package org.apache.maven.plugin.invoker;

 /*

  * 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.util.ArrayList;

 import java.util.Arrays;

 import java.util.Properties;

 import org.apache.maven.shared.invoker.InvocationRequest;

 import org.codehaus.plexus.util.StringUtils;

 /**

  * Provides a convenient facade around the <code>invoker.properties</code>.

  * 

  * @author Benjamin Bentmann

  * @version $Id: InvokerProperties.java 688545 2008-08-24 18:38:59Z bentmann $

  */

 class InvokerProperties

 {

     /**

      * The invoker properties being wrapped, never <code>null</code>.

      */

     private final Properties properties;

     /**

      * Creates a new facade for the specified invoker properties. The properties will not be copied, so any changes to

      * them will be reflected by the facade.

      * 

      * @param properties The invoker properties to wrap, may be <code>null</code> if none.

      */

     public InvokerProperties( Properties properties )

     {

         this.properties = ( properties != null ) ? properties : new Properties();

     }

     /**

      * Gets the invoker properties being wrapped.

      * 

      * @return The invoker properties being wrapped, never <code>null</code>.

      */

     public Properties getProperties()

     {

         return this.properties;

     }

     /**

      * Determines whether these invoker properties contain a build definition for the specified invocation index.

      * 

      * @param index The one-based index of the invocation to check for, must not be negative.

      * @return <code>true</code> if the invocation with the specified index is defined, <code>false</code> otherwise.

      */

     public boolean isInvocationDefined( int index )

     {

         return properties.getProperty( "invoker.goals." + index ) != null;

     }

     /**

      * Configures the specified invocation request from these invoker properties. Settings not present in the invoker

      * properties will be left unchanged in the invocation request.

      * 

      * @param request The invocation request to configure, must not be <code>null</code>.

      * @param index The one-based index of the invocation to configure, must not be negative.

      */

     public void configureInvocation( InvocationRequest request, int index )

     {

         String goals = get( "invoker.goals", index );

         if ( goals != null )

         {

             request.setGoals( new ArrayList( Arrays.asList( StringUtils.split( goals, ", \t\n\r\f" ) ) ) );

         }

         String profiles = get( "invoker.profiles", index );

         if ( profiles != null )

         {

             request.setProfiles( new ArrayList( Arrays.asList( StringUtils.split( profiles, ", \t\n\r\f" ) ) ) );

         }

         String mvnOpts = get( "invoker.mavenOpts", index );

         if ( mvnOpts != null )

         {

             request.setMavenOpts( mvnOpts );

         }

         String failureBehavior = get( "invoker.failureBehavior", index );

         if ( failureBehavior != null )

         {

             request.setFailureBehavior( failureBehavior );

         }

         String nonRecursive = get( "invoker.nonRecursive", index );

         if ( nonRecursive != null )

         {

             request.setRecursive( !Boolean.valueOf( nonRecursive ).booleanValue() );

         }

     }

     /**

      * Checks whether the specified exit code matches the one expected for the given invocation.

      * 

      * @param exitCode The exit code of the Maven invocation to check.

      * @param index The index of the invocation for which to check the exit code, must not be negative.

      * @return <code>true</code> if the exit code is zero and a success was expected or if the exit code is non-zero and

      *         a failue was expected, <code>false</code> otherwise.

      */

     public boolean isExpectedResult( int exitCode, int index )

     {

         boolean nonZeroExit = "failure".equalsIgnoreCase( get( "invoker.buildResult", index ) );

         return ( exitCode != 0 ) == nonZeroExit;

     }

     /**

      * Gets a value from the invoker properties. The invoker properties are intended to describe the invocation settings

      * for multiple builds of the same project. For this reason, the properties are indexed. First, a property named

      * <code>key.index</code> will be queried. If this property does not exist, the value of the property named

      * <code>key</code> will finally be returned.

      * 

      * @param key The (base) key for the invoker property to lookup, must not be <code>null</code>.

      * @param index The index of the invocation for which to retrieve the value, must not be negative.

      * @return The value for the requested invoker property or <code>null</code> if not defined.

      */

     String get( String key, int index )

     {

         if ( index < 0 )

         {

             throw new IllegalArgumentException( "invalid invocation index: " + index );

         }

         String value = properties.getProperty( key + '.' + index );

         if ( value == null )

         {

             value = properties.getProperty( key );

         }

         return value;

     }

 }