/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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; either version 2
 * of the License, or (at your option) any later version.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */
#if defined __unix__ && !(defined __APPLE__)
#include "linuxstuff.h"
#endif

#if 0
#ifdef _WIN32
#include "winstuff.h"
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <unistd.h>

#include <iostream>


#include <stdexcept>

#include <time.h>
#include <sys/time.h>

#if !defined(HAVE_GLES2)
#include "GLee.h"
#else
#include <GLES2/gl2.h>
#include "eglport/eglport.h"
#endif

#include <SDL/SDL.h>
#include <SDL/SDL_syswm.h>
#endif

#include "allfiles.h"
#include "debug.h"
#include "platform-dependent.h"
#include "language.h"
#include "stringy.h"
#include "sludger.h"
#include "backdrop.h"
#include "language.h"
#include "newfatal.h"
#include "people.h"
#include "floor.h"
#include "objtypes.h"
#include "talk.h"
#include "statusba.h"
#include "transition.h"
#include "CommonCode/specialsettings.h"
#include "timing.h"
#include "sound.h"
#include "sludger.h"
#include "graphics.h"
#include "helpers.h"


#ifdef _WIN32
#define PATHSLASH '\\'
#else
#define PATHSLASH '/'
#endif

extern bool runningFullscreen;

#ifndef MAX_PATH
#define MAX_PATH        1024          // maximum size of a path name
#endif

HWND hMainWindow = NULL;

int realWinWidth = 640, realWinHeight = 480;
extern float cameraZoom;

extern int specialSettings;
extern inputType input;
extern variableStack *noStack;

int dialogValue = 0;

char *gameName = NULL;
char *gamePath = NULL;
char *bundleFolder;

void setGameFilePath(char *f) {
	char currentDir[1000];
#if 0
	if (!getcwd(currentDir, 998)) {
		debugOut("Can't get current directory.\n");
	}

	int got = -1, a;

	for (a = 0; f[a]; a ++) {
		if (f[a] == PATHSLASH) got = a;
	}

	if (got != -1) {
		f[got] = 0;
		if (chdir(f)) {
			debugOut("Error: Failed changing to directory %s\n", f);
		}
		f[got] = PATHSLASH;
	}

	gamePath = new char[400];
	if (!checkNew(gamePath)) return;

	if (!getcwd(gamePath, 398)) {
		debugOut("Can't get game directory.\n");
	}

	if (chdir(currentDir)) {
		debugOut("Error: Failed changing to directory %s\n", currentDir);
	}
#endif
}

#if ALLOW_FILE
void saveHSI(FILE *writer);
#endif

extern bool reallyWantToQuit;

#ifdef _WIN32
#undef main
#endif

int weAreDoneSoQuit;

void checkInput() {
	static bool fakeRightclick = false;
#if 0
	SDL_Event event;

	/* Check for events */
	while (SDL_PollEvent(&event)) {
		switch (event.type) {

		case SDL_VIDEORESIZE:
			realWinWidth = event.resize.w;
			realWinHeight = event.resize.h;
			setGraphicsWindow(false, true, true);
			break;

		case SDL_MOUSEMOTION:
			input.justMoved = true;
			input.mouseX = event.motion.x * ((float)winWidth / cameraZoom) / realWinWidth;
			input.mouseY = event.motion.y * ((float)winHeight / cameraZoom) / realWinHeight;
			break;

		case SDL_MOUSEBUTTONDOWN:
			if (event.button.button == SDL_BUTTON_LEFT) {
				if (SDL_GetModState() & KMOD_CTRL) {
					input.rightClick = true;
					fakeRightclick = true;
				} else {
					input.leftClick = true;
					fakeRightclick = false;
				}
			}
			if (event.button.button == SDL_BUTTON_RIGHT) input.rightClick = true;
			input.mouseX = event.motion.x * ((float)winWidth / cameraZoom) / realWinWidth;
			input.mouseY = event.motion.y * ((float)winHeight / cameraZoom) / realWinHeight;
			break;

		case SDL_MOUSEBUTTONUP:
			if (event.button.button == SDL_BUTTON_LEFT) {
				if (fakeRightclick) {
					fakeRightclick = false;
					input.rightRelease = true;
				} else {
					input.leftRelease = true;
				}
			}
			if (event.button.button == SDL_BUTTON_RIGHT) input.rightRelease = true;
			input.mouseX = event.motion.x * ((float)winWidth / cameraZoom) / realWinWidth;
			input.mouseY = event.motion.y * ((float)winHeight / cameraZoom) / realWinHeight;
			break;

