GenericInstitutionReportItemView.java

package kornell.gui.client.presentation.admin.institution.generic;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Date;
import java.util.List;

import com.github.gwtbootstrap.client.ui.ListBox;
import com.github.gwtbootstrap.client.ui.constants.AlertType;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.user.client.ui.Anchor;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.Widget;
import com.google.web.bindery.event.shared.EventBus;

import kornell.api.client.KornellSession;
import kornell.core.util.StringUtils;
import kornell.gui.client.util.ClientConstants;
import kornell.gui.client.util.forms.FormHelper;
import kornell.gui.client.util.view.KornellNotification;

public class GenericInstitutionReportItemView extends Composite {
	interface MyUiBinder extends UiBinder<Widget, GenericInstitutionReportItemView> {
	}

	private static MyUiBinder uiBinder = GWT.create(MyUiBinder.class);
	private FormHelper formHelper = GWT.create(FormHelper.class);
	private String ADMIN_IMAGES_PATH = StringUtils.mkurl(ClientConstants.IMAGES_PATH, "admin/");
	private KornellSession session;
	private String type;
	private String name;
	private String description;
	public static final String BILLING = "billing";
	
	@UiField
	Image certificationIcon;
	@UiField
	Label lblName;
	@UiField
	Label lblDescription;
	@UiField
	FlowPanel optionPanel;
	@UiField
	Anchor lblGenerate;
	@UiField
	Anchor lblDownload;
	private ListBox periodListBox;

	public GenericInstitutionReportItemView(EventBus eventBus, KornellSession session, String type) {
		this.session = session;
		this.type = type;
		periodListBox = new ListBox();
		initWidget(uiBinder.createAndBindUi(this));
		display();
	}

	private void display() {
		if(BILLING.equals(this.type)){
			this.name = "Relatório de utilização";
			this.description = "Escolha o período desejado na lista abaixo:";

			certificationIcon.setUrl(StringUtils.mkurl(ADMIN_IMAGES_PATH, type + ".png"));
			lblName.setText(name);
			lblDescription.setText(description);
			lblGenerate.setText("Gerar");
			lblGenerate.addStyleName("cursorPointer");
			
			addItemsToPeriodList();
			optionPanel.add(periodListBox);
		
			lblDownload.setText("-");
			lblDownload.removeStyleName("cursorPointer");
			lblDownload.addStyleName("anchorToLabel");
			lblDownload.setEnabled(false);
			
			lblGenerate.addClickHandler(new ClickHandler() {
				@Override
				public void onClick(ClickEvent event) {
					KornellNotification.show("Aguarde um instante...", AlertType.WARNING, 2000);
					session.report().locationAssign("/report/institutionBilling", 
							"?institutionUUID=" + session.getInstitution().getUUID() +
							"&periodStart=" + periodListBox.getValue() +
							"&periodEnd=" + getNextPeriod(periodListBox.getValue()));
				}
			});
		}
  }

	private String getNextPeriod(String start) {
    String year = start.split("-")[0];
    int nextMonth = Integer.parseInt(start.split("-")[1]) + 1;
    if(nextMonth > 12)
    	return (Integer.parseInt(year) + 1) + "-01";
    else
    	return year + "-" + (nextMonth < 10 ? "0"+nextMonth : nextMonth); 
  }

	private void addItemsToPeriodList() {
	  String now = formHelper.dateToString(new Date());
	  String next = getNextPeriod(now.split("-")[0] + "-" + now.split("-")[1]);
	  List<String> dates = new ArrayList<String>();
	  String date = formHelper.dateToString(session.getInstitution().getActivatedAt());
	  date = date.split("-")[0] + "-" + date.split("-")[1];
	  while(!date.equals(next)){
		  dates.add(date);
	  	date = getNextPeriod(date); 
	  }
	  Collections.reverse(dates);
	  for (String dateToAdd : dates) {
	  	periodListBox.addItem(dateToAdd, dateToAdd);
    }
  }

}