using System;
using System.Collections.Generic;
using System.Configuration;
using System.Diagnostics;
using System.IO;
using System.IO.Compression;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using HtmlAgilityPack;
using Newtonsoft.Json;
using static System.Net.Mime.MediaTypeNames;

namespace FCS.Common
{
    public class IPHelper
    {

        static object locker = new object();
        static int threadCount = 0;
        static int finishcount = 0;
        private static List<string> list = new List<string>();
        private static List<string> listContent = new List<string>();
        private static List<string> urlList = new List<string>();
        private static string title;
        private static bool isSeleteOne = false;
        private static int dateNowMinute = DateTime.Now.Minute;
        private static string iPAgencyAddress = AppDomain.CurrentDomain.BaseDirectory + "/XmlConfig/IPAgency.txt";
        public static Dictionary<string, string> formDataDict;
        /// <summary>
        /// 初始化方法
        /// </summary>
        public static void GetIp(IEnumerable<string> ipList = null, bool isIpAgency = true)
        {
            if (isIpAgency)
            {
                string configFile = AppDomain.CurrentDomain.BaseDirectory + "/XmlConfig/UrlData.xml";
                var urlDataList = CommonHelper.ConvertXMLToObject<IPEntity>(configFile, "UrlSetting");
                var list = from a in urlDataList
                           select a.Url;
                //代理IP池
                GetIPData(list.ToList(), "ip", iPAgencyAddress);
            }

            //爬取ip池
            if (ipList == null || ipList.Count() <= 0)
                ipList = new List<string> {
            "http://fenxi.zgzcw.com/1766186/dxdb/zhishu?company_id=8&company=Bet365",//大小指数-实时
            "http://fenxi.zgzcw.com/1766186/bjop/zhishu?company_id=115&company=%E5%A8%81%E5%BB%89%E5%B8%8C%E5%B0%94",//欧赔指数-实时
            "http://fenxi.zgzcw.com/1766186/ypdb/zhishu?company_id=1&company=%E6%BE%B3%E9%97%A8",//亚盘指数-实时
            "http://fenxi.zgzcw.com/2413445/dxdb5",//大小指数-固化
            "http://fenxi.zgzcw.com/2413445/bjop",//欧赔指数-固化
            "http://fenxi.zgzcw.com/2413445/ypdb",//亚盘指数-固化
            "http://saishi.zgzcw.com/soccer/team/25",//球队介绍
            "http://saishi.zgzcw.com/soccer",//赛事
            "http://saishi.zgzcw.com/soccer/league/36/2018-2019/sxpl",//上下盘
            "http://saishi.zgzcw.com/soccer/league/36/2018-2019/sxds",//上下单双
            "http://saishi.zgzcw.com/soccer/league/36/2018-2019/jqds",//总进球单双
            "http://saishi.zgzcw.com/soccer/league/36/2018-2019/ssb",//射手榜
            "http://saishi.zgzcw.com/soccer/league/36/2018-2019",//积分榜
            "http://saishi.zgzcw.com/soccer/league/36",//球队,分组，比赛
            "http://cp.zgzcw.com/lottery/zucai/14csfc/index.jsp",//14场
            "http://cp.zgzcw.com/lottery/zucai/6cbqc/index.jsp",//6场
            "http://cp.zgzcw.com/lottery/zucai/4cjqc/index.jsp",//4场
            "http://live.zgzcw.com/jz/",//竞彩
            "http://live.zgzcw.com/bd/",//北单
            "http://live.zgzcw.com/sfc/",//足彩
            "http://fenxi.zgzcw.com/2404696/zrtj",//阵容
            "http://saishi.zgzcw.com/soccer/player/4369",//球员
                        };
            GetIPData(ipList.ToList());
        }
        private static void GetIPData(List<string> _urlList, string _title = "", string path = "")
        {

            if (_urlList.Count <= 0)
                urlList.Add(ConfigurationManager.AppSettings["TestUrl"].ToString());
            else
                urlList = _urlList;
            title = _title;
            Trace.WriteLine("开始更新IP代理池！请稍后");
            string configFile = AppDomain.CurrentDomain.BaseDirectory + "/XmlConfig/UrlData.xml";
            var urlData = CommonHelper.ConvertXMLToObject<IPEntity>(configFile, "UrlSetting");
            urlData.ForEach(p =>
            {
                Task.Run(() => GetIp(p));

            });
            Thread.Sleep(300000);
            lock (locker)
            {
                while (finishcount != threadCount)
                {
                    Thread.Sleep(5000);
                    Trace.WriteLine("已执行线程：" + finishcount + "||剩余线程：" + (threadCount - finishcount) + "可用IP数：" + list.Count);
                    Monitor.Wait(locker);//等待
                }
            }

