package org.apache.maven.toolchain;

/*
 * 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.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.maven.toolchain.java.DefaultJavaToolChain;
import org.apache.maven.toolchain.model.ToolchainModel;
import org.codehaus.plexus.logging.Logger;
import org.codehaus.plexus.util.xml.Xpp3Dom;

/**
 *
 * @author mkleint
 * @since 2.0.9
 */
public abstract class DefaultToolchain
    implements Toolchain, ToolchainPrivate
{

    private String type;

    private Map<String, RequirementMatcher> provides = new HashMap<String, RequirementMatcher>();

    public static final String KEY_TYPE = "type"; //NOI18N

    private ToolchainModel model;

    private Logger logger;

    protected DefaultToolchain( ToolchainModel model, Logger logger )
    {
        this.model = model;

        this.logger = logger;
    }

    protected DefaultToolchain( ToolchainModel model, String type, Logger logger )
    {
        this( model, logger );
        this.type = type;
    }

    @Override
    public final String getType()
    {
        return type != null ? type : model.getType();
    }

    @Override
    public final ToolchainModel getModel()
    {
        return model;
    }

    public final void addProvideToken( String type, RequirementMatcher matcher )
    {
        provides.put( type, matcher );
    }

    @Override
    public boolean matchesRequirements( Map<String, String> requirements )
    {
        for ( Map.Entry<String, String> requirement : requirements.entrySet() )
        {
            String key = requirement.getKey();

            RequirementMatcher matcher = provides.get( key );

            if ( matcher == null )
            {
                getLog().debug( "Toolchain " + this + " is missing required property: " + key );
                return false;
            }
            if ( !matcher.matches( requirement.getValue() ) )
            {
                getLog().debug( "Toolchain " + this + " doesn't match required property: " + key );
                return false;
            }
        }
        return true;
    }

    protected Logger getLog()
    {
        return logger;
    }

    @Override
    public boolean equals( Object obj )
    {
        if ( obj == null )
        {
            return false;
        }
        
        if ( this == obj )
        {
            return true;
        }
    
        if ( !( obj instanceof DefaultToolchain ) )
        {
            return false;
        }
    
        DefaultToolchain other = (DefaultToolchain) obj;

        if ( type == null ? other.type != null : !type.equals( other.type ) )
        {
            return false;
        }

        Xpp3Dom thisProvides = (Xpp3Dom) this.getModel().getProvides();
        Xpp3Dom otherProvides = (Xpp3Dom) other.getModel().getProvides();
    
        if ( thisProvides == null ? otherProvides != null : otherProvides == null )
        {
            return false;
        }
    
        Xpp3Dom thisId = thisProvides.getChild( "id" );
        Xpp3Dom otherId = otherProvides.getChild( "id" );
        if ( ( thisId == null || "default".equals( thisId.getValue() ) )
            && ( otherId == null || "default".equals( otherId.getValue() ) ) )
        {
            return true;
        }
    
        List<String> names = new ArrayList<String>();
    
        // collect names of both provides, exclude id
        for ( Xpp3Dom thisChild : thisProvides.getChildren() )
        {
            if ( "id".equals( thisChild.getName() ) )
            {
                continue;
            }
            names.add( thisChild.getName() );
        }
    
        for ( Xpp3Dom thisChild : otherProvides.getChildren() )
        {
            if ( "id".equals( thisChild.getName() ) )
            {
                continue;
            }
            names.add( thisChild.getName() );
        }
    
        for ( String name : names )
        {
            Xpp3Dom thisChild = thisProvides.getChild( name );
            Xpp3Dom otherChild = otherProvides.getChild( name );
    
            if ( thisChild != null ? !thisChild.equals( otherChild ) : otherChild != null )
            {
                return false;
            }
        }
    
        return true;
    }

    @Override
    public int hashCode()
    {
        int hashCode = ( type == null ) ? 0 : type.hashCode();
        
        if ( this.getModel().getProvides() != null )
        {
            Xpp3Dom providesElm = (Xpp3Dom) this.getModel().getProvides();
            
            Xpp3Dom idElm = providesElm.getChild( "id" );
            
            String idValue = ( idElm == null ? "default" : idElm.getValue() );
            
            hashCode = 31 * hashCode + idValue.hashCode();
        }
        return hashCode;
    }
}

@@ -942,69 +942,8 @@
 p;%0A%0A
-import org.apache.maven.toolchain.java.DefaultJavaToolChain;%0A
 impo

remove unused import