/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  
  package org.apache.myfaces.tobago.renderkit.html.util;
  
  import org.apache.commons.lang.StringUtils;
  import org.apache.myfaces.tobago.component.Attributes;
  import org.apache.myfaces.tobago.component.Facets;
  import org.apache.myfaces.tobago.component.UIPopup;
  import org.apache.myfaces.tobago.event.PopupFacetActionListener;
  import org.apache.myfaces.tobago.internal.component.AbstractUICommandBase;
  import org.apache.myfaces.tobago.renderkit.util.RenderUtils;
  import org.apache.myfaces.tobago.util.ComponentUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import javax.faces.component.UIComponent;
  import javax.faces.component.ValueHolder;
  import javax.faces.context.FacesContext;
  import java.util.Arrays;
  
  public class CommandRendererHelper {
  
    private static final Logger LOG = LoggerFactory.getLogger(CommandRendererHelper.class);
  
    private String onclick;
    private boolean disabled;
    private String href;
    private String target;
  
    public CommandRendererHelper(FacesContext facesContext, AbstractUICommandBase command) {
      this(facesContext, command, null);
    }
  
    public CommandRendererHelper(FacesContext facesContext, AbstractUICommandBase command, Tag tag) {
  
      disabled = ComponentUtils.getBooleanAttribute(command, Attributes.DISABLED);
  
      if (disabled) {
        onclick = "";
        href = "";
      } else {
        href = "#"; // this is to make the link "active", needed for focus, cursor, etc.
        UIPopup popup = (UIPopup) command.getFacet(Facets.POPUP);
        if (popup != null) {
          if (!ComponentUtils.containsPopupActionListener(command)) {
            command.addActionListener(new PopupFacetActionListener());
          }
        }
  
        boolean transition = ComponentUtils.getBooleanAttribute(command, Attributes.TRANSITION);
  
        if (StringUtils.isNotEmpty(command.getLink()) || StringUtils.isNotEmpty(command.getResource())) {
          String url = RenderUtils.generateUrl(facesContext, command);
          if (tag == Tag.ANCHOR) {
            onclick = null;
            href = url;
            target = command.getTarget();
          } else {
            // TODO target
            onclick = "Tobago.navigateToUrl('" + url + "');";
          }
        } else if (StringUtils.isNotEmpty(command.getOnclick())) {
          onclick = prepareOnClick(facesContext, command);
        } else if (command.getRenderedPartially().length > 0) {
          String clientId = command.getClientId(facesContext);
          String[] componentIds = command.getRenderedPartially();
  
          // TODO find a better way
          boolean popupAction = ComponentUtils.containsPopupActionListener(command);
          if (popupAction) {
            if (componentIds.length != 1) {
              LOG.warn("more than one partially rendered component is not supported for popup! using first one: "
                  + Arrays.toString(componentIds));
            }
            onclick = "Tobago.Popup.openWithAction(this, '"
                + HtmlRendererUtils.getComponentId(facesContext, command, componentIds[0]) + "', '" + clientId + "');";
          } else {
            onclick = "Tobago.reloadComponent(this, '"
                + HtmlRendererUtils.getComponentIds(facesContext, command, componentIds) + "','" + clientId + "', {});";
          }
  
        } else {
         String clientId = command.getClientId(facesContext);
         String target = ComponentUtils.getStringAttribute(command, Attributes.TARGET);
         onclick = HtmlRendererUtils.createSubmitAction(clientId, transition, target, null);
       }
 
       if (command.getAttributes().get(Attributes.POPUP_CLOSE) != null
           && ComponentUtils.isInPopup(command)) {
         String value = (String) command.getAttributes().get(Attributes.POPUP_CLOSE);
         if (value.equals("immediate")) {
           onclick = "Tobago.Popup.close(this);";
         } else if (value.equals("afterSubmit")
             && command instanceof org.apache.myfaces.tobago.component.UICommand
             && ((org.apache.myfaces.tobago.component.UICommand) command).getRenderedPartially().length > 0) {
           onclick = "Tobago.Popup.unlockBehind();" + onclick + "Tobago.Popup.close(this);";
         }
 
       }
       onclick = appendConfirmationScript(onclick, command);
     }
   }
 
   private String prepareOnClick(FacesContext facesContext, AbstractUICommandBase component) {
     String onclick = component.getOnclick();
     if (onclick.contains("@autoId")) {
       onclick = StringUtils.replace(onclick, "@autoId", component.getClientId(facesContext));
     }
     return onclick;
   }
 
   private String appendConfirmationScript(String onclick, UIComponent component) {
     ValueHolder confirmation = (ValueHolder) component.getFacet(Facets.CONFIRMATION);
     if (confirmation != null) {
       StringBuilder script = new StringBuilder("return confirm('");
       script.append(confirmation.getValue());
       script.append("')");
       if (onclick != null) {
         script.append(" && ");
         script.append(onclick);
       }
       onclick = script.toString();
     }
     return onclick;
   }
 
   public String getOnclick() {
     return onclick;
   }
 
   public boolean isDisabled() {
     return disabled;
   }
 
   public String getHref() {
     return href;
   }
 
   public String getTarget() {
     return target;
   }
 
   public static enum Tag {
     ANCHOR, BUTTON
   }
 }