using IP2Region;
using ProtoCSStruct;
using Sog;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Realmlist
{
    public static class RecommendRealmByIP
    {
        private static DbSearcher m_search;
        private static Dictionary<string, string> cache = new Dictionary<string, string>();
        public static void OnReloadConfig()
        {
            cache.Clear();
            foreach (var item in CountryAreaNameMapDescMgr.Instance.ItemTable.Values)
            {
                if(!cache.ContainsKey(item.name))
                {
                    cache.Add(item.name, item.areaName);
                    TraceLog.Debug("RecommendRealmByIP.OnReloadConfig name {0} area {1} timezone {2}", item.name, item.areaName,item.timezone);
                }              
            }
        }
        public static void TestIp()
        {
            var cur = DateTime.Now;
            
            Test("60.246.49.9");
            Test("119.28.228.38");
            Test("175.97.158.95");
            Test("183.192.62.65");
            Test("66.249.65.56");
            Test("127.0.0.1");
            Test("192.168.1.60");
            Test("162.125.32.9");
            Test("84.170.88.33");
            Test("80.141.135.243");
            Test("185.5.70.217");
            Test("110.138.168.102");
            Test("188.106.62.74");
            Test("189.40.102.157");
            Test("139.47.118.213");
            Test("178.168.216.84");
            Test("175.97.158.95");
            Test("180.244.130.43");
            Test("116.206.31.84");
            Test("175.176.69.190");
            Test("140.213.204.147");
            Test("136.158.57.132");
            Test("45.89.89.181");
            Test("50.116.43.86");
            Test("165.186.33.33");
            Test("43.229.44.44");
            Test("61.13.55.55");
            Test("12.63.184.204");
            Test("216.244.208.11");
            Test("15.15.15.15");
            Test("57.57.57.57");
            Test("62.184.8.32");
            Test("194.112.177.132");
            Test("202.41.41.41");
            Test("62.32.33.33");
            Test("62.16.64.44");
            Test("194.117.107.65");
            Test("19.203.239.31");
            Test("193.188.48.55");
            Test("41.32.22.22");
            Test("5.134.92.4");
            Test("1.128.11.11");
            Test("31.13.194.11");
            Test("2.56.68.55");
            Test("210.52.109.11");
            Test("17.253.106.33");
            Test("23.37.96.33");
            Test("190.15.144.44");
            Test("2.21.243.33");
            Test("43.231.64.44");
            Test("57.87.144.44");
            Test("45.85.4.44");
            Test("1.9.114.33");
            Test("103.29.199.11");
            Test("43.245.116.44");
            Test("45.231.32.33");
            Test("23.204.128.33");
            Test("103.38.236.33");
            Test("41.78.208.33");
            Test("81.199.131.22");
            Test("5.43.48.208");
            Test("2.21.192.11");
            Test("5.153.112.22");
            Test("1.0.182.224");
            Test("5.44.80.11");
            Test("64.76.65.11");
            Test("2.58.116.11");
            Test("45.66.40.11");
            Test("27.252.48.11");
            Test("5.63.204.44");
            Test("94.102.80.55");
            Test("37.238.224.44");
            Test("5.226.48.55");
            Test("37.61.230.55");
            Test("2.32.4.33");
            Test("1.52.69.160");
            Test("45.167.192.44");
            Test("1.22.57.44");
            Test("11.191.39.11");
            Test("31.12.128.44");
            Test("46.150.192.11");
            Test("102.143.128.11");
            Test("45.15.44.11");
            Test("1.33.88.44");
            Test("2.148.100.33");
            Test("102.64.124.11");
            Test("45.219.255.11");
            Test("103.68.139.11");
            Test("78.141.128.11");
            Test("157.119.180.11");
            Test("91.102.232.11");
            Test("8.40.30.11");
            Test("13.88.224.11");
            Test("94.102.234.11");
            Test("181.189.224.11");
            Test("196.49.10.11");
            Test("169.159.208.11");
            Test("196.223.144.11");
            Test("183.81.132.11");
            Test("190.52.48.11");
            Test("89.104.128.11");
            Test("23.251.128.11");
            Test("138.186.12.11");
            Test("82.163.96.11");
            Test("43.245.128.11");
            Test("23.210.60.11");
            Test("46.226.136.11");
            Test("23.223.204.11");
            Test("103.53.16.11");
            Test("192.245.148.11");
            Test("91.226.220.11");
            Test("88.151.192.11");
            Test("169.239.132.11");
            Test("17.253.114.11");
            Test("14.13.176.11");
            Test("218.184.11.22"); 
            Test("83.40.189.11"); 
            Test("66.91.192.253");  
            Test("64.140.149.70");
            Test("181.42.29.193");
            Test("179.9.191.155");
            TraceLog.Debug("RecommendRealmByIP.OnTickTest Cost Time {0} ms", (DateTime.Now - cur).TotalMilliseconds);
        }
        private static void Test(string ip)
        {
            string country, city;
            TraceLog.Debug("RecommendRealmByIP.Test ip {0} region {1} realm {2}", ip, GetRegionByIP(ip), GetRealmInfoByIP(ip, out country, out city));
        }
        private static string GetRegionByIP(string ip)
        {
            if(string.IsNullOrEmpty(ip))
            {
                return null;
            }

