// Inverse Fisher Transformation crossing on CCI (using EMA smoothening)

// required indicators
var EMA = require('./EMA.js');
var TEMA = require('./TEMA.js');
var DEMA = require('./DEMA2.js');
var RSI = require('./RSI.js');
var Indicator = function(config) {
console.log("config",config);
  this.lastTrade ==''
  this.vh1Array = [0]
  this.vl1Array = [0]
  this.signals = []

  this.result ;

  this.vh1Array_size = 5//config.settings.vh1Array_size
  this.vl1Array_size = 8//config.settings.vl1Array_size
  this.signals_size = 8
  this.vh1 = new EMA(5)//config.vh1);
  this.vl1 = new EMA(8)//config.vl1);

  this.tema = new TEMA({weight:1});
  this.dema = new DEMA({weight1:8,weight2:5})
  this.rsi = new RSI({interval:7})

}

Indicator.prototype.update = function (candle) {

this.vl1Array.push((candle.high + candle.close)/2)
if(this.vl1Array.length==this.vl1Array_size+1) this.vl1Array.shift()

this.vh1Array.push((candle.low + candle.close)/2)
if(this.vh1Array.length==this.vh1Array_size+1) this.vh1Array.shift()

this.vh1.update(Math.max(...this.vh1Array))
this.vl1.update(Math.min(...this.vl1Array))

this.rsi.update(candle)
this.tema.update(candle.close)
this.dema.update(candle.close)
// signal should be an array.. for the is_call is_put logic to work...then almost done :)
const tema = this.tema.result
const dema = this.dema.result
const vh1 = this.vh1.result
const vl1 = this.vl1.result

const temp_signal =  tema > dema ? Math.max(vh1, vl1) : Math.min(vh1, vl1)

this.signals.push(temp_signal)
if(this.signals.length==this.signals_size+1) this.signals.shift()

const signals =this.signals
const signals_size = this.signals_size

buy_signal =((tema >dema) &&( signals[signals_size-1] > candle.low) && (signals[signals_size-1] -signals[signals_size-2]  > signals[signals_size-2] -signals[signals_size-3] ))

sell_signal  =((tema < dema )&& (signals[signals_size-1] < candle.low) && (signals[signals_size-2] -signals[signals_size-1]  > signals[signals_size-3]-signals[signals_size-1]  ))


if(buy_signal  && this.rsi.result >74){
    this.result = "buy"
    console.log("-----------------------------------------");
    console.log("BUYING ",candle.start.format('MMMM Do YYYY, HH:mm:ss'));

    console.log(candle.close,vh1,vl1,tema,dema,signals[signals_size-1]);
    console.log("-----------------------------------------");

}
else if(sell_signal ){
    this.result = "sell"
    console.log("-----------------------------------------");
console.log("SELLING ",candle.start.format('MMMM Do YYYY, HH:mm:ss'));

console.log(candle.close,vh1,vl1,tema,dema,signals[signals_size-1]);
console.log("-----------------------------------------");
}
// console.log("-----------------------------------------");
// console.log(candle.start.format('MMMM Do YYYY, HH:mm:ss'));

// console.log("-----------------------------------------");
else{
    this.result = "hold"
}

// if(candle.start.format('MMMM Do YYYY, h:mm:ss a')=="January 1st 2018, 8:00:00 pm")
// throw Error

// console.log(signals[signals_size-1], candle.low,)//(signals[signals_size] -signals[signals_size-2]  > signals[signals_size-1] -signals[signals_size-3] );

// if(sell_signal ==true || buy_signal==true) console.log("buy_signal",buy_signal,"sell_signal",sell_signal);




}


module.exports = Indicator;