/*
    * 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.internal.renderkit.renderer;
  
  import org.apache.myfaces.tobago.component.ClientBehaviors;
  import org.apache.myfaces.tobago.context.Markup;
  import org.apache.myfaces.tobago.internal.component.AbstractUIData;
  import org.apache.myfaces.tobago.internal.component.AbstractUITree;
  import org.apache.myfaces.tobago.internal.component.AbstractUITreeListbox;
  import org.apache.myfaces.tobago.internal.component.AbstractUITreeNodeBase;
  import org.apache.myfaces.tobago.internal.component.AbstractUITreeSelect;
  import org.apache.myfaces.tobago.internal.renderkit.Command;
  import org.apache.myfaces.tobago.internal.renderkit.CommandMap;
  import org.apache.myfaces.tobago.internal.util.HtmlRendererUtils;
  import org.apache.myfaces.tobago.internal.util.StringUtils;
  import org.apache.myfaces.tobago.model.Selectable;
  import org.apache.myfaces.tobago.renderkit.RendererBase;
  import org.apache.myfaces.tobago.renderkit.css.BootstrapClass;
  import org.apache.myfaces.tobago.renderkit.css.TobagoClass;
  import org.apache.myfaces.tobago.renderkit.html.HtmlAttributes;
  import org.apache.myfaces.tobago.renderkit.html.HtmlElements;
  import org.apache.myfaces.tobago.renderkit.html.HtmlInputTypes;
  import org.apache.myfaces.tobago.util.ComponentUtils;
  import org.apache.myfaces.tobago.webapp.TobagoResponseWriter;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import javax.faces.component.UINamingContainer;
  import javax.faces.context.FacesContext;
  import java.io.IOException;
  import java.lang.invoke.MethodHandles;
  import java.util.Map;
  
  public class TreeSelectRenderer<T extends AbstractUITreeSelect> extends RendererBase<T> {
  
    private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  
    @Override
    public void decodeInternal(final FacesContext facesContext, final T component) {
  
      if (component.isDisabled()) {
        return;
      }
  
      final AbstractUITreeNodeBase node = ComponentUtils.findAncestor(component, AbstractUITreeNodeBase.class);
      final AbstractUIData data = ComponentUtils.findAncestor(node, AbstractUIData.class);
      final String clientId = component.getClientId(facesContext);
      final String name;
  
      if (data.getSelectable().isSingle()) {
        name = getClientIdWithoutRowIndex(data, clientId);
      } else {
        name = clientId;
      }
  
      final String parameter = facesContext.getExternalContext().getRequestParameterMap().get(name);
  
      if (LOG.isDebugEnabled()) {
        LOG.debug("parameter = '" + parameter + "'");
      }
  
      final boolean selected = clientId.equals(parameter);
      if (!component.isValueStoredInState()) {
        component.setSubmittedValue(selected ? "true" : "false");
      }
    }
  
    @Override
    public void encodeBeginInternal(final FacesContext facesContext, final T component) throws IOException {
  
      final AbstractUITree tree = ComponentUtils.findAncestor(component, AbstractUITree.class);
      final AbstractUITreeNodeBase node = ComponentUtils.findAncestor(component, AbstractUITreeNodeBase.class);
      final AbstractUIData data = ComponentUtils.findAncestor(node, AbstractUIData.class);
  
      final TobagoResponseWriter writer = getResponseWriter(facesContext);
  
      if (data instanceof AbstractUITreeListbox) {
        writer.write(StringUtils.defaultString(component.getLabel()));
        return;
      }
  
      final String id = component.getClientId(facesContext);
     final String currentValue = getCurrentValue(facesContext, component);
     final boolean checked;
     if (component.isValueStoredInState()) {
       checked = data.getSelectedState().isSelected(node.getPath());
     } else {
       checked = "true".equals(currentValue);
     }
 
     final boolean folder = data.isFolder();
     final Selectable selectable = data.getSelectable();
     final boolean showCustomControl = component.isShowCheckbox()
         && selectable != Selectable.none && (!selectable.isLeafOnly() || !folder);
 
     writer.startElement(HtmlElements.TOBAGO_TREE_SELECT);
     final Markup markup = component.getMarkup();
     writer.writeClassAttribute(
         component.getCustomClass(),
         TobagoClass.TREE_SELECT.createMarkup(markup),
         // TODO: check rendered page for other selectables. Are them looking good?
         showCustomControl ? BootstrapClass.FORM_CHECK_INLINE : null,
         showCustomControl && selectable.isMulti() ? BootstrapClass.FORM_CHECK : null,
         showCustomControl && selectable.isSingle() ? BootstrapClass.FORM_CHECK : null);
     HtmlRendererUtils.writeDataAttributes(facesContext, writer, component);
 
     if (showCustomControl) {
       writer.startElement(HtmlElements.INPUT);
       writer.writeClassAttribute(BootstrapClass.FORM_CHECK_INPUT);
       if (selectable.isSingle()) {
         writer.writeAttribute(HtmlAttributes.TYPE, HtmlInputTypes.RADIO);
         writer.writeNameAttribute(getClientIdWithoutRowIndex(data, id));
       } else {
         writer.writeAttribute(HtmlAttributes.TYPE, HtmlInputTypes.CHECKBOX);
         writer.writeNameAttribute(id);
       }
       writer.writeAttribute(HtmlAttributes.VALUE, id, false);
       // TODO: ID must be at the outer tag
       writer.writeIdAttribute(id);
       writer.writeAttribute(HtmlAttributes.CHECKED, checked);
 
       writer.endElement(HtmlElements.INPUT);
     }
 
     final String label = component.getLabel();
     writer.startElement(HtmlElements.LABEL);
     writer.writeClassAttribute(TobagoClass.TREE_SELECT__LABEL,
         showCustomControl ? BootstrapClass.FORM_CHECK_LABEL : null);
     final String title = HtmlRendererUtils.getTitleFromTipAndMessages(facesContext, component);
     if (title != null) {
       writer.writeAttribute(HtmlAttributes.TITLE, title, true);
     }
     writer.writeAttribute(HtmlAttributes.FOR, id, false);
     writer.writeText(label);
     writer.endElement(HtmlElements.LABEL);
 
     if (showCustomControl) {
       final CommandMap behaviorCommands = getBehaviorCommands(facesContext, component);
       if (behaviorCommands != null) {
         Map<ClientBehaviors, Command> other = behaviorCommands.getOther();
         if (other != null) {
           Command change = other.get(ClientBehaviors.change);
           change.setExecute(change.getExecute() + " " + tree.getClientId(facesContext));
           change.setRender(change.getRender() + " " + tree.getClientId(facesContext));
         }
       }
       encodeBehavior(writer, behaviorCommands);
     }
 
     writer.endElement(HtmlElements.TOBAGO_TREE_SELECT);
   }
 
   private String getClientIdWithoutRowIndex(final AbstractUIData data, final String id) {
     final char separatorChar = UINamingContainer.getSeparatorChar(FacesContext.getCurrentInstance());
     return id.substring(0, id.indexOf("" + separatorChar + data.getRowIndex() + separatorChar));
   }
 
   @Override
   public void encodeEndInternal(final FacesContext facesContext, final T component) throws IOException {
   }
 }