/*

 * Hedgewars, a free turn based strategy game

 * Copyright (c) 2007 Andrey Korotaev <unC0Rr@gmail.com>

 *

 * 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 of the License

 *

 * 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 for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA

 */

#include "SDLs.h"

#include "SDL.h"

#include "SDL_mixer.h"

#include "hwconsts.h"

#include <QApplication>

extern char sdlkeys[1024][2][128];

extern char xb360buttons[][128];

extern char xb360dpad[128];

extern char xbox360axes[][128];

SDLInteraction::SDLInteraction()

{

	SDL_Init(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK);

	musicInitialized = 0;

	music = NULL;

	if(SDL_NumJoysticks())

		addGameControllerKeys();

	SDL_QuitSubSystem(SDL_INIT_JOYSTICK);

}

SDLInteraction::~SDLInteraction()

{

	if (musicInitialized == 1) {

		if (music != NULL)

			Mix_FreeMusic(music);

		Mix_CloseAudio();

	}

	SDL_Quit();

}

QStringList SDLInteraction::getResolutions() const

{

	QStringList result;

	SDL_Rect **modes;

	modes = SDL_ListModes(NULL, SDL_FULLSCREEN);

	if((modes == (SDL_Rect **)0) || (modes == (SDL_Rect **)-1))

	{

		result << "640x480";

	} else

	{

		for(int i = 0; modes[i]; ++i)

			if ((modes[i]->w >= 640) && (modes[i]->h >= 480))

				result << QString("%1x%2").arg(modes[i]->w).arg(modes[i]->h);

	}

	return result;

}

void SDLInteraction::addGameControllerKeys() const

{

	QStringList result;

	int i = 0;

	while(i < 1024 && sdlkeys[i][1][0] != '\0')

		i++;

	// Iterate through all game controllers

	for(int jid = 0; jid < SDL_NumJoysticks(); jid++)

	{

		SDL_Joystick* joy = SDL_JoystickOpen(jid);

		// Retrieve the game controller's name and strip "Controller (...)" that's added by some drivers (English only)

		QString joyname = QString(SDL_JoystickName(jid)).replace(QRegExp("^Controller \\((.*)\\)$"), "\\1");

		// Connected Xbox 360 controller? Use specific button names then

		// Might be interesting to add 'named' buttons for the most often used gamepads

		bool isxb = joyname.contains("Xbox 360");

		// This part of the string won't change for multiple keys/hats, so keep it

		QString prefix = QString("%1 (%2): ").arg(joyname).arg(jid + 1);

		// Register entries for missing axes not assigned to sticks of this joystick/gamepad

		for(int aid = 0; aid < SDL_JoystickNumAxes(joy) && i < 1021; aid++)

		{

			// Again store the part of the string not changing for multiple uses

			QString axis = prefix + QApplication::translate("binds (keys)", "Axis") + QString(" %1 ").arg(aid + 1);

			// Entry for "Axis Up"

			sprintf(sdlkeys[i][0], "j%da%du", jid, aid);

			sprintf(sdlkeys[i++][1], "%s", ((isxb && aid < 5) ? (prefix + QApplication::translate("binds (keys)", xbox360axes[aid * 2])) : axis + QApplication::translate("binds (keys)", "(Up)")).toStdString().c_str());

			// Entry for "Axis Down"

			sprintf(sdlkeys[i][0], "j%da%dd", jid, aid);

			sprintf(sdlkeys[i++][1], "%s", ((isxb && aid < 5) ? (prefix + QApplication::translate("binds (keys)", xbox360axes[aid * 2 + 1])) : axis + QApplication::translate("binds (keys)", "(Down)")).toStdString().c_str());

		}

		// Register entries for all coolie hats of this joystick/gamepad

		for(int hid = 0; hid < SDL_JoystickNumHats(joy) && i < 1019; hid++)

		{

			// Again store the part of the string not changing for multiple uses

			QString hat = prefix + (isxb ? (QApplication::translate("binds (keys)", xb360dpad) + QString(" ")) : QApplication::translate("binds (keys)", "Hat") + QString(" %1 ").arg(hid + 1));

			// Entry for "Hat Up"

			sprintf(sdlkeys[i][0], "j%dh%du", jid, hid);			

			sprintf(sdlkeys[i++][1], "%s", (hat + QApplication::translate("binds (keys)", "(Up)")).toStdString().c_str());

			// Entry for "Hat Down"

			sprintf(sdlkeys[i][0], "j%dh%dd", jid, hid);			

			sprintf(sdlkeys[i++][1], "%s", (hat + QApplication::translate("binds (keys)", "(Down)")).toStdString().c_str());

			// Entry for "Hat Left"

			sprintf(sdlkeys[i][0], "j%dh%dl", jid, hid);			

			sprintf(sdlkeys[i++][1], "%s", (hat + QApplication::translate("binds (keys)", "(Left)")).toStdString().c_str());

			// Entry for "Hat Right"

			sprintf(sdlkeys[i][0], "j%dh%dr", jid, hid);			

			sprintf(sdlkeys[i++][1], "%s", (hat + QApplication::translate("binds (keys)", "(Right)")).toStdString().c_str());

		}

		// Register entries for all buttons of this joystick/gamepad

		for(int bid = 0; bid < SDL_JoystickNumButtons(joy) && i < 1022; bid++)

		{

			// Buttons

			sprintf(sdlkeys[i][0], "j%db%d", jid, bid);			

			sprintf(sdlkeys[i++][1], "%s", (prefix + ((isxb && bid < 10) ? (QApplication::translate("binds (keys)", xb360buttons[bid]) + QString(" ")) : QApplication::translate("binds (keys)", "Button") + QString(" %1").arg(bid + 1))).toStdString().c_str());

		}

		// Close the game controller as we no longer need it

		SDL_JoystickClose(joy);

	}

	// Terminate the list

	sdlkeys[i][0][0] = '\0';

	sdlkeys[i][1][0] = '\0';

}

void SDLInteraction::SDLMusicInit()

{

	if (musicInitialized == 0) {

		SDL_Init(SDL_INIT_AUDIO);

		Mix_OpenAudio(44100, MIX_DEFAULT_FORMAT, 2, 1024);

		musicInitialized = 1;

	}

}

void SDLInteraction::StartMusic()

{

	SDLMusicInit();

	if (music == NULL) {

		music = Mix_LoadMUS((datadir->absolutePath() + "/Music/main theme.ogg").toLocal8Bit().constData());

	}

	Mix_VolumeMusic(MIX_MAX_VOLUME - 28);

	Mix_FadeInMusic(music, -1, 1750);

}

void SDLInteraction::StopMusic()

{

	if (music != NULL) {

		// fade out music to finish 0,5 seconds from now

		while(!Mix_FadeOutMusic(1000) && Mix_PlayingMusic()) {

			SDL_Delay(100);

		}

	}

}