/***************************************************************************
 * Copyright (C) 2003-2007 eXo Platform SAS.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see<http://www.gnu.org/licenses/>.
 ***************************************************************************/
package org.exoplatform.answer.webui.popup;

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

import org.exoplatform.answer.webui.FAQUtils;
import org.exoplatform.answer.webui.UIAnswersPortlet;
import org.exoplatform.faq.service.Watch;
import org.exoplatform.forum.common.webui.BaseUIForm;
import org.exoplatform.forum.common.webui.UIFormMultiValueInputSet;
import org.exoplatform.webui.config.annotation.ComponentConfig;
import org.exoplatform.webui.config.annotation.EventConfig;
import org.exoplatform.webui.core.UIPopupComponent;
import org.exoplatform.webui.core.lifecycle.UIFormLifecycle;
import org.exoplatform.webui.event.Event;
import org.exoplatform.webui.event.EventListener;
import org.exoplatform.webui.form.UIFormStringInput;

@ComponentConfig(
    lifecycle = UIFormLifecycle.class, 
    template = "app:/templates/answer/webui/popup/UIWatchForm.gtmpl", 
    events = {
        @EventConfig(listeners = UIWatchForm.SaveActionListener.class), 
        @EventConfig(listeners = UIWatchForm.CancelActionListener.class) 
    }
)
public class UIWatchForm extends BaseUIForm implements UIPopupComponent {
  public static final String       USER_NAME     = "userName";

  public static final String       EMAIL_ADDRESS = "emailAddress";

  private String                   categoryId_   = "";

  private UIFormMultiValueInputSet emailAddress;

  private UIFormStringInput        userName;

  public UIWatchForm() throws Exception {
    userName = new UIFormStringInput(USER_NAME, USER_NAME, null);
    emailAddress = createUIComponent(UIFormMultiValueInputSet.class, null, null);
    emailAddress.setId(EMAIL_ADDRESS);
    emailAddress.setName(EMAIL_ADDRESS);
    emailAddress.setType(UIFormStringInput.class);
    addUIFormInput(userName);
    addUIFormInput(emailAddress);
  }

  public String[] getActions() {
    return new String[] { "Save", "Cancel" };
  }

  public void activate() {
  }

  public void deActivate() {
  }

  public String getCategoryID() {
    return categoryId_;
  }

  public void setCategoryID(String s) {
    categoryId_ = s;
  }

  protected void setWatch(Watch watch) throws Exception {
    String[] values = FAQUtils.splitForFAQ(watch.getEmails());
    emailAddress.setValue(new ArrayList<String>(Arrays.asList(values)));
    UIFormStringInput user = getChildById(USER_NAME);
    user.setValue(watch.getUser());
    user.setReadOnly(true);
  }

  static public class SaveActionListener extends EventListener<UIWatchForm> {
    @SuppressWarnings("unchecked")
    public void execute(Event<UIWatchForm> event) throws Exception {
      UIWatchForm uiWatchForm = event.getSource();
      String name = uiWatchForm.getUIStringInput(USER_NAME).getValue();
      if (FAQUtils.isFieldEmpty(name)) {
        uiWatchForm.warning("UIWatchForm.msg.name-field-empty");
        return;
      }
      List<String> values = (List<String>) uiWatchForm.emailAddress.getValue();
      String listEmail = values.toString().replace("[", "").replace("]", "").replaceAll(", ", ",").replaceAll(" ,", ",");
      if (FAQUtils.isFieldEmpty(listEmail)) {
        uiWatchForm.warning("UIWatchForm.msg.to-field-empty");
        return;
      } else if (!FAQUtils.isValidEmailAddresses(listEmail)) {
        uiWatchForm.warning("UIWatchForm.msg.invalid-to-field");
        return;
      }
      String categoryId = uiWatchForm.getCategoryID();

      Watch watch = new Watch();
      watch.setUser(name);
      watch.setEmails(listEmail);
      FAQUtils.getFAQService().addWatchCategory(categoryId, watch);
      UIAnswersPortlet watchContainer = uiWatchForm.getAncestorOfType(UIAnswersPortlet.class);
      UIWatchManager watchManager = watchContainer.findFirstComponentOfType(UIWatchManager.class);
      watchManager.setCategoryID(categoryId);
      event.getRequestContext().addUIComponentToUpdateByAjax(watchManager);
      uiWatchForm.cancelChildPopupAction();
    }
  }

  static public class CancelActionListener extends EventListener<UIWatchForm> {
    public void execute(Event<UIWatchForm> event) throws Exception {
      event.getSource().cancelChildPopupAction();
    }
  }
}
