// Logitech Gaming SDK
//
// Copyright (C) 2011-2014 Logitech. All rights reserved.
// Author: Tiziano Pigliucci
// Email: devtechsupport@logitech.com

using UnityEngine;
using System.Collections;
using System.Runtime.InteropServices;
using System;



public class LogitechGKey : MonoBehaviour 
{
        public bool usingCallback;
        static private String lastKeyPress = "";
        private String descriptionLabel = "";
        // Use this for initialization
        void Start () {
                descriptionLabel = "Last g-key event : ";
                lastKeyPress = "No g-key event";
                //Value used to show the two different ways to implement g-keys support in your game
                //change it to false to try the non-callback version
                if (usingCallback){
                        LogitechGSDK.logiGKeyCbContext cbContext;
                        LogitechGSDK.logiGkeyCB cbInstance = new LogitechGSDK.logiGkeyCB(this.GkeySDKCallback);
                        cbContext.gkeyCallBack = cbInstance;
                        cbContext.gkeyContext = IntPtr.Zero;
                        LogitechGSDK.LogiGkeyInit(ref cbContext);
                }
                else {
                        LogitechGSDK.LogiGkeyInitWithoutCallback();
                }
        }
        
        // Update is called once per frame
        void Update(){
                if(!usingCallback){
                        for (int index = 6; index <= LogitechGSDK.LOGITECH_MAX_MOUSE_BUTTONS; index++) {
                                if (LogitechGSDK.LogiGkeyIsMouseButtonPressed(index) == 1) {
                                        lastKeyPress = "MOUSE DOWN Button : "+index;
                                } 
                        } 

                        for (int index = 1; index <= LogitechGSDK.LOGITECH_MAX_GKEYS; index++) { 
                                for (int mKeyIndex = 1; mKeyIndex <= LogitechGSDK.LOGITECH_MAX_M_STATES; mKeyIndex++) {
                                        if (LogitechGSDK.LogiGkeyIsKeyboardGkeyPressed(index, mKeyIndex) == 1) {
                                                lastKeyPress = "KEYBOARD/HEADSET DOWN Button : "+index;
                                        } 
                                }
                        }
                }
        }
        
        void GkeySDKCallback(LogitechGSDK.GkeyCode gKeyCode, String gKeyOrButtonString, IntPtr context){ 
                if(gKeyCode.keyDown == 0){
                        if(gKeyCode.mouse == 1){
                                lastKeyPress = "MOUSE UP"+gKeyOrButtonString;
                        }
                        else{
                                lastKeyPress = "KEYBOARD/HEADSET RELEASED "+gKeyOrButtonString;
                        }
                }
                else{
                        if(gKeyCode.mouse == 1){
                                lastKeyPress = "MOUSE DOWN "+gKeyOrButtonString;
                        }
                        else{ 
                                lastKeyPress = "KEYBOARD/HEADSET PRESSED "+gKeyOrButtonString;
                        }
                }
                
        }
        
        void OnGUI()
        {
                GUI.Label(new Rect(10, 450, 200, 50), descriptionLabel+""+lastKeyPress);
        }
        
        void OnDestroy () {
                //Free G-Keys SDKs before quitting the game
                LogitechGSDK.LogiGkeyShutdown();
        }
}