Add OHLCV chart support for xeggex market

README.md

@@ -107,7 +107,7 @@ Table of Contents
     - [NonKyc](https://nonkyc.io)
     - [Poloniex](https://poloniex.com)
     - [SouthXchange](https://southxchange.com)
-    - [Xeggex](https://xeggex.com) *\*no chart support due to a lack of OHLCV api data*
+    - [Xeggex](https://xeggex.com)
     - [Yobit](https://yobit.io) *\*no chart support due to a lack of OHLCV api data*
   - **API:** A listing of available public API's that can be used to retrieve information from the network without the need for a local wallet. The following public API's are supported:
     - **RPC API calls** (Return data from coind)

lib/markets/xeggex.js

@@ -113,6 +113,43 @@ function get_orders(coin, exchange, api_error_msg, cb) {
   });
 }
 
+function get_chartdata(coin, exchange, api_error_msg, cb) {
+  const end = Date.now() / 1000;
+  const start = end - 86400;
+  const req_url = base_url + '/market/candles/?symbol=' + coin + '_' + exchange + '&from=' + parseInt(start).toString() + '&to=' + parseInt(end).toString() + '&resolution=15' ;
+
+  // pause for 2 seconds before continuing
+  rateLimit.schedule(function() {
+    request({uri: req_url, json: true}, function (error, response, body) {
+      if (error)
+        return cb(error, null);
+      else if (body == null || body == '' || typeof body !== 'object' || typeof body == 'string' || body instanceof String)
+        return cb(api_error_msg, null);
+      else if (body.error != null)
+        return cb((body.error.message != null ? body.error.message : api_error_msg), null);
+      else {
+        try {
+          let chartdata = [];
+
+          for (let c = 0; c < body.bars.length; c++) {
+            chartdata.push([
+              parseInt(body.bars[c].time),
+              parseFloat(body.bars[c].open) || 0,
+              parseFloat(body.bars[c].high) || 0,
+              parseFloat(body.bars[c].low) || 0,
+              parseFloat(body.bars[c].close) || 0
+            ]);
+          }
+
+          return cb(null, chartdata);
+        } catch(err) {
+          return cb(api_error_msg, null);
+        }
+      }
+    });
+  });
+}
+
 module.exports = {
   market_name: 'Xeggex',
   market_logo: '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',
@@ -124,9 +161,14 @@ module.exports = {
         get_trades(settings.coin, settings.exchange, settings.api_error_msg, function(trade_error, trades) {
           if (trade_error == null) {
             get_summary(settings.coin, settings.exchange, settings.api_error_msg, function(summary_error, stats) {
-              if (summary_error == null)
-                return cb(null, {buys: buys, sells: sells, trades: trades, stats: stats, chartdata: null});
-              else
+              if (summary_error == null) {
+                get_chartdata(settings.coin, settings.exchange, settings.api_error_msg, function (chart_error, chartdata) {
+                  if (chart_error == null)
+                    return cb(null, {buys: buys, sells: sells, trades: trades, stats: stats, chartdata: chartdata});
+                  else
+                    return cb(chart_error, null);
+                });
+              } else
                 return cb(summary_error, null);
             });
           } else

lib/settings.js

@@ -904,7 +904,6 @@ exports.markets_page = {
       "trading_pairs": [ "LTC/BTC" ]
     },
     // xeggex: a collection of settings that pertain to the xeggex exchange
-    //        NOTE: xeggex does not display a 24-hour chart due to a lack of OHLCV api data
     "xeggex": {
       // enabled: Enable/disable the xeggex exchange (true/false)
       //          If set to false, the xeggex page will be completely inaccessible and no market data will be downloaded for this exchange

settings.json.template

@@ -988,7 +988,6 @@
         "trading_pairs": [ "LTC/BTC" ]
       },
       // xeggex: a collection of settings that pertain to the xeggex exchange
-      //        NOTE: xeggex does not display a 24-hour chart due to a lack of OHLCV api data
       "xeggex": {
         // enabled: Enable/disable the xeggex exchange (true/false)
         //          If set to false, the xeggex page will be completely inaccessible and no market data will be downloaded for this exchange