/*
 * This file is part of Applied Energistics 2.
 * Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved.
 *
 * Applied Energistics 2 is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Applied Energistics 2 is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Applied Energistics 2.  If not, see <http://www.gnu.org/licenses/lgpl>.
 */

package appeng.bootstrap.components;


import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.function.BiFunction;

import com.google.common.collect.Sets;

import net.minecraft.client.renderer.block.model.IBakedModel;
import net.minecraft.client.renderer.block.model.ModelResourceLocation;
import net.minecraft.util.registry.IRegistry;
import net.minecraftforge.client.event.ModelBakeEvent;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
import net.minecraftforge.fml.relauncher.Side;

import appeng.core.AppEng;


public class ModelOverrideComponent implements PreInitComponent
{

	private static final ModelResourceLocation MODEL_MISSING = new ModelResourceLocation( "builtin/missing", "missing" );

	// Maps from resource path to customizer
	private final Map<String, BiFunction<ModelResourceLocation, IBakedModel, IBakedModel>> customizer = new HashMap<>();

	public void addOverride( String resourcePath, BiFunction<ModelResourceLocation, IBakedModel, IBakedModel> customizer )
	{
		this.customizer.put( resourcePath, customizer );
	}

	@Override
	public void preInitialize( Side side )
	{
		MinecraftForge.EVENT_BUS.register( this );
	}

	@SubscribeEvent
	public void onModelBakeEvent( final ModelBakeEvent event )
	{
		IRegistry<ModelResourceLocation, IBakedModel> modelRegistry = event.getModelRegistry();
		Set<ModelResourceLocation> keys = Sets.newHashSet( modelRegistry.getKeys() );
		IBakedModel missingModel = modelRegistry.getObject( MODEL_MISSING );

		for( ModelResourceLocation location : keys )
		{
			if( !location.getResourceDomain().equals( AppEng.MOD_ID ) )
			{
				continue;
			}

			IBakedModel orgModel = modelRegistry.getObject( location );

			// Don't customize the missing model. This causes Forge to swallow exceptions
			if( orgModel == missingModel )
			{
				continue;
			}

			BiFunction<ModelResourceLocation, IBakedModel, IBakedModel> customizer = this.customizer.get( location.getResourcePath() );
			if( customizer != null )
			{
				IBakedModel newModel = customizer.apply( location, orgModel );

				if( newModel != orgModel )
				{
					modelRegistry.putObject( location, newModel );
				}
			}
		}
	}
}