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Entity Module
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/*
 * Copyright 2014 the original author or authors
 *
 * 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 com.foreach.across.modules.entity.registry;

import com.foreach.across.core.annotations.RefreshableCollection;
import com.foreach.across.modules.entity.EntityModule;
import com.foreach.across.modules.entity.registry.properties.EntityPropertyRegistryProvider;
import com.foreach.across.modules.entity.support.EntityMessageCodeResolver;
import lombok.NonNull;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.MessageSource;
import org.springframework.stereotype.Service;

import java.util.Collection;
import java.util.Collections;
import java.util.function.Consumer;

/**
 * Default factory for creating a new {@link MutableEntityConfiguration} that allows a number of
 * {@link PostProcessor} beans to be defined.  These will be run in order and applied to any newly
 * created configuration, before it is returned.
 *
 * @author Arne Vandamme
 * @since 2.0.0
 */
@Service
public class DefaultEntityConfigurationProvider implements EntityConfigurationProvider
{
	/**
	 * PostProcessor interface for a single configuration.
	 */
	@FunctionalInterface
	public interface PostProcessor extends Consumer>
	{
	}

	private Collection postProcessors = Collections.emptyList();

	@RefreshableCollection(includeModuleInternals = true, incremental = true)
	public void setPostProcessors( Collection postProcessors ) {
		this.postProcessors = postProcessors;
	}

	private final MessageSource messageSource;
	private final EntityPropertyRegistryProvider propertyRegistryProvider;

	@Autowired
	public DefaultEntityConfigurationProvider( MessageSource messageSource,
	                                           EntityPropertyRegistryProvider propertyRegistryProvider ) {
		this.messageSource = messageSource;
		this.propertyRegistryProvider = propertyRegistryProvider;
	}

	@Override
	public  MutableEntityConfiguration create( @NonNull Class entityType ) {
		MutableEntityConfiguration configuration = new EntityConfigurationImpl<>( entityType );
		configuration.setHidden( true );
		configuration.setEntityMessageCodeResolver( createMessageCodeResolver( configuration ) );
		configuration.setPropertyRegistry( propertyRegistryProvider.get( entityType ) );
		postProcessors.forEach( p -> p.accept( configuration ) );

		return configuration;
	}

	@Override
	public  MutableEntityConfiguration create( @NonNull String name,
	                                                 @NonNull Class entityType,
	                                                 boolean registerForClass ) {
		MutableEntityConfiguration configuration = new EntityConfigurationImpl<>( name, entityType );
		configuration.setHidden( true );
		configuration.setEntityMessageCodeResolver( createMessageCodeResolver( configuration ) );
		configuration.setPropertyRegistry(
				registerForClass
						? propertyRegistryProvider.get( entityType )
						: propertyRegistryProvider.create( entityType )
		);
		postProcessors.forEach( p -> p.accept( configuration ) );

		return configuration;
	}

	private EntityMessageCodeResolver createMessageCodeResolver( MutableEntityConfiguration configuration ) {
		EntityMessageCodeResolver messageCodeResolver = new EntityMessageCodeResolver();
		messageCodeResolver.setEntityConfiguration( configuration );
		messageCodeResolver.setMessageSource( messageSource );
		messageCodeResolver.setPrefixes( "entities." + configuration.getName() );
		messageCodeResolver.setFallbackCollections( EntityModule.NAME + ".entities", "" );
		return messageCodeResolver;
	}
}