/***************************************************************************
 * Copyright (C) 2003-2009 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.forum.webui.popup;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import org.exoplatform.forum.ForumSessionUtils;
import org.exoplatform.forum.ForumUtils;
import org.exoplatform.forum.SettingPortletPreference;
import org.exoplatform.forum.service.Category;
import org.exoplatform.forum.service.Forum;
import org.exoplatform.forum.service.ForumServiceUtils;
import org.exoplatform.forum.service.Utils;
import org.exoplatform.forum.webui.BaseForumForm;
import org.exoplatform.forum.webui.UIForumPortlet;
import org.exoplatform.web.application.ApplicationMessage;
import org.exoplatform.webui.config.annotation.ComponentConfig;
import org.exoplatform.webui.config.annotation.EventConfig;
import org.exoplatform.webui.core.UIComponent;
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.input.UICheckBoxInput;

@ComponentConfig(
    lifecycle = UIFormLifecycle.class, 
    template = "app:/templates/forum/webui/popup/UISettingEditModeForm.gtmpl", 
    events = { 
      @EventConfig(listeners = UISettingEditModeForm.SaveActionListener.class),
      @EventConfig(listeners = UISettingEditModeForm.SelectTabActionListener.class) 
    }
)
public class UISettingEditModeForm extends BaseForumForm implements UIPopupComponent {

  public static final String       FIELD_SCOPED_TAB             = "Scoped";

  public static final String       FIELD_SHOW_HIDDEN_TAB        = "EnabledPanel";

  public static final String       FIELD_FORUM_PREFERENCE_TAB   = "ForumPreference";

  public static final String       FIELD_ISPOLL_CHECKBOX        = "IsShowPoll";

  public static final String       FIELD_ISMODERATOR_CHECKBOX   = "isShowModerator";

  public static final String       FIELD_ISQUICKREPLY_CHECKBOX  = "isShowQuickReply";

  public static final String       FIELD_ISICONSLEGEND_CHECKBOX = "isShowIconsLegend";

  public static final String       FIELD_ISRULES_CHECKBOX       = "isShowRules";

  public static final String       FIELD_ISSTATISTIC_CHECKBOX   = "isShowStatistic";

  public static final String       FIELD_ISUSEAJAX_CHECKBOX     = "isUseAjax";

  private int                      tabId                        = 0;

  private static List<String>      listCategoryinv              = new ArrayList<String>();

  private static List<String>      listforuminv                 = new ArrayList<String>();

  private int                      allForumSize                 = 0;

  private int                      allCategorySize              = 0;
  
  private SettingPortletPreference portletPreference;

  public UISettingEditModeForm() {
    UIForumInputWithActions Scoped = new UIForumInputWithActions(FIELD_SCOPED_TAB);
    UIForumInputWithActions EnabledPanel = new UIForumInputWithActions(FIELD_SHOW_HIDDEN_TAB);
    UIForumInputWithActions ForumPreference = new UIForumInputWithActions(FIELD_FORUM_PREFERENCE_TAB);

    UICheckBoxInput IsShowPoll = new UICheckBoxInput(FIELD_ISPOLL_CHECKBOX, FIELD_ISPOLL_CHECKBOX, true);
    UICheckBoxInput isShowModerator = new UICheckBoxInput(FIELD_ISMODERATOR_CHECKBOX, FIELD_ISMODERATOR_CHECKBOX, true);
    UICheckBoxInput isShowQuickReply = new UICheckBoxInput(FIELD_ISQUICKREPLY_CHECKBOX, FIELD_ISQUICKREPLY_CHECKBOX, true);
    UICheckBoxInput isShowIconsLegend = new UICheckBoxInput(FIELD_ISICONSLEGEND_CHECKBOX, FIELD_ISICONSLEGEND_CHECKBOX, true);
    UICheckBoxInput isShowRules = new UICheckBoxInput(FIELD_ISRULES_CHECKBOX, FIELD_ISRULES_CHECKBOX, true);
    UICheckBoxInput isShowStatistic = new UICheckBoxInput(FIELD_ISSTATISTIC_CHECKBOX, FIELD_ISSTATISTIC_CHECKBOX, true);
    UICheckBoxInput isUseAjax = new UICheckBoxInput(FIELD_ISUSEAJAX_CHECKBOX, FIELD_ISUSEAJAX_CHECKBOX, true);

