package org.apache.maven.plugins.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.io.File;
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.Collection;
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Properties;
  import java.util.regex.Matcher;
  import java.util.regex.Pattern;
  
  import org.apache.maven.shared.invoker.InvocationRequest;
  import org.apache.maven.shared.invoker.InvocationRequest.ReactorFailureBehavior;
  import org.codehaus.plexus.util.StringUtils;
  
  /**
   * Provides a convenient facade around the <code>invoker.properties</code>.
   *
   * @author Benjamin Bentmann
   */
  class InvokerProperties
  {
      private static final String SELECTOR_PREFIX = "selector.";
  
      private enum InvocationProperty
      {
          PROJECT( "invoker.project" ),
          GOALS( "invoker.goals" ),
          PROFILES( "invoker.profiles" ),
          MAVEN_OPTS( "invoker.mavenOpts" ),
          FAILURE_BEHAVIOR( "invoker.failureBehavior" ),
          NON_RECURSIVE( "invoker.nonRecursive" ),
          OFFLINE( "invoker.offline" ),
          SYSTEM_PROPERTIES_FILE( "invoker.systemPropertiesFile" ),
          DEBUG( "invoker.debug" ),
          SETTINGS_FILE ( "invoker.settingsFile" ),
          TIMEOUT_IN_SECONDS ( "invoker.timeoutInSeconds" );
  
          private final String key;
  
          InvocationProperty( final String s )
          {
              this.key = s;
          }
  
          @Override
          public String toString()
          {
              return key;
          }
      }
      
      private enum SelectorProperty
      {
          JAVA_VERSION( ".java.version" ),
          MAVEN_VERSION( ".maven.version" ),
          OS_FAMLY( ".os.family" );
          
          private final String suffix;
          
          SelectorProperty( String suffix )
          {
              this.suffix = suffix;
          }
          
          @Override
          public String toString()
          {
              return suffix;
          }
      }
  
      /**
       * The invoker properties being wrapped.
       */
      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.
      */
     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;
     }
 
     /**
      * Gets the name of the corresponding build job.
      *
      * @return The name of the build job or an empty string if not set.
      */
     public String getJobName()
     {
         return this.properties.getProperty( "invoker.name", "" );
     }
 
     /**
      * Gets the description of the corresponding build job.
      *
      * @return The description of the build job or an empty string if not set.
      */
     public String getJobDescription()
     {
         return this.properties.getProperty( "invoker.description", "" );
     }
 
     /**
      * Gets the specification of JRE versions on which this build job should be run.
      *
      * @return The specification of JRE versions or an empty string if not set.
      */
     public String getJreVersion()
     {
         return this.properties.getProperty( "invoker.java.version", "" );
     }
 
     /**
      * Gets the specification of JRE versions on which this build job should be run.
      *
      * @return The specification of JRE versions or an empty string if not set.
      */
     public String getJreVersion( int index )
     {
         return this.properties.getProperty( SELECTOR_PREFIX + index + SelectorProperty.JAVA_VERSION.suffix,
                                             getJreVersion() );
     }
 
     /**
      * Gets the specification of Maven versions on which this build job should be run.
      *
      * @return The specification of Maven versions on which this build job should be run.
      * @since 1.5
      */
     public String getMavenVersion()
     {
         return this.properties.getProperty( "invoker.maven.version", "" );
     }
     
     /**
      * 
      * @param index the selector index
      * @return The specification of Maven versions on which this build job should be run.
      * @since 3.0.0
      */
     public String getMavenVersion( int index )
     {
         return this.properties.getProperty( SELECTOR_PREFIX + index + SelectorProperty.MAVEN_VERSION.suffix,
                                             getMavenVersion() );
     }
 
     /**
      * Gets the specification of OS families on which this build job should be run.
      *
      * @return The specification of OS families or an empty string if not set.
      */
     public String getOsFamily()
     {
         return this.properties.getProperty( "invoker.os.family", "" );
     }
     
     /**
      * Gets the specification of OS families on which this build job should be run.
      *
      * @param index the selector index
      * @return The specification of OS families or an empty string if not set.
      * @since 3.0.0
      */
     public String getOsFamily( int index )
     {
         return this.properties.getProperty( SELECTOR_PREFIX + index + SelectorProperty.OS_FAMLY.suffix,
                                             getOsFamily() );
     }
     
     public Collection<InvokerToolchain> getToolchains()
     {
         return getToolchains( Pattern.compile( "invoker\\.toolchain\\.([^\\.]+)\\.(.+)" ) );
     }
 
     public Collection<InvokerToolchain> getToolchains( int index )
     {
         return getToolchains( Pattern.compile( "selector\\." + index + "\\.invoker\\.toolchain\\.([^\\.]+)\\.(.+)" ) );
     }
 
     private Collection<InvokerToolchain> getToolchains( Pattern p )
     {
         Map<String, InvokerToolchain> toolchains = new HashMap<>();
         for ( Map.Entry<Object, Object> entry : this.properties.entrySet() )
         {
             Matcher m = p.matcher( entry.getKey().toString() );
             if ( m.matches() )
             {
                 String type = m.group( 1 );
                 String providesKey = m.group( 2 );
                 String providesValue = entry.getValue().toString();
 
