/*
 * Main function.
 *
 * Copyright 1994 Alexandre Julliard
 */

static char Copyright[] = "Copyright  Alexandre Julliard, 1994";

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <locale.h>
#include <X11/Xlib.h>
#include <X11/Xresource.h>
#include <X11/Xutil.h>
#include <X11/cursorfont.h>
#include "msdos.h"
#include "windows.h"
#include "options.h"
#include "prototypes.h"
#include "texts.h"
#define DEBUG_DEFINE_VARIABLES
#include "stddebug.h"
#include "debug.h"

#define WINE_CLASS    "Wine"    /* Class name for resources */

typedef struct tagENVENTRY {
	LPSTR				Name;
	LPSTR				Value;
	WORD				wSize;
	struct tagENVENTRY	*Prev;
	struct tagENVENTRY	*Next;
	} ENVENTRY;
typedef ENVENTRY *LPENVENTRY;

LPENVENTRY	lpEnvList = NULL;

Display *display;
Screen *screen;
Window rootWindow;
int screenWidth = 0, screenHeight = 0;  /* Desktop window dimensions */
int screenDepth = 0;  /* Screen depth to use */
int desktopX = 0, desktopY = 0;  /* Desktop window position (if any) */

extern ButtonTexts ButtonText;

struct options Options =
{  /* default options */
    NULL,           /* spyFilename */
    NULL,           /* desktopGeometry */
    NULL,           /* programName */
    FALSE,          /* usePrivateMap */
    FALSE,          /* synchronous */
    FALSE,          /* backing store */
    SW_SHOWNORMAL,  /* cmdShow */
    FALSE
};


static XrmOptionDescRec optionsTable[] =
{
    { "-backingstore",  ".backingstore",    XrmoptionNoArg,  (caddr_t)"on" },
    { "-desktop",       ".desktop",         XrmoptionSepArg, (caddr_t)NULL },
    { "-depth",         ".depth",           XrmoptionSepArg, (caddr_t)NULL },
    { "-display",       ".display",         XrmoptionSepArg, (caddr_t)NULL },
    { "-iconic",        ".iconic",          XrmoptionNoArg,  (caddr_t)"on" },
    { "-name",          ".name",            XrmoptionSepArg, (caddr_t)NULL },
    { "-privatemap",    ".privatemap",      XrmoptionNoArg,  (caddr_t)"on" },
    { "-synchronous",   ".synchronous",     XrmoptionNoArg,  (caddr_t)"on" },
    { "-spy",           ".spy",             XrmoptionSepArg, (caddr_t)NULL },
    { "-debug",         ".debug",           XrmoptionNoArg,  (caddr_t)"on" },
    { "-relaydbg",      ".relaydbg",        XrmoptionNoArg,  (caddr_t)"on" },
    { "-debugmsg",      ".debugmsg",        XrmoptionSepArg, (caddr_t)NULL }
};

#define NB_OPTIONS  (sizeof(optionsTable) / sizeof(optionsTable[0]))

#define USAGE \
  "Usage:  %s [options] program_name [arguments]\n" \
  "\n" \
  "Options:\n" \
  "    -depth n        Change the depth to use for multiple-depth screens\n" \
  "    -desktop geom   Use a desktop window of the given geometry\n" \
  "    -display name   Use the specified display\n" \
  "    -iconic         Start as an icon\n" \
  "    -debug          Enter debugger before starting application\n" \
  "    -name name      Set the application name\n" \
  "    -privatemap     Use a private color map\n" \
  "    -synchronous    Turn on synchronous display mode\n" \
  "    -backingstore   Turn on backing store\n" \
  "    -spy file       Turn on message spying to the specified file\n" \
  "    -relaydbg       Display call relay information\n" \
  "    -debugmsg name  Turn debugging-messages on or off\n"


/***********************************************************************
 *           MAIN_Usage
 */
static void MAIN_Usage( char *name )
{
    fprintf( stderr, USAGE, name );
    exit(1);
}


