/*-
 * Copyright (c) 2014-2015 Red Hat, Inc.
 *
 * Licensed 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.
 */
package org.fedoraproject.xmvn.resolver.impl;

import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Properties;

import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;

import org.codehaus.plexus.util.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import org.fedoraproject.xmvn.artifact.Artifact;
import org.fedoraproject.xmvn.config.Configurator;
import org.fedoraproject.xmvn.config.ResolverSettings;
import org.fedoraproject.xmvn.metadata.ArtifactMetadata;
import org.fedoraproject.xmvn.resolver.ResolutionRequest;
import org.fedoraproject.xmvn.resolver.ResolutionResult;
import org.fedoraproject.xmvn.resolver.Resolver;
import org.fedoraproject.xmvn.utils.FileUtils;

/**
 * Default implementation of XMvn {@code Resolver} interface.
 * <p>
 * <strong>WARNING</strong>: This class is part of internal implementation of XMvn and it is marked as public only for
 * technical reasons. This class is not part of XMvn API. Client code using XMvn should <strong>not</strong> reference
 * it directly.
 * 
 * @author Mikolaj Izdebski
 */
@Named
@Singleton
public class DefaultResolver
    implements Resolver
{
    private final Logger logger = LoggerFactory.getLogger( DefaultResolver.class );

    private final MetadataResolver metadataResolver;

    private static final RpmDb rpmdb = new RpmDb();

    private final Resolver localRepoResolver;

    private final EffectivePomGenerator pomGenerator;

    @Inject
    public DefaultResolver( @Named( "local-repo" ) Resolver localRepoResolver, Configurator configurator )
    {
        this.localRepoResolver = localRepoResolver;

        ResolverSettings settings = configurator.getConfiguration().getResolverSettings();
        metadataResolver = new MetadataResolver( settings.getMetadataRepositories() );
        pomGenerator = new EffectivePomGenerator();
    }

    @Override
    public ResolutionResult resolve( ResolutionRequest request )
    {
        Properties properties = new Properties();
        properties.putAll( System.getProperties() );

        ResolutionResult localRepoResult = localRepoResolver.resolve( request );
        if ( localRepoResult.getArtifactPath() != null )
            return localRepoResult;

        Artifact artifact = request.getArtifact();
        logger.debug( "Trying to resolve artifact {}", artifact );

        String compatVersion;
        ArtifactMetadata metadata = metadataResolver.resolveArtifactMetadata( artifact );

        if ( metadata == null )
        {
            metadata = metadataResolver.resolveArtifactMetadata( artifact.setVersion( Artifact.DEFAULT_VERSION ) );
            compatVersion = null;
        }
        else
        {
            compatVersion = artifact.getVersion();
        }

        if ( metadata != null )
        {
            properties.putAll( metadata.getProperties() );
        }

        if ( metadata != null
            && !StringUtils.equals( properties.getProperty( "xmvn.resolver.disableEffectivePom" ), "true" )
            && StringUtils.equals( metadata.getExtension(), "pom" )
            && ( !StringUtils.equals( properties.getProperty( "type" ), "pom" ) || metadata.getPath() == null ) )
        {
            try
            {
                Path pomPath = pomGenerator.generateEffectivePom( metadata );
                metadata.setPath( pomPath.toString() );
            }
            catch ( IOException e )
            {
                logger.warn( "Failed to generate effective POM", e );
                metadata = null;
            }
        }

        if ( metadata != null )
        {
            Path artifactPath = Paths.get( metadata.getPath() );
            artifactPath = FileUtils.followSymlink( artifactPath );

            DefaultResolutionResult result = new DefaultResolutionResult( artifactPath );
            result.setNamespace( metadata.getNamespace() );
            result.setCompatVersion( compatVersion );
            if ( request.isProviderNeeded() )
                result.setProvider( rpmdb.lookupPath( artifactPath ) );

            logger.debug( "Artifact {} was resolved to {}", artifact, artifactPath );
            return result;
        }

        logger.debug( "Failed to resolve artifact: {}", artifact );
        return new DefaultResolutionResult();
    }
}

@@ -3424,33 +3424,33 @@
   if ( metadata 
-!
+=
 = null )%0A       
@@ -3456,32 +3456,161 @@
   %7B%0A            
+logger.debug( %22Failed to resolve artifact: %7B%7D%22, artifact );%0A            return new DefaultResolutionResult();%0A        %7D%0A%0A        
 properties.putAl
@@ -3644,48 +3644,8 @@
  );%0A
-        %7D%0A%0A        if ( metadata != null
 %0A   
@@ -3649,22 +3649,20 @@
         
-    &&
+if (
  !String
@@ -4299,54 +4299,8 @@
  %7D%0A%0A
-        if ( metadata != null )%0A        %7B%0A    
     
@@ -4352,28 +4352,24 @@
 etPath() );%0A
-    
         arti
@@ -4429,20 +4429,16 @@
         
- 
-   
 DefaultR
@@ -4499,36 +4499,32 @@
 artifactPath );%0A
-    
         result.s
@@ -4563,36 +4563,32 @@
 ce() );%0A        
-    
 result.setCompat
@@ -4617,28 +4617,24 @@
  );%0A        
-  
-  
 if ( request
@@ -4651,28 +4651,24 @@
 rNeeded() )%0A
-    
             
@@ -4724,36 +4724,32 @@
 h ) );%0A%0A        
- 
-   
 logger.debug( %22A
@@ -4810,28 +4810,24 @@
  );%0A        
-   
- 
 return resul
@@ -4833,133 +4833,8 @@
 lt;%0A
-        %7D%0A%0A        logger.debug( %22Failed to resolve artifact: %7B%7D%22, artifact );%0A        return new DefaultResolutionResult();%0A
     

Simplify flow in DefaultResolver after dropping depmaps