                 InvokerToolchain tc = toolchains.get( type );
                 if ( tc == null )
                 {
                     tc = new InvokerToolchain( type );
                     toolchains.put( type, tc );
                 }
                 tc.addProvides( providesKey, providesValue );
             }
         }
         return toolchains.values();
     }
 
     /**
      * 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 )
     {
         for ( InvocationProperty prop : InvocationProperty.values() )
         {
             if ( properties.getProperty( prop.toString() + '.' + index ) != null )
             {
                 return true;
             }
         }
         return false;
     }
     
     /**
      * Determines whether these invoker properties contain a build definition for the specified selector index.
      * 
      * @param index the index
      * @return <code>true</code> if the selector with the specified index is defined, <code>false</code> otherwise.
      * @since 3.0.0
      */
     public boolean isSelectorDefined( int index )
     {
         for ( SelectorProperty prop : SelectorProperty.values() )
         {
             if ( properties.getProperty( SELECTOR_PREFIX + index + prop.suffix ) != null )
             {
                 return true;
             }
         }
         return false;
     }
 
     /**
      * 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 project = get( InvocationProperty.PROJECT, index );
         if ( project != null )
         {
             File file = new File( request.getBaseDirectory(), project );
             if ( file.isFile() )
             {
                 request.setBaseDirectory( file.getParentFile() );
                 request.setPomFile( file );
             }
             else
             {
                 request.setBaseDirectory( file );
                 request.setPomFile( null );
             }
         }
 
         String goals = get( InvocationProperty.GOALS, index );
         if ( goals != null )
         {
             request.setGoals( new ArrayList<String>( Arrays.asList( StringUtils.split( goals, ", \t\n\r\f" ) ) ) );
         }
 
         String profiles = get( InvocationProperty.PROFILES, index );
         if ( profiles != null )
         {
             // CHECKSTYLE_OFF: LineLength
             request.setProfiles( new ArrayList<String>( Arrays.asList( StringUtils.split( profiles,
                                                                                           ", \t\n\r\f" ) ) ) );
             // CHECKSTYLE_ON: LineLength
         }
 
         String mvnOpts = get( InvocationProperty.MAVEN_OPTS, index );
         if ( mvnOpts != null )
         {
             request.setMavenOpts( mvnOpts );
         }
 
         String failureBehavior = get( InvocationProperty.FAILURE_BEHAVIOR, index );
         if ( failureBehavior != null )
         {
             ReactorFailureBehavior valueOf =
                 InvocationRequest.ReactorFailureBehavior.valueOfByLongOption( failureBehavior );
             request.setReactorFailureBehavior( valueOf );
         }
 
         String nonRecursive = get( InvocationProperty.NON_RECURSIVE, index );
         if ( nonRecursive != null )
         {
             request.setRecursive( !Boolean.valueOf( nonRecursive ) );
         }
 
         String offline = get( InvocationProperty.OFFLINE, index );
         if ( offline != null )
         {
             request.setOffline( Boolean.valueOf( offline ) );
         }
 
         String debug = get( InvocationProperty.DEBUG, index );
         if ( debug != null )
         {
             request.setDebug( Boolean.valueOf( debug ) );
         }
     }
 
     /**
      * 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 the path to the properties file used to set the system properties for the specified invocation.
      *
      * @param index The index of the invocation, must not be negative.
      * @return The path to the properties file or <code>null</code> if not set.
      */
     public String getSystemPropertiesFile( int index )
     {
         return get( InvocationProperty.SYSTEM_PROPERTIES_FILE, index );
     }
 
     /**
      * Gets the settings file used for the specified invocation.
      * 
      * @param index The index of the invocation, must not be negative.
      * @return the value for the settings file or <code>null</code> if not set.
      */
     public String getSettingsFile( int index )
     {
         return get( InvocationProperty.SETTINGS_FILE, index );
     }
 
     /**
      * Get timeout to execute the project
      * @param index index The index of the invocation, must not be negative.
      * @return the value for the timeout or -1
      */
     public int getTimeoutInSeconds( int index )
     {
         String timeoutInSecondsStr = get( InvocationProperty.TIMEOUT_IN_SECONDS, index );
         if ( StringUtils.isEmpty( timeoutInSecondsStr ) )
         {
             return -1;
         }
         // catch NumberFormatException? well we assume users knows what they do :-)
         return Integer.parseInt( timeoutInSecondsStr );
     }
     /**
      * 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;
     }
 
     private String get( InvocationProperty prop, int index )
     {
         return get( prop.toString(), index );
     }
 }