package net.CaveBiomes.main;

import java.lang.reflect.Field;

import com.google.common.base.Throwables;
import com.google.common.collect.ObjectArrays;

import net.CaveBiomes.biomes.DesertCave;
import net.CaveBiomes.items.GlowShroom;
import net.minecraft.item.Item;
import net.minecraft.world.biome.BiomeGenBase;
import net.minecraft.world.gen.layer.CaveBiomesGenLayerAccessor;
import net.minecraft.world.gen.layer.GenLayer;
import net.minecraft.world.gen.layer.GenLayerBiome;
import net.minecraft.world.gen.layer.GenLayerRiverMix;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.event.terraingen.WorldTypeEvent;
import cpw.mods.fml.common.Mod;
import cpw.mods.fml.common.Mod.EventHandler;
import cpw.mods.fml.common.event.FMLInitializationEvent;
import cpw.mods.fml.common.event.FMLPostInitializationEvent;
import cpw.mods.fml.common.event.FMLPreInitializationEvent;
import cpw.mods.fml.common.eventhandler.SubscribeEvent;
import cpw.mods.fml.common.registry.GameRegistry;
import cpw.mods.fml.common.registry.LanguageRegistry;
import net.minecraftforge.event.terraingen.WorldTypeEvent;

@Mod(modid = CaveBiomes.modid, version = CaveBiomes.version)

public class CaveBiomes<itemGlowShroom> {

	public static final String modid = "CaveBiomes";
	public static final String version = "1.7.2";

	//Items
	public static Item itemGlowShroom;
	//biomes
	public static BiomeGenBase DesertCave = new DesertCave(34).setBiomeName("DesertCave");


	@EventHandler
	public void Init(FMLInitializationEvent preEvent){

	//Item Registry
		itemGlowShroom = new GlowShroom().setUnlocalizedName("GlowShroom");
		GameRegistry.registerItem(itemGlowShroom, "Glow Shroom");
		LanguageRegistry.addName(itemGlowShroom, "Glow Shroom");


		//Biome Registry

	;


	}

	@EventHandler
	public void PreInit(FMLPreInitializationEvent event){
		MinecraftForge.TERRAIN_GEN_BUS.register(this);

		DesertCave = new BiomeGenBase(233) {

		};

	}

	public static Field biomePatternGeneratorChainfield;
	public static Field biomeArrayField;

	static{

		try {
			biomePatternGeneratorChainfield = GenLayerRiverMix.class.getDeclaredField("field_151622_e");
			biomePatternGeneratorChainfield.setAccessible(true);


			biomeArrayField = GenLayerBiome.class.getDeclaredField("field_151622_e");
			biomeArrayField.setAccessible(true);
		} catch (NoSuchFieldException e) {
		  Throwables.propagate(e);
		}
	}

	@SubscribeEvent
	public void onGenLayerInit(WorldTypeEvent.InitBiomeGens event) throws IllegalAccessException {
		GenLayer biomeLayer = event.originalBiomeGens[1];

		do{

				if (biomeLayer instanceof GenLayerRiverMix) {
						biomeLayer = (GenLayer) biomePatternGeneratorChainfield.get(biomeLayer);
				} else {
					biomeLayer = CaveBiomesGenLayerAccessor.getParent(biomeLayer);

				}


		} while (biomeLayer != null && !(biomeLayer instanceof GenLayerBiome));
		if (biomeLayer == null) {
			throw new IllegalStateException("couldn't locate GenLayerbiome!");
		}

		BiomeGenBase[] biomes = (BiomeGenBase[]) biomeArrayField.get(biomeLayer);
		biomes = ObjectArrays.concat(biomes,  DesertCave);
		biomeArrayField.set(biomeLayer, biomes);
	}

	@EventHandler
	public void postInit(FMLPostInitializationEvent postEvent){

	}

}