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strategies/custom.js

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+// This is a basic example strategy for Gekko.
+// For more information on everything please refer
+// to this document:
+//
+// https://gekko.wizb.it/docs/strategies/creating_a_strategy.html
+//
+// The example below is pretty bad investment advice: on every new candle there is
+// a 10% chance it will recommend to change your position (to either
+// long or short).
+
+var log = require('../core/log');
+
+// Let's create our own strat
+var strat = {};
+
+// Prepare everything our method needs
+strat.init = function() {
+  this.input = 'candle';
+  this.currentTrend = 'long';
+  this.requiredHistory = 0;
+}
+
+// What happens on every new candle?
+strat.update = function(candle) {
+
+  // Get a random number between 0 and 1.
+  this.randomNumber = Math.random();
+
+  // There is a 10% chance it is smaller than 0.1
+  this.toUpdate = this.randomNumber < 0.1;
+}
+
+// For debugging purposes.
+strat.log = function() {
+  log.debug('calculated random number:');
+  log.debug('\t', this.randomNumber.toFixed(3));
+}
+
+// Based on the newly calculated
+// information, check if we should
+// update or not.
+strat.check = function() {
+
+  // Only continue if we have a new update.
+  if(!this.toUpdate)
+    return;
+
+  if(this.currentTrend === 'long') {
+
+    // If it was long, set it to short
+    this.currentTrend = 'short';
+    this.advice('short');
+
+  } else {
+
+    // If it was short, set it to long
+    this.currentTrend = 'long';
+    this.advice('long');
+
+  }
+}
+
+module.exports = strat;