package org.gcube.portlets.user.geoportaldataentry.client.ui.card;

import java.util.ArrayList;
import java.util.List;

import org.gcube.portlets.widgets.mpformbuilder.client.form.generic.CreateMetadataForm;
import org.gcube.portlets.widgets.mpformbuilder.client.form.generic.GenericFormEvents.GenericFormEventsListener;
import org.gcube.portlets.widgets.mpformbuilder.shared.GenericDatasetBean;

import com.github.gwtbootstrap.client.ui.Button;
import com.github.gwtbootstrap.client.ui.Tab;
import com.github.gwtbootstrap.client.ui.constants.IconType;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;

public class MetadataFormCard {
	
	private String heading;
	private Tab tab;
	private boolean repeatible;
	private List<CreateMetadataForm> listForms = new ArrayList<CreateMetadataForm>();
	
	private MetadataFormCardEventHandler formCardEventHandler = new MetadataFormCardEventHandler();

	private class MetadataFormCardEventHandler implements GenericFormEventsListener{
		
		@Override
		public void onFormDataValid(GenericDatasetBean genericDatasetBean) {
			setTabStatus();
			
		}

		@Override
		public void onFormDataEdit() {
			resetTabStatus();
			
		}

		@Override
		public void onFormAborted() {
			// TODO Auto-generated method stub
			
		}

		@Override
		public void onValidationError(Throwable throwable, String errorMsg) {
			// TODO Auto-generated method stub
			
		}
		
	}
	
	public MetadataFormCard(Tab tab, CreateMetadataForm createMetadataForm, boolean repeatible) {
		this.tab = tab;
		this.repeatible = repeatible;
		this.buildCard(createMetadataForm);
		createMetadataForm.addListener(formCardEventHandler);
		
	}
	
	private void buildCard(final CreateMetadataForm createMetadataForm) {
		
		if(repeatible) {
			Button buttonAddNew = new Button("Add New...");
			tab.add(buttonAddNew);
			
			buttonAddNew.addClickHandler(new ClickHandler() {
				
				@Override
				public void onClick(ClickEvent event) {
					CreateMetadataForm newForm = new CreateMetadataForm(createMetadataForm.getMetadataProfiles());
					addNewForm(newForm);
				}
			});
		}
		
		addNewForm(createMetadataForm);
	}
	
	private void addNewForm(final CreateMetadataForm newForm) {
		tab.add(newForm);
		listForms.add(newForm);
		
		if(listForms.size()>1) {
			final Button buttonRemoveLatestForm = new Button("Remove");
			buttonRemoveLatestForm.setIcon(IconType.TRASH);
			tab.add(buttonRemoveLatestForm);
	
			buttonRemoveLatestForm.addClickHandler(new ClickHandler() {
				
				@Override
				public void onClick(ClickEvent event) {
					tab.remove(newForm);
					listForms.remove(newForm);
					tab.remove(buttonRemoveLatestForm);
					
				}
			});
		}
	}
	
	public List<CreateMetadataForm> getListForms() {
		return listForms;
	}
	
	public String getHeading() {
		return heading;
	}

	
	/**
	 * Validate form.
	 *
	 * @return true, if successful
	 */
	public boolean validateForm() {
		for (CreateMetadataForm createMetadataForm : listForms) {
			if(!createMetadataForm.isFormDataValid())
				return false;
		}
		return true;
	}

	public void setValidCard(boolean bool) {
		if(bool)
			tab.setIcon(IconType.OK_SIGN);
		else
			tab.setIcon(IconType.REMOVE_SIGN);
		
	}
	
	private void setTabStatus() {
		boolean isValid = validateForm();
		if(isValid)
			tab.setIcon(IconType.OK_SIGN);
		else
			tab.setIcon(IconType.REMOVE_SIGN);
	}
	
	private void resetTabStatus() {
		tab.setIcon(null);
	}
}