            Trace.WriteLine("IP代理池更新完毕！可用IP:" + list.Count);
            if (path.IsEmpty())
                path = AppDomain.CurrentDomain.BaseDirectory + "/XmlConfig/IP.txt";
            if (list.Count > 0)
                CommonHelper.Write_IP(path, JsonConvert.SerializeObject(list.Distinct().ToList()));
        }
        public static string GetIPDataBYOne_FormData(List<string> _urlList, Dictionary<string, string> formData, string _title = "")
        {
            InitIPHelper();
            formDataDict = formData;
            return GetIPDataBYOne(_urlList, _title, true);
        }
        public static string GetIPDataBYOne(List<string> _urlList, string _title = "", bool isFormData = false)
        {
            if (!isFormData)
                InitIPHelper();
            isSeleteOne = true;
            if (_urlList.Count <= 0)
                urlList.Add(ConfigurationManager.AppSettings["TestUrl"].ToString());
            else
                urlList = _urlList;
            title = _title;
            Trace.WriteLine("获取单个IP！请稍后");
            string configFile = AppDomain.CurrentDomain.BaseDirectory + "/XmlConfig/UrlData.xml";
            var urlData = CommonHelper.ConvertXMLToObject<IPEntity>(configFile, "UrlSetting");
            urlData.ForEach(p =>
            {
                Task.Run(() => GetIp(p));

            });
            var content = string.Empty;
            dateNowMinute = DateTime.Now.Minute;
            while (true)
            {

                if (list.Count >= 1)
                {
                    lock (locker)
                    {
                        content = listContent[0];
                        break;
                    }
                }
                else
                {
                    var minute = DateTime.Now.Minute;
                    var poor = dateNowMinute > minute ? minute + 60 - dateNowMinute : minute - dateNowMinute;
                    if (poor > 3 || finishcount > 2000)
                    {
                        if (finishcount == threadCount || finishcount > 2000)
                            break;
                    }
                }


            }
            return content;
        }

        public static void InitIPHelper()
        {
            formDataDict = null;
            finishcount = 0;
            threadCount = 0;
            list = new List<string>();
            listContent = new List<string>();
            urlList = new List<string>();
            dateNowMinute = DateTime.Now.Minute;
        }

        /// <summary>
        /// 代理
        /// </summary>
        /// <param name="DATA"></param>
        private static void GetIp(IPEntity model)
        {
            for (int i = 0; i < model.Number; i++)
            {
                var _url = model.Url;
                if (model.Number != 1)
                {
                    if (model.Url.Split('?').Length > 1)
                        _url = model.Url + "&" + model.PageName + "=" + (i + 1);
                    else
                        _url = model.Url + (i == 0 ? string.Empty : "/" + (i + 1));

                }
                var doc = new HtmlDocument();
                if (isSeleteOne && list.Count > 0)
                    return;
                doc.LoadHtml(TestIp(new Uri(_url), CommonHelper.GetIp(iPAgencyAddress, false)));
                while (string.IsNullOrEmpty(doc.DocumentNode.InnerHtml))
                {
                    if (isSeleteOne && list.Count > 0)
                        return;
                    doc.LoadHtml(TestIp(new Uri(_url), CommonHelper.GetIp(iPAgencyAddress, false)));
                }

                var parents = model.SelectParents.Split(',').ToList();
                var trparents = doc.DocumentNode.SelectSingleNode(parents[0]);
                while (trparents == null)
                {
                    if (isSeleteOne && list.Count > 0)
                        return;
                    doc.LoadHtml(TestIp(new Uri(_url), CommonHelper.GetIp(iPAgencyAddress, false)));
                    trparents = doc.DocumentNode.SelectSingleNode(parents[0]);
                }
                var tr = trparents.SelectNodes(parents[1]);

                threadCount += tr.Count - 1;
                foreach (HtmlNode item in tr)
                {
                    if (tr.IndexOf(item) != 0)
                    {

                        var td = item.SelectNodes(model.SelectParent);
                        //if (model.AnonymityPath != -1)
                        //    if (td[model.AnonymityPath].InnerText.IndexOf("匿") != -1)
                        //        continue;
                        var path = model.SelectPath.Split(',').ToList();
                        var ip = td[int.Parse(path[0])].InnerText + ":" + td[int.Parse(path[1])].InnerText;
                        if (isSeleteOne && list.Count > 0)
                            return;
                        SetData(ip);
                    }
                }
            }