/***********************************************************************
 *           MAIN_GetProgramName
 *
 * Get the program name. The name is specified by (in order of precedence):
 * - the option '-name'.
 * - the environment variable 'WINE_NAME'.
 * - the last component of argv[0].
 */
static char *MAIN_GetProgramName( int argc, char *argv[] )
{
    int i;
    char *p;

    for (i = 1; i < argc-1; i++)
	if (!strcmp( argv[i], "-name" )) return argv[i+1];
    if ((p = getenv( "WINE_NAME" )) != NULL) return p;
    if ((p = strrchr( argv[0], '/' )) != NULL) return p+1;
    return argv[0];
}


/***********************************************************************
 *           MAIN_GetResource
 *
 * Fetch the value of resource 'name' using the correct instance name.
 * 'name' must begin with '.' or '*'
 */
static int MAIN_GetResource( XrmDatabase db, char *name, XrmValue *value )
{
    char *buff_instance, *buff_class;
    char *dummy;
    int retval;

    buff_instance = (char *)malloc(strlen(Options.programName)+strlen(name)+1);
    buff_class    = (char *)malloc( strlen(WINE_CLASS) + strlen(name) + 1 );

    strcpy( buff_instance, Options.programName );
    strcat( buff_instance, name );
    strcpy( buff_class, WINE_CLASS );
    strcat( buff_class, name );
    retval = XrmGetResource( db, buff_instance, buff_class, &dummy, value );
    free( buff_instance );
    free( buff_class );
    return retval;
}


/***********************************************************************
 *           MAIN_GetButtonText
 *
 * Fetch the value of resource 'name' using the correct instance name.
 * 'name' must begin with '.' or '*'
 *
 * The address of the string got from the XResoure is stored in Button.Label.
 * The corresponding hotkey is taken from this string.
 */

static void MAIN_GetButtonText( XrmDatabase db, char *name, ButtonDesc *Button)
{
    XrmValue value;
    char Hotkey;
    char *i;

    if (MAIN_GetResource( db, name, &value))
      {
       Button->Label = value.addr;
       i = strchr(Button->Label,'&');
       if ( i == NULL )
         Button->Hotkey = '\0';
       else if ( i++ == '\0' )
         Button->Hotkey = '\0';
       else
         Button->Hotkey = *i;
      }
    Button->Hotkey = toupper(Button->Hotkey);
}

/***********************************************************************
 *           MAIN_GetAllButtonTexts
 *
 * Read all Button-labels from X11-resources if they exist.
 */

static void MAIN_GetAllButtonTexts(XrmDatabase db)
{
  MAIN_GetButtonText(db, ".YesLabel",    &ButtonText.Yes);
  MAIN_GetButtonText(db, ".NoLabel",     &ButtonText.No);
  MAIN_GetButtonText(db, ".OkLabel",     &ButtonText.Ok);
  MAIN_GetButtonText(db, ".CancelLabel", &ButtonText.Cancel);
  MAIN_GetButtonText(db, ".AbortLabel",  &ButtonText.Abort);
  MAIN_GetButtonText(db, ".RetryLabel",  &ButtonText.Retry);
  MAIN_GetButtonText(db, ".IgnoreLabel", &ButtonText.Ignore);
  MAIN_GetButtonText(db, ".CancelLabel", &ButtonText.Cancel);
}

/***********************************************************************
 *           MAIN_ParseOptions
 *
 * Parse command line options and open display.
 */
static void MAIN_ParseOptions( int *argc, char *argv[] )
{
    char *display_name;
    XrmValue value;
    XrmDatabase db = NULL;

      /* Parse command line */
    Options.programName = MAIN_GetProgramName( *argc, argv );
    XrmParseCommand( &db, optionsTable, NB_OPTIONS,
		     Options.programName, argc, argv );

#ifdef WINELIB
    /* Need to assemble command line and pass it to WinMain */
#else
    if (*argc < 2 || strcasecmp(argv[1], "-h") == 0) 
    	MAIN_Usage( argv[0] );
#endif

