package dk.thoerup.bukkit.hoeruputils.secretdoor;

import java.util.Map;

import org.bukkit.Location;
import org.bukkit.Server;
import org.bukkit.World;
import org.bukkit.block.Block;


class Door {
	final static int EAST = 0;
	final static int WEST = 1;
	final static int NORTH = 2;
	final static int SOUTH = 3;
	
	Location leftUpper;

	
	Location blocks[][]; // [width][height] - [0][0] == leftUpper

	int material;
	
	int direction;
	
	int width;
	int height;
	

	public Door(Block sign, int width, int height, DoorStorage store) throws ConflictingDoorException{
		leftUpper = sign.getLocation().clone();
		
		this.width = width;
		this.height = height;
		
		blocks = new Location[width][height];		

		direction = sign.getData() - 2;
		
		switch ( sign.getData() ) {
		case 2: //facing east
			leftUpper.setZ( leftUpper.getZ() + 1 ); 
			break;	
		case 3: //facing west
			leftUpper.setZ( leftUpper.getZ() - 1 );
			break;
		case 4: //facing north
			leftUpper.setX( leftUpper.getX() + 1);
			break;
		case 5: //facing south
			leftUpper.setX( leftUpper.getX() - 1);
			break;
		}

		
		
		material = leftUpper.getBlock().getTypeId();
		
		loadBlocks();
		
		
		for (int w=0; w<width; w++) {
			for (int h=0; h<height; h++) {
				Door d = store.findDoor( blocks[w][h] );
				if (d != null) {
					throw new ConflictingDoorException();
				}
			}
		}

	}

	public Door(String input, Server server) {
		String parts[] = input.split(":");

		World w = server.getWorld( parts[0] );

		leftUpper  = new Location(w, Integer.parseInt(parts[1]),  Integer.parseInt(parts[2]),  Integer.parseInt(parts[3]) );
		direction = Integer.parseInt( parts[4] );
		material = Integer.parseInt( parts[5] );
		
		width = Integer.parseInt( parts[6] );
		height = Integer.parseInt( parts[7] );
		
		loadBlocks();
	}
	
	private void loadBlocks() {
		
		for (int w=0; w<width; w++) {
			for (int h=0; h<height; h++) {
				int x = leftUpper.getBlockX();
				int y = leftUpper.getBlockY();
				int z = leftUpper.getBlockZ();
				switch(direction) {
				case EAST:
					x -= w;
					break;
				case WEST:
					x += w;
					break;					
				case NORTH:
					z += w;
					break;
				case SOUTH:
					z -= w;
					break;
				default:
					System.out.println("[SecretDoor] this should never happen");				
				}
				y -= h;
				
				//System.out.println("Add block: " + x + ":" + y + ":" + z);
				
				blocks[w][h] = new Location( leftUpper.getWorld(), x, y, z);
				
			}
		}
		
	}

	public String toCsv() {
		StringBuilder sb = new StringBuilder();
		sb.append( leftUpper.getWorld().getName() );

		sb.append( ":" + leftUpper.getBlockX() );
		sb.append( ":" + leftUpper.getBlockY() );
		sb.append( ":" + leftUpper.getBlockZ() );
		
		sb.append( ":" + direction );

		sb.append( ":" + material );
		
		sb.append( ":" + width );
		sb.append( ":" + height );

		return sb.toString();
	}


	public void registerMap(Map<Location,Door> map) {
		for (int w=0; w<width; w++) {
			for (int h=0; h<height; h++) {
				map.put(blocks[w][h], this);
			}
		}
	}

	public void unregisterMap(Map<Location,Door> map) {
		for (int w=0; w<width; w++) {
			for (int h=0; h<height; h++) {
				map.remove( blocks[w][h] );
			}
		}

	}

	public void open(World world) {
		for (int w=0; w<width; w++) {
			for (int h=0; h<height; h++) {				
				blocks[w][h].getBlock().setTypeId(0);
			}
		}

	}

	public void close(World world) {
		for (int w=0; w<width; w++) {
			for (int h=0; h<height; h++) {				
				blocks[w][h].getBlock().setTypeId( material );
			}
		}
	}

}