package jforex.com.dukascopy.indicators;

import com.dukascopy.api.*;
import com.dukascopy.api.indicators.*;
import java.awt.*;

public class AskVolume implements IIndicator {
    private IndicatorInfo indicatorInfo;
    private InputParameterInfo[] inputParameterInfos;
    private OutputParameterInfo[] outputParameterInfos;
    private double[][][] inputs = new double[1][][];
    private double[][] outputs = new double[1][];
    
    public void onStart(IIndicatorContext context) {
        indicatorInfo = new IndicatorInfo("AskVolume", "Volume Indi Price", "Volumes", false, false, true, 1, 0, 1);

        inputParameterInfos = new InputParameterInfo[] {
            new InputParameterInfo("Input data Ask", InputParameterInfo.Type.PRICE) {{ setOfferSide(OfferSide.ASK);}}
        };
            
        outputParameterInfos = new OutputParameterInfo[] {
            new OutputParameterInfo("AskVolume", OutputParameterInfo.Type.DOUBLE, OutputParameterInfo.DrawingStyle.HISTOGRAM) {{ setColor(Color.RED);}}
        };
    }

    public IndicatorResult calculate(int startIndex, int endIndex) {
        
        //calculating startIndex taking into account lookback value
        if (startIndex - getLookback() < 0) {
            startIndex -= startIndex - getLookback();
        }
        
        int i, j;
        double bid_vol, ask_vol;
        for (i = startIndex, j = 0; i <= endIndex; i++, j++) {
            if(i >= inputs[0][4].length){ //not enough data for calculation on the given candle
                continue;
            }
            outputs[0][j] = inputs[0][4][i];
        }
        return new IndicatorResult(startIndex, j);
    }

    public IndicatorInfo getIndicatorInfo() {
        return indicatorInfo;
    }

    public InputParameterInfo getInputParameterInfo(int index) {
        if (index <= inputParameterInfos.length) {
            return inputParameterInfos[index];
        }
        return null;
    }

    public int getLookback() {
        return 0;
    }
    
    public int getLookforward() {
        return 0;
    }

    public OptInputParameterInfo getOptInputParameterInfo(int index) {
        return null;
    }

    public OutputParameterInfo getOutputParameterInfo(int index) {
        if (index <= outputParameterInfos.length) {
            return outputParameterInfos[index];
        }
        return null;
    }

    public void setInputParameter(int index, Object array) {
        inputs[index] = (double[][]) array;
    }

    public void setOptInputParameter(int index, Object value) {
    }

    public void setOutputParameter(int index, Object array) {
        outputs[index] = (double[]) array;
    }
}