      /* Open display */

    if (MAIN_GetResource( db, ".display", &value )) display_name = value.addr;
    else display_name = NULL;

    if (!(display = XOpenDisplay( display_name )))
    {
	fprintf( stderr, "%s: Can't open display: %s\n",
		 argv[0], display_name ? display_name : "" );
	exit(1);
    }

      /* Get all options */
    if (MAIN_GetResource( db, ".iconic", &value ))
	Options.cmdShow = SW_SHOWMINIMIZED;
    if (MAIN_GetResource( db, ".privatemap", &value ))
	Options.usePrivateMap = TRUE;
    if (MAIN_GetResource( db, ".synchronous", &value ))
	Options.synchronous = TRUE;
    if (MAIN_GetResource( db, ".backingstore", &value ))
	Options.backingstore = TRUE;	
    if (MAIN_GetResource( db, ".relaydbg", &value ))
	Options.relay_debug = TRUE;
    if (MAIN_GetResource( db, ".debug", &value ))
	Options.debug = TRUE;
    if (MAIN_GetResource( db, ".spy", &value))
	Options.spyFilename = value.addr;
    if (MAIN_GetResource( db, ".depth", &value))
	screenDepth = atoi( value.addr );
    if (MAIN_GetResource( db, ".desktop", &value))
	Options.desktopGeometry = value.addr;
    if (MAIN_GetResource( db, ".debugmsg", &value))
      {
#ifndef DEBUG_RUNTIME
	fprintf(stderr,"%s: Option \"-debugmsg\" not implemented.\n" \
          "    Recompile with DEBUG_RUNTIME in include/stddebug.h defined.\n",
	  argv[0]);
	exit(1);
#else
	char *p=(char*)value.addr;
	if (strlen(p)<3)
	  goto msgerror;
	if ((*p!='+')&&(*p!='-'))
	  goto msgerror;
	if (!strcasecmp(p+1,"all"))
	  {
	    int i;
	    for (i=0;i<sizeof(debug_msg_enabled)/sizeof(short);i++)
	      debug_msg_enabled[i]=(*p=='+');
	  }
	else
	  {
	    int i;
	    for (i=0;i<sizeof(debug_msg_enabled)/sizeof(short);i++)
	      if (debug_msg_name && (!strcasecmp(p+1,debug_msg_name[i])))
		{
		  debug_msg_enabled[i]=(*p=='+');
		  break;
		}
	    if (i==sizeof(debug_msg_enabled)/sizeof(short))
	      {
	      msgerror:
		fprintf(stderr,"%s: Syntax: -debugmsg +xxx  or -debugmsg -xxx  with xxx one of\n",argv[0]);
		fprintf(stderr,"%-9s ","all");
		for(i=0;i<sizeof(debug_msg_enabled)/sizeof(short);i++)
		  if(debug_msg_name[i])
		      fprintf(stderr,"%-9s%c",debug_msg_name[i],
			(((i+2)%8==0)?'\n':' '));
		fprintf(stderr,"\n\n");
		exit(1);
	      }
	  }
#endif
      }

/*    MAIN_GetAllButtonTexts(db); */
 
}


/***********************************************************************
 *           MAIN_CreateDesktop
 */
static void MAIN_CreateDesktop( int argc, char *argv[] )
{
    int flags;
    unsigned int width = 640, height = 480;  /* Default size = 640x480 */
    char *name = "Wine desktop";
    XSizeHints size_hints;
    XWMHints wm_hints;
    XClassHint class_hints;
    XSetWindowAttributes win_attr;
    XTextProperty window_name;

    flags = XParseGeometry( Options.desktopGeometry,
			    &desktopX, &desktopY, &width, &height );
    screenWidth  = width;
    screenHeight = height;

