public override bool GetTickersInfo()
{
string text = string.Empty;
string address = "https://api.exmo.me/v1/pair_settings";
try {
text = GetDownloadString(address);
}
catch (Exception) {
return(false);
}
if (string.IsNullOrEmpty(text))
{
return(false);
}
Tickers.Clear();
Dictionary <string, object> res = null;
lock (JsonParser) {
res = (Dictionary <string, object>)JsonParser.Parse(text);
}
int index = 0;
foreach (string s in res.Keys)
{
ExmoTicker t = new ExmoTicker();
t.Index = index;
string[] curr = s.Split('_');
t.BaseCurrency = curr[1];
t.MarketCurrency = curr[0];
index++;
Tickers.Add(t);
}
return(true);
}
public bool UpdateTradesStatistic(ExmoTicker ticker, int count)
{
string text = string.Empty;
string address = string.Format("https://api.exmo.me/v1/trades/?pair={0}", ticker.MarketName);
try {
text = GetDownloadString(address);
if (text == null)
{
return(false);
}
}
catch (Exception) {
return(false);
}
Dictionary <string, object> res = null;
lock (JsonParser) {
res = (Dictionary <string, object>)JsonParser.Parse(text);
}
List <object> trades = (List <object>)res[ticker.MarketName];
if (trades.Count == 0)
{
ticker.TradeStatistic.Add(new TradeStatisticsItem()
{
Time = DateTime.Now
});
if (ticker.TradeStatistic.Count > 5000)
{
for (int i = 0; i < 100; i++)
{
ticker.TradeStatistic.RemoveAt(0);
}
}
return(true);
}
TradeStatisticsItem st = new TradeStatisticsItem();
st.MinBuyPrice = decimal.MaxValue;
st.MinSellPrice = decimal.MaxValue;
st.Time = DateTime.Now;
foreach (Dictionary <string, object> obj in trades)
{
TradeHistoryItem item = new TradeHistoryItem();
decimal amount = Convert.ToDecimal(obj["amount"]);
decimal price = Convert.ToDecimal(obj["price"]);
bool isBuy = obj["type"].ToString().Length == 3;
if (isBuy)
{
st.BuyAmount += amount;
st.MinBuyPrice = Math.Min(st.MinBuyPrice, price);
st.MaxBuyPrice = Math.Max(st.MaxBuyPrice, price);
st.BuyVolume += amount * price;
}
else
{
st.SellAmount += amount;
st.MinSellPrice = Math.Min(st.MinSellPrice, price);
st.MaxSellPrice = Math.Max(st.MaxSellPrice, price);
st.SellVolume += amount * price;
}
}
if (st.MinSellPrice == decimal.MaxValue)
{
st.MinSellPrice = 0;
}
if (st.MinBuyPrice == decimal.MaxValue)
{
st.MinBuyPrice = 0;
}
ticker.LastTradeId = Convert.ToInt64(((Dictionary <string, object>)trades.First())["trade_id"]);
ticker.LastTradeStatisticTime = DateTime.Now;
ticker.TradeStatistic.Add(st);
if (ticker.TradeStatistic.Count > 5000)
{
for (int i = 0; i < 100; i++)
{
ticker.TradeStatistic.RemoveAt(0);
}
}
return(true);
}
public bool UpdateArbitrageOrderBook(ExmoTicker ticker, int depth)
{
string text = string.Empty;
string address = string.Format("https://api.exmo.me/v1/order_book/?pair={0}", ticker.MarketName);
try {
text = GetDownloadString(address);
if (text == null)
{
return(false);
}
}
catch (Exception) {
return(false);
}
Dictionary <string, object> res = null;
lock (JsonParser) {
res = (Dictionary <string, object>)JsonParser.Parse(text);
}
res = (Dictionary <string, object>)res[ticker.MarketName];
List <object> bids = (List <object>)res["bid"];
List <object> asks = (List <object>)res["ask"];
ticker.OrderBook.GetNewBidAsks();
int index = 0;
OrderBookEntry[] list = ticker.OrderBook.Bids;
foreach (List <object> item in bids)
{
OrderBookEntry entry = list[index];
entry.Value = (decimal)(double.Parse((string)item.First()));
entry.Amount = (decimal)(double.Parse((string)item.Last()));
index++;
if (index >= list.Length)
{
break;
}
}
index = 0;
list = ticker.OrderBook.Asks;
foreach (List <object> item in asks)
{
OrderBookEntry entry = list[index];
entry.Value = (decimal)(double.Parse((string)item.First()));
entry.Amount = (decimal)(double.Parse((string)item.Last()));
index++;
if (index >= list.Length)
{
break;
}
}
ticker.OrderBook.UpdateEntries();
ticker.OrderBook.RaiseOnChanged(new OrderBookUpdateInfo()
{
Action = OrderBookUpdateType.RefreshAll
});
return(true);
}
