/*
    * Copyright 2007-2013 smartics, Kronseder & Reiner GmbH
    *
    * Licensed 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 de.smartics.exceptions.report.renderer.html;
  
  import org.apache.commons.lang.StringEscapeUtils;
  
  import com.thoughtworks.qdox.model.DocletTag;
  import com.thoughtworks.qdox.model.JavaAnnotatedElement;
  import com.thoughtworks.qdox.model.JavaClass;
  import com.thoughtworks.qdox.model.JavaField;
  
  import de.smartics.exceptions.report.renderer.SeeTagRenderer;
  
  /**
   * Default implementation that renders the see and link tags as HTML.
   */
  public class HtmlSeeTagRenderer implements SeeTagRenderer
  {
    // ********************************* Fields *********************************
  
    // --- constants ------------------------------------------------------------
  
    // --- members --------------------------------------------------------------
  
    // ****************************** Initializer *******************************
  
    // ****************************** Constructors ******************************
  
    // ****************************** Inner Classes *****************************
  
    // ********************************* Methods ********************************
  
    // --- init -----------------------------------------------------------------
  
    // --- get&set --------------------------------------------------------------
  
    // --- business -------------------------------------------------------------
  
    // CHECKSTYLE:OFF
    @Override
    public StringBuilder render(final StringBuilder buffer, final DocletTag tag)
    {
      final String text = tag.getValue();
      final String textFragment;
      final int length = text.length();
      if (text.startsWith("<")) // NOPMD
      {
        textFragment = text;
      }
      else if (length > 2 && text.startsWith("\"") && text.endsWith("\""))
      {
        textFragment =
            "<i>" + StringEscapeUtils.escapeHtml(text.substring(1, length - 1))
                + "</i>";
      }
      else if (length > 1 && text.startsWith("#")) // NOPMD
      {
        final JavaAnnotatedElement context = tag.getContext();
        if (context instanceof JavaField)
        {
          final JavaClass type = ((JavaField) context).getDeclaringClass();
          final String fqn = type.getFullyQualifiedName();
          final String id = text.substring(1);
          textFragment = "<a href=\"#" + fqn + '_' + id + "\">" + id + "</a>";
        }
        else
        {
          textFragment = StringEscapeUtils.escapeHtml(text);
        }
      }
      else if (length > 1 && text.contains("#"))
      {
        final JavaClass classDoc = Utils.referencedClass(tag);
        if (classDoc != null && classDoc.isA("de.smartics.exceptions.core.Code"))
        {
          final String id = Utils.referencedMemberName(tag);
          final String fqn = classDoc.getFullyQualifiedName();
          textFragment =
              "<a href=\"#" + fqn + '_' + id + "\">" + classDoc.getName() + '.'
                  + id + "</a>";
        }
        else
        {
          textFragment = StringEscapeUtils.escapeHtml(text);
        }
      }
     else
     {
       textFragment = StringEscapeUtils.escapeHtml(text);
     }
     buffer.append("<dt>See:</dt><dd>").append(textFragment).append("</dd>\n");
     return buffer;
   }
   // CHECKSTYLE:ON
 
   // --- object basics --------------------------------------------------------
 
 }