/*
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 * Copyright (c) 2013, MPL CodeInside http://codeinside.ru
 */

package ru.codeinside.gses.webui.manager;

import com.vaadin.ui.Button;
import com.vaadin.ui.FormLayout;
import com.vaadin.ui.Panel;
import com.vaadin.ui.Upload;
import com.vaadin.ui.Window;
import ru.codeinside.gses.apservice.ApServiceTable;
import ru.codeinside.gses.manager.ManagerService;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.MalformedURLException;
import java.net.URL;


public class ServiceWidget extends FormLayout implements Upload.Receiver, Upload.SucceededListener {
  private ByteArrayOutputStream outputStream;

  ApServiceTable c;

  public ServiceWidget(ApServiceTable c) {
    this.c = c;
    Panel panel = new Panel();
    Upload upload = new Upload();
    upload.setImmediate(false);
    upload.setButtonCaption("Импортировать");
    upload.setReceiver(this);
    upload.addListener(this);
    panel.addComponent(upload);
    Panel panel1 = new Panel();
    Button button = new Button("Автоматическая загрузка", new Button.ClickListener() {
      @Override
      public void buttonClick(Button.ClickEvent event) {
        URL url;
        try {
          url = new URL("http://" + getApplication().getURL().getHost() + "/registry-1.0-SNAPSHOT/services");
          loadServiceData(url.openStream());
        } catch (MalformedURLException e) {
          System.out.println(e);
        } catch (IOException e) {
          System.out.println(e);
        }
      }
    });
    panel1.addComponent(button);
    this.setSpacing(true);
    this.addComponent(panel);
  }


  @Override
  public OutputStream receiveUpload(String filename, String mimeType) {
    this.outputStream = new ByteArrayOutputStream();
    return outputStream;
  }

  @Override
  public void uploadSucceeded(Upload.SucceededEvent event) {
    byte[] buffer = outputStream.toByteArray();
    final ByteArrayInputStream data = new ByteArrayInputStream(buffer);
    loadServiceData(data);
  }

  private void loadServiceData(InputStream data) {
    String currentUserName = getApplication().getUser().toString();
    try {
      ManagerService.get().loadServiceData(data, currentUserName);
      getWindow().showNotification("Услуги загружены");
      c.refreshTable();
    } catch (Exception e) {
      getWindow().showNotification("Ошибка загрузки", e.getCause().getMessage(),
        Window.Notification.TYPE_ERROR_MESSAGE);
    }
  }


}