//
//  JoystickManager.cpp
//  interface/src/devices
//
//  Created by Andrzej Kapolka on 5/15/14.
//  Copyright 2014 High Fidelity, Inc.
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//

#include <QtDebug>

#ifdef HAVE_SDL
#include <SDL.h>
#undef main
#endif

#include <PerfStat.h>

#include "JoystickScriptingInterface.h"

JoystickScriptingInterface& JoystickScriptingInterface::getInstance() {
    static JoystickScriptingInterface sharedInstance;
    return sharedInstance;
}

JoystickScriptingInterface::JoystickScriptingInterface() :
    _openJoysticks(),
    _availableDeviceNames()
{
#ifdef HAVE_SDL
    SDL_Init(SDL_INIT_JOYSTICK);
    
    int joystickCount = SDL_NumJoysticks();
    
    for (int i = 0; i < joystickCount; i++) {
        _availableDeviceNames << SDL_JoystickName(i);
    }
#endif
}

JoystickScriptingInterface::~JoystickScriptingInterface() {
    qDeleteAll(_openJoysticks);
    
#ifdef HAVE_SDL
    SDL_Quit();
#endif
}

void JoystickScriptingInterface::update() {
#ifdef HAVE_SDL
    PerformanceTimer perfTimer("JoystickScriptingInterface::update");
    SDL_JoystickUpdate();
    
    foreach(Joystick* joystick, _openJoysticks) {
        joystick->update();
    }
    
#endif
}

Joystick* JoystickScriptingInterface::joystickWithName(const QString& name) {
    Joystick* matchingJoystick = _openJoysticks.value(name);
    if (!matchingJoystick) {
        // we haven't opened a joystick with this name yet - enumerate our SDL devices and see if it exists
        int joystickCount = SDL_NumJoysticks();
        
        for (int i = 0; i < joystickCount; i++) {
            if (SDL_JoystickName(i) == name) {
                matchingJoystick = _openJoysticks.insert(name, new Joystick(name, SDL_JoystickOpen(i))).value();
                break;
            }
        }
        
        qDebug() << "No matching joystick found with name" << name << "- returning NULL pointer.";
    }
    
    return matchingJoystick;
}