/*
    * 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.webapp;
  
  import org.apache.commons.lang.StringUtils;
  import org.apache.myfaces.tobago.component.Attributes;
  import org.apache.myfaces.tobago.internal.util.Deprecation;
  import org.apache.myfaces.tobago.renderkit.html.HtmlAttributes;
  import org.apache.myfaces.tobago.webapp.TobagoResponseWriter;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import javax.faces.component.UIComponent;
  import javax.faces.context.ResponseWriter;
  import java.io.IOException;
  import java.io.Writer;
  import java.util.EmptyStackException;
  import java.util.Stack;
  
  public class DebugResponseWriterWrapper extends TobagoResponseWriter {
  
    private Stack<String> stack = new Stack<String>();
  
    private static final Logger LOG = LoggerFactory.getLogger(DebugResponseWriterWrapper.class);
  
    private final TobagoResponseWriter responseWriter;
  
    public DebugResponseWriterWrapper(TobagoResponseWriter responseWriter) {
      this.responseWriter = responseWriter;
    }
  
    public void write(String string) throws IOException {
      responseWriter.write(string);
    }
  
    public void writeComment(Object comment) throws IOException {
      String commentStr = comment.toString();
      if (commentStr.indexOf("--") > 0) {
        LOG.error("Comment must not contain the sequence '--', comment = '" + comment + "'.",
            new IllegalArgumentException());
  
        commentStr = StringUtils.replace(commentStr, "--", "++");
      }
      responseWriter.writeComment(commentStr);
    }
  
    public ResponseWriter cloneWithWriter(Writer writer) {
      return new DebugResponseWriterWrapper((TobagoResponseWriter) responseWriter.cloneWithWriter(writer));
    }
  
    @Deprecated
    public void writeAttribute(String name, Object value, String property) throws IOException {
      responseWriter.writeAttribute(name, value, property);
    }
  
    @Deprecated
    public void writeText(Object text, String property) throws IOException {
      responseWriter.writeText(text, property);
    }
  
    public void flush() throws IOException {
      responseWriter.flush();
    }
  
    public void writeAttribute(String name, String value, boolean escape) throws IOException {
      responseWriter.writeAttribute(name, value, escape);
    }
  
    @Override
    @Deprecated
    public String getStyleClasses() {
      return responseWriter.getStyleClasses();
    }
  
    /**
     * @deprecated since Tobago 1.5.0
     */
    @Deprecated
    public void writeClassAttribute() throws IOException {
      Deprecation.LOG.warn("Please use writeClassAttribute(org.apache.myfaces.tobago.renderkit.css.Classes)");
      responseWriter.writeAttribute(HtmlAttributes.CLASS, null, Attributes.STYLE_CLASS);
    }
 
   public String getContentType() {
     return responseWriter.getContentType();
   }
 
   public String getCharacterEncoding() {
     return responseWriter.getCharacterEncoding();
   }
 
   public void startDocument() throws IOException {
     responseWriter.startDocument();
   }
 
   public void endDocument() throws IOException {
     responseWriter.endDocument();
   }
 
   @Override
   public void writeJavascript(String script) throws IOException {
     responseWriter.writeJavascript(script);
   }
 
   @Override
   public void endJavascript() throws IOException {
     responseWriter.endJavascript();
   }
 
   @Override
   public void startJavascript() throws IOException {
     responseWriter.startJavascript();
   }
 
   public void writeURIAttribute(String name, Object value, String property) throws IOException {
     responseWriter.writeURIAttribute(name, value, property);
   }
 
   public void writeText(char[] text, int off, int len) throws IOException {
     responseWriter.writeText(text, off, len);
   }
 
   public void write(char[] chars, int i, int i1) throws IOException {
     responseWriter.write(chars, i, i1);
   }
 
   public void close() throws IOException {
     responseWriter.close();
   }
 
   @Override
   public void startElement(String name, UIComponent currentComponent)
       throws IOException {
     if (LOG.isDebugEnabled()) {
       LOG.debug("start element: '" + name + "'");
     }
     stack.push(name);
     responseWriter.startElement(name, currentComponent);
   }
 
   @Override
   public void endElement(String name) throws IOException {
     if (LOG.isDebugEnabled()) {
       LOG.debug("end element: '" + name + "'");
     }
     String top = "";
     try {
       top = stack.pop();
     } catch (EmptyStackException e) {
       LOG.error("Failed to close element \"" + name + "\"!", e);
     }
 
     if (!top.equals(name)) {
       LOG.error("Element end with name='" + name + "' doesn't match with top element on the stack='" + top + "'.",
           new IllegalArgumentException());
     }
     responseWriter.endElement(name);
   }
 }