using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using CsharpHttpHelper;
using CsharpHttpHelper.Enum;
using Microsoft.ClearScript.V8;
using Newtonsoft.Json.Linq;

namespace Api.Framework.Tools
{
    /// <summary>
    /// 快手解析助手
    /// </summary>
    public class KSHelper
    {
        /// <summary>
        /// 解析商品内容获取Id
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static string GetItemId(string str, out string title)
        {
            #region 解析链接
            if (Regex.IsMatch(str, @"((?:https://a6chq\.ogwormb\.com)|(?:(https://ac31\.suvmothq\.com)))", RegexOptions.IgnoreCase))
            {
                var url = HttpExtend.RegexMatchUrl(str);
                str = CsharpHttpHelper.HttpExtend.GetLocationUrl(url);
            }

            var reg = Regex.Match(str,
                @"https:\/\/cps\.kwaixiaodian\.com\/page\/kwaimoney\/promotion\/goods\/detail\/(?<商品ID>\d+)",
                RegexOptions.ExplicitCapture);
            if (!reg.Success)
                reg = Regex.Match(str, @"package-shop/pages/goods/main.*?[\?&]id=(?<商品ID>\d+)",
                    RegexOptions.IgnoreCase | RegexOptions.Multiline);
            if (!reg.Success)
                reg = Regex.Match(str, @"page/kwaishop-buyer-goods-detail.*?[\?&]id=(?<商品ID>\d+)",
                    RegexOptions.IgnoreCase | RegexOptions.Multiline);

            if (reg.Success)
            {
                title = string.Empty;
                return reg.Groups["商品ID"].Value;
            }
            #endregion

            #region 解析解析口令
            //##X7poMxtqkJLk21g##

            reg = Regex.Match(str, @"((?:##)|(?:[^a-zA-Z0-9-]))(?<口令>X[a-zA-Z0-9-]{13,15})((?:##)|(?:[^a-zA-Z0-9-]))", RegexOptions.IgnoreCase);
            if (reg.Success)
            {
                var result = AnalysisKl(reg.Groups["口令"].Value);
                //....解析操作

                #region 数据结构

                //{"result":1,"hostName":"zt-zl-rs296.idczw.hb1.kwaidc.com","cache-scope":"nocache","error_msg":null,"showDialog":{"originKpn":"KUAISHOU","originSubBiz":"GOODS_DETAILS_OF_NATIVE","kpn":"KUAISHOU","subBiz":"share","kwaiUrl":"https://app.kwaixiaodian.com/merchant/shop/detail?fid=2430851481&cc=share_copylink&followRefer=151&shareMethod=TOKEN&kpn=KUAISHOU&subBiz=GOODS_DETAILS_OF_NATIVE&carrierType=24&shareToken=X7WKCOoS0M6bgoi&shareId=16956809344990&shareMode=SYSTEM&originShareId=16956809344990&layoutType=4&shareObjectId=4035974256190&id=4035974256190&shareUrlOpened=0&carrierId=5&timestamp=1653385982520","dialog":{"subTitle":"来快手看看这个商品吧","footerText":"来自好友的分享，查看他","actionButtonTargetUrl":"https://app.kwaixiaodian.com/merchant/shop/detail?fid=2430851481&cc=share_copylink&followRefer=151&shareMethod=TOKEN&kpn=KUAISHOU&subBiz=GOODS_DETAILS_OF_NATIVE&carrierType=24&shareId=16956809344990&shareMode=SYSTEM&originShareId=16956809344990&layoutType=4&shareObjectId=4035974256190&id=4035974256190&shareUrlOpened=0&carrierId=5&timestamp=1653385982520","shareId":"16956809344990","footerTargetUrl":"kwai://profile/2430851481?fid=2430851481&cc=share_copylink&followRefer=151&shareMethod=TOKEN&kpn=KUAISHOU&subBiz=GOODS_DETAILS_OF_NATIVE&carrierType=24&shareId=16956809344990&shareMode=SYSTEM&originShareId=16956809344990&layoutType=4&shareObjectId=4035974256190&id=4035974256190&shareUrlOpened=0&carrierId=5&timestamp=1653385982520","shareObjectId":"4035974256190","iconUrl":"https://p3.eckwai.com/bs2/image-kwaishop-product/item-2763666190-185a99e1c95847b39e39ad59f34c94cf.jpg","iconTargetUrl":"https://app.kwaixiaodian.com/merchant/shop/detail?fid=2430851481&cc=share_copylink&followRefer=151&shareMethod=TOKEN&kpn=KUAISHOU&subBiz=GOODS_DETAILS_OF_NATIVE&carrierType=24&shareId=16956809344990&shareMode=SYSTEM&originShareId=16956809344990&layoutType=4&shareObjectId=4035974256190&id=4035974256190&shareUrlOpened=0&carrierId=5&timestamp=1653385982520","title":"1元 快乐旺哥草莓蛋糕【拼满19.9包邮发货】","actionButtonText":"去看看"},"oldShowType":0,"newShowTypes":["bigHeadDialog"],"extParams":{"kwaiUrl":"kwai://home","shareUrl":"/package-shop/pages/goods/main?id=4035974256190&layoutType=4&carrierType=24","iconUrl":"https://p3.eckwai.com/bs2/image-kwaishop-product/item-2763666190-185a99e1c95847b39e39ad59f34c94cf.jpg","title":"1元 快乐旺哥草莓蛋糕【拼满19.9包邮发货】","carrierId":"5","jumpUrl":"https://app.kwaixiaodian.com/merchant/shop/detail?id=4035974256190&layoutType=4&carrierType=24"}},"max-age":0}

