BL3P.eu: added exchange support

ExchangeSharp.sln

@@ -1,4 +1,4 @@
-
+
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 15
 VisualStudioVersion = 15.0.27130.2027
@@ -16,6 +16,10 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "SolutionItems", "SolutionIt
 		LICENSE.txt = LICENSE.txt
 		logo.png = logo.png
 		README.md = README.md
+		.gitignore = .gitignore
+		.editorconfig = .editorconfig
+		.travis.yml = .travis.yml
+		azure-pipelines.yml = azure-pipelines.yml
 	EndProjectSection
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ExchangeSharpTests", "ExchangeSharpTests\ExchangeSharpTests.csproj", "{85BBD19C-5702-4394-BD7C-CE08309F6F49}"

ExchangeSharp/API/Exchanges/Bl3p/ExchangeBl3pAPI.cs

@@ -0,0 +1,85 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Newtonsoft.Json.Linq;
+
+// ReSharper disable once CheckNamespace
+namespace ExchangeSharp
+{
+	// ReSharper disable once InconsistentNaming
+	public sealed class ExchangeBL3PAPI : ExchangeAPI
+	{
+		public override string BaseUrl { get; set; } = "https://api.bl3p.eu/1/";
+
+		public ExchangeBL3PAPI()
+		{
+		}
+
+		public ExchangeBL3PAPI(ref string publicApiKey, ref string privateApiKey)
+		{
+			if (publicApiKey == null)
+				throw new ArgumentNullException(nameof(publicApiKey));
+			if (privateApiKey == null)
+				throw new ArgumentNullException(nameof(privateApiKey));
+
+			PublicApiKey = publicApiKey.ToSecureString();
+			publicApiKey = null;
+			PrivateApiKey = privateApiKey.ToSecureString();
+			privateApiKey = null;
+		}
+
+		protected override Task<IEnumerable<string>> OnGetMarketSymbolsAsync()
+		{
+			return Task.FromResult(new[]
+			{
+				// For now we only support these two coins
+				"BTCEUR",
+				"LTCEUR"
+			} as IEnumerable<string>);
+		}
+
+		protected override async Task<ExchangeTicker> OnGetTickerAsync(string marketSymbol)
+		{
+			var result = await MakeJsonRequestAsync<JObject>($"/{marketSymbol}/ticker");
+
+			return ParseTickerResponse(result, marketSymbol);
+		}
+
+		protected override Task<IEnumerable<KeyValuePair<string, ExchangeTicker>>> OnGetTickersAsync()
+		{
+			return Task.WhenAll(
+				OnGetTickerAsync("BTCEUR"),
+				OnGetTickerAsync("LTCEUR")
+			).ContinueWith(
+				r => r.Result.ToDictionary(t => t.MarketSymbol, t => t).AsEnumerable(),
+				TaskContinuationOptions.OnlyOnRanToCompletion
+			);
+		}
+
+		private ExchangeTicker ParseTickerResponse(JObject result, string marketSymbol)
+		{
+			if (result == null)
+				return null;
+
+			return new ExchangeTicker
+			{
+				Ask = result["ask"].ConvertInvariant<decimal>(),
+				Bid = result["bid"].ConvertInvariant<decimal>(),
+				Last = result["last"].ConvertInvariant<decimal>(),
+				Volume = new ExchangeVolume
+				{
+					Timestamp = CryptoUtility.UtcNow,
+					BaseCurrency = marketSymbol.Substring(0, 3),
+					BaseCurrencyVolume = result["volume"]["24h"].ConvertInvariant<decimal>()
+				},
+				MarketSymbol = marketSymbol
+			};
+		}
+
+		public partial class ExchangeName
+		{
+			public const string Bl3p = "BL3P";
+		}
+	}
+}

README.md

@@ -24,6 +24,7 @@ The following cryptocurrency exchanges are supported:
 | BitMEX           | x         | x           |   R   O   |
 | Bitstamp         | x         | x           |   R       |
 | Bittrex          | x         | x           | T R       |
+| BL3P             | x         |             |           |
 | Bleutrade        | x         | x           |           |
 | Coinbase         | x         | x           | T R       |
 | Digifinex        | x         | x           |   R B     |