		case SDL_KEYDOWN:
			// A Windows key is pressed - let's leave fullscreen.
			if (runningFullscreen) {
				if (event.key.keysym.sym == SDLK_LSUPER || event.key.keysym.sym == SDLK_LSUPER) {
					setGraphicsWindow(!runningFullscreen);
				}
			}
			// Ignore Command keypresses - they're for the OS to handle.
			if (event.key.keysym.mod & KMOD_META) {
				// Command+F - let's switch to/from full screen
				if ('f' == event.key.keysym.unicode) {
					setGraphicsWindow(!runningFullscreen);
				}
				break;
			} else if (event.key.keysym.mod & KMOD_ALT) {
				// Alt + Enter also switches full screen mode
				if (SDLK_RETURN == event.key.keysym.sym) {
					setGraphicsWindow(!runningFullscreen);
				}
				if (SDLK_a == event.key.keysym.sym) {
					gameSettings.antiAlias = !gameSettings.antiAlias;
					break;
				}
				// Allow Alt+F4 to quit
				if (SDLK_F4 ==  event.key.keysym.sym) {
					SDL_Event event;
					event.type = SDL_QUIT;
					SDL_PushEvent(&event);
				}

				break;
			}
			switch (event.key.keysym.sym) {
			case SDLK_BACKSPACE:
			case SDLK_DELETE:   // Ok, mapping these to the same key is weird, I admit. But good?
				input.keyPressed = 127;
				break;
			case SDLK_TAB:
				input.keyPressed = 9;
				break;
			case SDLK_RETURN:
				input.keyPressed = 13;
				break;
			case SDLK_ESCAPE:
				input.keyPressed = 27;
				break;
			case SDLK_PAGEUP:
				input.keyPressed = 63276;
				break;
			case SDLK_PAGEDOWN:
				input.keyPressed = 63277;
				break;
			case SDLK_END:
				input.keyPressed = 63275;
				break;
			case SDLK_HOME:
				input.keyPressed = 63273;
				break;
			case SDLK_LEFT:
				input.keyPressed = 63234;
				break;
			case SDLK_UP:
				input.keyPressed = 63232;
				break;
			case SDLK_RIGHT:
				input.keyPressed = 63235;
				break;
			case SDLK_DOWN:
				input.keyPressed = 63233;
				break;
			case SDLK_F1:
				input.keyPressed = 63236;
				break;
			case SDLK_F2:
				input.keyPressed = 63237;
				break;
			case SDLK_F3:
				input.keyPressed = 63238;
				break;
			case SDLK_F4:
				input.keyPressed = 63239;
				break;
			case SDLK_F5:
				input.keyPressed = 63240;
				break;
			case SDLK_F6:
				input.keyPressed = 63241;
				break;
			case SDLK_F7:
				input.keyPressed = 63242;
				break;
			case SDLK_F8:
				input.keyPressed = 63243;
				break;
			case SDLK_F9:
				input.keyPressed = 63244;
				break;
			case SDLK_F10:
				input.keyPressed = 63245;
				break;
			case SDLK_F11:
				input.keyPressed = 63246;
				break;
			case SDLK_F12:
				input.keyPressed = 63247;
				break;
			default:
				input.keyPressed = event.key.keysym.unicode;
				break;
			}
			break;

		case SDL_QUIT:
			if (reallyWantToQuit) {
				// The game file has requested that we quit
				weAreDoneSoQuit = 1;
			} else {
				// The request is from elsewhere - ask for confirmation.
				setGraphicsWindow(false);
				//fprintf (stderr, "%s %s\n", gameName, getNumberedString(2));
				if (msgBoxQuestion(gameName, getNumberedString(2))) {
					weAreDoneSoQuit = 1;
				}
			}
			break;

		default:
			break;
		}
	}
#endif
}

int main_loop(char *filename)
#if 0
try
#endif
{
	/* Dimensions of our window. */
	winWidth = 640;
	winHeight = 480;

	char *sludgeFile;

#if 0
	time_t t;
	srand((unsigned) time(&t));


	// bundleFolder is used to look for the game file
	// and later to find the shader programs
#ifdef __APPLE__
	// bundleFolder is set in applicationDidFinishLaunching.
#elif defined __unix__
	bundleFolder = copyString(DATADIR); // DATADIR is defined in the Makefile.
#else
	bundleFolder = copyString(argv[0]);
	int lastSlash = -1;
	for (int i = 0; bundleFolder[i]; i ++) {
		if (bundleFolder[i] == PATHSLASH) lastSlash = i;
	}
	bundleFolder[lastSlash + 1] = NULL;
#endif