                #endregion

                var jObj = JObject.Parse(result);
                var jumpUrl = jObj?["showDialog"]?["dialog"]?["shareObjectId"]?.ToString();
                if (!string.IsNullOrWhiteSpace(jumpUrl))
                {
                    title = jObj?["showDialog"]?["dialog"]?["title"]?.ToString();
                    return jumpUrl;
                }
            }


            #endregion

            title = string.Empty;
            return string.Empty;
        }

        #region 快手口令解析
        /// <summary>
        /// Post参数
        /// </summary>
        static string postParam = $"kpf=ANDROID_PHONE&shareMessage=内容&kpn=KUAISHOU&sdkVersion=1.14.0.0&theme=light&sessionId=8a19a62f-fa3c-4097-aae4-cdf0ec11c59d&extTransientParams={{\"source\":\"autoDetectPasteboard\"}}&launchState=firstColdLaunchToday";
        /// <summary>
        /// 参数2
        /// </summary>
        static string getParam = "kpf=ANDROID_PHONE&ver=9.7&gid=&mod=HUAWEI%28HWI-AL00%29&c=OPPO&oDid=TEST_ANDROID_dd6f96475163fa32&android_os=0&os=android&appver=9.7.30.21320&boardPlatform=hi3660&ftt=&kpn=KUAISHOU&subBiz=share&androidApiLevel=28&language=zh-cn&sys=ANDROID_9&mcc=46007&userId=0&memoryTotalSize=5725&did_tag=0&countryCode=CN&rdid=&net=WIFI&did=";

        /// <summary>
        /// 解析快手口令
        /// </summary>
        /// <param name="content"></param>
        /// <returns></returns>
        public static string AnalysisKl(string content)
        {
            content = $"##{content}##";
            var sign = GetKlSign(content);

            var param = postParam.Replace("内容", content) + $"&sig={sign}";

            var url = $"https://api.kuaishouzt.com/rest/zt/share/show/any?{getParam}";
            HttpHelper http = new HttpHelper();
            HttpItem item = new HttpItem()
            {
                URL = url,
                Method = "post",
                IsToLower = false,
                Cookie = "",
                Referer = "",
                Postdata = param,
                Timeout = 100000,
                ReadWriteTimeout = 30000,
                UserAgent = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)",
                ContentType = "application/x-www-form-urlencoded",
                Allowautoredirect = false,
                ResultType = ResultType.String
            };
            HttpResult result = http.GetHtml(item);
            string html = result.Html;
            //EventClient.OnEvent("", "口令解析:" + html);
            return html;
        }

        private static string GetKlSign(string content)
        {
            var paramC = $"{postParam.Replace("内容", content)}&{getParam}";

            var deContent = System.Web.HttpUtility.UrlDecode(paramC);

            //var splits = deContent.Split('&').ToList();
            //splits.Sort();
            //var sortContent = string.Join("", splits);


            byte[] deContentAAscii = Encoding.ASCII.GetBytes(deContent);
            string deContentUtf8 = Encoding.UTF8.GetString(deContentAAscii);

            var sortContent = JsStrSort(deContentUtf8);

            var result = $"{sortContent}382700b563f4";

            MD5 md5 = MD5.Create();
            var bytes = md5.ComputeHash(Encoding.UTF8.GetBytes(result));

            // 第五步：把二进制转化为大写的十六进制
            StringBuilder strb = new StringBuilder();
            for (int i = 0; i < bytes.Length; i++)
            {
                strb.Append(bytes[i].ToString("x2"));
            }

            return strb.ToString();
        }

        private static string JsStrSort(string content)
        {
            return V8Method(JsSort, $"'{content}'", "getString");
        }

        /// <summary>
        /// 使用V8引擎执行JS代码
        /// </summary>
        /// <param name="JsCode">JS代码</param>
        /// <param name="JsParam">当前方法需要的参数</param>
        /// <param name="JsMethodName">执行的JS方法名</param>
        /// <returns></returns>
        private static string V8Method(string JsCode, string JsParam, string JsMethodName)
        {
            string result = string.Empty;
            try
            {
                using (var engine = new V8ScriptEngine())
                {
                    V8Script script = engine.Compile(JsCode);
                    engine.Execute(script);
                    result = engine.ExecuteCommand(string.Format("{0}({1})", JsMethodName, JsParam));
                    //其他写法
                }
            }
            catch (Exception ex)
            {
                //result = ex.Message.ToString();
            }
            return result;
        }

        private static string JsSort
        {
            get
            {
                return @"function getString(str){  
            var array;
            array = str.split('&');
            array.sort();
            return array.join('');
        }";
            }


        }
        #endregion


    }
}