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 );

     }

 }