    EnabledPanel.addUIFormInput(IsShowPoll);
    EnabledPanel.addUIFormInput(isShowModerator);
    EnabledPanel.addUIFormInput(isShowQuickReply);
    EnabledPanel.addUIFormInput(isShowIconsLegend);
    EnabledPanel.addUIFormInput(isShowRules);
    EnabledPanel.addUIFormInput(isShowStatistic);

    ForumPreference.addUIFormInput(isUseAjax);

    addUIFormInput(Scoped);
    addUIFormInput(EnabledPanel);
    addUIFormInput(ForumPreference);
  }

  public void setInitComponent() throws Exception {
    UIForumInputWithActions EnabledPanel = getChildById(FIELD_SHOW_HIDDEN_TAB);
    UIForumInputWithActions ForumPreference = getChildById(FIELD_FORUM_PREFERENCE_TAB);
    portletPreference = ForumUtils.getPorletPreference();
    EnabledPanel.getUICheckBoxInput(FIELD_ISPOLL_CHECKBOX).setChecked(portletPreference.isShowPoll());
    EnabledPanel.getUICheckBoxInput(FIELD_ISQUICKREPLY_CHECKBOX).setChecked(portletPreference.isShowQuickReply());
    EnabledPanel.getUICheckBoxInput(FIELD_ISICONSLEGEND_CHECKBOX).setChecked(portletPreference.isShowIconsLegend());
    EnabledPanel.getUICheckBoxInput(FIELD_ISRULES_CHECKBOX).setChecked(portletPreference.isShowRules());
    EnabledPanel.getUICheckBoxInput(FIELD_ISSTATISTIC_CHECKBOX).setChecked(portletPreference.isShowStatistics());
    EnabledPanel.getUICheckBoxInput(FIELD_ISMODERATOR_CHECKBOX).setChecked(portletPreference.isShowModerators());

    ForumPreference.getUICheckBoxInput(FIELD_ISUSEAJAX_CHECKBOX).setChecked(portletPreference.isUseAjax());
    UIForumPortlet  forumPortlet = getParent();
    listCategoryinv.addAll(forumPortlet.getInvisibleCategories());
    listforuminv.addAll(forumPortlet.getInvisibleForums());
  }

  protected boolean tabIsSelected(int tabId) {
    if (this.tabId == tabId)
      return true;
    else
      return false;
  }

  public void activate() {
  }

  public void deActivate() {
  }

  protected List<Category> getCategoryList() throws Exception {
    List<Category> categoryList = new ArrayList<Category>();
    String userId = getUserProfile().getUserId();
    try {      
      if (userProfile.getUserRole() > 0) {
        for (Category category : getForumService().getCategories()) {
          if (ForumServiceUtils.hasPermission(category.getUserPrivate(), userId)) {
            categoryList.add(category);
          }
        }
      } else {
        categoryList.addAll(getForumService().getCategories());
      }
    } catch (Exception e) {
      if (log.isDebugEnabled()) {
        log.debug(String.format("Failed to check permission for user %s", userId), e);
      }
    }
    for (Category category : categoryList) {
      String categoryId = category.getId();
      boolean isCheck = isCategoryChecked(categoryId);
      if (getUICheckBoxInput(categoryId) != null) {
        getUICheckBoxInput(categoryId).setChecked(isCheck);
      } else {
        UICheckBoxInput boxInput = new UICheckBoxInput(categoryId, categoryId, isCheck);
        boxInput.setChecked(isCheck);
        addUIFormInput(boxInput);
        ++allCategorySize;
      }
    }
    return categoryList;
  }
  
  private boolean isCategoryChecked(String categoryId) {
    return (listCategoryinv.contains(categoryId) == true || listCategoryinv.isEmpty());
  }

  private boolean isForumChecked(String forumId) {
    return (listforuminv.contains(forumId) == true || listforuminv.isEmpty());
  }

  protected List<Forum> getForumList(String categoryId) throws Exception {
    List<Forum> forumList = ForumSessionUtils.getForumsOfCategory(categoryId, getUserProfile());
    for (Forum forum : forumList) {
      String forumId = forum.getId();
      boolean isCheck = isForumChecked(forumId);
      if (getUICheckBoxInput(forumId) != null) {
        getUICheckBoxInput(forumId).setChecked(isCheck);
      } else {
        UICheckBoxInput boxInput = new UICheckBoxInput(forumId, forumId, isCheck);
        boxInput.setChecked(isCheck);
        addUIFormInput(boxInput);
        ++allForumSize;
      }
    }
    return forumList;
  }

