package stoppers;

import java.lang.*;
import java.io.*;
import main.BetterTokenizer;
import java.math.*;
import main.Cell;
import main.GeneralInput;
import main.Model;

public class MetaStripeStop extends SimpleStop	{
	
	SimpleStop [] 		stoppers = new SimpleStop[20];
	int					numStoppers=0;
	float				sMin=0.2f;		// higher is better
	float				sDif=5f;		// ratio between instripe and exstripe
	float 				threshold = (float) Math.exp(5.0);  // should be exp(sDif)	
	float 				interval=1f;
	boolean			scoreTimeOnly = false;  // in default mode score is multiple of integrated stripe score and time to lose stripe


	
	public MetaStripeStop()  {}
	
	protected void loadParameter(String info, BetterTokenizer tokenizer) throws Exception {
		if(info.equals("Interval")) { GeneralInput.nextToken(tokenizer); interval = (float)tokenizer.nval; }
		else if(info.equals("StripeThreshold")) { GeneralInput.nextToken(tokenizer); sMin = (float)tokenizer.nval; }
		else if(info.equals("StripeDifference")) { GeneralInput.nextToken(tokenizer); sDif = (float)tokenizer.nval; 
																					   threshold = (float) Math.exp((double) sDif);
												   }
		else if(info.equals("ScoreTimeOnly")) {  GeneralInput.nextToken(tokenizer); if(tokenizer.sval.equals("true"))  scoreTimeOnly = true;
									}
		else if(info.equals("Stopper"))  {
			StripeStop newStopper = new StripeStop();
			newStopper.init(model);
			newStopper.loadParameters(tokenizer);
			newStopper.stopTime = this.stopTime;
			newStopper.sMin = this.sMin;
			newStopper.sDif = this.sDif;
			newStopper.threshold = this.threshold;
			stoppers[numStoppers++] = newStopper;
			System.out.println("MetaStripeStop: new stopper loaded");
		}
		else super.loadParameter(info,tokenizer);
	}
	
	public boolean stop(float time) {
		
		boolean done = false;
		score = 0;
		
		if(time < lastTime + interval)	{	return false;	}
		if(done) return true;  
		if(time > stopTime)	 return done=true;	
		for(int i = 0; i < numStoppers; i++)  {
			if(stoppers[i].stop(time))  done = true;
			score += stoppers[i].getScore();
		}
		score = score/numStoppers;
		cumScore += score * (time - lastTime);
		lastTime = time;
		if(done)  {
			if(scoreTimeOnly)
				score = (-time);
			else
				score = -cumScore;
			return true;
		}
		else 
			return false;		
	}
		
		
	public void reset() {
		for(int i = 0; i < numStoppers; i++)  
			stoppers[i].reset();
		score = 0f;
		cumScore=0f;
		lastTime=0f;
	}
	
	public void initCells()  {
		for(int i = 0; i < numStoppers; i++)  
			stoppers[i].initCells();
	}
}