package dk.thoerup.bukkit.hoeruputils;

import java.util.HashSet;
import java.util.Set;
import java.util.Random;

import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.block.BlockDamageEvent;
import org.bukkit.event.block.BlockListener;
import org.bukkit.event.player.PlayerListener;
import org.bukkit.event.player.PlayerQuitEvent;
import org.bukkit.inventory.ItemStack;

public class PowerMiner extends BlockListener implements CommandExecutor {
	
	
	Random rand = new Random(); 
	
	Set<String> miners = new HashSet<String>(); 

	@Override
	public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
		if (!sender.isOp()) {
			sender.sendMessage("Only ops can use powerminer");
			return false;
		}
			
		if (! (sender instanceof Player) ) {
			sender.sendMessage("Only in-game players can use powerminer");
			return false;
		}
			
		
		Player p  = (Player) sender;
		if (miners.contains(p.getName())) {
			miners.remove( p.getName() );
			p.sendMessage("PowerMiner disabled");
		} else {
			miners.add( p.getName() );
			p.sendMessage("PowerMiner enabled - go dig some tunnels (with a feather)");
		}
		
		
		return true;
	}

	
	protected ItemStack getDropItems(Block b) {
		switch (b.getTypeId()) {
		case 1: //stone drops cobblestone
			return new ItemStack(4,1);
		case 2:
		case 3:			
			return null; //instabreak already drops dirt
		case 12:
			return null; //instabreak drops sand
		case 13:
			return null; //don't drop gravel		
		case 16: //coal ore drops coal			
			return new ItemStack(263,1);
		case 17:
			return null; //instabreak drops wood
		case 18:
			return (rand.nextInt(16) == 0) ? new ItemStack(6,1,(short)0, b.getData() ) : null;  //leaves has 6.25% chance of dropping sapplings 
		case 21: //lapis lazuli
			int count = rand.nextInt(5) + 4;
			return new ItemStack(351,count,(short)0, (byte)4);
		case 27:
		case 28:
			return null; //instabreak drops powered and detector rails
		case 54:
			return null; //instabreak drops chests
		case 56: //diamond ore drops diamond
			return new ItemStack(264,1);
		case 58:
			return null; //instabreak drops craft tables
		case 64: //instabreak drops wooden doors
		case 66:
			return null; //instabreak drops rails
		case 71: //instabreak drops iron doors
			return null;
		case 73:
		case 74:
			return new ItemStack(331,4); //redstone ore (both glowing and non-glowing) drops 4 redstone
		case 82:
			return null; //instabreak drops clay from clayblock
		case 88:
			return null; //instabreak drops soul sand
		default:
			return new ItemStack(b.getTypeId(), 1,(short)0, b.getData()); 
		}
	}
	
	public void onBlockDamage(BlockDamageEvent event) {
		Player p = event.getPlayer();
		
		if (! p.isOp() ) 
			return;
		
		if (p.getItemInHand().getType() == Material.FEATHER) {
			if ( miners.contains(p.getName()) ) {			
				
				Block b = event.getBlock();
				
				if (b.getTypeId() == 7) //don't remove bedrock
					return;
				if (b.getTypeId() == 90) //don't break portal
					return;
				
				event.setInstaBreak(true);
				

				ItemStack items = getDropItems(b);
				
				
				if (items != null) {				
					b.getWorld().dropItemNaturally(b.getLocation(), items);
				}
				
			}
		}
		
	}
	public PlayerQuitListener getPlayerQuitListener() {
		return new PlayerQuitListener();
	}
	
	
	public class PlayerQuitListener extends PlayerListener {
		@Override
		public void onPlayerQuit(PlayerQuitEvent event) {
			Player p = event.getPlayer();
			
			if (miners.contains(p.getName())) {
				miners.remove( p.getName() );
			}
		}
	}

}