      /* Create window */

    win_attr.event_mask = ExposureMask | KeyPressMask | KeyReleaseMask |
	                 PointerMotionMask | ButtonPressMask |
			 ButtonReleaseMask | EnterWindowMask | 
			 StructureNotifyMask;
    win_attr.cursor = XCreateFontCursor( display, XC_top_left_arrow );

    rootWindow = XCreateWindow( display, DefaultRootWindow(display),
			        desktopX, desktopY, width, height, 0,
			        CopyFromParent, InputOutput, CopyFromParent,
			        CWEventMask | CWCursor, &win_attr );

      /* Set window manager properties */

    size_hints.min_width = size_hints.max_width = width;
    size_hints.min_height = size_hints.max_height = height;
    size_hints.flags = PMinSize | PMaxSize;
    if (flags & (XValue | YValue)) size_hints.flags |= USPosition;
    if (flags & (WidthValue | HeightValue)) size_hints.flags |= USSize;
    else size_hints.flags |= PSize;

    wm_hints.flags = InputHint | StateHint;
    wm_hints.input = True;
    wm_hints.initial_state = NormalState;
    class_hints.res_name = argv[0];
    class_hints.res_class = "Wine";

    XStringListToTextProperty( &name, 1, &window_name );
    XSetWMProperties( display, rootWindow, &window_name, &window_name,
		      argv, argc, &size_hints, &wm_hints, &class_hints );

      /* Map window */

    XMapWindow( display, rootWindow );
}


XKeyboardState keyboard_state;

/***********************************************************************
 *           MAIN_SaveSetup
 */
static void MAIN_SaveSetup(void)
{
    XGetKeyboardControl(display, &keyboard_state);
}

/***********************************************************************
 *           MAIN_RestoreSetup
 */
static void MAIN_RestoreSetup(void)
{
    XKeyboardControl keyboard_value;

    keyboard_value.key_click_percent	= keyboard_state.key_click_percent;
    keyboard_value.bell_percent 	= keyboard_state.bell_percent;
    keyboard_value.bell_pitch		= keyboard_state.bell_pitch;
    keyboard_value.bell_duration	= keyboard_state.bell_duration;
    keyboard_value.auto_repeat_mode	= keyboard_state.global_auto_repeat;

    XChangeKeyboardControl(display, KBKeyClickPercent | KBBellPercent | 
    	KBBellPitch | KBBellDuration | KBAutoRepeatMode, &keyboard_value);
}

static void called_at_exit(void)
{
    Comm_DeInit();
    sync_profiles();
    MAIN_RestoreSetup();
    WSACleanup();
    CleanupSelectors();
}

/***********************************************************************
 *           main
 */
int main( int argc, char *argv[] )
{    
    int ret_val;
    int depth_count, i;
    int *depth_list;

    setlocale(LC_CTYPE,"");

    XrmInitialize();
    
    MAIN_ParseOptions( &argc, argv );

    screen       = DefaultScreenOfDisplay( display );
    screenWidth  = WidthOfScreen( screen );
    screenHeight = HeightOfScreen( screen );
    if (screenDepth)  /* -depth option specified */
    {
	depth_list = XListDepths(display,DefaultScreen(display),&depth_count);
	for (i = 0; i < depth_count; i++)
	    if (depth_list[i] == screenDepth) break;
	XFree( depth_list );
	if (i >= depth_count)
	{
	    fprintf( stderr, "%s: Depth %d not supported on this screen.\n",
		              Options.programName, screenDepth );
	    exit(1);
	}
    }
    else screenDepth  = DefaultDepthOfScreen( screen );
    if (Options.synchronous) XSynchronize( display, True );
    if (Options.desktopGeometry) MAIN_CreateDesktop( argc, argv );
    else rootWindow = DefaultRootWindow( display );

    MAIN_SaveSetup();
    DOS_InitFS();
    Comm_Init();
#ifndef WINELIB
    INT21_Init();
#endif
#ifndef sparc
    atexit(called_at_exit);
#else
    on_exit (called_at_exit, 0);
#endif

    ret_val = _WinMain( argc, argv );

    return ret_val;
}

/***********************************************************************
 *           MessageBeep    (USER.104)
 */
void MessageBeep(WORD i)
{
	XBell(display, 100);
}

