using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using POSV.Utils;
using System.Security.Cryptography.X509Certificates;

namespace POSV
{
    /// <summary>
    /// 微信支付接口，官方API：https://pay.weixin.qq.com/wiki/doc/api/index.html
    /// </summary>
    public static class WxPayV3
    {
        /// <summary>
        /// 统一支付接口
        /// 统一支付接口，可接受JSAPI/NATIVE/APP 下预支付订单，返回预支付订单号。NATIVE 支付返回二维码code_url。
        /// </summary>
        /// <param name="dataInfo">微信支付需要post的Data数据</param>
        /// <param name="timeOut"></param>
        /// <returns></returns>
        public static UnifiedorderResult Unifiedorder(WxPayV3UnifiedorderRequestData dataInfo, int timeOut = Constant.TIMEOUT)
        {
            var urlFormat = "https://api.mch.weixin.qq.com/pay/unifiedorder";
            var data = dataInfo.ParseXML();//获取XML
            //throw new Exception(data.HtmlEncode());
            MemoryStream ms = new MemoryStream();
            var formDataBytes = data == null ? new byte[0] : Encoding.UTF8.GetBytes(data);
            ms.Write(formDataBytes, 0, formDataBytes.Length);
            ms.Seek(0, SeekOrigin.Begin);//设置指针读取位置


            var resultXml = RequestUtility.HttpPost(urlFormat, null, ms, timeOut: timeOut);
            return new UnifiedorderResult(resultXml);
        }

        /// <summary>
        /// Native
        /// </summary>
        /// <param name="appId">开放平台账户的唯一标识</param>
        /// <param name="timesTamp">时间戳</param>
        /// <param name="mchId">商户Id</param>
        /// <param name="nonceStr">32 位内的随机串，防重发</param>
        /// <param name="productId">商品唯一id</param>
        /// <param name="sign">签名</param>
        public static string NativePay(string appId, string timesTamp, string mchId, string nonceStr, string productId, string sign)
        {
            var urlFormat = "weixin://wxpay/bizpayurl?sign={0}&appid={1}&mch_id={2}&product_id={3}&time_stamp={4}&nonce_str={5}";
            var url = string.Format(urlFormat, sign, appId, mchId, productId, timesTamp, nonceStr);

            return url;
        }


        /// <summary>
        /// 短链接转换接口
        /// </summary>
        /// <param name="dataInfo"></param>
        /// <returns></returns>
        public static ShortUrlResult ShortUrl(WxPayV3ShortUrlRequestData dataInfo)
        {
            var urlFormat = "https://api.mch.weixin.qq.com/tools/shorturl";
            var data = dataInfo.ParseXML();
            var formDataBytes = data == null ? new byte[0] : Encoding.UTF8.GetBytes(data);
            MemoryStream ms = new MemoryStream();
            ms.Write(formDataBytes, 0, formDataBytes.Length);
            ms.Seek(0, SeekOrigin.Begin);//设置指针读取位置
            var resultXml = RequestUtility.HttpPost(urlFormat, null, ms);
            return new ShortUrlResult(resultXml);
        }

        /// <summary>
        /// 撤销订单接口
        /// </summary>
        /// <param name="dataInfo"></param>
        /// <returns></returns>
        public static ReverseResult Reverse(WxPayV3ReverseRequestData dataInfo)
        {
            var urlFormat = "https://api.mch.weixin.qq.com/secapi/pay/reverse";
            var data = dataInfo.ParseXML();
            var formDataBytes = data == null ? new byte[0] : Encoding.UTF8.GetBytes(data);
            MemoryStream ms = new MemoryStream();
            ms.Write(formDataBytes, 0, formDataBytes.Length);
            ms.Seek(0, SeekOrigin.Begin);//设置指针读取位置
            var resultXml = RequestUtility.HttpPost(urlFormat, null, ms);
            return new ReverseResult(resultXml);
        }

