/*
    * 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.scarborough.standard.tag;
  
  import org.apache.myfaces.tobago.ajax.AjaxUtils;
  import org.apache.myfaces.tobago.component.Attributes;
  import org.apache.myfaces.tobago.component.Facets;
  import org.apache.myfaces.tobago.component.RendererTypes;
  import org.apache.myfaces.tobago.component.UIBox;
  import org.apache.myfaces.tobago.component.UIButton;
  import org.apache.myfaces.tobago.component.UICell;
  import org.apache.myfaces.tobago.component.UICommand;
  import org.apache.myfaces.tobago.component.UIGridLayout;
  import org.apache.myfaces.tobago.component.UIMessages;
  import org.apache.myfaces.tobago.component.UIPanel;
  import org.apache.myfaces.tobago.component.UIPopup;
  import org.apache.myfaces.tobago.config.Configurable;
  import org.apache.myfaces.tobago.context.Markup;
  import org.apache.myfaces.tobago.context.ResourceManagerUtils;
  import org.apache.myfaces.tobago.internal.ajax.AjaxInternalUtils;
  import org.apache.myfaces.tobago.internal.component.AbstractUIPage;
  import org.apache.myfaces.tobago.internal.util.FacesContextUtils;
  import org.apache.myfaces.tobago.layout.Measure;
  import org.apache.myfaces.tobago.renderkit.LayoutComponentRendererBase;
  import org.apache.myfaces.tobago.renderkit.css.Classes;
  import org.apache.myfaces.tobago.renderkit.css.Style;
  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.renderkit.html.util.HtmlRendererUtils;
  import org.apache.myfaces.tobago.util.ComponentUtils;
  import org.apache.myfaces.tobago.util.CreateComponentUtils;
  import org.apache.myfaces.tobago.webapp.TobagoResponseWriter;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import javax.faces.application.FacesMessage;
  import javax.faces.component.UIComponent;
  import javax.faces.context.FacesContext;
  import java.io.IOException;
  import java.util.List;
  import java.util.Map;
  
  public class MessagesRenderer extends LayoutComponentRendererBase {
  
    private static final Logger LOG = LoggerFactory.getLogger(MessagesRenderer.class);
  
    public static final String CLOSE_POPUP = "closePopup";
  
    @Override
    public void encodeEnd(FacesContext facesContext, UIComponent component) throws IOException {
  
      UIMessages messages = (UIMessages) component;
  
      if (messages.isConfirmation()) {
        createPopup(facesContext, messages);
        return;
      }
  
      TobagoResponseWriter writer = HtmlRendererUtils.getTobagoResponseWriter(facesContext);
  
      if (LOG.isDebugEnabled()) {
        LOG.debug("facesContext is " + facesContext.getClass().getName());
      }
      List<UIMessages.Item> messageList = messages.createMessageList(facesContext);
  
      if (messageList.size() > 0) { // in ie empty span gets a height
        writer.startElement(HtmlElements.SPAN, messages);
        writer.writeClassAttribute(Classes.create(messages));
        HtmlRendererUtils.writeDataAttributes(facesContext, writer, messages);
        writer.writeStyleAttribute(new Style(facesContext, messages));
  
        // with id
        /*String focusId = null;
        Iterator clientIds;
        if (ComponentUtils.getBooleanAttribute(messages, Attributes.GLOBAL_ONLY)) {
          ArrayList<String> list = new ArrayList<String>(1);
          list.add(null);
          clientIds = list.iterator();
        } else {
          clientIds = facesContext.getClientIdsWithMessages();
        }*/
 
       for (UIMessages.Item item : messageList) {
         encodeMessage(writer, messages, item.getFacesMessage(), item.getClientId());
       }
 /*
       while(clientIds.hasNext()) {
         String clientId = (String) clientIds.next();
         encodeMessagesForId(facesContext, writer, clientId, showSummary, showDetail);
         if (focusId == null) {
           focusId = clientId;
         }
       }
   todo: don't forget: focus
       if (focusId != null) {
         ComponentUtils.findPage(facesContext, messages).setFocusId(focusId);
       }
 */
       writer.endElement(HtmlElements.SPAN);
       if (messages.getFor() == null) {
         String clientId = messages.getClientId(facesContext);
         writer.startElement(HtmlElements.INPUT, null);
         writer.writeAttribute(HtmlAttributes.VALUE, Boolean.TRUE.toString(), false);
         writer.writeAttribute(HtmlAttributes.ID,
             clientId + ComponentUtils.SUB_SEPARATOR + "messagesExists", false);
         writer.writeAttribute(HtmlAttributes.NAME,
             clientId + ComponentUtils.SUB_SEPARATOR + "messagesExists", false);
         writer.writeAttribute(HtmlAttributes.TYPE, HtmlInputTypes.HIDDEN, false);
         writer.endElement(HtmlElements.INPUT);
       }
     }
     if (messages.getFor() == null
         && !AjaxUtils.isAjaxRequest(facesContext)) {
       AjaxInternalUtils.storeMessagesClientIds(facesContext, messages);
     }
   }
 
   private void createPopup(FacesContext facesContext, UIMessages messages) {
     if (LOG.isDebugEnabled()) {
       LOG.debug("POPUP");
     }
     String id = messages.getId() != null ? messages.getId() + "popup" : facesContext.getViewRoot().createUniqueId();
     final UIPopup popup = (UIPopup)
         CreateComponentUtils.createComponent(facesContext, UIPopup.COMPONENT_TYPE, RendererTypes.POPUP, id);
     popup.getAttributes().put(Attributes.Z_INDEX, 10);
 
