package gregtech.common;

import gregtech.GT_Mod;
import gregtech.api.objects.XSTR;
import gregtech.api.util.GT_Utility;
import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.entity.EntityLiving;
import net.minecraft.init.Blocks;
import net.minecraft.potion.Potion;
import net.minecraft.potion.PotionEffect;
import net.minecraft.util.AxisAlignedBB;
import net.minecraft.world.ChunkPosition;
import net.minecraft.world.World;
import net.minecraftforge.common.DimensionManager;

import java.util.ArrayList;
import java.util.List;

public class GT_Pollution {
	

	static List<ChunkPosition> tList = null;
	static int loops = 1;
	static XSTR tRan = new XSTR();

	public static void onWorldTick(World aWorld, int aTick){
		if(!GT_Mod.gregtechproxy.mPollution)return;
		if(aTick == 0 || (tList==null && GT_Proxy.chunkData!=null)){
			tList = new ArrayList<ChunkPosition>(GT_Proxy.chunkData.keySet());
			loops = (tList.size()/1200) + 1;
//			System.out.println("new Pollution loop"+aTick);
		}
		if(tList!=null && tList.size() > 0){
			int i = 0;
			for(; i < loops ; i++){
				if(tList.size()>0){
				ChunkPosition tPos = tList.get(0);
				tList.remove(0);
				if(tPos!=null && GT_Proxy.chunkData.containsKey(tPos)){
				int tPollution = GT_Proxy.chunkData.get(tPos)[1];
//				System.out.println("process: "+tPos.chunkPosX+" "+tPos.chunkPosZ+" "+tPollution);
				//Reduce pollution in chunk
				tPollution = (int)(0.99f*tPollution);
				tPollution -= 2000;
				if(tPollution<=0){tPollution = 0;}else{
				//Spread Pollution
				if(tPollution>50000){
				List<ChunkPosition> tNeighbor = new ArrayList();
				tNeighbor.add(new ChunkPosition(tPos.chunkPosX+1, 1, tPos.chunkPosZ));
				tNeighbor.add(new ChunkPosition(tPos.chunkPosX-1, 1, tPos.chunkPosZ));
				tNeighbor.add(new ChunkPosition(tPos.chunkPosX, 1, tPos.chunkPosZ+1));
				tNeighbor.add(new ChunkPosition(tPos.chunkPosX, 1, tPos.chunkPosZ-1));
				for(ChunkPosition tNPos : tNeighbor){
					if(GT_Proxy.chunkData.containsKey(tNPos)){
						int tNPol = GT_Proxy.chunkData.get(tNPos)[1];
						if(tNPol<tPollution && tNPol*120 < tPollution*100){
							int tDiff = tPollution - tNPol;
							tDiff = tDiff/10;
							tNPol += tDiff;
							tPollution -= tDiff;
							GT_Proxy.chunkData.get(tNPos)[1] = tNPol;
						}
					}else{
						GT_Utility.getUndergroundOil(aWorld,tPos.chunkPosX*16,tPos.chunkPosZ*16);
					}
				}}
				int[] tArray = GT_Proxy.chunkData.get(tPos);
				tArray[1] = tPollution;
				GT_Proxy.chunkData.remove(tPos);
				GT_Proxy.chunkData.put(tPos, tArray);
				//Create Pollution effects
//				Smog filter TODO
				if(tPollution > GT_Mod.gregtechproxy.mPollutionSmogLimit){
				
//				Poison effects
				if(tPollution > GT_Mod.gregtechproxy.mPollutionPoisonLimit){
				AxisAlignedBB chunk = AxisAlignedBB.getBoundingBox(tPos.chunkPosX*16, 0, tPos.chunkPosZ*16, tPos.chunkPosX*16+16, 256, tPos.chunkPosZ*16+16);
				List<EntityLiving> tEntitys = aWorld.getEntitiesWithinAABB(EntityLiving.class, chunk);
				for(EntityLiving tEnt : tEntitys){
				if(tRan.nextInt(tPollution/25000) > 20){
					tEnt.addPotionEffect(new PotionEffect(Potion.poison.id, tPollution/25000, 1));
				}
				}
//				killing plants
				if(tPollution > GT_Mod.gregtechproxy.mPollutionVegetationLimit){
				int f = 20;
				for(;f<(tPollution/25000);f++){
					int x =tPos.chunkPosX*16+(tRan.nextInt(16));;
					int y =60 +(-f+tRan.nextInt(f*2+1));
					int z =tPos.chunkPosZ*16+(tRan.nextInt(16));
					damageBlock(x, y, z, tPollution > GT_Mod.gregtechproxy.mPollutionSourRainLimit);
				}}}}
					}
				}
			}
			}}
	}
	
