/*
    * Copyright (c) 2011-2024 PrimeFaces Extensions
    *
    *  Permission is hereby granted, free of charge, to any person obtaining a copy
    *  of this software and associated documentation files (the "Software"), to deal
    *  in the Software without restriction, including without limitation the rights
    *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    *  copies of the Software, and to permit persons to whom the Software is
    *  furnished to do so, subject to the following conditions:
   *
   *  The above copyright notice and this permission notice shall be included in
   *  all copies or substantial portions of the Software.
   *
   *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   *  THE SOFTWARE.
   */
  package org.primefaces.extensions.component.echarts;
  
  import java.io.IOException;
  
  import javax.faces.component.UIComponent;
  import javax.faces.context.FacesContext;
  import javax.faces.context.ResponseWriter;
  
  import org.primefaces.renderkit.CoreRenderer;
  import org.primefaces.util.FacetUtils;
  import org.primefaces.util.FastStringWriter;
  import org.primefaces.util.WidgetBuilder;
  
  public class EChartRenderer extends CoreRenderer {
  
      @Override
      public void decode(FacesContext context, UIComponent component) {
          super.decodeBehaviors(context, component);
      }
  
      @Override
      public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
          EChart chart = (EChart) component;
  
          encodeMarkup(context, chart);
          encodeScript(context, chart);
      }
  
      protected void encodeMarkup(FacesContext context, EChart chart) throws IOException {
          ResponseWriter writer = context.getResponseWriter();
          String clientId = chart.getClientId(context);
          String style = chart.getStyle();
          String styleClass = getStyleClassBuilder(context).add("ui-chart").add(chart.getStyleClass()).build();
  
          writer.startElement("div", null);
          writer.writeAttribute("id", clientId, null);
          writer.writeAttribute("class", styleClass, "styleClass");
  
          if (style != null) {
              writer.writeAttribute("style", style, "style");
          }
          else {
              writer.writeAttribute("style", "width: 600px; height: 400px;", "style");
          }
          writer.endElement("div");
      }
  
      protected void encodeScript(FacesContext context, EChart chart) throws IOException {
          WidgetBuilder wb = getWidgetBuilder(context);
          wb.init("ExtEChart", chart)
                      .attr("theme", chart.getTheme(), "default")
                      .nativeAttr("config", renderConfig(context, chart))
                      .nativeAttr("extender", chart.getExtender());
  
          encodeClientBehaviors(context, chart);
  
          wb.finish();
      }
  
      /**
       * Allow value to be a property or a facet of raw JSON.
       */
      protected String renderConfig(FacesContext context, EChart chart) throws IOException {
          UIComponent facet = chart.getFacet("value");
          if (FacetUtils.shouldRenderFacet(facet)) {
              // swap writers
              ResponseWriter originalWriter = context.getResponseWriter();
              FastStringWriter fsw = new FastStringWriter();
              ResponseWriter clonedWriter = originalWriter.cloneWithWriter(fsw);
              context.setResponseWriter(clonedWriter);
  
              // encode the component
              facet.encodeAll(context);
  
              // restore the original writer
              context.setResponseWriter(originalWriter);
              return fsw.toString();
          }
         else {
             return chart.getValue();
         }
     }
 
 }