  private void setNewListActive() throws Exception {
    Set<String> categoryIds = new HashSet<String>();
    Set<String> forumIds = new HashSet<String>();
    List<UIComponent> children = getChildren();
    for (UIComponent child : children) {
      if (child instanceof UICheckBoxInput) {
        if (((UICheckBoxInput) child).isChecked()) {
          if (child.getId().indexOf(Utils.CATEGORY) >= 0) {
            categoryIds.add(child.getId());
          } else {
            forumIds.add(child.getId());
          }
        }
      }
    }
    listCategoryinv.clear();
    listforuminv.clear();
    
    processValue(categoryIds, listCategoryinv, allCategorySize);
    if(listCategoryinv.contains("_")) {
      listforuminv.add("_");
    } else {
      processValue(forumIds, listforuminv, allForumSize);
    }
  }

  private void processValue(Set<String> inputs, List<String> values, int size) {
    //
    if (inputs.size() != size) {
      if (inputs.size() == 0) {
        values.add("_");
      }
      values.addAll(inputs);
    }
  }
  static public class SaveActionListener extends EventListener<UISettingEditModeForm> {
    public void execute(Event<UISettingEditModeForm> event) throws Exception {
      UISettingEditModeForm editModeForm = event.getSource();
      UIForumInputWithActions EnabledPanel = editModeForm.getChildById(FIELD_SHOW_HIDDEN_TAB);

      editModeForm.portletPreference.setShowPoll((Boolean) EnabledPanel.getUICheckBoxInput(FIELD_ISPOLL_CHECKBOX).getValue());
      editModeForm.portletPreference.setShowQuickReply((Boolean) EnabledPanel.getUICheckBoxInput(FIELD_ISQUICKREPLY_CHECKBOX).getValue());
      editModeForm.portletPreference.setShowIconsLegend((Boolean) EnabledPanel.getUICheckBoxInput(FIELD_ISICONSLEGEND_CHECKBOX).getValue());
      editModeForm.portletPreference.setShowRules((Boolean) EnabledPanel.getUICheckBoxInput(FIELD_ISRULES_CHECKBOX).getValue());
      editModeForm.portletPreference.setShowStatistics((Boolean) EnabledPanel.getUICheckBoxInput(FIELD_ISSTATISTIC_CHECKBOX).getValue());
      editModeForm.portletPreference.setShowModerators((Boolean) EnabledPanel.getUICheckBoxInput(FIELD_ISMODERATOR_CHECKBOX).getValue());
      UIForumPortlet forumPortlet = editModeForm.getAncestorOfType(UIForumPortlet.class);

      UIForumInputWithActions ForumPreference = editModeForm.getChildById(FIELD_FORUM_PREFERENCE_TAB);
      editModeForm.portletPreference.setUseAjax((Boolean) ForumPreference.getUICheckBoxInput(FIELD_ISUSEAJAX_CHECKBOX).getValue());

      try {
        editModeForm.setNewListActive();
        editModeForm.portletPreference.setInvisibleCategories(listCategoryinv);
        editModeForm.portletPreference.setInvisibleForums(listforuminv);
        ForumUtils.savePortletPreference(editModeForm.portletPreference);
        forumPortlet.loadPreferences();
        event.getRequestContext().getUIApplication().addMessage(new ApplicationMessage("UIForumPortlet.msg.save-successfully", null, ApplicationMessage.INFO));
        event.getRequestContext().addUIComponentToUpdateByAjax(forumPortlet);
      } catch (Exception e) {
        event.getRequestContext().getUIApplication().addMessage(new ApplicationMessage("UIForumPortlet.msg.save-fail", null, ApplicationMessage.WARNING));
        event.getRequestContext().addUIComponentToUpdateByAjax(forumPortlet);
      }
    }
  }

  static public class SelectTabActionListener extends EventListener<UISettingEditModeForm> {
    public void execute(Event<UISettingEditModeForm> event) throws Exception {
      String id = event.getRequestContext().getRequestParameter(OBJECTID);
      UISettingEditModeForm editModeForm = event.getSource();
      if (editModeForm.tabId == 0) {
        editModeForm.setNewListActive();
      }
      editModeForm.tabId = Integer.parseInt(id);
      event.getRequestContext().addUIComponentToUpdateByAjax(editModeForm.getParent());
    }
  }

}
