//////////////////////////////////////////////////////////////////////////////////////////
// Project description
// ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ
// Name: SDL Input 
// Description: Common SDL Input Functions
//
// Author: Falcon4ever (nJoy@falcon4ever.com, www.multigesture.net), JPeterson etc
// Copyright (C) 2003-2008 Dolphin Project.
//
//////////////////////////////////////////////////////////////////////////////////////////
//
// Licensetype: GNU General Public License (GPL)
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License 2.0 for more details.
//
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
//
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
//
//////////////////////////////////////////////////////////////////////////////////////////


//////////////////////////////////////////////////////////////////////////////////////////
// Include
// ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ
#define _SDL_MAIN_ // Avoid certain declarations in SDL.h
#include "SDL.h" // Local
#include "XInput.h"
////////////////////////////////////


namespace InputCommon
{

//////////////////////////////////////////////////////////////////////////////////////////
// Definitions
// ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ

////////////////////////////////////


//////////////////////////////////////////////////////////////////////////////////////////
// Search attached devices. Populate joyinfo for all attached physical devices.
// ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ
bool SearchDevices(std::vector<CONTROLLER_INFO> &_joyinfo, int &_NumPads, int &_NumGoodPads)
{
	// Load config
	#ifdef _DEBUG
		DEBUG_INIT();
	#endif

	/* SDL 1.3 use DirectInput instead of the old Microsoft Multimeda API, and with this we need 
	   the SDL_INIT_VIDEO flag to */
	if (!SDL_WasInit(0))
		if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK) < 0)
		{
			PanicAlert("Could not initialize SDL: %s", SDL_GetError());
			return false;
		}

	#ifdef _DEBUG
		fprintf(pFile, "Scanning for devices\n");
		fprintf(pFile, "ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ\n");
	#endif

	// Get device status
	int numjoy = SDL_NumJoysticks();
	for (int i = 0; i < numjoy; i++ )
	{
		CONTROLLER_INFO Tmp;

		Tmp.joy			= SDL_JoystickOpen(i);
		Tmp.ID			= i;
		Tmp.NumAxes		= SDL_JoystickNumAxes(Tmp.joy);
		Tmp.NumButtons	= SDL_JoystickNumButtons(Tmp.joy);
		Tmp.NumBalls	= SDL_JoystickNumBalls(Tmp.joy);
		Tmp.NumHats		= SDL_JoystickNumHats(Tmp.joy);
		Tmp.Name		= SDL_JoystickName(i);

		// Check if the device is okay
		if (   Tmp.NumAxes == 0
			&&  Tmp.NumBalls == 0
			&&  Tmp.NumButtons == 0
			&&  Tmp.NumHats == 0
			)
		{
			Tmp.Good = false;
		}
		else
		{
			_NumGoodPads++;
			Tmp.Good = true;
		}

		_joyinfo.push_back(Tmp);

		#ifdef _DEBUG
			fprintf(pFile, "ID: %d\n", i);
			fprintf(pFile, "Name: %s\n", joyinfo[i].Name);
			fprintf(pFile, "Buttons: %d\n", joyinfo[i].NumButtons);
			fprintf(pFile, "Axes: %d\n", joyinfo[i].NumAxes);
			fprintf(pFile, "Hats: %d\n", joyinfo[i].NumHats);
			fprintf(pFile, "Balls: %d\n\n", joyinfo[i].NumBalls);
		#endif

		// We have now read the values we need so we close the device
		if (SDL_JoystickOpened(i)) SDL_JoystickClose(_joyinfo[i].joy);
	}

	_NumPads = _joyinfo.size();

	return true;
}
////////////////////////////////////


//////////////////////////////////////////////////////////////////////////////////////////
// Supporting functions
// ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ

// Read current joystick status
/* ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ
	The value PadMapping[].buttons[] is the number of the assigned joypad button,
	PadState[].buttons[] is the status of the button, it becomes 0 (no pressed) or 1 (pressed) */


// Read buttons status. Called from GetJoyState().
// ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ
void ReadButton(CONTROLLER_STATE &_PadState, CONTROLLER_MAPPING _PadMapping, int button, int NumButtons)
{
	int ctl_button = _PadMapping.buttons[button];
	if (ctl_button < NumButtons)
	{
		_PadState.buttons[button] = SDL_JoystickGetButton(_PadState.joy, ctl_button);
	}
}

// Request joystick state.
// ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ
/* Called from: PAD_GetStatus()
   Input: The virtual device 0, 1, 2 or 3
   Function: Updates the PadState struct with the current pad status. The input value "controller" is
   for a virtual controller 0 to 3. */
void GetJoyState(CONTROLLER_STATE &_PadState, CONTROLLER_MAPPING _PadMapping, int controller, int NumButtons)
{
	// Update the gamepad status
	SDL_JoystickUpdate();