/***********************************************************************
 *      GetVersion (KERNEL.3)
 */
LONG GetVersion(void)
{
	return( 0x03300a03 ); /*  dos 3.30 & win 3.10 */
}

/***********************************************************************
 *	GetWinFlags (KERNEL.132)
 */
LONG GetWinFlags(void)
{
	return (WF_STANDARD | WF_CPU286 | WF_PMODE | WF_80x87);
}

/***********************************************************************
 *	SetEnvironment (GDI.132)
 */
int SetEnvironment(LPSTR lpPortName, LPSTR lpEnviron, WORD nCount)
{
	LPENVENTRY	lpNewEnv;
	LPENVENTRY	lpEnv = lpEnvList;
	printf("SetEnvironnement('%s', '%s', %d) !\n", 
				lpPortName, lpEnviron, nCount);
	if (lpPortName == NULL) return -1;
	while (lpEnv != NULL) {
		if (lpEnv->Name != NULL && strcmp(lpEnv->Name, lpPortName) == 0) {
			if (nCount == 0 || lpEnviron == NULL) {
				if (lpEnv->Prev != NULL) lpEnv->Prev->Next = lpEnv->Next;
				if (lpEnv->Next != NULL) lpEnv->Next->Prev = lpEnv->Prev;
				free(lpEnv->Value);
				free(lpEnv->Name);
				free(lpEnv);
				printf("SetEnvironnement() // entry deleted !\n");
				return -1;
				}
			free(lpEnv->Value);
			lpEnv->Value = malloc(nCount);
			if (lpNewEnv->Value == NULL) {
				printf("SetEnvironment() // Error allocating entry value !\n");
				return 0;
			}
			memcpy(lpEnv->Value, lpEnviron, nCount);
			lpEnv->wSize = nCount;
			printf("SetEnvironnement() // entry modified !\n");
			return nCount;
			}
		if (lpEnv->Next == NULL) break;
		lpEnv = lpEnv->Next;
		}
	if (nCount == 0 || lpEnviron == NULL) return -1;
	printf("SetEnvironnement() // new entry !\n");
	lpNewEnv = malloc(sizeof(ENVENTRY));
	if (lpNewEnv == NULL) {
		printf("SetEnvironment() // Error allocating new entry !\n");
		return 0;
		}
	if (lpEnvList == NULL) {
		lpEnvList = lpNewEnv;
		lpNewEnv->Prev = NULL;
		}
	else {
		lpEnv->Next = lpNewEnv;
		lpNewEnv->Prev = lpEnv;
		}
	lpNewEnv->Next = NULL;
	lpNewEnv->Name = malloc(strlen(lpPortName) + 1);
	if (lpNewEnv->Name == NULL) {
		printf("SetEnvironment() // Error allocating entry name !\n");
		return 0;
		}
	strcpy(lpNewEnv->Name, lpPortName);
	lpNewEnv->Value = malloc(nCount);
	if (lpNewEnv->Value == NULL) {
		printf("SetEnvironment() // Error allocating entry value !\n");
		return 0;
		}
	memcpy(lpNewEnv->Value, lpEnviron, nCount);
	lpNewEnv->wSize = nCount;
	return nCount;
}

/***********************************************************************
 *	GetEnvironment (GDI.134)
 */
int GetEnvironment(LPSTR lpPortName, LPSTR lpEnviron, WORD nMaxSiz)
{
	WORD		nCount;
	LPENVENTRY	lpEnv = lpEnvList;
	printf("GetEnvironnement('%s', '%s', %d) !\n",
					lpPortName, lpEnviron, nMaxSiz);
	while (lpEnv != NULL) {
		if (lpEnv->Name != NULL && strcmp(lpEnv->Name, lpPortName) == 0) {
			nCount = min(nMaxSiz, lpEnv->wSize);
			memcpy(lpEnviron, lpEnv->Value, nCount);
			printf("GetEnvironnement() // found '%s' !\n", lpEnviron);
			return nCount;
			}
		lpEnv = lpEnv->Next;
		}
	printf("GetEnvironnement() // not found !\n");
	return 0;
}

