/*
 * Copyright (c) 2014 tabletoptool.com team.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/gpl.html
 * 
 * Contributors:
 *     rptools.com team - initial implementation
 *     tabletoptool.com team - further development
 */
package com.t3.client.ui;

import java.util.HashMap;
import java.util.Map;

import javax.swing.KeyStroke;

import com.t3.client.TabletopTool;
import com.t3.client.ui.macrobuttons.buttons.MacroButton;

/**
 * @author tylere
 */
public class MacroButtonHotKeyManager {

	
	//Changing and adding more hotkeys should work smoothly, however hotkeys[0]
	//should be kept as the "no hotkey" option, regardless of the actual String used for it.
	//HOTKEYS strings must follow the syntax required by getKeyStroke(String s)
	public static final String[] HOTKEYS = { "None", "F2", "F3", "F4", "F5", "F6", "F7", "F8",
		"F9", "F10", "F11", "F12", "alt F1", "alt F2", "alt F3", "alt F5", "alt F6",
		"alt F7", "alt F8", "alt F9", "alt F10", "alt F11", "alt F12", "ctrl F1", "ctrl F2",
		"ctrl F3", "ctrl F4", "ctrl F5", "ctrl F6", "ctrl F7", "ctrl F8", "ctrl F9",
		"ctrl F10", "ctrl F11", "ctrl F12", "shift F1", "shift F2", "shift F3", "shift F4",
		"shift F5", "shift F6", "shift F7", "shift F8", "shift F9", "shift F10",
		"shift F11", "shift F12"};
	
	// our own map is required to allow us to search which button has an associated keystroke
	private static Map<KeyStroke, MacroButton> buttonsByKeyStroke = new HashMap<KeyStroke, MacroButton>();
	private MacroButton macroButton;

	public MacroButtonHotKeyManager(MacroButton macroButton) {
		this.macroButton = macroButton;
	}

	public void assignKeyStroke(String hotKey) {
		
		// remove the old keystroke from our map
		KeyStroke oldKeystroke = KeyStroke.getKeyStroke(macroButton.getProperties().getHotKey());
		buttonsByKeyStroke.remove(oldKeystroke);	
		// assign the new hotKey
		macroButton.getProperties().setHotKey(hotKey);
		
		// HOTKEYS[0] is no hotkey.
		if( !hotKey.equals(HOTKEYS[0])) {
			
			KeyStroke keystroke = KeyStroke.getKeyStroke(hotKey);
			
			// Check what button the hotkey is already assigned to
			MacroButton oldButton = buttonsByKeyStroke.get(keystroke);
			
			// if it is already assigned, then update the old mapped button
			if (oldButton != macroButton && oldButton != null) {
				
				// tell the old button properties it no longer has a hotkey
				oldButton.getProperties().setHotKey(HOTKEYS[0]);
				// remove the hot key reference from the button's text
				oldButton.setText(oldButton.getButtonText());	
				//remove from our map
				buttonsByKeyStroke.remove(keystroke);
				// need to save settings
				oldButton.getProperties().save();
			}
			
			// Add the new button and keystroke to our map
			buttonsByKeyStroke.put(keystroke, macroButton);
			
			// keep macrotabbedpane's keystrokes in sync
			if (TabletopTool.getFrame() != null) {
				//TabletopTool.getFrame().getMacroTabbedPane().updateKeyStrokes();
				// TODO: change this later to use the hub
				TabletopTool.getFrame().updateKeyStrokes();
			}
		
		}
	}	
	
	public static Map<KeyStroke, MacroButton> getKeyStrokeMap() {
		return buttonsByKeyStroke;
	}
	
	// when the user loads a campaign the saved macro keystrokes should be restored
	// and the possible conflicts with the global macro keystrokes should be resolved.
	public static void clearKeyStrokes() {
		buttonsByKeyStroke.clear();
	}
}