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/**
 * The MIT License (MIT)
 *
 * Copyright (c) 2014-2017 Marc de Verdelhan & respective authors (see AUTHORS)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package ta4jexamples.indicators;

import eu.verdelhan.ta4j.TimeSeries;
import eu.verdelhan.ta4j.indicators.helpers.AverageTrueRangeIndicator;
import eu.verdelhan.ta4j.indicators.statistics.StandardDeviationIndicator;
import eu.verdelhan.ta4j.indicators.PPOIndicator;
import eu.verdelhan.ta4j.indicators.helpers.ClosePriceIndicator;
import eu.verdelhan.ta4j.indicators.helpers.PriceVariationIndicator;
import eu.verdelhan.ta4j.indicators.helpers.TypicalPriceIndicator;
import eu.verdelhan.ta4j.indicators.EMAIndicator;
import eu.verdelhan.ta4j.indicators.ROCIndicator;
import eu.verdelhan.ta4j.indicators.RSIIndicator;
import eu.verdelhan.ta4j.indicators.SMAIndicator;
import eu.verdelhan.ta4j.indicators.WilliamsRIndicator;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import ta4jexamples.loaders.CsvTradesLoader;

/**
 * This class builds a CSV file containing values from indicators.
 */
public class IndicatorsToCsv {

    public static void main(String[] args) {

        /**
         * Getting time series
         */
        TimeSeries series = CsvTradesLoader.loadBitstampSeries();

        /**
         * Creating indicators
         */
        // Close price
        ClosePriceIndicator closePrice = new ClosePriceIndicator(series);
        // Typical price
        TypicalPriceIndicator typicalPrice = new TypicalPriceIndicator(series);
        // Price variation
        PriceVariationIndicator priceVariation = new PriceVariationIndicator(series);
        // Simple moving averages
        SMAIndicator shortSma = new SMAIndicator(closePrice, 8);
        SMAIndicator longSma = new SMAIndicator(closePrice, 20);
        // Exponential moving averages
        EMAIndicator shortEma = new EMAIndicator(closePrice, 8);
        EMAIndicator longEma = new EMAIndicator(closePrice, 20);
        // Percentage price oscillator
        PPOIndicator ppo = new PPOIndicator(closePrice, 12, 26);
        // Rate of change
        ROCIndicator roc = new ROCIndicator(closePrice, 100);
        // Relative strength index
        RSIIndicator rsi = new RSIIndicator(closePrice, 14);
        // Williams %R
        WilliamsRIndicator williamsR = new WilliamsRIndicator(series, 20);
        // Average true range
        AverageTrueRangeIndicator atr = new AverageTrueRangeIndicator(series, 20);
        // Standard deviation
        StandardDeviationIndicator sd = new StandardDeviationIndicator(closePrice, 14);

        /**
         * Building header
         */
        StringBuilder sb = new StringBuilder("timestamp,close,typical,variation,sma8,sma20,ema8,ema20,ppo,roc,rsi,williamsr,atr,sd\n");

        /**
         * Adding indicators values
         */
        final int nbTicks = series.getTickCount();
        for (int i = 0; i < nbTicks; i++) {
            sb.append(series.getTick(i).getEndTime()).append(',')
            .append(closePrice.getValue(i)).append(',')
            .append(typicalPrice.getValue(i)).append(',')
            .append(priceVariation.getValue(i)).append(',')
            .append(shortSma.getValue(i)).append(',')
            .append(longSma.getValue(i)).append(',')
            .append(shortEma.getValue(i)).append(',')
            .append(longEma.getValue(i)).append(',')
            .append(ppo.getValue(i)).append(',')
            .append(roc.getValue(i)).append(',')
            .append(rsi.getValue(i)).append(',')
            .append(williamsR.getValue(i)).append(',')
            .append(atr.getValue(i)).append(',')
            .append(sd.getValue(i)).append('\n');
        }

        /**
         * Writing CSV file
         */
        BufferedWriter writer = null;
        try {
            writer = new BufferedWriter(new FileWriter("indicators.csv"));
            writer.write(sb.toString());
        } catch (IOException ioe) {
            Logger.getLogger(IndicatorsToCsv.class.getName()).log(Level.SEVERE, "Unable to write CSV file", ioe);
        } finally {
            try {
                if (writer != null) {
                    writer.close();
                }
            } catch (IOException ioe) {
            }
        }

    }
}