package com.jotuntech.sketcher.client.command;

import java.nio.ByteBuffer;

import com.jotuntech.sketcher.client.Client;
import com.jotuntech.sketcher.client.Command;
import com.jotuntech.sketcher.client.Connection;
import com.jotuntech.sketcher.client.Editor;
import com.jotuntech.sketcher.common.Brush;
import com.jotuntech.sketcher.common.User;

public class SetBrushCommand implements Command {
	Brush brush;

	public SetBrushCommand() {

	}

	public SetBrushCommand(Brush brush) {
		this.brush = brush;
	}

	public int perform(Client client, User user) {
		if(user == null) {
			/** Signed in users only */
			return Connection.SEND_NONE;
		}

		if(user.isViewer()) {
			return Connection.SEND_NONE;
		}

		Brush oldBrush = user.getBrush();
		user.setBrush(brush);

		if(user == client.getConnection().getUser()) {
			/** Update the GUI */
			client.getUserInterface().updateBrushSliders();
			
			if(oldBrush == null) {
				/* Enable editor when first brush is selected */
				client.getUserInterface().getEditor().setState(Editor.State.DRAW_HOVER);
			}
		}

		return Connection.SEND_OTHERS;
	}

	public void decode(ByteBuffer in) {
		brush = new Brush();
		brush.decode(in);
	}

	public void encode(ByteBuffer out) {
		brush.encode(out);
	}
}