        /// <summary>
        /// 刷卡支付
        /// 提交被扫支付
        /// </summary>
        /// <param name="dataInfo"></param>
        /// <returns></returns>
        public static MicropayResult MicroPay(WxPayV3MicroPayRequestData dataInfo)
        {
            var urlFormat = "https://api.mch.weixin.qq.com/pay/micropay";
            var data = dataInfo.ParseXML();
            var formDataBytes = data == null ? new byte[0] : Encoding.UTF8.GetBytes(data);
            MemoryStream ms = new MemoryStream();
            ms.Write(formDataBytes, 0, formDataBytes.Length);
            ms.Seek(0, SeekOrigin.Begin);//设置指针读取位置
            var resultXml = POSV.Helper.HttpHelper.Post(urlFormat, data);
            //var resultXml = RequestUtility.HttpPost(urlFormat , null , ms);
            return new MicropayResult(resultXml);
        }

        /// <summary>
        /// 订单查询接口
        /// </summary>
        /// <param name="dataInfo"></param>
        /// <returns></returns>
        public static OrderQueryResult OrderQuery(WxPayV3OrderQueryRequestData dataInfo)
        {
            var urlFormat = "https://api.mch.weixin.qq.com/pay/orderquery";
            var data = dataInfo.ParseXML();//获取XML
            var formDataBytes = data == null ? new byte[0] : Encoding.UTF8.GetBytes(data);
            MemoryStream ms = new MemoryStream();
            ms.Write(formDataBytes, 0, formDataBytes.Length);
            ms.Seek(0, SeekOrigin.Begin);//设置指针读取位置
            var resultXml = RequestUtility.HttpPost(urlFormat, null, ms);
            return new OrderQueryResult(resultXml);
        }

        /// <summary>
        /// 关闭订单接口
        /// </summary>
        /// <param name="dataInfo">关闭订单需要post的xml数据</param>
        /// <returns></returns>
        public static CloseOrderResult CloseOrder(WxPayV3CloseOrderRequestData dataInfo)
        {
            var urlFormat = "https://api.mch.weixin.qq.com/pay/closeorder";
            var data = dataInfo.ParseXML();
            var formDataBytes = data == null ? new byte[0] : Encoding.UTF8.GetBytes(data);
            MemoryStream ms = new MemoryStream();
            ms.Write(formDataBytes, 0, formDataBytes.Length);
            ms.Seek(0, SeekOrigin.Begin);//设置指针读取位置
            var resultXml = RequestUtility.HttpPost(urlFormat, null, ms);
            return new CloseOrderResult(resultXml);
        }

        /// <summary>
        /// 退款接口
        /// </summary>
        /// <param name="dataInfo"></param>
        /// <returns></returns>
        public static OrderRefundResult OrderRefund(WxPayV3OrderRefundRequestData dataInfo, X509Certificate2 cert)
        {
            var urlFormat = "https://api.mch.weixin.qq.com/secapi/pay/refund";
            var data = dataInfo.ParseXML();
            var formDataBytes = data == null ? new byte[0] : Encoding.UTF8.GetBytes(data);
            MemoryStream ms = new MemoryStream();
            ms.Write(formDataBytes, 0, formDataBytes.Length);
            ms.Seek(0, SeekOrigin.Begin);//设置指针读取位置

            var resultXml = RequestUtility.HttpPost(urlFormat, null, ms, null, null, null, cert);
            return new OrderRefundResult(resultXml);
        }


        /// <summary>
        /// 退款查询接口
        /// </summary>
        /// <param name="dataInfo"></param>
        /// <returns></returns>
        public static RefundQueryResult RefundQuery(WxPayV3RefundQueryRequestData dataInfo)
        {
            var urlFormat = "https://api.mch.weixin.qq.com/pay/refundquery";
            var data = dataInfo.ParseXML();
            var formDataBytes = data == null ? new byte[0] : Encoding.UTF8.GetBytes(data);
            MemoryStream ms = new MemoryStream();
            ms.Write(formDataBytes, 0, formDataBytes.Length);
            ms.Seek(0, SeekOrigin.Begin);//设置指针读取位置
            var resultXml = RequestUtility.HttpPost(urlFormat, null, ms);
            return new RefundQueryResult(resultXml);
        }

    }
}