/* $Id$ */

#include "stdafx.h"

#include "openttd.h"

#include "variables.h"

#include "string.h"

#include "table/strings.h"

#include "gfx.h"

#include "gui.h"

#include "functions.h"

#include "macros.h"

#include <direct.h>

#include <unistd.h>

#include <sys/stat.h>

#include <stdlib.h>

#include <time.h>

#include <dos.h>

#define INCL_WIN

#define INCL_WINCLIPBOARD

#include <os2.h>

#include <i86.h>

bool FiosIsRoot(const char *file)

{

	return path[3] == '\0';

}

void FiosGetDrives(void)

{

	FiosItem *fios;

	unsigned disk, disk2, save, total;

	_dos_getdrive(&save); // save original drive

	/* get an available drive letter */

	for (disk = 1;; disk++) {

		_dos_setdrive(disk, &total);

		if (disk >= total) return;

		_dos_getdrive(&disk2);

		if (disk == disk2) {

			FiosItem *fios = FiosAlloc();

			fios->type = FIOS_TYPE_DRIVE;

			fios->mtime = 0;

			snprintf(fios->name, lengthof(fios->name),  "%c:", 'A' + disk - 1);

			ttd_strlcpy(fios->title, fios->name, lengthof(fios->title));

		}

	}

	_dos_setdrive(save, &total); // restore the original drive

}

bool FiosGetDiskFreeSpace(const char *path, uint32 *tot)

{

	struct diskfree_t free;

	char drive = path[0] - 'A' + 1;

	if (tot != NULL && _getdiskfree(drive, &free) == 0) {

		*tot = free.avail_clusters * free.sectors_per_cluster * free.bytes_per_sector;

		return true;

	}

	return false;

}

bool FiosIsValidFile(const char *path, const struct dirent *ent, struct stat *sb)

{

	char filename[MAX_PATH];

	snprintf(filename, lengthof(filename), "%s" PATHSEP "%s", path, ent->d_name);

	if (stat(filename, sb) != 0) return false;

	return (ent->d_name[0] != '.'); // hidden file

}

static void ChangeWorkingDirectory(char *exe)

{

	char *s = strrchr(exe, '\\');

	if (s != NULL) {

		*s = '\0';

		chdir(exe);

		*s = '\\';

	}

}

void ShowInfo(const char *str)

{

	HAB hab;

	HMQ hmq;

	ULONG rc;

	// init PM env.

	hmq = WinCreateMsgQueue((hab = WinInitialize(0)), 0);

	// display the box

	rc = WinMessageBox(HWND_DESKTOP, HWND_DESKTOP, str, "OpenTTD", 0, MB_OK | MB_MOVEABLE | MB_INFORMATION);

	// terminate PM env.

	WinDestroyMsgQueue(hmq);

	WinTerminate(hab);

}

void ShowOSErrorBox(const char *buf)

{

	HAB hab;

	HMQ hmq;

	ULONG rc;

	// init PM env.

	hmq = WinCreateMsgQueue((hab = WinInitialize(0)), 0);

	// display the box

	rc = WinMessageBox(HWND_DESKTOP, HWND_DESKTOP, buf, "OpenTTD", 0, MB_OK | MB_MOVEABLE | MB_ERROR);

	// terminate PM env.

	WinDestroyMsgQueue(hmq);

	WinTerminate(hab);

}

int CDECL main(int argc, char* argv[])

{

	// change the working directory to enable doubleclicking in UIs

	ChangeWorkingDirectory(argv[0]);

	_random_seeds[1][1] = _random_seeds[1][0] = _random_seeds[0][1] = _random_seeds[0][0] = time(NULL);

	return ttd_main(argc, argv);

}

void DeterminePaths(void)

{

	char *s;

	_paths.game_data_dir = malloc(MAX_PATH);

	ttd_strlcpy(_paths.game_data_dir, GAME_DATA_DIR, MAX_PATH);

	#if defined SECOND_DATA_DIR

	_paths.second_data_dir = malloc(MAX_PATH);

	ttd_strlcpy(_paths.second_data_dir, SECOND_DATA_DIR, MAX_PATH);

	#endif

#if defined(USE_HOMEDIR)

