinduoduo.com/application/document/api?id=pdd.order.list.get
     *
     * @param unknown $start_confirm_at 必填，成交时间开始时间的时间戳，指格林威治时间 1970 年 01 月 01 日 00 时 00 分 00 秒(北京时间 1970 年 01 月 01 日 08 时 00 分 00 秒)起至现在的总秒数
     * @param unknown $end_confirm_at 必填，成交时间结束时间的时间戳，指格林威治时间 1970 年 01 月 01 日 00 时 00 分 00 秒(北京时间 1970 年 01 月 01 日 08 时 00 分 00 秒)起至现在的总秒数 PS：开始时间结束时间间距不超过 24 小时
     * @param unknown $order_status 发货状态，1：待发货，2：已发货待签收，3：已签收 5：全部
     * @param unknown $page 返回页码 默认 1，页码从 1 开始 PS：当前采用分页返回，数量和页数会一起传，如果不传，则采用 默认值
     * @param unknown $page_size 返回数量，默认 100。最大 100
     * @param unknown $refund_status 售后状态 1：无售后或售后关闭，2：售后处理中，3：退款中，4： 退款成功 5：全部
     * @param unknown $trade_type 非必填 订单类型 0-普通订单 ，1- 定金订单
     * @param unknown $use_has_next 非必填 是否启用has_next的分页方式，如果指定true,则返回的结果中不包含总记录数，但是会新增一个是否存在下一页的的字段，通过此种方式获取增量交易，效率在原有的基础上有80%的提升
     * @return boolean|mixed
     *
     * {"error_response":{"error_msg":"access_token已过期","sub_msg":"access_token已过期","sub_code":"10019","error_code":10019,"request_id":"16570185181360686"}}
     * {"order_list_get_response":{"total_count":1,"has_next":false,"order_list":[{"support_nationwide_warranty":0,"country":"中国","group_status":1,"free_sf":0,"discount_amount":0.0,"platform_discount":0.0,"return_freight_payer":0,"order_status":1,"id_card_num":"","risk_control_status":0,"province":"","town_id":0,"item_list":[{"goods_name":"checkpass论文查重无限次数低价免注册查重","outer_goods_id":"","goods_price":2.0,"goods_id":329073007863,"sku_id":1115504481445,"goods_count":1,"goods_spec":"千字符","outer_id":"","goods_img":"https://img.pddpic.com/mms-material-img/2022-03-28/0c075d33-b036-46f7-a0bf-d40774f68190.png.a.jpeg"}],"pay_no":"","last_ship_time":"2022-07-07 18:59:01","delivery_one_day":0,"created_time":"2022-07-05 18:58:41","card_info_list":[],"refund_status":1,"town":"","is_stock_out":0,"receiver_address_mask":"","receive_time":"","pay_time":"2022-07-05 18:59:01","gift_list":[],"capital_free_discount":0.0,"receiver_phone_mask":"13*******67","country_id":0,"city_id":0,"invoice_status":0,"service_fee_detail":[],"city":"","order_tag_list":[{"name":"delivery_one_day","value":0},{"name":"no_trace_delivery","value":0},{"name":"self_contained","value":0},{"name":"return_freight_payer","value":0},{"name":"free_sf","value":0},{"name":"duoduo_wholesale","value":0},{"name":"support_nationwide_warranty","value":0},{"name":"only_support_replace","value":0},{"name":"oversea_tracing","value":0},{"name":"distributional_sale","value":0},{"name":"open_in_festival","value":0},{"name":"same_city_distribution","value":0},{"name":"region_black_delay_shipping","value":0},{"name":"has_subsidy_postage","value":0},{"name":"has_sf_express_service","value":0},{"name":"community_group","value":0},{"name":"has_ship_additional","value":0},{"name":"ship_additional_order","value":0},{"name":"conso_order","value":0}],"is_lucky_flag":1,"yyps_time":"","mkt_biz_type":0,"shipping_type":0,"remark":"","pre_sale_time":"","inner_transaction_id":"","order_change_amount":0.0,"only_support_replace":0,"logistics_id":0,"updated_at":"2022-07-05 18:59:11","street":"","receiver_name_mask":"","receiver_name":"","tracking_number":"","pay_type":"","duoduo_wholesale":0,"buyer_memo":"","is_pre_sale":0,"shipping_time":"","home_delivery_type":0,"after_sales_status":0,"address":"","id_card_name":"","self_contained":0,"goods_amount":2.0,"pay_amount":2.0,"seller_discount":0.0,"address_mask":"","yyps_date":"","confirm_status":1,"confirm_time":"2022-07-05 18:59:01","stock_out_handle_status":-1,"postage":0.0,"province_id":0,"cat_id_3":9056,"cat_id_4":0,"cat_id_1":8726,"receiver_address":"","cat_id_2":8786,"trade_type":0,"urge_shipping_time":"","receiver_phone":"$u9upNmQ5775n$AgAAAAGFtKUGQpF/UwCIGc9XLGYcE0AFeoGvJNLo1wk=$0$$","order_sn":"220705-189933833112661"}],"request_id":"16570188342965892"}}
     */
    public function getOrderList($start_confirm_at, $end_confirm_at, $order_status, $refund_status, $page, $page_size, $trade_type=-1, $use_has_next='true') {