	// Update axis states. It doesn't hurt much if we happen to ask for nonexisting axises here.
	_PadState.axis[CTL_MAIN_X] = SDL_JoystickGetAxis(_PadState.joy, _PadMapping.axis[CTL_MAIN_X]);
	_PadState.axis[CTL_MAIN_Y] = SDL_JoystickGetAxis(_PadState.joy, _PadMapping.axis[CTL_MAIN_Y]);
	_PadState.axis[CTL_SUB_X] = SDL_JoystickGetAxis(_PadState.joy, _PadMapping.axis[CTL_SUB_X]);
	_PadState.axis[CTL_SUB_Y] = SDL_JoystickGetAxis(_PadState.joy, _PadMapping.axis[CTL_SUB_Y]);

	// Update the analog trigger axis values
#ifdef _WIN32
	if (_PadMapping.triggertype == CTL_TRIGGER_SDL)
	{
#endif
		// If we are using SDL analog triggers the buttons have to be mapped as 1000 or up, otherwise they are not used
		if(_PadMapping.buttons[CTL_L_SHOULDER] >= 1000) _PadState.axis[CTL_L_SHOULDER] = SDL_JoystickGetAxis(_PadState.joy, _PadMapping.buttons[CTL_L_SHOULDER] - 1000); else _PadState.axis[CTL_L_SHOULDER] = 0;
		if(_PadMapping.buttons[CTL_R_SHOULDER] >= 1000) _PadState.axis[CTL_R_SHOULDER] = SDL_JoystickGetAxis(_PadState.joy, _PadMapping.buttons[CTL_R_SHOULDER] - 1000); else _PadState.axis[CTL_R_SHOULDER] = 0;
#ifdef _WIN32
	}
	else
	{
		_PadState.axis[CTL_L_SHOULDER] = XInput::GetXI(0, _PadMapping.buttons[CTL_L_SHOULDER] - 1000);
		_PadState.axis[CTL_R_SHOULDER] = XInput::GetXI(0, _PadMapping.buttons[CTL_R_SHOULDER] - 1000);
	}
#endif

	// Update button states to on or off
	ReadButton(_PadState, _PadMapping, CTL_L_SHOULDER, NumButtons);
	ReadButton(_PadState, _PadMapping, CTL_R_SHOULDER, NumButtons);
	ReadButton(_PadState, _PadMapping, CTL_A_BUTTON, NumButtons);
	ReadButton(_PadState, _PadMapping, CTL_B_BUTTON, NumButtons);
	ReadButton(_PadState, _PadMapping, CTL_X_BUTTON, NumButtons);
	ReadButton(_PadState, _PadMapping, CTL_Y_BUTTON, NumButtons);
	ReadButton(_PadState, _PadMapping, CTL_Z_TRIGGER, NumButtons);
	ReadButton(_PadState, _PadMapping, CTL_START, NumButtons);

	//
	if (_PadMapping.halfpress < NumButtons)
		_PadState.halfpress = SDL_JoystickGetButton(_PadState.joy, _PadMapping.halfpress);

	// Check if we have an analog or digital joypad
	if (_PadMapping.controllertype == CTL_DPAD_HAT)
	{
		_PadState.dpad = SDL_JoystickGetHat(_PadState.joy, _PadMapping.dpad);
	}
	else
	{
		/* Only do this if the assigned button is in range (to allow for the current way of saving keyboard
		   keys in the same array) */
		if(_PadMapping.dpad2[CTL_D_PAD_UP] <= NumButtons)
			_PadState.dpad2[CTL_D_PAD_UP] = SDL_JoystickGetButton(_PadState.joy, _PadMapping.dpad2[CTL_D_PAD_UP]);
		if(_PadMapping.dpad2[CTL_D_PAD_DOWN] <= NumButtons)
			_PadState.dpad2[CTL_D_PAD_DOWN] = SDL_JoystickGetButton(_PadState.joy, _PadMapping.dpad2[CTL_D_PAD_DOWN]);
		if(_PadMapping.dpad2[CTL_D_PAD_LEFT] <= NumButtons)
			_PadState.dpad2[CTL_D_PAD_LEFT] = SDL_JoystickGetButton(_PadState.joy, _PadMapping.dpad2[CTL_D_PAD_LEFT]);
		if(_PadMapping.dpad2[CTL_D_PAD_RIGHT] <= NumButtons)
			_PadState.dpad2[CTL_D_PAD_RIGHT] = SDL_JoystickGetButton(_PadState.joy, _PadMapping.dpad2[CTL_D_PAD_RIGHT]);
	}

	/* Debugging 
	Console::ClearScreen();
	Console::Print(
		"Controller and handle: %i %i\n"

		"Triggers:%i  %i %i  %i %i  |  HalfPress: %i Mapping: %i\n",

		controller, (int)_PadState.joy,

		_PadMapping.triggertype,
		_PadMapping.buttons[CTL_L_SHOULDER], _PadMapping.buttons[CTL_R_SHOULDER],
		_PadState.axis[CTL_L_SHOULDER], _PadState.axis[CTL_R_SHOULDER],

		_PadState.halfpress, _PadMapping.halfpress
		);	*/
}
//////////////////////////////////////////////////////////////////////////////////////////



} // InputCommon