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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.strategies;

import org.ta4j.core.*;
import org.ta4j.core.analysis.criteria.TotalProfitCriterion;
import org.ta4j.core.indicators.helpers.*;
import org.ta4j.core.trading.rules.OverIndicatorRule;
import org.ta4j.core.trading.rules.UnderIndicatorRule;
import ta4jexamples.loaders.CsvTradesLoader;

/**
 * Strategies which compares current price to global extrema over a week.
 */
public class GlobalExtremaStrategy {

    // We assume that there were at least one trade every 5 minutes during the whole week
    private static final int NB_BARS_PER_WEEK = 12 * 24 * 7;

    /**
     * @param series a time series
     * @return a global extrema strategy
     */
    public static Strategy buildStrategy(TimeSeries series) {
        if (series == null) {
            throw new IllegalArgumentException("Series cannot be null");
        }

        ClosePriceIndicator closePrices = new ClosePriceIndicator(series);

        // Getting the max price over the past week
        MaxPriceIndicator maxPrices = new MaxPriceIndicator(series);
        HighestValueIndicator weekMaxPrice = new HighestValueIndicator(maxPrices, NB_BARS_PER_WEEK);
        // Getting the min price over the past week
        MinPriceIndicator minPrices = new MinPriceIndicator(series);
        LowestValueIndicator weekMinPrice = new LowestValueIndicator(minPrices, NB_BARS_PER_WEEK);

        // Going long if the close price goes below the min price
        MultiplierIndicator downWeek = new MultiplierIndicator(weekMinPrice, Decimal.valueOf("1.004"));
        Rule buyingRule = new UnderIndicatorRule(closePrices, downWeek);

        // Going short if the close price goes above the max price
        MultiplierIndicator upWeek = new MultiplierIndicator(weekMaxPrice, Decimal.valueOf("0.996"));
        Rule sellingRule = new OverIndicatorRule(closePrices, upWeek);

        return new BaseStrategy(buyingRule, sellingRule);
    }

    public static void main(String[] args) {

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

        // Building the trading strategy
        Strategy strategy = buildStrategy(series);

        // Running the strategy
        TimeSeriesManager seriesManager = new TimeSeriesManager(series);
        TradingRecord tradingRecord = seriesManager.run(strategy);
        System.out.println("Number of trades for the strategy: " + tradingRecord.getTradeCount());

        // Analysis
        System.out.println("Total profit for the strategy: " + new TotalProfitCriterion().calculate(series, tradingRecord));
    }
}