feat(crypto): add ftx support

README.md

@@ -1,8 +1,8 @@
-# Excel Stock Price Extraction
+# Excel Stock/Crypto Price Extraction
 
-This repository provides an excel addin with user defined functions to scrape stock market data from Yahoo and Google Finance.
+This repository provides an excel addin with user defined functions to scrape stock market data from Yahoo and Google Finance, and Crypto data from FTX.
 
-We only support current price for Google Finance data source while the full list of fields supported for Yahoo Finance can be found below.
+We only support current price [CURRENT PRICE] for Google Finance and FTX data source while the full list of fields supported for Yahoo Finance can be found below.
 
 ![](excel-stock-webscrape-demo.gif)
 
@@ -55,6 +55,10 @@ Yahoo Finance Data Source
 Google Finance Data Source
 =bdp("goog",,"google") - Google's current price
 =bdp("aapl",,"google") - Apple's current price
+
+FTX Data Source
+=bdp("btc/usd",,"ftx") - BTC/USD's current price
+=bdp("btc-0924",,"ftx") - BTC/USD's September futures price
 ```
 
 List of available fields

StockScraper/StockScraper/MarketData/MdFtx.cs

@@ -0,0 +1,37 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using System.Net;
+using System.Net.Http;
+
+using Newtonsoft.Json;
+
+namespace StockScraper
+{
+    class MdFtx
+    {
+        private static readonly HttpClient _client = new HttpClient();
+        public static async Task<Dictionary<string, string>> GetQuoteSummary(string ticker)
+        {
+            // ftx ticker: btc-0924, btc/usd
+            ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
+            HttpResponseMessage response = await _client.GetAsync($"https://ftx.com/api/markets/{ticker}");
+
+            // Read the content.
+            string responseFromServer = await response.Content.ReadAsStringAsync();
+
+            // Augment the content.
+            dynamic obj = JsonConvert.DeserializeObject(responseFromServer);
+            Dictionary<string, string> quoteSummary;
+            if (obj.success == true)
+            {
+                var result = obj.result;
+                quoteSummary = result.ToObject<Dictionary<string, string>>();
+                quoteSummary.Add("CURRENT PRICE", quoteSummary["price"]);
+            }
+            else
+                throw new ArgumentException(obj["error"]);
+            return quoteSummary;
+        }
+    }
+}

StockScraper/StockScraper/Scraper.cs

@@ -2,6 +2,7 @@
 using AngleSharp.Io;
 using ExcelDna.Integration;
 using ExcelDna.Registration;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
@@ -10,7 +11,7 @@ namespace StockScraper
 {
 	public class Scraper
 	{
-		private static readonly List<string> AvailableFields = new List<string>()
+		private static readonly List<string> AVAILABLE_FIELDS = new List<string>()
 		{
 			"PREVIOUS CLOSE",
 			"CURRENT PRICE",
@@ -37,30 +38,41 @@ public class Scraper
 			"1Y TARGET EST"
 		};
 
-		[ExcelAsyncFunction(Description = "Grab latest Yahoo/Google finance market data of a single exchange traded ticker, such as the closing price, dividend yield etc., defaults to Yahoo finance.")]
+		[ExcelAsyncFunction(Description = "Grab latest Yahoo/Google finance or FTX market data of a single exchange traded ticker, such as the closing price, dividend yield etc., defaults to Yahoo finance and Current Price.")]
 		public static async Task<object> bdp(
-			[ExcelArgument(Name = "ticker", Description = "Yahoo/Google finance ticker. Example: \"es3.si\", \"goog\"")] string ticker,
+			[ExcelArgument(Name = "ticker", Description = "Yahoo/Google finance or FTX ticker. Example: \"es3.si\", \"goog\", \"btc/usd\", \"btc-0924\"")] string ticker,
 			[ExcelArgument(AllowReference = true, Name = "[field]", Description = "[Optional] Yahoo finance or Google fields. Example: \"previous close\", \"market cap\", \"yield\"")] string field,
-			[ExcelArgument(AllowReference = true, Name = "[source]", Description = "[Optional] Specify the Data Source, defaults to yahoo. Example: \"yahoo\", \"google\"")] string source
+			[ExcelArgument(AllowReference = true, Name = "[source]", Description = "[Optional] Specify the Data Source, defaults to yahoo. Example: \"yahoo\", \"google\", \"ftx\"")] string source
 
 		)
 		{
             var defaultField = "CURRENT PRICE";
 
 			field = field.ToUpper();
 			if (field.Length == 0) field = defaultField;