#endif

	sludgeFile = filename;
	if (!sludgeFile) {
		sludgeFile = joinStrings(bundleFolder, "gamedata.slg");
		if (!(fileExists(sludgeFile))) {
			delete sludgeFile;
			sludgeFile = joinStrings(bundleFolder, "gamedata");
			if (!(fileExists(sludgeFile))) {
#if 0
				sludgeFile = grabFileName();
#endif
			}
		}
	}

#if 0
#if defined __unix__ && !(defined __APPLE__)
	if (!fileExists(sludgeFile)) {
		fprintf(stderr, "Game file not found.\n");
		printCmdlineUsage();
		return 0;
	}
#endif
#endif

	// The player pressed cancel in the file selection dialogue,
	// so we should quit now.
	if (!sludgeFile) return 0;

	// OK, so we DO want to start up, then...
	setGameFilePath(sludgeFile);
	if (!initSludge(sludgeFile)) return 0;

#if 0
	/* Initialize the SDL library */
	if (SDL_Init(SDL_INIT_VIDEO) < 0) {
		msgBox("Startup Error: Couldn't initialize SDL.", SDL_GetError());
		exit(1);
	}
#endif
	if (gameIcon) {
#if 0
		if (SDL_Surface *programIcon = SDL_CreateRGBSurfaceFrom(gameIcon, iconW, iconH, 32, iconW * 4, 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000)) {
			SDL_WM_SetIcon(programIcon, NULL);
			SDL_FreeSurface(programIcon);
		}
#endif
		delete gameIcon;
	}
#if 0
	// Needed to make menu shortcuts work (on Mac), i.e. Command+Q for quit
	SDL_putenv((char *)"SDL_ENABLEAPPEVENTS=1");

	setupOpenGLStuff();
#endif

#ifdef _WIN32
	SDL_SysWMinfo wmInfo;
	SDL_VERSION(&wmInfo.version);
	SDL_GetWMInfo(&wmInfo);
	hMainWindow = wmInfo.window;
#endif

	registerWindowForFatal();

	if (!resizeBackdrop(winWidth, winHeight)) return fatal("Couldn't allocate memory for backdrop");

	blankScreen(0, 0, winWidth, winHeight);
	if (!initPeople()) return fatal("Couldn't initialise people stuff");
	if (!initFloor()) return fatal("Couldn't initialise floor stuff");
	if (!initObjectTypes()) return fatal("Couldn't initialise object type stuff");
	initSpeech();
	initStatusBar();
	resetRandW();

#if ALLOW_FILE
	gameName = getNumberedString(1);
#endif
#if 0
	SDL_WM_SetCaption(gameName, gameName);

	if ((specialSettings & (SPECIAL_MOUSE_1 | SPECIAL_MOUSE_2)) == SPECIAL_MOUSE_1) {
		//  Hide the standard mouse cursor!
		// This is done in a weird way because there's bugs with SDL_ShowCursor(SDL_DISABLE);
		SDL_Cursor *cursor = NULL;
		Uint8 data = 0;
		SDL_FreeCursor(cursor);
		cursor = SDL_CreateCursor(&data, &data, 1, 1, 0, 0);
		SDL_SetCursor(cursor);
	}

	if (!(specialSettings & SPECIAL_SILENT)) {
		initSoundStuff(hMainWindow);
	}
#endif

	startNewFunctionNum(0, 0, NULL, noStack);

#if 0
	Init_Timer();

	SDL_EnableUNICODE(1);
#endif
	weAreDoneSoQuit = 0;
	while (!weAreDoneSoQuit) {
		checkInput();
		walkAllPeople();
		handleInput();
		sludgeDisplay();
#if 0
		Wait_Frame();
#endif
	}

	debugOut("Bye!\n\n");

	delete[] gamePath;

#if 0
	killSoundStuff();
#endif

#if defined(HAVE_GLES2)
	EGL_Close();
#endif

#if 0
	/* Clean up the SDL library */
	SDL_Quit();
#endif
	displayFatal();
	return (0);
}
#if 0
catch (std::exception &ex) { //NOTE by reference, not value
	std::cerr << "std::exception caught: " << ex.what() << std::endl;
	return -1;
} catch (...) {
	std::cerr << "Unknown exception was never caught" << std::endl;
	return -2;
}
#endif