            try
            {
                if (m_search == null)
                {
                    string filePath = @"../cfg/sog/ip2region.db";
                    if (!File.Exists(filePath))
                    {
                        TraceLog.Error("RecommendRealmByIP.GetRegionByIP not find file {0}", filePath);
                        return null;
                    }
                    m_search = new DbSearcher(filePath);
                }
                return m_search.MemorySearch(ip)?.Region;
            }
            catch (Exception e)
            {
                TraceLog.Error("RecommendRealmByIP.GetRegionByIP Exception:{0}", e.Message);
                TraceLog.Error("RecommendRealmByIP.GetRegionByIP Exception StackTrace:{0}", e.StackTrace);
                return null;
            }        
        }
        public static AreaRealm GetAreaByIP(string ip)
        {
            string country, city;
            var areaName = GetRealmInfoByIP(ip, out country, out city);
            //测试代码
            //if (ip == "192.168.1.189")
            //{
            //    areaName = "NA";
            //}
            if (string.IsNullOrEmpty(areaName))
            {
                areaName = "Asia";
                TraceLog.Error("RecommendRealmByIP.GetAreaByIP not config area region info ,ip {0} country {1} city {2}", ip, country, city);
               // return null;
            }
            if(RealmlistSvc.areaDict.ContainsKey(areaName))
            {
                return RealmlistSvc.areaDict[areaName];
            }         
            return null;
        }

        public static void GetIpCountry(string ip, out string country, out string city)
        {
            city = string.Empty;
            country = string.Empty;

            string region = GetRegionByIP(ip); //格式  中国|0|上海|上海市|移动
            if (region == null)
            {
                return;
            }
            string[] strs = region.Split("|");
            if (strs.Length >= 3)//城市
            {
                city = strs[2];
            }
            if (strs.Length >= 1)//国家
            {
                country = strs[0];
            }
        }

        //在返回给前端的list中的推荐服中,根据ip找到合适的推荐服
        private static string GetRealmInfoByIP(string ip, out string country, out string city)
        {
            GetIpCountry(ip, out country, out city); //格式  中国|0|上海|上海市|移动
            if(string.IsNullOrEmpty(country))
            {
                return null;
            }          

            string areaNameByCity = string.Empty;
            string areaNameByCountry = string.Empty;
            if(cache.ContainsKey(city))//城市
            {
                areaNameByCity = cache[city];
            }
            if (cache.ContainsKey(country))//国家
            {
                areaNameByCountry = cache[country];
            }

            TraceLog.Trace("RecommendRealmByIP.GetRealmInfoByIP ip {0} country {1} city {2} areaNameByCity {3} areaNameByCountry {4}",
                ip, country, city, areaNameByCity, areaNameByCountry);

            if (!string.IsNullOrEmpty(areaNameByCity))
            {
                return areaNameByCity;
            }
            else if (!string.IsNullOrEmpty(areaNameByCountry))
            {
                return areaNameByCountry;
            }

            return null;
        }
    }
}