package com.emprogria;

import java.util.Properties;
import java.util.Scanner;

import org.easyrules.core.AnnotatedRulesEngine;

public class ProductRecommendationRules {
	private Properties actionResult = null;
	private AnnotatedRulesEngine rulesEngine = null;
	private AgeRule myAgeRule = null;
	private GenderRule myGenderRule = null;
	private RegionRule myRegionRule = null;
	private FinalRule myFinalRule = null;

	public ProductRecommendationRules() {
		this.rulesEngine = new AnnotatedRulesEngine();
		this.actionResult = new Properties();
	}

	public void defineRules(int age, int gender, int region, int city) {
		this.myAgeRule = new AgeRule(this.actionResult, age);
		this.myGenderRule = new GenderRule(this.actionResult, gender);
		this.myRegionRule = new RegionRule(this.actionResult, region, city);
		this.myFinalRule = new FinalRule(this.actionResult);

		this.rulesEngine.registerRule(this.myAgeRule);
		this.rulesEngine.registerRule(this.myGenderRule);
		this.rulesEngine.registerRule(this.myRegionRule);
		this.rulesEngine.registerRule(this.myFinalRule);
	}

	public void doRules() {
		this.rulesEngine.fireRules();
	}

	public boolean finalResult() {
		boolean OK = (this.actionResult.getProperty("FinalRule") == "3");
		return OK;
	}

	public void doneRules() {
		this.rulesEngine = null;
		this.actionResult = null;
	}

	public static void main(String[] args) {
		int age = -1;
		int gender = -1;
		int region = -1;
		int city = -1;

		Scanner scanner = new Scanner(System.in);

		System.out.println("Age ?");
		String pAge = scanner.nextLine();
		try {
			age = Integer.parseInt(pAge);
		} catch (Exception e) {
		}

		boolean OK = true;
		while (OK) {
			System.out.println("Gende: (0=All 1=M, 2=F) ?");
			String pGender = scanner.nextLine();
			try {
				gender = Integer.parseInt(pGender);
				if (gender >= 0 && gender <= 2) {
					break;
				}
			} catch (Exception e) {
			}
		}

		while (OK) {
			System.out.println("Region: (0=All 1=N 2=E, 3=S 4=W) ?");
			String pRegoin = scanner.nextLine();
			try {
				region = Integer.parseInt(pRegoin);
				if (region >= 0 && region <= 4) {
					break;
				}
			} catch (Exception e) {
			}
		}

		while (OK) {
			System.out
					.println("Add. City: (0=All 1=Taipei 2=Taoyuan 3=Taichung
                                                              4=Tainan 5=Kaohsiung 6=Hualian 7=Taidung) ?");
			String pCity = scanner.nextLine();
			try {
				city = Integer.parseInt(pCity);
				if (city >= 0 && city <= 7) {
					break;
				}
			} catch (Exception e) {
			}
		}

		scanner.close();

		ProductRecommendationRules myRules = new ProductRecommendationRules();
		myRules.defineRules(age, gender, region, city);
		myRules.doRules();

		if (myRules.finalResult()) {
			System.out.println("O");
		} else {
			System.out.println("X");
		}

		myRules.doneRules();
	}

}