     AbstractUIPage page = ComponentUtils.findPage(facesContext, messages);
 
     popup.setWidth(page.getCurrentWidth().subtract(200));
     popup.setHeight(page.getCurrentHeight().subtract(200));
     popup.setLeft(Measure.valueOf(100));
     popup.setTop(Measure.valueOf(100));
     popup.setRendered(true);
     popup.setActivated(true);
     popup.onComponentPopulated(facesContext, messages);
     FacesContextUtils.addPopup(facesContext, popup);
 
     Map<String, Object> okButtonAttributes = popup.getAttributes();
     okButtonAttributes.put(Attributes.POPUP_RESET, Boolean.TRUE);
 
     final UIComponent box = CreateComponentUtils.createComponent(
         facesContext, UIBox.COMPONENT_TYPE, RendererTypes.BOX);
     popup.getChildren().add(box);
     box.setId("box");
     // TODO: set string resources in renderer
     box.getAttributes().put(Attributes.LABEL, ResourceManagerUtils.getPropertyNotNull(
         facesContext, "tobago", "tobago.message.confirmation.title"));
     UIComponent layout = CreateComponentUtils.createComponent(
         facesContext, UIGridLayout.COMPONENT_TYPE, RendererTypes.GRID_LAYOUT, "layout");
     box.getFacets().put(Facets.LAYOUT, layout);
     layout.getAttributes().put(Attributes.ROWS, "*;auto");
     layout.getAttributes().put(Attributes.MARGIN, Measure.valueOf(10));
 
     final UICell scrollPanel = (UICell)
         CreateComponentUtils.createComponent(facesContext, UICell.COMPONENT_TYPE, "Cell", "messagePanel");
     box.getChildren().add(scrollPanel);
 
     messages.getParent().getChildren().remove(messages);
     messages.setConfirmation(false);
     scrollPanel.onComponentPopulated(facesContext, messages);
     scrollPanel.setScrollbars("auto");
     scrollPanel.getChildren().add(messages);
 
     UIComponent buttonPanel = CreateComponentUtils.createComponent(
         facesContext, UIPanel.COMPONENT_TYPE, RendererTypes.PANEL, "buttonPanel");
     layout = CreateComponentUtils.createComponent(
         facesContext, UIGridLayout.COMPONENT_TYPE, RendererTypes.GRID_LAYOUT, "buttonPanelLayout");
     buttonPanel.getFacets().put(Facets.LAYOUT, layout);
     layout.getAttributes().put(Attributes.COLUMNS, "*;100px");
     layout.getAttributes().put(Attributes.ROWS, "auto");
 
     box.getChildren().add(buttonPanel);
 
     final UICell space = (UICell)
         CreateComponentUtils.createComponent(facesContext, UICell.COMPONENT_TYPE, "Cell", "space");
     buttonPanel.getChildren().add(space);
     space.onComponentPopulated(facesContext, messages);
 
     final UICommand okButton = (UICommand) CreateComponentUtils.createComponent(
         facesContext, UIButton.COMPONENT_TYPE, RendererTypes.BUTTON, CLOSE_POPUP);
     buttonPanel.getChildren().add(okButton);
     okButtonAttributes = okButton.getAttributes();
     okButtonAttributes.put(Attributes.LABEL, ResourceManagerUtils.getPropertyNotNull(
         facesContext, "tobago", "tobago.message.confirmation.okay"));
     okButtonAttributes.put("popupClose", "immediate");
   }
 
   /*
     private void encodeMessagesForId(FacesContext facesContext,
         TobagoResponseWriter writer, String clientId, boolean showSummary, boolean showDetail) throws IOException {
       Iterator iterator = facesContext.getMessages(clientId);
       while (iterator.hasNext()) {
         FacesMessage message = (FacesMessage) iterator.next();
         if (LOG.isDebugEnabled()) {
           LOG.debug("message = " + message.getSummary());
         }
         encodeMessage(writer, message, clientId, showSummary, showDetail);
       }
     }
   */
   private void encodeMessage(TobagoResponseWriter writer, UIMessages messages, FacesMessage message, String clientId)
       throws IOException {
 
     String summary = message.getSummary();
     String detail = message.getDetail();
     writer.startElement(HtmlElements.LABEL, null);
     if (clientId != null) {
       writer.writeAttribute(HtmlAttributes.FOR, clientId, false);
     }
     writer.writeAttribute(HtmlAttributes.TITLE, detail, true);
     final Markup markup = ComponentUtils.markupOfSeverity(message.getSeverity());
     writer.writeClassAttribute(Classes.create(messages, "item", markup));
     boolean writeEmptyText = true;
     if (summary != null && messages.isShowSummary()) {
       writer.writeText(summary);
       writeEmptyText = false;
       if (detail != null && messages.isShowDetail()) {
         writer.writeText(" ");
       }
     }
     if (detail != null && messages.isShowDetail()) {
       writeEmptyText = false;
       writer.writeText(detail);
     }
     if (writeEmptyText) {
       writer.writeText("");
     }
     writer.endElement(HtmlElements.LABEL);
     writer.startElement(HtmlElements.BR, null);
     writer.endElement(HtmlElements.BR);
   }
 
   @Override
   public Measure getPreferredHeight(FacesContext facesContext, Configurable component) {
     Measure measure = super.getPreferredHeight(facesContext, component);
     UIMessages messages = (UIMessages) component;
     int count = messages.createMessageList(facesContext).size();
     return measure.multiply(count);
   }
 }