	{

		const char *homedir = getenv("HOME");

		if (homedir == NULL) {

			const struct passwd *pw = getpwuid(getuid());

			if (pw != NULL) homedir = pw->pw_dir;

		}

		_paths.personal_dir = str_fmt("%s" PATHSEP "%s", homedir, PERSONAL_DIR);

	}

#else /* not defined(USE_HOMEDIR) */

	_paths.personal_dir = malloc(MAX_PATH);

	ttd_strlcpy(_paths.personal_dir, PERSONAL_DIR, MAX_PATH);

	// check if absolute or relative path

	s = strchr(_paths.personal_dir, '\\');

	// add absolute path

	if (s == NULL || _paths.personal_dir != s) {

		getcwd(_paths.personal_dir, MAX_PATH);

		s = strchr(_paths.personal_dir, 0);

		*s++ = '\\';

		ttd_strlcpy(s, PERSONAL_DIR, MAX_PATH);

	}

#endif /* defined(USE_HOMEDIR) */

	s = strchr(_paths.personal_dir, 0);

	// append a / ?

	if (s[-1] != '\\') strcpy(s, "\\");

	_paths.save_dir = str_fmt("%ssave", _paths.personal_dir);

	_paths.autosave_dir = str_fmt("%s\\autosave", _paths.save_dir);

	_paths.scenario_dir = str_fmt("%sscenario", _paths.personal_dir);

	_paths.heightmap_dir = str_fmt("%sscenario\\heightmap", _paths.personal_dir);

	_paths.gm_dir = str_fmt("%sgm\\", _paths.game_data_dir);

	_paths.data_dir = str_fmt("%sdata\\", _paths.game_data_dir);

	if (_config_file == NULL)

		_config_file = str_fmt("%sopenttd.cfg", _paths.personal_dir);

	_highscore_file = str_fmt("%shs.dat", _paths.personal_dir);

	_log_file = str_fmt("%sopenttd.log", _paths.personal_dir);

#if defined CUSTOM_LANG_DIR

	// sets the search path for lng files to the custom one

	_paths.lang_dir = malloc( MAX_PATH );

	ttd_strlcpy( _paths.lang_dir, CUSTOM_LANG_DIR, MAX_PATH);

#else

	_paths.lang_dir = str_fmt("%slang\\", _paths.game_data_dir);

#endif

	// create necessary folders

	mkdir(_paths.personal_dir);

	mkdir(_paths.save_dir);

	mkdir(_paths.autosave_dir);

	mkdir(_paths.scenario_dir);

	mkdir(_paths.heightmap_dir);

}

/**

 * Insert a chunk of text from the clipboard onto the textbuffer. Get TEXT clipboard

 * and append this up to the maximum length (either absolute or screenlength). If maxlength

 * is zero, we don't care about the screenlength but only about the physical length of the string

 * @param tb @Textbuf type to be changed

 * @return Return true on successfull change of Textbuf, or false otherwise

 */

bool InsertTextBufferClipboard(Textbuf *tb)

{

	HAB hab = 0;

	if (WinOpenClipbrd(hab))

	{

		const char* text = (const char*)WinQueryClipbrdData(hab, CF_TEXT);

		if (text != NULL)

		{

			uint length = 0;

			uint width = 0;

			const char* i;

			for (i = text; IsValidAsciiChar(*i); i++)

			{

				uint w;

				if (tb->length + length >= tb->maxlength - 1) break;

				w = GetCharacterWidth(FS_NORMAL, (byte)*i);

				if (tb->maxwidth != 0 && width + tb->width + w > tb->maxwidth) break;

				width += w;

				length++;

			}

			memmove(tb->buf + tb->caretpos + length, tb->buf + tb->caretpos, tb->length - tb->caretpos + 1);

			memcpy(tb->buf + tb->caretpos, text, length);

			tb->width += width;

			tb->caretxoffs += width;

			tb->length += length;

			tb->caretpos += length;

			WinCloseClipbrd(hab);

			return true;

		}

		WinCloseClipbrd(hab);

	}

	return false;

}

void CSleep(int milliseconds)

{

	delay(milliseconds);

}

const char *FS2OTTD(const char *name) {return name;}

const char *OTTD2FS(const char *name) {return name;}