namespace Easychart.Finance.DataClient
{
    using Easychart.Finance;
    using Easychart.Finance.DataProvider;
    using System;
    using System.Collections;
    using System.Runtime.CompilerServices;
    using System.Text.RegularExpressions;
    using System.Threading;

    public class YahooDataClient : DataClientBase
    {
        public event DataProgress OnProgress;

        public event StreamingDataChanged OnStreamingData;

        public event EventHandler OnStreamingStopped;

        public override void DownloadStreaming()
        {
            try
            {
                while (true)
                {
                    foreach (DataPacket packet in DataPacket.DownloadMultiFromYahoo(base.GetStreamingSymbol(",")))
                    {
                        if ((packet != null) && !packet.IsZeroValue)
                        {
                            if (base.UtcStreamingTime)
                            {
                                packet.Date = packet.Date.Date + packet.Date.AddHours(-packet.TimeZone).TimeOfDay;
                            }
                            if (this.OnStreamingData != null)
                            {
                                this.OnStreamingData(this, packet);
                            }
                        }
                    }
                    Thread.Sleep(0x1388);
                }
            }
            finally
            {
                if (this.OnStreamingStopped != null)
                {
                    this.OnStreamingStopped(this, new EventArgs());
                }
            }
        }

        public override CommonDataProvider GetData(string symbols, DataCycle dataCycle, DateTime startTime, DateTime endTime)
        {
            string format = "http://table.finance.yahoo.com/table.csv?s={0}&d={4}&e={5}&f={6}&g=d&a={1}&b={2}&c={3}&ignore=.csv";
            string uRL = string.Format(format, new object[] { symbols, startTime.Month - 1, startTime.Day, startTime.Year, endTime.Month - 1, endTime.Day, endTime.Year });
            byte[] data = base.DownloadBinary(symbols, uRL);
            return new YahooCSVDataManager().LoadYahooCSV(data);
        }

        public override DataPacket[] GetEodData(string Exchanges, string[] symbols, DateTime time)
        {
            string format = "http://table.finance.yahoo.com/table.csv?s={0}&d={4}&e={5}&f={6}&g=d&a={1}&b={2}&c={3}&ignore=.csv";
            DataPacket[] packetArray = new DataPacket[symbols.Length];
            DateTime time2 = time.AddDays(-1.0);
            for (int i = 0; i < symbols.Length; i++)
            {
                string symbol = symbols[i];
                string uRL = string.Format(format, new object[] { symbol, time2.Month - 1, time2.Day, time2.Year, time.Month - 1, time.Day, time.Year });
                byte[] data = base.DownloadBinary(symbol, uRL);
                packetArray[i] = new YahooCSVDataManager().LoadYahooCSV(data).GetLastPackage();
                if (this.OnProgress != null)
                {
                    this.OnProgress(this, new DataProgressArgs(symbol, i, symbols.Length));
                }
            }
            return packetArray;
        }

        public override string[] GetMarket()
        {
            return new string[] { "US=U.S. & Canada", "=World Markets" };
        }

        public override string[] GetStockType()
        {
            return new string[] { "S=Stocks", "E=ETF", "I=Indices", "M=Mutual Fund", "O=Options" };
        }

        public override string[] LookupSymbols(string Key, string Exchanges, string StockType, string Market)
        {
            if (StockType == null)
            {
                StockType = "";
            }
            if (Market == null)
            {
                Market = "";
            }
            MatchCollection matchs = Regex.Matches(base.DownloadString("http://finance.yahoo.com/l?s=" + Key + "&t=" + StockType + "&m=" + Market), "<TR bgcolor=#ffffff><TD><font face=arial size=-1><a href=(?<href>[^>]+)>(?<symbol>[^<]+)</a></font></TD><TD><font face=arial size=-1>(?<name>[^<]+)</font></TD><TD><font face=arial size=-1>(?<exchange>[^<]+)</font>", RegexOptions.IgnoreCase);
            ArrayList list = new ArrayList();
            foreach (Match match in matchs)
            {
                list.Add(match.Groups["symbol"].Value + ";" + match.Groups["name"].Value + ";" + match.Groups["exchange"].Value);
            }
            return (string[]) list.ToArray(typeof(string));
        }

        public override string DataFeedName
        {
            get
            {
                return "Yahoo finance";
            }
        }

        public override string Description
        {
            get
            {
                return "Provided by yahoo finance";
            }
        }

        public override string HomePage
        {
            get
            {
                return "http://finance.yahoo.com";
            }
        }

        public override bool IsFree
        {
            get
            {
                return true;
            }
        }

        public override int MaxSymbolsForStreaming
        {
            get
            {
                return 100;
            }
        }

        public override bool NeedLogin
        {
            get
            {
                return false;
            }
        }

        public override bool SupportEod
        {
            get
            {
                return false;
            }
        }

        public override bool SupportIntraday
        {
            get
            {
                return false;
            }
        }
    }
}