-			if (!AvailableFields.Contains(field)) return "#Invalid field"; // Validate user input
+			if (!AVAILABLE_FIELDS.Contains(field)) return "#Invalid field"; // Validate user input
 
 			if (source.Length==0) source = "yahoo";
-			if (!(source == "yahoo" | source == "google")) return "#Invalid data source"; // Validate user input
+			if (!(source == "yahoo" | source == "google" | source =="ftx")) return "#Invalid data source"; // Validate user input
 
-			if (source == "google" & field != defaultField) return "#Google finance currently only supports current price"; // Validate user input
+			if ((source == "google" | source == "ftx") & field != defaultField) return "#Google finance and FTX data sources currently only supports current price"; // Validate user input
 
 			Dictionary<string, string> quoteSummary;
-			if (source == "yahoo")
-				quoteSummary = await GetHTML(ticker);
-			else
-				quoteSummary = await GetHTMLGoogle(ticker);
+			switch (source)
+			{
+				case "yahoo":
+					quoteSummary = await GetHTML(ticker);
+					break;
+				case "google":
+					quoteSummary = await GetHTMLGoogle(ticker);
+					break;
+				case "ftx":
+					try	{ quoteSummary = await MdFtx.GetQuoteSummary(ticker);}
+					catch (ArgumentException e) { return e.Message; }
+					break;
+				default:
+					return "#Invalid data source";
+			}
 
 			if (double.TryParse(quoteSummary[field], out double res))
 			{
@@ -76,10 +88,9 @@ private static async Task<Dictionary<string, string>> GetHTML(string ticker)
 			var config = Configuration.Default.WithDefaultLoader();
 			var context = BrowsingContext.New(config);
 			var document = await context.OpenAsync($"https://sg.finance.yahoo.com/quote/{ticker}/");
-			float currentPx;
 
 			var quoteSummaryListItems = document.QuerySelectorAll("div[id='quote-summary'] td");
-			var quoteHeaderInfo = document.QuerySelectorAll("div[id='quote-header-info'] div span");
+            var quoteHeaderInfo = document.QuerySelectorAll("div[id='quote-header-info'] div span");
 
 			foreach (var item in quoteSummaryListItems.Select((sli, i) => new { Value = sli, Index = i }))
 			{
@@ -93,7 +104,7 @@ private static async Task<Dictionary<string, string>> GetHTML(string ticker)
 			{
 				// TODO: We should find a better identifier for current price instead if possible
 				var tmp = item.Value.InnerHtml;
-				if (float.TryParse(tmp, out currentPx))
+				if (float.TryParse(tmp, out float currentPx))
 				{
 					quoteSummary.Add("CURRENT PRICE", tmp);
 					break;

StockScraper/StockScraper/StockScraper.csproj

@@ -45,6 +45,9 @@
     <Reference Include="ExcelDna.Registration, Version=1.1.0.0, Culture=neutral, PublicKeyToken=f225e9659857edbe, processorArchitecture=MSIL">
       <HintPath>..\packages\ExcelDna.Registration.1.1.0\lib\net40\ExcelDna.Registration.dll</HintPath>
     </Reference>
+    <Reference Include="Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <HintPath>..\packages\Newtonsoft.Json.13.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
+    </Reference>
     <Reference Include="PresentationFramework" />
     <Reference Include="System" />
     <Reference Include="System.Core" />
@@ -63,6 +66,7 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="AddIn.cs" />
+    <Compile Include="MarketData\MdFtx.cs" />
     <Compile Include="Scraper.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
@@ -72,6 +76,7 @@
     <None Include="packages.config" />
     <None Include="Properties\ExcelDna.Build.props" />
   </ItemGroup>
+  <ItemGroup />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <Import Project="..\packages\ExcelDna.AddIn.1.1.1\build\ExcelDna.AddIn.targets" Condition="Exists('..\packages\ExcelDna.AddIn.1.1.1\build\ExcelDna.AddIn.targets')" />
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">

StockScraper/StockScraper/packages.config

@@ -5,6 +5,7 @@
   <package id="ExcelDna.Integration" version="1.1.0" targetFramework="net48" />
   <package id="ExcelDna.IntelliSense" version="1.3.0" targetFramework="net48" />
   <package id="ExcelDna.Registration" version="1.1.0" targetFramework="net48" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net48" />
   <package id="System.Runtime.CompilerServices.Unsafe" version="4.7.1" targetFramework="net48" />
   <package id="System.Text.Encoding.CodePages" version="4.7.1" targetFramework="net48" />
 </packages>