package org.apache.maven.plugin.jira;
   
   /*
    * 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.
   */
  
  import java.text.NumberFormat;
  import java.text.ParsePosition;
  import java.util.HashMap;
  import java.util.Map;
  import java.util.StringTokenizer;
  
  import org.apache.commons.httpclient.HttpClient;
  import org.apache.commons.httpclient.methods.GetMethod;
  import org.apache.maven.plugin.logging.Log;
  import org.apache.maven.wagon.proxy.ProxyInfo;
  
  /**
   * A helper class with common JIRA related functionality.
   *
   * @author Dennis Lundberg
   * @version $Id: JiraHelper.java 1379884 2012-09-01 22:32:02Z dennisl $
   */
  public class JiraHelper
  {
      private static final String PID = "?pid="; //MCHANGES-281 addd ?
  
      /**
       * Parse out the base URL for JIRA and the JIRA project id from the issue
       * management URL.
       *
       * @param issueManagementUrl The URL to the issue management system
       * @return A <code>Map</code> containing the URL and project id
       */
      static Map<String,String> getJiraUrlAndProjectId( String issueManagementUrl )
      {
          String url = issueManagementUrl;
  
          if ( url.endsWith( "/" ) )
          {
              // MCHANGES-218
              url = url.substring( 0, url.lastIndexOf( '/' ) );
          }
  
          // chop off the parameter part
          int pos = url.indexOf( '?' );
  
          // and get the id while we're at it
          String id = "";
  
          if ( pos >= 0 )
          {
              // project id
              id = url.substring( url.lastIndexOf( '=' ) + 1 );
          }
  
          String jiraUrl = url.substring( 0, url.lastIndexOf( '/' ) );
  
          if ( jiraUrl.endsWith( "secure" ) )
          {
              jiraUrl = jiraUrl.substring( 0, jiraUrl.lastIndexOf( '/' ) );
          }
          else
          {
              // If the issueManagement.url points to a component, then "browse"
              // will not be at the end - it might be in the middle somewhere.
              // Try to find it.
              final int index = jiraUrl.indexOf( "/browse" );
              if ( index != -1 )
              {
                  jiraUrl = jiraUrl.substring( 0, index );
              }
          }
  
          HashMap<String,String> urlMap = new HashMap<String,String>( 4 );
  
          urlMap.put( "url", jiraUrl );
  
          urlMap.put( "id", id );
  
          return urlMap;
      }
  
      /**
      * Try to get a JIRA pid from the issue management URL.
      *
      * @param log     Used to tell the user what happened
      * @param issueManagementUrl The URL to the issue management system
      * @param client  The client used to connect to JIRA
      * @return The JIRA id for the project, or null if it can't be found
      */
     public static String getPidFromJira( Log log, String issueManagementUrl, HttpClient client )
     {
         String jiraId = null;
         GetMethod gm = new GetMethod( issueManagementUrl );
 
         String projectPage;
         try
         {
             client.executeMethod( gm );
             log.debug( "Successfully reached JIRA." );
             projectPage = gm.getResponseBodyAsString();
         }
         catch ( Exception e )
         {
             if ( log.isDebugEnabled() )
             {
                 log.error( "Unable to reach the JIRA project page:", e );
             }
             else
             {
                 log.error( "Unable to reach the JIRA project page. Cause is: " + e.getLocalizedMessage() );
             }
             return null;
         }
 
         int pidIndex = projectPage.indexOf( PID );
 
         if ( pidIndex == -1 )
         {
             log.error( "Unable to extract a JIRA pid from the page at the url " + issueManagementUrl );
         }
         else
         {
             NumberFormat nf = NumberFormat.getInstance();
             Number pidNumber = nf.parse( projectPage, new ParsePosition( pidIndex + PID.length() ) );
             jiraId = Integer.toString( pidNumber.intValue() );
             log.debug( "Found the pid " + jiraId + " at " + issueManagementUrl );
         }
         return jiraId;
     }
 
     /**
      * Check if the specified host is in the list of non proxy hosts.
      * <p/>
      * Method copied from org.apache.maven.wagon.proxy.ProxyUtils. Can be deleted when maven-changes-plugin
      * references a more recent version of maven-project
      *
      * @param proxy      the proxy info object contains set of properties.
      * @param targetHost the target hostname
      * @return true if the hostname is in the list of non proxy hosts, false otherwise.
      */
     public static boolean validateNonProxyHosts( ProxyInfo proxy, String targetHost )
     {
         String tHost = targetHost;
         if ( tHost == null )
         {
             tHost = new String();
         }
         if ( proxy == null )
         {
             return false;
         }
         String nonProxyHosts = proxy.getNonProxyHosts();
         if ( nonProxyHosts == null )
         {
             return false;
         }
 
         StringTokenizer tokenizer = new StringTokenizer( nonProxyHosts, "|" );
 
         while ( tokenizer.hasMoreTokens() )
         {
             String pattern = tokenizer.nextToken();
             pattern = pattern.replaceAll( "\\.", "\\\\." ).replaceAll( "\\*", ".*" );
             if ( tHost.matches( pattern ) )
             {
                 return true;
             }
         }
         return false;
     }
 
     private JiraHelper()
     {
         // utility class
     }
 
     /**
      * Parse out the base URL for JIRA and the JIRA project name from the issue
      * management URL.
      * The issue management URL is assumed to be of the format http(s)://host:port/browse/{projectname}
      *
      * @param issueManagementUrl The URL to the issue management system
      * @return A <code>Map</code> containing the URL and project name
      * @since 2.8
      */
     public static Map<String, String> getJiraUrlAndProjectName( String issueManagementUrl )
     {
         final int indexBrowse = issueManagementUrl.indexOf( "/browse/" );
 
         String jiraUrl = "";
         String project = "";
 
         if ( indexBrowse != -1 )
         {
             jiraUrl = issueManagementUrl.substring( 0, indexBrowse );
 
             final int indexBrowseEnd = indexBrowse + "/browse/".length();
 
             final int indexProject = issueManagementUrl.indexOf( "/", indexBrowseEnd );
 
             if ( indexProject != -1 )
             {
                 //Project name has trailing '/'
                 project = issueManagementUrl.substring( indexBrowseEnd, indexProject );
             }
             else
             {
                 //Project name without trailing '/'
                 project = issueManagementUrl.substring( indexBrowseEnd );
             }
         }
         else
         {
             throw new IllegalArgumentException( "Invalid browse URL" );
         }
 
         HashMap<String, String> urlMap = new HashMap<String, String>( 4 );
         urlMap.put( "url", jiraUrl );
         urlMap.put( "project", project );
 
         return urlMap;
     }
 
     /**
      * @since 2.8
      */
     public static String getBaseUrl( String url )
     {
         int index = url.indexOf( "/", 8 ); //Ignore http:// or https://
         return url.substring( 0, index );
     }
 }