package geniusweb.exampleparties.simpleshaop;

import java.util.HashMap;
import java.util.Map.Entry;

import geniusweb.issuevalue.Bid;
import geniusweb.issuevalue.Domain;
import geniusweb.issuevalue.Value;

public class USpace {	
	
	// نگه داری وزن های ایشیوها
	private HashMap<String, Double> weights = new HashMap<String, Double>();
	
	private HashMap<String, HashMap<Value, Double>> evals = new HashMap<String, HashMap<Value,Double>>();
	
	private Domain domain;
	
	public USpace(Domain domain) {
		this.domain = domain;
		intitialize();
	}

	private void intitialize() {

		double w = 1.0/this.domain.getIssues().size();
		for ( String issue : this.domain.getIssues() ) {
			weights.put(issue, w);
			HashMap<Value, Double> hm = new HashMap<Value, Double>();;
			for ( Value val : this.domain.getValues(issue) ) {
				hm.put(val, 1.0);
			}
			evals.put(issue, hm);
		}
			
	}
	
	public Domain getDomain() {
		return domain;
	}
	
	public void setWeight(String issue, double w) {
		weights.replace(issue, w);
	}
	
	public void setEval(String issue, Value val, double eval) {
		
		//System.err.println( issue + ", "+ val +", "+eval );
		
		HashMap<Value, Double> hm = new HashMap<Value, Double>();
		hm.put(val, eval);
		for ( Value value : domain.getValues(issue) ) 
			if( !value.equals(val) )
				hm.put(value, evals.get(issue).get(value));
		
			
		evals.replace( issue, hm );
		
	}
	
	public HashMap<String, Double> getWeights() {
		return weights;
	}
	
	public HashMap<String, HashMap<Value, Double>> getEvals() {
		return evals;
	}
	
	public Double getWeight(String iss) {

		return weights.get(iss);

	}
	
	public HashMap<Value, Double> getValues(String issue) {
		
		return evals.get(issue);
		
	}
	
	public double getValue(String issue, Value val) {
		
		return evals.get(issue).get(val);
		
	}
	
	
	public double getUtility(Bid bid) {
		
		
		
		
		HashMap<String, Double> maxValOfIssue = new HashMap<String, Double>();
		for (String issue : domain.getIssues()) 
			for ( Value val : domain.getValues(issue) )
				maxValOfIssue.put(issue, 0.0);
		
		// پیدا کردن ماکزیمم ولیو برای هر ایشیو
		for (String issue : domain.getIssues()) 
			for ( Value val : domain.getValues(issue) )
				if ( getValue(issue, val) > maxValOfIssue.get(issue) )
					maxValOfIssue.replace(issue, getValue(issue, val));
		

		// نرمالایز کردن
		HashMap<String, HashMap<Value, Double>> evalsTemp = new HashMap<String, HashMap<Value,Double>>();
		for ( String issue : getEvals().keySet() ) {
			HashMap<Value, Double> valTemp = new HashMap<Value, Double>(); 
			for ( Value val : getValues(issue).keySet() ) {
				valTemp.put(val, (double)getValue(issue, val)/maxValOfIssue.get(issue) );
			}
			evalsTemp.put(issue, valTemp);
		}
				

		
		double u = 0;
		for ( Entry<String,Value> e : bid.getIssueValues().entrySet() ) 	
			u += weights.get(e.getKey())*evalsTemp.get(e.getKey()).get(e.getValue());
		
			
		return u;
		
 
		
	}
	
	
	
	public String toString() {
		
		String s = "[";
		for ( String w : weights.keySet() ) {
			s += w+ "=> W=" + weights.get(w)+"=>[";
			for ( Value val : evals.get(w).keySet() )
				s += val.toString() + "=" + evals.get(w).get(val)+", ";
		}
		s += "]";
		
		return s;
	}
	
	
	
	
	
	

}