        $params = $this->getPublicParams();

        $params['type'] = 'pdd.order.list.get';
        $params['start_confirm_at'] = $start_confirm_at;
        $params['end_confirm_at'] = $end_confirm_at;
        $params['order_status'] = $order_status;
        $params['refund_status'] = $refund_status;
        $params['page'] = $page;
        $params['page_size'] = $page_size;
        $params['use_has_next'] = $use_has_next;
        if ($trade_type > -1) $params['trade_type'] = $trade_type;

        $params['sign'] = $this->getSignature($params);

        return $this->postRequest(json_encode($params));
    }

    /**
     * 订单增量接口
     * https://open.pinduoduo.com/application/document/api?id=pdd.order.number.list.increment.get
     *
     * @param unknown $start_updated_at 必填，最后更新时间开始时间的时间戳，指格林威治时间 1970 年01 月 01 日 00 时 00 分 00 秒(北京时间 1970 年 01 月 01 日 08 时 00 分 00 秒)起至现在的总秒数
     * @param unknown $end_updated_at 必填，最后更新时间结束时间的时间戳，指格林威治时间 1970 年 01 月 01 日 00 时 00 分 00 秒(北京时间 1970 年 01 月 01 日 08 时 00 分 00 秒)起至现在的总秒数 PS：开始时间结束时间间距不超过 30 分钟
     * @param unknown $order_status 发货状态，1：待发货，2：已发货待签收，3：已签收 5：全部
     * @param unknown $page 返回页码，默认 1，页码从 1 开始 PS：当前采用分页返回，数量和页数会一起传，如果不传，则采用 默认值；注：必须采用倒序的分页方式（从最后一页往回取）才能避免漏单问题。
     * @param unknown $page_size 返回数量，默认 100。最大 100
     * @param unknown $refund_status 售后状态 1：无售后或售后关闭，2：售后处理中，3：退款中，4： 退款成功 5：全部
     * @param unknown $is_lucky_flag 订单类型（是否抽奖订单），0-全部，1-非抽奖订单，2-抽奖订单
     * @param unknown $trade_type 非必填 订单类型 0-普通订单 ，1- 定金订单
     * @param unknown $use_has_next 非必填 是否启用has_next的分页方式，如果指定true,则返回的结果中不包含总记录数，但是会新增一个是否存在下一页的的字段，通过此种方式获取增量交易，效率在原有的基础上有80%的提升
     * @return boolean|mixed
     *
     * {"error_response":{"error_msg":"access_token已过期","sub_msg":"access_token已过期","sub_code":"10019","error_code":10019,"request_id":"16570185181360686"}}
     * {"order_list_get_response":{"total_count":1,"has_next":false,"order_list":[{"support_nationwide_warranty":0,"country":"中国","group_status":1,"free_sf":0,"discount_amount":0.0,"platform_discount":0.0,"return_freight_payer":0,"order_status":1,"id_card_num":"","risk_control_status":0,"province":"","town_id":0,"item_list":[{"goods_name":"checkpass论文查重无限次数低价免注册查重","outer_goods_id":"","goods_price":2.0,"goods_id":329073007863,"sku_id":1115504481445,"goods_count":1,"goods_spec":"千字符","outer_id":"","goods_img":"https://img.pddpic.com/mms-material-img/2022-03-28/0c075d33-b036-46f7-a0bf-d40774f68190.png.a.jpeg"}],"pay_no":"","last_ship_time":"2022-07-07 18:59:01","delivery_one_day":0,"created_time":"2022-07-05 18:58:41","card_info_list":[],"refund_status":1,"town":"","is_stock_out":0,"receiver_address_mask":"","receive_time":"","pay_time":"2022-07-05 