package uk.ac.leeds.sog.moses.agent;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Random;

import org.apache.log4j.Logger;

/**
 * @author Belinda
 *This class intialise the probability model for different age 
 *groups to generate the changes in formal care or death staue of a person. 
 */
public class ProbabilityModel {
	
	private static List s_listOfprobabilityByAgeGroup;
	
	private static Logger s_logger = Logger.getLogger(ProbabilityModel.class);
	
	private ProbabilityModel() {
	}
	//initialse the model
	public static void initialise() {
		// create age groups
		s_listOfprobabilityByAgeGroup = new ArrayList();
		s_listOfprobabilityByAgeGroup.add(new ProbabilityByAgeGroup(65, 75, 25, 25));
		s_listOfprobabilityByAgeGroup.add(new ProbabilityByAgeGroup(76, 85, 50, 50));
		s_listOfprobabilityByAgeGroup.add(new ProbabilityByAgeGroup(86, 95, 75, 75));
		s_listOfprobabilityByAgeGroup.add(new ProbabilityByAgeGroup(96, 100, 90, 90));
		s_listOfprobabilityByAgeGroup.add(new ProbabilityByAgeGroup(101, 999, 99, 99));
	}
	//method to check the formalCare staus for a person by 
	//applying the probability of formalCare in that age group
	public static boolean formalcare(Person a_person) {
		if(s_logger.isDebugEnabled()) {
			s_logger.debug("check formalCare status for person(PID): " + a_person.getPid() + "  age: " + a_person.getAge());
		}
		
		ProbabilityByAgeGroup probabilityGroup = null;
		int age = a_person.getAge();
		for(int i=0; i<s_listOfprobabilityByAgeGroup.size(); i++) {
			ProbabilityByAgeGroup group = (ProbabilityByAgeGroup) s_listOfprobabilityByAgeGroup.get(i);
			if(age >= group.getMinAge() && age <= group.getMaxAge()) {
				probabilityGroup = group;
				break;
			}
		}
		
		return probabilityGroup.formalcare();
	}
	//method to check the death staus for a person by 
	//applying the probability of formalCare in that age group
	public static boolean death(Person a_person) {
		if(s_logger.isDebugEnabled()) {
			s_logger.debug("check death status for person(PID): " + a_person.getPid() + "  age: " + a_person.getAge());
		}
		
		ProbabilityByAgeGroup probabilityGroup = null;
		int age = a_person.getAge();
		for(int i=0; i<s_listOfprobabilityByAgeGroup.size(); i++) {
			ProbabilityByAgeGroup group = (ProbabilityByAgeGroup) s_listOfprobabilityByAgeGroup.get(i);
			if(age >= group.getMinAge() && age <= group.getMaxAge()) {
				probabilityGroup = group;
				break;
			}
		}
		
		return probabilityGroup.death();
	}
}