/**
    * Copyright 2010-2012 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    *
   * 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.codehaus.mojo.license.model;
  
  import org.apache.commons.lang.builder.ToStringBuilder;
  import org.apache.commons.lang.builder.ToStringStyle;
  import org.codehaus.mojo.license.MojoHelper;
  import org.codehaus.plexus.util.IOUtil;
  
  import java.io.BufferedReader;
  import java.io.IOException;
  import java.io.InputStreamReader;
  import java.io.Reader;
  import java.net.URL;
  
  /**
   * The model of a license.
   *
   * @author tchemit <chemit@codelutin.com>
   * @since 1.0
   */
  public class License
  {
  
      public static final String LICENSE_HEADER_FILE = "header.txt";
  
      public static final String LICENSE_CONTENT_FILE = "license.txt";
  
      /**
       * base url of license (directory where to find license files)
       */
      protected URL baseURL;
  
      /**
       * the name of the licenses (ex lgpl-3.0)
       */
      protected String name;
  
      /**
       * the description of the license
       */
      protected String description;
  
      /**
       * url of the license's content
       */
      protected URL licenseURL;
  
      /**
       * url of the license header's content
       */
      protected URL headerURL;
  
      public License()
      {
      }
  
      public String getName()
      {
          return name;
      }
  
      public URL getLicenseURL()
      {
          if ( licenseURL == null )
          {
              licenseURL = MojoHelper.getUrl( getBaseURL(), LICENSE_CONTENT_FILE );
          }
          return licenseURL;
      }
  
      public URL getHeaderURL()
      {
          if ( headerURL == null )
          {
              headerURL = MojoHelper.getUrl( getBaseURL(), LICENSE_HEADER_FILE );
          }
          return headerURL;
      }
  
      public String getDescription()
      {
          return description;
      }
  
      public URL getBaseURL()
     {
         return baseURL;
     }
 
     public String getLicenseContent( String encoding )
         throws IOException
     {
         if ( baseURL == null )
         {
             throw new IllegalStateException( "no baseURL defined, can not obtain license content in " + this );
         }
 
         Reader r = new BufferedReader( new InputStreamReader( getLicenseURL().openStream(), encoding ) );
         try
         {
             return IOUtil.toString( r );
         }
         finally
         {
             r.close();
         }
     }
 
     public String getHeaderContent( String encoding )
         throws IOException
     {
         if ( baseURL == null )
         {
             throw new IllegalStateException( "no baseURL defined, can not obtain header content in " + this );
         }
         Reader r = new BufferedReader( new InputStreamReader( getHeaderURL().openStream(), encoding ) );
         try
         {
             return IOUtil.toString( r );
         }
         finally
         {
             r.close();
         }
     }
 
     public void setName( String name )
     {
         this.name = name;
     }
 
     public void setDescription( String description )
     {
         this.description = description;
     }
 
     public void setBaseURL( URL baseURL )
     {
         this.baseURL = baseURL;
     }
 
     public void setLicenseURL( URL licenseURL )
     {
         this.licenseURL = licenseURL;
     }
 
     public void setHeaderURL( URL headerURL )
     {
         this.headerURL = headerURL;
     }
 
     @Override
     public String toString()
     {
         ToStringBuilder builder = new ToStringBuilder( this, ToStringStyle.MULTI_LINE_STYLE );
         builder.append( "name", name );
         builder.append( "description", description );
         builder.append( "licenseURL", licenseURL );
         builder.append( "headerURL", headerURL );
         return builder.toString();
     }
 }