        }

        /// <summary>
        /// 异步创建爬虫
        /// </summary>
        /// <param name="uri">爬虫URL地址</param>
        /// <param name="proxy">代理服务器</param>
        /// <returns>网页源代码</returns>
        public static string TestIp(Uri uri, string proxy = null)
        {
            var pageSource = string.Empty;
            try
            {
                var watch = new Stopwatch();
                watch.Start();
                var request = (HttpWebRequest)WebRequest.Create(uri);
                request.Accept = "text/html, */*; q=0.01";
                request.ServicePoint.Expect100Continue = false;//加快载入速度
                request.ServicePoint.UseNagleAlgorithm = false;//禁止Nagle算法加快载入速度
                request.AllowWriteStreamBuffering = false;//禁止缓冲加快载入速度
                request.Headers.Add(HttpRequestHeader.AcceptEncoding, "gzip,deflate");//定义gzip压缩页面支持
                request.ContentType = "text/html;charset=UTF-8";//定义文档类型及编码
                request.AllowAutoRedirect = false;//禁止自动跳转
                                                  //设置User-Agent，伪装成Google Chrome浏览器
                request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.62 Safari/537.36";
                request.Timeout = 5000;//定义请求超时时间为5秒
                request.KeepAlive = true;//启用长连接
                request.Method = "GET";//定义请求方式为GET
                request.ReadWriteTimeout = 10000;

                if (proxy != null) request.Proxy = new WebProxy(proxy);//设置代理服务器IP，伪装请求地址
                                                                       //request.CookieContainer = this.CookiesContainer;//附加Cookie容器
                request.ServicePoint.ConnectionLimit = int.MaxValue;//定义最大连接数

                using (var response = (HttpWebResponse)request.GetResponse())
                {//获取请求响应

                    // foreach (Cookie cookie in response.Cookies) this.CookiesContainer.Add(cookie);//将Cookie加入容器，保存登录状态

                    if (response.ContentEncoding.ToLower().Contains("gzip"))//解压
                    {
                        using (GZipStream stream = new GZipStream(response.GetResponseStream(), CompressionMode.Decompress))
                        {
                            using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
                            {
                                pageSource = reader.ReadToEnd();
                            }
                        }
                    }
                    else if (response.ContentEncoding.ToLower().Contains("deflate"))//解压
                    {
                        using (DeflateStream stream = new DeflateStream(response.GetResponseStream(), CompressionMode.Decompress))
                        {
                            using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
                            {
                                pageSource = reader.ReadToEnd();
                            }

                        }
                    }
                    else
                    {
                        using (Stream stream = response.GetResponseStream())//原始
                        {
                            using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
                            {
                                pageSource = reader.ReadToEnd();
                            }
                        }
                    }
                }
                request.Abort();
                watch.Stop();
                var threadId = System.Threading.Thread.CurrentThread.ManagedThreadId;//获取当前任务线程ID
                var milliseconds = watch.ElapsedMilliseconds;//获取请求执行时间
                return pageSource;

            }
            catch (Exception ex)
            {
                //Trace.WriteLine("连接失败：" + proxy + "||" + ex.Message);
                return string.Empty;
            }
        }

        public static string TestIpFormDta(string uri, string proxy = null)
        {
            var pageSource = string.Empty;
            try
            {
                var watch = new Stopwatch();
                watch.Start();
                var request = (HttpWebRequest)WebRequest.Create(uri);
                request.Accept = "text/html, */*; q=0.01";
                request.ServicePoint.Expect100Continue = false;//加快载入速度
                request.ServicePoint.UseNagleAlgorithm = false;//禁止Nagle算法加快载入速度
                request.AllowWriteStreamBuffering = false;//禁止缓冲加快载入速度
                request.Headers.Add(HttpRequestHeader.AcceptEncoding, "gzip,deflate");//定义gzip压缩页面支持
                request.ContentType = "application/x-www-form-urlencoded";//定义文档类型及编码
                request.AllowAutoRedirect = false;//禁止自动跳转
                                                  //设置User-Agent，伪装成Google Chrome浏览器
                request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.62 Safari/537.36";
                request.Timeout = 5000;//定义请求超时时间为5秒
                request.KeepAlive = true;//启用长连接
                request.Method = "Post";//定义请求方式为GET
                request.ReadWriteTimeout = 10000;

                if (proxy != null) request.Proxy = new WebProxy(proxy);//设置代理服务器IP，伪装请求地址
                                                                       //request.CookieContainer = this.CookiesContainer;//附加Cookie容器
                request.ServicePoint.ConnectionLimit = int.MaxValue;//定义最大连接数

                string boundary = "----------------------------" + DateTime.Now.Ticks.ToString("x");
                request.ContentType = "multipart/form-data; boundary=" + boundary;
                //验证在得到结果时是否有传入数据
                if (!request.Method.Trim().ToLower().Contains("get"))
                {

