package org.bukkit.craftbukkit.block;

import net.minecraft.tileentity.TileEntitySign;
import org.bukkit.block.Block;
import org.bukkit.block.Sign;
import org.bukkit.craftbukkit.CraftWorld;

public class CraftSign extends CraftBlockState implements Sign
{
	private final TileEntitySign sign;
	private final String[] lines;

	public CraftSign(final Block block)
	{
		super(block);

		CraftWorld world = (CraftWorld) block.getWorld();
		sign = (net.minecraft.tileentity.TileEntitySign) world.getTileEntityAt(getX(), getY(), getZ());
		// Spigot start
		if(sign == null)
		{
			lines = new String[]{"", "", "", ""};
			return;
		}
		// Spigot end
		lines = new String[sign.signText.length];
		System.arraycopy(sign.signText, 0, lines, 0, lines.length);
	}

	public String[] getLines()
	{
		return lines;
	}

	public String getLine(int index) throws IndexOutOfBoundsException
	{
		return lines[index];
	}

	public void setLine(int index, String line) throws IndexOutOfBoundsException
	{
		lines[index] = line;
	}

	@Override
	public boolean update(boolean force, boolean applyPhysics)
	{
		boolean result = super.update(force, applyPhysics);

		if(result)
		{
			sign.signText = sanitizeLines(lines);
			sign.markDirty();
		}

		return result;
	}

	public static String[] sanitizeLines(String[] lines)
	{
		String[] astring = new String[4];

		for(int i = 0; i < 4; i++)
		{
			if(i < lines.length && lines[i] != null)
			{
				String str = lines[i];
				if(str.length() > 15)
					str = str.substring(0, 15);
				astring[i] = str;
			}
			else
			{
				astring[i] = "";
			}
		}

		return astring;
	}
}