package org.r3pek.pharmacies;

import java.util.ArrayList;

import org.xml.sax.Attributes;
import org.xml.sax.helpers.DefaultHandler;

public class XMLParserHandler extends DefaultHandler {
	private boolean inName = false;
	private boolean inAddress = false;
	private boolean inZipCode = false;
	private boolean inMunicipality = false;
	private boolean inLatitude = false;
	private boolean inLongitude = false;
	private boolean inPhone = false;
	private boolean inDistance = false;
	private boolean inIsAtService = false;
	private boolean inParish = false;
	private boolean error = false;
	private boolean inErrorMessage;
	private String errorMessage;
	
	private Pharmacy currentPharmacy;
	
	private ArrayList<Pharmacy> result;
	
	public XMLParserHandler() {
		result = new ArrayList<Pharmacy>();
	}
	
	private void checkTag(String tag, boolean newValue) {
		if ((tag.equals("GetPharmaciesByCoordinatesResponse") || tag.equals("GetPharmaciesAtServiceByCoordinatesResponse")) && newValue) {
			if (error) error = false;
			result.clear();
		} else if (tag.equals("Pharmacy")) {
			if (newValue)
				currentPharmacy = new Pharmacy();
			else 
				result.add(currentPharmacy);
		} else if (tag.equals("Name"))
			inName = newValue;
		else if (tag.equals("Street"))
			inAddress = newValue;
		else if (tag.equals("ZipCode"))
			inZipCode = newValue;
		else if (tag.equals("Municipality"))
			inMunicipality = newValue;
		else if (tag.equals("Latitude"))
			inLatitude = newValue;
		else if (tag.equals("Longitude"))
			inLongitude = newValue;
		else if (tag.equals("Phone"))
			inPhone = newValue;
		else if (tag.equals("Distance"))
			inDistance = newValue;
		else if (tag.equals("IsAtService"))
			inIsAtService = newValue;
		else if (tag.equals("Parish"))
			inParish = newValue;
		else if (tag.equals("Fault"))
			error = true;
		else if (tag.equals("FaultString"))
			inErrorMessage = newValue; 
	}
	
	public void startElement(String uri, String name, String qName, Attributes atts) {
		checkTag(name.trim(), true);
	}

	public void endElement(String uri, String name, String qName) {
		checkTag(name.trim(), false);
	}
	
	public void characters(char ch[], int start, int length) {
		String chars = (new String(ch).substring(start, start + length));
		
		if (inName)
			currentPharmacy.setName(currentPharmacy.getName() + chars);
		else if (inAddress)
			currentPharmacy.setAddress(currentPharmacy.getAddress() + chars);
		else if (inZipCode)
			currentPharmacy.setAddress(currentPharmacy.getAddress() + "\n" + chars);
		else if (inMunicipality)
			currentPharmacy.setAddress(currentPharmacy.getAddress() + " " + chars);
		else if (inLatitude)
			currentPharmacy.setLatitude(currentPharmacy.getLatitude() + chars);
		else if (inLongitude)
			currentPharmacy.setLongitude(currentPharmacy.getLongitude() + chars);
		else if (inPhone)
			currentPharmacy.setPhoneNumber(currentPharmacy.getPhoneNumber() + chars);
		else if (inDistance)
			currentPharmacy.setDistance(currentPharmacy.getDistance() + chars);
		else if (inIsAtService)
			currentPharmacy.setAtService(Boolean.parseBoolean(chars));
		else if (inParish)
			currentPharmacy.setParish(currentPharmacy.getParish() + chars);
		else if (inErrorMessage)
			errorMessage += chars;
	}
	
	public ArrayList<Pharmacy> getPharmacies() {
		if (error) return null;
		
		return result;
	}
	
	public String getErrorMessage() {
		return errorMessage;
	}
	
}