package mods.betterfoliage.client;

import java.io.File;
import java.io.IOException;
import java.util.Map;

import mods.betterfoliage.BetterFoliage;
import mods.betterfoliage.client.render.IRenderBlockDecorator;
import mods.betterfoliage.client.render.impl.RenderBlockBetterCactus;
import mods.betterfoliage.client.render.impl.RenderBlockBetterGrass;
import mods.betterfoliage.client.render.impl.RenderBlockBetterLeaves;
import mods.betterfoliage.client.render.impl.RenderBlockBetterLilypad;
import mods.betterfoliage.client.render.impl.RenderBlockBetterReed;
import mods.betterfoliage.client.resource.BlockTextureGenerator;
import mods.betterfoliage.client.resource.HalfTextureResource;
import mods.betterfoliage.client.resource.ILeafTextureRecognizer;
import mods.betterfoliage.client.resource.LeafTextureGenerator;
import net.minecraft.block.Block;
import net.minecraft.block.BlockCarrot;
import net.minecraft.block.BlockCrops;
import net.minecraft.block.BlockDoublePlant;
import net.minecraft.block.BlockLeavesBase;
import net.minecraft.block.BlockPotato;
import net.minecraft.block.BlockReed;
import net.minecraft.block.BlockTallGrass;
import net.minecraft.client.renderer.texture.TextureAtlasSprite;
import net.minecraft.client.resources.IResource;
import net.minecraft.init.Blocks;
import net.minecraft.util.ResourceLocation;
import net.minecraft.world.IBlockAccess;
import net.minecraftforge.common.MinecraftForge;

import com.google.common.collect.Maps;

import cpw.mods.fml.client.registry.RenderingRegistry;
import cpw.mods.fml.common.FMLCommonHandler;

public class BetterFoliageClient implements ILeafTextureRecognizer {

	public static Map<Integer, IRenderBlockDecorator> decorators = Maps.newHashMap();
	public static LeafTextureGenerator leafGenerator;
	
	public static BlockMatcher leaves;
	public static BlockMatcher crops;
	
	public static void preInit() {
		FMLCommonHandler.instance().bus().register(new KeyHandler());
		
		BetterFoliage.log.info("Registering renderers");
		registerRenderer(new RenderBlockBetterLeaves());
		registerRenderer(new RenderBlockBetterGrass());
		registerRenderer(new RenderBlockBetterCactus());
		registerRenderer(new RenderBlockBetterLilypad());
		registerRenderer(new RenderBlockBetterReed());
		
		leaves = new BlockMatcher(BlockLeavesBase.class.getName(),
								  "forestry.arboriculture.gadgets.BlockLeaves",
								  "thaumcraft.common.blocks.BlockMagicalLeaves");
		leaves.load(new File(BetterFoliage.configDir, "classesLeaves.cfg"));
		
		crops = new BlockMatcher(BlockCrops.class.getName(),
								 "-" + BlockCarrot.class.getName(),
								 "-" + BlockPotato.class.getName(),
								 BlockTallGrass.class.getName(),
								 BlockDoublePlant.class.getName(),
								 BlockReed.class.getName(),
								 "biomesoplenty.common.blocks.BlockBOPFlower",
								 "biomesoplenty.common.blocks.BlockBOPFlower2",
								 "tconstruct.blocks.slime.SlimeTallGrass");
		crops.load(new File(BetterFoliage.configDir, "classesCrops.cfg"));
		
		BetterFoliage.log.info("Registering leaf texture generator");
		leafGenerator = new LeafTextureGenerator();
		MinecraftForge.EVENT_BUS.register(leafGenerator);
		leafGenerator.recognizers.add(new BetterFoliageClient());
		
		MinecraftForge.EVENT_BUS.register(new BlockTextureGenerator("bf_reed_bottom", null) {
			@Override
			public IResource getResource(ResourceLocation var1) throws IOException {
				return new HalfTextureResource(unwrapResource(var1), true);
			}
		});
		MinecraftForge.EVENT_BUS.register(new BlockTextureGenerator("bf_reed_top", null) {
			@Override
			public IResource getResource(ResourceLocation var1) throws IOException {
				return new HalfTextureResource(unwrapResource(var1), false);
			}
		});

		MinecraftForge.EVENT_BUS.register(new BetterFoliageClient());
	}

	public boolean isLeafTexture(TextureAtlasSprite icon) {
		String resourceLocation = icon.getIconName();
		if (resourceLocation.startsWith("forestry:leaves/")) return true;
		return false;
	}
	
	public static int getRenderTypeOverride(IBlockAccess blockAccess, int x, int y, int z, Block block, int original) {
		// universal sign for DON'T RENDER ME!
		if (original == -1) return original;
		
		for (Map.Entry<Integer, IRenderBlockDecorator> entry : decorators.entrySet())
			if (entry.getValue().isBlockAccepted(blockAccess, x, y, z, block, original))
				return entry.getKey();
		
		return original;
	}
	
	public static int getGLSLBlockIdOverride(int original, Block block) {
		if (leaves.matchesID(original & 0xFFFF))
			return Block.blockRegistry.getIDForObject(Blocks.leaves) & 0xFFFF | block.getRenderType() << 16;
		if (crops.matchesID(original & 0xFFFF))
			return Block.blockRegistry.getIDForObject(Blocks.tallgrass) & 0xFFFF | block.getRenderType() << 16;
		return original;
	}
	
	public static void registerRenderer(IRenderBlockDecorator decorator) {
		int renderId = RenderingRegistry.getNextAvailableRenderId();
		decorators.put(renderId, decorator);
		RenderingRegistry.registerBlockHandler(renderId, decorator);
		MinecraftForge.EVENT_BUS.register(decorator);
		decorator.init();
	}

}