package ai2020.group6;

import java.math.BigDecimal;

import geniusweb.inform.Settings;

/**
 * MAExponential accepts and generates bids above a threshold exponentially
 * decreasing as a function of time.
 * The threshold starts at the "upperThreshold" (defaulting to 1) and decreases
 * to the "lowerThreshold" (defaulting to 0) by scaling with (1-t)^e, where t is
 * the progress over time and e is the parameter "e" (defaulting to 1).
 * 
 * @author Group 6
 */
public class MAExponential extends MADefaultParty {

	@Override
	protected IAcceptanceStrategy getAccceptanceStrategy ( Settings settings ) {
		Object val = settings.getParameters().get("minPower");
		Integer minpower = (val instanceof Integer) ? (Integer) val : 2;
		val = settings.getParameters().get("maxPower");
		Integer maxpower = (val instanceof Integer) ? (Integer) val : Integer.MAX_VALUE;
		val = settings.getParameters().get("upperThreshold");
		Double upperThreshold = (val instanceof Double) ? (Double) val : 1.0;
		val = settings.getParameters().get("lowerThreshold");
		Double lowerThreshold = (val instanceof Double) ? (Double) val : 0.0;
		val = settings.getParameters().get("e");
		Double e = (val instanceof Double) ? (Double) val : 1.0;
		return new UtilityBasedAcceptanceStrategy(minpower, maxpower) {
			@Override
			public BigDecimal getUtilityThreshold ( MAState state ) {
				Double t = state.getProgressTime().doubleValue();
				Double scale = Math.pow(1-t, e);
				return BigDecimal.valueOf(lowerThreshold + scale * (upperThreshold - lowerThreshold));
			}
		};
	}

	@Override
	protected IBiddingStrategy getBiddingStrategy ( Settings settings ) {
		Object val = settings.getParameters().get("minPower");
		Integer minpower = (val instanceof Integer) ? (Integer) val : 2;
		val = settings.getParameters().get("maxPower");
		Integer maxpower = (val instanceof Integer) ? (Integer) val : Integer.MAX_VALUE;
		val = settings.getParameters().get("upperThreshold");
		Double upperThreshold = (val instanceof Double) ? (Double) val : 1.0;
		val = settings.getParameters().get("lowerThreshold");
		Double lowerThreshold = (val instanceof Double) ? (Double) val : 0.0;
		val = settings.getParameters().get("e");
		Double e = (val instanceof Double) ? (Double) val : 1.0;
		return new UtilityBasedBiddingStrategy(minpower, maxpower) {
			@Override
			public BigDecimal getUpperUtilityThreshold ( MAState state ) {
				return BigDecimal.valueOf(upperThreshold);
			}
			@Override
			public BigDecimal getLowerUtilityThreshold ( MAState state ) {
				Double t = state.getProgressTime().doubleValue();
				Double scale = Math.pow(1-t, e);
				return BigDecimal.valueOf(lowerThreshold + scale * (upperThreshold - lowerThreshold));
			}
		};
	}
	
	@Override
	protected IOptInStrategy getOptInStrategy ( Settings settings ) {
		return new NoOptInStrategy();
	}

	// @Override
	// protected IOpponentModel initNewOpponentModel ( Settings settings ) {
	// 	return new EmptyOpponentModel();
	// }

}