18:59:01","gift_list":[],"capital_free_discount":0.0,"receiver_phone_mask":"13*******67","country_id":0,"city_id":0,"invoice_status":0,"service_fee_detail":[],"city":"","order_tag_list":[{"name":"delivery_one_day","value":0},{"name":"no_trace_delivery","value":0},{"name":"self_contained","value":0},{"name":"return_freight_payer","value":0},{"name":"free_sf","value":0},{"name":"duoduo_wholesale","value":0},{"name":"support_nationwide_warranty","value":0},{"name":"only_support_replace","value":0},{"name":"oversea_tracing","value":0},{"name":"distributional_sale","value":0},{"name":"open_in_festival","value":0},{"name":"same_city_distribution","value":0},{"name":"region_black_delay_shipping","value":0},{"name":"has_subsidy_postage","value":0},{"name":"has_sf_express_service","value":0},{"name":"community_group","value":0},{"name":"has_ship_additional","value":0},{"name":"ship_additional_order","value":0},{"name":"conso_order","value":0}],"is_lucky_flag":1,"yyps_time":"","mkt_biz_type":0,"shipping_type":0,"remark":"","pre_sale_time":"","inner_transaction_id":"","order_change_amount":0.0,"only_support_replace":0,"logistics_id":0,"updated_at":"2022-07-05 18:59:11","street":"","receiver_name_mask":"","receiver_name":"","tracking_number":"","pay_type":"","duoduo_wholesale":0,"buyer_memo":"","is_pre_sale":0,"shipping_time":"","home_delivery_type":0,"after_sales_status":0,"address":"","id_card_name":"","self_contained":0,"goods_amount":2.0,"pay_amount":2.0,"seller_discount":0.0,"address_mask":"","yyps_date":"","confirm_status":1,"confirm_time":"2022-07-05 18:59:01","stock_out_handle_status":-1,"postage":0.0,"province_id":0,"cat_id_3":9056,"cat_id_4":0,"cat_id_1":8726,"receiver_address":"","cat_id_2":8786,"trade_type":0,"urge_shipping_time":"","receiver_phone":"$u9upNmQ5775n$AgAAAAGFtKUGQpF/UwCIGc9XLGYcE0AFeoGvJNLo1wk=$0$$","order_sn":"220705-189933833112661"}],"request_id":"16570188342965892"}}
     */
    public function getIncrementOrderNumberList($start_updated_at, $end_updated_at, $order_status, $refund_status, $page, $page_size, $is_lucky_flag=0, $trade_type=-1, $use_has_next='true') {

        $params = $this->getPublicParams();

        $params['type'] = 'pdd.order.number.list.increment.get';
        $params['start_updated_at'] = $start_updated_at;
        $params['end_updated_at'] = $end_updated_at;
        $params['order_status'] = $order_status;
        $params['refund_status'] = $refund_status;
        $params['page'] = $page;
        $params['page_size'] = $page_size;
        $params['use_has_next'] = $use_has_next;
        $params['is_lucky_flag'] = $is_lucky_flag;
        if ($trade_type > -1) $params['trade_type'] = $trade_type;

