package org.apache.maven.repository.internal;

/*
 * 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.Date;
import java.util.LinkedHashMap;
import java.util.List;

import org.apache.maven.artifact.repository.metadata.Metadata;
import org.apache.maven.artifact.repository.metadata.Plugin;
import org.apache.maven.repository.internal.PluginsMetadataInfoProvider.PluginInfo;
import org.eclipse.aether.artifact.Artifact;

/**
 * Plugin G level metadata.
 */
final class PluginsMetadata
    extends MavenMetadata
{
    private final PluginInfo pluginInfo;

    PluginsMetadata( PluginInfo pluginInfo, Date timestamp )
    {
        super( createRepositoryMetadata( pluginInfo ), null, timestamp );
        this.pluginInfo = pluginInfo;
    }

    PluginsMetadata( PluginInfo pluginInfo, File file, Date timestamp )
    {
        super( createRepositoryMetadata( pluginInfo ), file, timestamp );
        this.pluginInfo = pluginInfo;
    }

    private static Metadata createRepositoryMetadata( PluginInfo pluginInfo )
    {
        Metadata result = new Metadata();
        Plugin plugin = new Plugin();
        plugin.setPrefix( pluginInfo.getPluginPrefix() );
        plugin.setArtifactId( pluginInfo.getPluginArtifactId() );
        plugin.setName( pluginInfo.getPluginName() );
        result.getPlugins().add( plugin );
        return result;
    }

    @Override
    protected void merge( Metadata recessive )
    {
        List<Plugin> recessivePlugins = recessive.getPlugins();
        List<Plugin> plugins = metadata.getPlugins();
        if ( !plugins.isEmpty() )
        {
            LinkedHashMap<String, Plugin> mergedPlugins = new LinkedHashMap<>();
            recessivePlugins.forEach( p -> mergedPlugins.put( p.getPrefix(), p ) );
            plugins.forEach( p -> mergedPlugins.put( p.getPrefix(), p ) );
            metadata.setPlugins( new ArrayList<>( mergedPlugins.values() ) );
        }
    }

    public Object getKey()
    {
        return getGroupId();
    }

    public static Object getKey( Artifact artifact )
    {
        return artifact.getGroupId();
    }

    @Override
    public MavenMetadata setFile( File file )
    {
        return new PluginsMetadata( pluginInfo, file, timestamp );
    }

    @Override
    public String getGroupId()
    {
        return pluginInfo.getPluginGroupId();
    }

    @Override
    public String getArtifactId()
    {
        return "";
    }

    @Override
    public String getVersion()
    {
        return "";
    }

    @Override
    public Nature getNature()
    {
        return Nature.RELEASE_OR_SNAPSHOT;
    }
}