using System;
using System.Collections.Generic;

namespace WX.CRM.Common.WxPay
{
    public class NativePay
    {


        /// <summary>
        /// 生成直接支付二维码url，支付url有效期为2小时
        /// </summary>
        /// <param name="productId">商品ID,trade_type=NATIVE时，此参数必传。此参数为二维码中包含的商品ID，商户自行定义</param>
        /// <param name="orderNo">商户订单号。商户系统内部订单号，要求32个字符内，只能是数字、大小写字母_-|* 且在同一个商户号下唯一</param>
        /// <param name="body">商品描述</param>
        /// <param name="totalAmount">订单总金额，单位为分</param>
        /// <returns></returns>
        public string GetPayQRCode(string productId, string orderNo, string body, double totalAmount, string mchId)
        {
            Log.Info(this.GetType().ToString(), "Native pay mode 2 url is producing...");

            WxPayData data = new WxPayData();
            data.SetValue("body", body);//商品描述
            //data.SetValue("attach", "test");//附加数据
            data.SetValue("out_trade_no", orderNo);//随机字符串
            data.SetValue("total_fee", totalAmount);//总金额
            data.SetValue("time_start", DateTime.Now.ToString("yyyyMMddHHmmss"));//交易起始时间
            //data.SetValue("time_expire", DateTime.Now.AddMinutes(30).ToString("yyyyMMddHHmmss"));//交易结束时间
            data.SetValue("time_expire", DateTime.Now.Date.AddDays(1).ToString("yyyyMMddHHmmss"));//交易结束时间

            data.SetValue("trade_type", "NATIVE");//交易类型
            data.SetValue("product_id", productId);//商品ID
            data.SetValue("limit_pay", "no_credit");
            LogHelper.Info("paydata:" + data.ToJson());
            WxPayData result = WxPayApi.UnifiedOrder(data, mchId);//调用统一下单接口
            string url = result.GetValue("code_url").ToString();//获得统一下单接口返回的二维码链接

            Log.Info(this.GetType().ToString(), "Get native pay mode 2 url : " + url);
            return url;
        }

        /**
        * 参数数组转换为url格式
        * @param map 参数名与参数值的映射表
        * @return URL字符串
        */
        private string ToUrlParams(SortedDictionary<string, object> map)
        {
            string buff = "";
            foreach (KeyValuePair<string, object> pair in map)
            {
                buff += pair.Key + "=" + pair.Value + "&";
            }
            buff = buff.Trim('&');
            return buff;
        }
    }
}