        $params['sign'] = $this->getSignature($params);

        return $this->postRequest(json_encode($params));
    }

    /**
     * 获取开通订单同步服务的用户
     * https://open.pinduoduo.com/application/document/api?id=pdd.ddy.pdp.users.get
     *
     * @param string $owner_id          如果传了owner_id，表示单条查询
     * @param string $start_modified    查询最后更改时间在某个时间段内的用户
     * @param string $end_modified      查询最后更改时间在某个时间段内的用户
     * @param number $page_no           当前页数
     * @param number $page_size         每页记录数，默认200，最大200
     * @return boolean|mixed
     *
     *  {"ddy_pdp_users_get_response":{"request_id":"16602046604027416","users":[],"total_results":0}}
     *
     *  {"ddy_pdp_users_get_response":{"request_id":"16602031726529724","users":[{"owner_id":959603435,"rds_id":"48B26FD166F024F7","history_days":0,"status":1}],"total_results":1}}
     */
    public function getDdyPdpUsers($owner_id='', $start_modified='', $end_modified='', $page_no=1, $page_size=200) {

        $params['type'] = 'pdd.ddy.pdp.users.get';
        if ($owner_id) $params['owner_id'] = $owner_id;
        if ($start_modified) $params['start_modified'] = $start_modified;
        if ($end_modified) $params['end_modified'] = $end_modified;
        if ($page_no) $params['page_no'] = $page_no;
        if ($page_size) $params['page_size'] = $page_size;

        return $this->getPostRequestResult($params);
    }

    /**
     * 添加数据推送用户
     * https://open.pinduoduo.com/application/document/api?id=pdd.ddy.pdp.user.add
     *
     * @param unknown $rds_id rds实例编号
     * @param unknown $history_days 推送历史数据天数，只能为30天内，包含30天。当此参数不填时，表示以页面中应用配置的历史天数为准；如果为0表示这个用户不推送历史数据；其它表示推送的历史天数
     *
     * {"ddy_pdp_user_add_response":{"is_success":true,"request_id":"16602048767776597"}}
     *
     */
    public function addDdyPdpUser($rds_id, $history_days=-1) {
        $params['type'] = 'pdd.ddy.pdp.user.add';
        $params['rds_id'] = $rds_id;
        $params['history_days'] = $history_days;

        return $this->getPostRequestResult($params);
    }

    /**
     * 删除数据推送用户
     * https://open.pinduoduo.com/application/document/api?id=pdd.ddy.pdp.user.delete
     *
     * @param unknown $owner_id
     * @return boolean|mixed
     */
    public function deleteDdyPdpUser($owner_id) {
        $params['type'] = 'pdd.ddy.pdp.user.delete';
        $params['$owner_id'] = $owner_id;

        return $this->getPostRequestResult($params);
    }

    private function getPostRequestResult($params) {
        $pub_params = $this->getPublicParams();

        $nparams = array_merge($pub_params, $params);
        $nparams['sign'] = $this->getSignature($nparams);

        return $this->postRequest(json_encode($nparams));
    }

    /**
     * 公共参数
     */
    public function getPublicParams() {
        $pub_params = array(
            'client_id' =>  $this->client_id,
            'timestamp' =>  time(),
            'data_type' =>  $this->data_type,
            'version'   =>  $this->version,
        );
        if ($this->access_token) $pub_params['access_token'] = $this->access_token;

        return $pub_params;
    }

    /**
     * 签名
     * https://open.pinduoduo.com/application/document/browse?idStr=8EC06C399636041E
     * @param unknown $params
     */
    public function getSignature($params) {
        ksort($params);

        $signstr = '';
        foreach($params as $key => $val) {
            $signstr .= "{$key}{$val}";
        }
        $signstr = $this->client_secret.$signstr.$this->client_secret;

        $sign = strtoupper(md5($signstr));

        return $sign;
    }

    /**
     * POST REQUEST
     * @param unknown $url
     * @param unknown $data
     * @param array $headers
     * @param number $timeout
     */
    public function postRequest($data) {
        $ch = curl_init();

        curl_setopt($ch, CURLOPT_HTTPHEADER, $this->request_headers);

        //分析是否开启SSL加密
        $ssl = substr($this->request_url, 0, 8) == 'https://' ? true : false;
        if ($ssl) {
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0); // 对认证证书来源的检查
            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 1); // 从证书中检查SSL加密算法是否存在
        }

        curl_setopt($ch, CURLOPT_URL, $this->request_url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
        curl_setopt($ch, CURLOPT_TIMEOUT, $this->request_timeout);

        $res = curl_exec($ch);
        if(curl_error($ch)=='') {
            curl_close($ch);
            return $res;
        }

        curl_close($ch);
        return false;
    }

}