	public static void damageBlock(int x, int y, int z, boolean sourRain){
		World world = DimensionManager.getWorld(0);
		if (world.isRemote)	return;
		Block tBlock = world.getBlock(x, y, z);
		int tMeta = world.getBlockMetadata(x, y, z);
		if (tBlock == Blocks.air || tBlock == Blocks.stone || tBlock == Blocks.sand|| tBlock == Blocks.deadbush)return;
		
			if (tBlock == Blocks.leaves || tBlock == Blocks.leaves2 || tBlock.getMaterial() == Material.leaves)
				world.setBlockToAir(x, y, z);
			if (tBlock == Blocks.reeds) {
				tBlock.dropBlockAsItem(world, x, y, z, tMeta, 0);
				world.setBlockToAir(x, y, z);
			}
			if (tBlock == Blocks.tallgrass)
				world.setBlock(x, y, z, Blocks.deadbush);
			if (tBlock == Blocks.vine) {
				tBlock.dropBlockAsItem(world, x, y, z, tMeta, 0);
				world.setBlockToAir(x, y, z);
			}
			if (tBlock == Blocks.waterlily || tBlock == Blocks.wheat || tBlock == Blocks.cactus || 
				tBlock.getMaterial() == Material.cactus || tBlock == Blocks.melon_block || tBlock == Blocks.melon_stem) {
				tBlock.dropBlockAsItem(world, x, y, z, tMeta, 0);
				world.setBlockToAir(x, y, z);
			}
			if (tBlock == Blocks.red_flower || tBlock == Blocks.yellow_flower || tBlock == Blocks.carrots || 
				tBlock == Blocks.potatoes || tBlock == Blocks.pumpkin || tBlock == Blocks.pumpkin_stem) {
				tBlock.dropBlockAsItem(world, x, y, z, tMeta, 0);
				world.setBlockToAir(x, y, z);
			}
			if (tBlock == Blocks.sapling || tBlock.getMaterial() == Material.plants)
				world.setBlock(x, y, z, Blocks.deadbush);
			if (tBlock == Blocks.cocoa) {
				tBlock.dropBlockAsItem(world, x, y, z, tMeta, 0);
				world.setBlockToAir(x, y, z);
			}
			if (tBlock == Blocks.mossy_cobblestone)
				world.setBlock(x, y, z, Blocks.cobblestone);
			if (tBlock == Blocks.grass || tBlock.getMaterial() == Material.grass )
				world.setBlock(x, y, z, Blocks.dirt);	
			if(tBlock == Blocks.farmland || tBlock == Blocks.dirt){
				world.setBlock(x, y, z, Blocks.sand);					
			}
			
			if(sourRain && world.isRaining() && (tBlock == Blocks.stone || tBlock == Blocks.gravel || tBlock == Blocks.cobblestone) && 
				world.getBlock(x, y+1, z) == Blocks.air && world.canBlockSeeTheSky(x, y, z)){
				if(tBlock == Blocks.stone){world.setBlock(x, y, z, Blocks.cobblestone);	}
				else if(tBlock == Blocks.cobblestone){world.setBlock(x, y, z, Blocks.gravel);	}
				else if(tBlock == Blocks.gravel){world.setBlock(x, y, z, Blocks.sand);	}
			}
	}
	
	public static void addPollution(ChunkPosition aPos, int aPollution){
		if(!GT_Mod.gregtechproxy.mPollution)return;
		try{
		ChunkPosition tPos = new ChunkPosition(aPos.chunkPosX/16, 1, aPos.chunkPosZ/16);
//		System.out.println("add pollution x: "+ tPos.chunkPosX +" z: " + tPos.chunkPosZ +" poll: "+aPollution);
		int[] tData = new int[2];
		if(GT_Proxy.chunkData.containsKey(tPos)){
			tData = GT_Proxy.chunkData.get(tPos);
			if(tData.length>1){
				tData[1] += aPollution;
			}
		}else{
			tData[1] += aPollution;
			GT_Proxy.chunkData.put(tPos, tData);
		}
		}catch(Exception e){
			
		}
	}
}