package schools;

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

import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.Executions;
import org.zkoss.zk.ui.SuspendNotAllowedException;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.EventListener;
import org.zkoss.zk.ui.util.GenericForwardComposer;
import org.zkoss.zkplus.databind.AnnotateDataBinder;
import org.zkoss.zul.Messagebox;
import org.zkoss.zul.api.Listbox;
import org.zkoss.zul.api.Window;

public class SchoolsListController extends GenericForwardComposer {

	private static final long serialVersionUID = 1L;
	
	private AnnotateDataBinder binder;
	
	private Window winSchools;

	private Listbox lbSchools;
	private List<School> schools;
	private School selectedSchool;
	
	@Override
	public void doAfterCompose(Component comp) throws Exception {
		
		try {
			super.doAfterCompose(comp);
		} 
		catch (Exception e) {
			e.printStackTrace();
		}

		/*
		 * create the data binder and bind this composer as the base model bean 
		 */
		binder = new AnnotateDataBinder(comp);
		binder.bindBean("controller", this);
		
		/*
		 * populate data models
		 */
		createModels();
		
	}
	
	public void onCreate(Event event) {
		
		/*
		 * populate ui with data 
		 */
		binder.loadAll();
	}
	
	/*
	 * Create some mock data models  
	 */
	private void createModels() {
		
		schools = new ArrayList<School>();
		
		schools.add(new School("1", "1st school", "address-1"));
		schools.add(new School("2", "2nd school", "address-2"));
		schools.add(new School("3", "3rd school", "address-3"));
		schools.add(new School("4", "4th school", "address-4"));
		schools.add(new School("5", "5th school", "address-5"));
		schools.add(new School("6", "6th school", "address-6"));
		schools.add(new School("7", "7th school", "address-7"));
		schools.add(new School("8", "8th school", "address-8"));
		schools.add(new School("9", "9th school", "address-9"));
		
		schools.add(new School("10", "1st school", "address-1"));
		schools.add(new School("12", "2nd school", "address-2"));
		schools.add(new School("13", "3rd school", "address-3"));
		schools.add(new School("14", "4th school", "address-4"));
		schools.add(new School("15", "5th school", "address-5"));
		schools.add(new School("16", "6th school", "address-6"));
		schools.add(new School("17", "7th school", "address-7"));
		schools.add(new School("18", "8th school", "address-8"));
		schools.add(new School("19", "9th school", "address-9"));
		schools.add(new School("21", "1st school", "address-1"));
		schools.add(new School("22", "2nd school", "address-2"));
		schools.add(new School("23", "3rd school", "address-3"));
		schools.add(new School("24", "4th school", "address-4"));
		schools.add(new School("25", "5th school", "address-5"));
		schools.add(new School("26", "6th school", "address-6"));
		schools.add(new School("27", "7th school", "address-7"));
		schools.add(new School("28", "8th school", "address-8"));
		schools.add(new School("29", "9th school", "address-9"));
		schools.add(new School("31", "1st school", "address-1"));
		schools.add(new School("32", "2nd school", "address-2"));
		schools.add(new School("33", "3rd school", "address-3"));
		schools.add(new School("34", "4th school", "address-4"));
		schools.add(new School("35", "5th school", "address-5"));
		schools.add(new School("36", "6th school", "address-6"));
		schools.add(new School("37", "7th school", "address-7"));
		schools.add(new School("38", "8th school", "address-8"));
		schools.add(new School("39", "9th school", "address-9"));
		schools.add(new School("41", "1st school", "address-1"));
		schools.add(new School("42", "2nd school", "address-2"));
		schools.add(new School("43", "3rd school", "address-3"));
		schools.add(new School("44", "4th school", "address-4"));
		schools.add(new School("45", "5th school", "address-5"));
		schools.add(new School("46", "6th school", "address-6"));
		schools.add(new School("47", "7th school", "address-7"));
		schools.add(new School("48", "8th school", "address-8"));
		schools.add(new School("49", "9th school", "address-9"));
	}
	
	/**
	 * Event handler method triggered when the "edit" toolbar button is pressed 
	 */
	public void onClick$tbtnEdit() {
		
		editSchool();
	}
	
	/**
	 * Event handler method triggered wheneber the user selects a listitem using CR or Double Click
	 */
	public void onOK$lbSchools() {
		
		editSchool();
	}
	
	private void editSchool() {
		
		if (selectedSchool == null) {
			try {
				Messagebox.show("You have to select a school from the list first.", "Error", Messagebox.OK, Messagebox.ERROR);
			} 
			catch (InterruptedException e) {
				e.printStackTrace();
			}
			return;
		}

		Map<String, Object> parameters = new HashMap<String, Object>();
		parameters.put("SELECTED_SCHOOL", selectedSchool);
		parameters.put("PARENT_WINDOW", winSchools);
		Window editDialog = (Window) Executions.createComponents("/schools/SchoolEditor.zul", winSchools, parameters);
		
		try {
			editDialog.doOverlapped();
			editDialog.setPosition("center");
		} 
		catch (SuspendNotAllowedException e) {
			e.printStackTrace();
		} 
	}
	
	/**
	 * This method is actualy an event handler triggered only from the edit dialog
	 * and it is responsible to reflect the data changes made to the list.
	 */
	public void onSchoolSaved() {

		int index = lbSchools.getSelectedIndex();
		
		if (index == -1)
			return;
		
		binder.loadComponent( lbSchools.getItemAtIndexApi(index) );
	}
	
	/**
	 * Event handler method triggered when the "remove" toolbar button is pressed 
	 */
	public void onClick$tbtnRemove() {
		
		if (selectedSchool == null) {
			try {
				Messagebox.show("You have to select a school from the list first.", "Error", Messagebox.OK, Messagebox.ERROR);
			} 
			catch (InterruptedException e) {
				e.printStackTrace();
			}
			return;
		}
			
		try {
			
			/*
			 * This event listener is needed to catch the response given by the user in the confirmation dialog  
			 */
			EventListener eventListener = new EventListener() {
				
				@Override
				public void onEvent(Event event) throws Exception {
					 switch (((Integer) event.getData()).intValue()) {
	                    case Messagebox.OK:
	                        deleteSchool();
	                        break;
					 }
				}
			};
			
			Messagebox.show("Are you sure you want to delete " + selectedSchool.getName() +  "?", 
							"Warning", 
							Messagebox.OK | Messagebox.CANCEL, 
							Messagebox.QUESTION,
							eventListener);
		} 
		catch (InterruptedException e) {
			e.printStackTrace();
		}
	}
	
	/**
	 * Delete the selected school 
	 */
	private void deleteSchool() {
		schools.remove(selectedSchool);
		selectedSchool = null;
		binder.loadComponent(lbSchools);
	}
	

	public AnnotateDataBinder getBinder() {
		return binder;
	}

	public void setBinder(AnnotateDataBinder binder) {
		this.binder = binder;
	}

	public List<School> getSchools() {
		return schools;
	}

	public void setSchools(List<School> schools) {
		this.schools = schools;
	}

	public School getSelectedSchool() {
		return selectedSchool;
	}

	public void setSelectedSchool(School selectedSchool) {
		this.selectedSchool = selectedSchool;
	}
	
}