                    MemoryStream stream = new MemoryStream();
                    string format = "--" + boundary + "\r\nContent-Disposition:form-data;name=\"{0}\"\r\n\r\n{1}\r\n";    //自带项目分隔符
                    foreach (string key in formDataDict.Keys)
                    {
                        string s = string.Format(format, key, formDataDict[key]);
                        byte[] data = Encoding.UTF8.GetBytes(s);
                        stream.Write(data, 0, data.Length);
                    }

                    byte[] foot_data = Encoding.UTF8.GetBytes("--" + boundary + "--\r\n");      //项目最后的分隔符字符串需要带上--  
                    stream.Write(foot_data, 0, foot_data.Length);
                    request.ContentLength = stream.Length;
                    Stream requestStream = request.GetRequestStream(); //写入请求数据
                    stream.Position = 0L;
                    stream.CopyTo(requestStream);
                    stream.Close();
                }
                using (var response = (HttpWebResponse)request.GetResponse())
                {//获取请求响应

                    // foreach (Cookie cookie in response.Cookies) this.CookiesContainer.Add(cookie);//将Cookie加入容器，保存登录状态

                    if (response.ContentEncoding.ToLower().Contains("gzip"))//解压
                    {
                        using (GZipStream stream = new GZipStream(response.GetResponseStream(), CompressionMode.Decompress))
                        {
                            using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
                            {
                                pageSource = reader.ReadToEnd();
                            }
                        }
                    }
                    else if (response.ContentEncoding.ToLower().Contains("deflate"))//解压
                    {
                        using (DeflateStream stream = new DeflateStream(response.GetResponseStream(), CompressionMode.Decompress))
                        {
                            using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
                            {
                                pageSource = reader.ReadToEnd();
                            }

                        }
                    }
                    else
                    {
                        using (Stream stream = response.GetResponseStream())//原始
                        {
                            using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
                            {
                                pageSource = reader.ReadToEnd();
                            }
                        }
                    }
                }
                request.Abort();
                watch.Stop();
                var threadId = System.Threading.Thread.CurrentThread.ManagedThreadId;//获取当前任务线程ID
                var milliseconds = watch.ElapsedMilliseconds;//获取请求执行时间
                return pageSource;

            }
            catch (Exception ex)
            {
                //Trace.WriteLine("连接失败：" + proxy + "||" + ex.Message);
                return string.Empty;
            }
        }

        /// <summary>
        /// 获取数据
        /// </summary>
        /// <param name="ip"></param>
        /// <returns></returns>
        private static async Task<string> SetData(string ip)
        {
            return await Task.Run(() =>
            {
                Thread.Sleep(100);
                try
                {
                    if (isSeleteOne && list.Count > 0)
                    { }
                    else
                    {
                        var url = urlList[new Random().Next(0, urlList.Count)];
                        Trace.WriteLine("url:" + url);
                        var html = "";
                        if (formDataDict != null)
                            html = TestIpFormDta(url, ip);
                        else
                            html = TestIp(new Uri(url), ip);
                        var doc = new HtmlDocument();
                        if (!string.IsNullOrEmpty(html))
                        {
                            doc.LoadHtml(html);
                            var body = doc.DocumentNode.SelectNodes(".//body");
                            if ((formDataDict == null && (body == null || string.IsNullOrEmpty(body[0].InnerHtml))) || (html.Contains("403") && html.ToLower().Contains("forbidden"))
                    || (html.Contains("404") && html.ToLower().Contains("not found"))
                    || (!string.IsNullOrEmpty(title) && !html.ToLower().Contains(title)))
                            {
                            }
                            else
                            {
                                if (isSeleteOne && list.Count > 0)
                                    return string.Empty;
                                lock (locker)
                                {
                                    list.Add(ip);
                                    if (isSeleteOne)
                                        listContent.Add(html);
                                }
                                Trace.WriteLine("连接成功：" + ip);
                                Console.WriteLine(ip);
                            }
                        }
                        else
                        {
                            //Trace.WriteLine("连接失败：" + ip);
                        }
                    }
                }
                catch (Exception)
                {
                }
                finally
                {
                    lock (locker)
                    {
                        finishcount++;
                        Monitor.Pulse(locker); //完成，通知等待队列,告知已完，执行下一个。
                    }
                }
                return string.Empty;
            });

        }

    }

    public class IPEntity
    {
        /// <summary>
        /// 父节点，，也就是ip的父节点
        /// 最后一个为SelectNodes，之前的为SelectSingleNode
        /// </summary>
        public string SelectParents { get; set; }
        /// <summary>
        /// 路径
        /// </summary>
        public string Url { get; set; }

        /// <summary>
        /// 上一级的名称（td||th）
        /// </summary>
        public string SelectParent { get; set; } = "td";

        /// <summary>
        /// 最终Ip的路径 （ip和host）
        /// </summary>
        public string SelectPath { get; set; }
        /// <summary>
        /// 查询页数
        /// </summary>
        public int Number { get; set; }
        /// <summary>
        /// 匿名路径
        /// </summary>
        public int AnonymityPath { get; set; } = -1;
        /// <summary>
        /// 分页参数名称
        /// </summary>
        public string PageName { get; set; }
    }
}