package org.gcube.portlets.widgets.wstaskexecutor.client.view.binder;

import java.util.List;

import org.gcube.common.workspacetaskexecutor.shared.TaskParameterType;
import org.gcube.portlets.widgets.wstaskexecutor.client.WsTaskExecutorWidget;
import org.gcube.portlets.widgets.wstaskexecutor.client.event.DeleteCustomFieldEvent;

import com.github.gwtbootstrap.client.ui.Button;
import com.github.gwtbootstrap.client.ui.InputAddOn;
import com.github.gwtbootstrap.client.ui.ListBox;
import com.github.gwtbootstrap.client.ui.TextBox;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.shared.HandlerManager;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.uibinder.client.UiHandler;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.Widget;


/**
 * The Class CustomFieldEntry.
 *
 * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
 * May 8, 2018
 */
public class CustomFieldEntry extends Composite {

	private static CustomFieldEntryUiBinder uiBinder = GWT
			.create(CustomFieldEntryUiBinder.class);

	/**
	 * The Interface CustomFieldEntryUiBinder.
	 *
	 * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
	 * May 8, 2018
	 */
	interface CustomFieldEntryUiBinder extends
	UiBinder<Widget, CustomFieldEntry> {
	}

	@UiField InputAddOn keyFieldPrepend;
	@UiField InputAddOn valueFieldPrepend;
	@UiField Button removeCustomField;
	@UiField ListBox field_select_parameter;

	private List<TaskParameterType> parameterTypes;

	//inserted values
	private String value;
	private String key;
	//private boolean isCustomCreatedByUser;

	// event bus
	private HandlerManager eventBus;
	private String parameterType;

	/**
	 * Instantiates a new custom field entry.
	 *
	 * @param eventBus the event bus
	 * @param key the key
	 * @param value the value
	 * @param isCustomCreatedByUser the is custom created by user
	 */
	public CustomFieldEntry(HandlerManager eventBus, String key, String value, final String parameterType) {
		initWidget(uiBinder.createAndBindUi(this));

		keyFieldPrepend.setTitle("This is the key of the parameter");
		valueFieldPrepend.setTitle("This is the value of the parameter");

		// save information
		this.eventBus = eventBus;
		this.key = key;
		this.value = value;
		this.parameterType = parameterType;


		if(key!=null && !key.isEmpty()){
			((TextBox)this.keyFieldPrepend.getWidget(1)).setText(key);
		}

		if(value!=null && !value.isEmpty()){
			((TextBox)this.valueFieldPrepend.getWidget(1)).setText(value);
		}

		//this.isCustomCreatedByUser = isCustomCreatedByUser;

		// remove the first appendbox
//		if(!isCustomCreatedByUser){
//			this.valueFieldPrepend.removeFromParent();
//			this.keyFieldPrepend.setPrependText(key + ":");
//			((TextBox)this.keyFieldPrepend.getWidget(1)).setText(value);
//		}

		WsTaskExecutorWidget.wsTaskService.getAvailableParameterTypes(new AsyncCallback<List<TaskParameterType>>() {


			@Override
			public void onFailure(Throwable caught) {
				Window.alert(caught.getMessage());
				field_select_parameter.setEnabled(false);

			}

			@Override
			public void onSuccess(List<TaskParameterType> result) {

				parameterTypes = result;

				for (TaskParameterType taskParameterType : result) {
					field_select_parameter.addItem(taskParameterType.getType(), taskParameterType.getType());
				}

				field_select_parameter.setEnabled(true);

				if(parameterType!=null && !parameterType.isEmpty()){
					field_select_parameter.setSelectedValue(parameterType);
					field_select_parameter.setEnabled(false);
				}

			}
		});

		field_select_parameter.setEnabled(false);

	}

	/**
	 * Retrieve the key value.
	 *
	 * @return the key
	 */
	public String getKey(){

		return ((TextBox)this.keyFieldPrepend.getWidget(1)).getText();
	}

	/**
	 * Retrieve the value.
	 *
	 * @return the value
	 */
	public String getValue(){

		return ((TextBox)this.valueFieldPrepend.getWidget(1)).getText();

	}

	/**
	 * On remove custom field.
	 *
	 * @param e the e
	 */
	@UiHandler("removeCustomField")
	void onRemoveCustomField(ClickEvent e){

		// fire event
		eventBus.fireEvent(new DeleteCustomFieldEvent(this));

	}

	/**
	 * Remove delete button.
	 */
	public void freeze() {

		removeCustomField.setEnabled(false);

	}

	/**
	 * Gets the type.
	 *
	 * @return the type
	 */
	public String getType(){
		return field_select_parameter.getSelectedValue();
	}

}