/***********************************************************************
 *	GetTimerResolution (USER.14)
 */
LONG GetTimerResolution(void)
{
	return (1000);
}

/***********************************************************************
 *	SystemParametersInfo (USER.483)
 */
BOOL SystemParametersInfo (UINT uAction, UINT uParam, void FAR *lpvParam, UINT fuWinIni)
{
	int timeout, temp;
	char buffer[256];
	XKeyboardState		keyboard_state;
	XKeyboardControl	keyboard_value;


	fprintf(stderr, "SystemParametersInfo: action %d, param %x, flag %x\n", 
			uAction, uParam, fuWinIni);

	switch (uAction) {
		case SPI_GETBEEP:
			XGetKeyboardControl(display, &keyboard_state);
			if (keyboard_state.bell_percent == 0)
				*(BOOL *) lpvParam = FALSE;
			else
				*(BOOL *) lpvParam = TRUE;
			break;
		
		case SPI_GETBORDER:
			*(INT *) lpvParam = 1;
			break;

		case SPI_GETFASTTASKSWITCH:
			*(BOOL *) lpvParam = FALSE;
			break;

		case SPI_GETGRIDGRANULARITY:
			*(INT *) lpvParam = 1;
			break;

		case SPI_GETICONTITLEWRAP:
			*(BOOL *) lpvParam = FALSE;
			break;

		case SPI_GETKEYBOARDDELAY:
			*(INT *) lpvParam = 1;
			break;

		case SPI_GETKEYBOARDSPEED:
			*(WORD *) lpvParam = 30;
			break;

		case SPI_GETMENUDROPALIGNMENT:
			*(BOOL *) lpvParam = FALSE;
			break;

		case SPI_GETSCREENSAVEACTIVE:
			*(BOOL *) lpvParam = FALSE;
			break;

		case SPI_GETSCREENSAVETIMEOUT:
			XGetScreenSaver(display, &timeout, &temp,&temp,&temp);
			*(INT *) lpvParam = timeout * 1000;
			break;

		case SPI_ICONHORIZONTALSPACING:
			if (lpvParam == NULL)
				fprintf(stderr, "SystemParametersInfo: Horizontal icon spacing set to %d\n.", uParam);
			else
				*(INT *) lpvParam = 50;
			break;

		case SPI_ICONVERTICALSPACING:
			if (lpvParam == NULL)
				fprintf(stderr, "SystemParametersInfo: Vertical icon spacing set to %d\n.", uParam);
			else
				*(INT *) lpvParam = 50;
			break;

		case SPI_SETBEEP:
			if (uParam == TRUE)
				keyboard_value.bell_percent = -1;
			else
				keyboard_value.bell_percent = 0;			
   			XChangeKeyboardControl(display, KBBellPercent, 
   							&keyboard_value);
			break;

		case SPI_SETSCREENSAVEACTIVE:
			if (uParam == TRUE)
				XActivateScreenSaver(display);
			else
				XResetScreenSaver(display);
			break;

		case SPI_SETSCREENSAVETIMEOUT:
			XSetScreenSaver(display, uParam, 60, DefaultBlanking, 
						DefaultExposures);
			break;

		case SPI_SETDESKWALLPAPER:
			return (SetDeskWallPaper((LPSTR) lpvParam));
			break;

		case SPI_SETDESKPATTERN:
			if ((INT) uParam == -1) {
				GetProfileString("Desktop", "Pattern", 
						"170 85 170 85 170 85 170 85", 
						buffer, sizeof(buffer) );
				return (DESKTOP_SetPattern((LPSTR) buffer));
			} else
				return (DESKTOP_SetPattern((LPSTR) lpvParam));
			break;

		case SPI_LANGDRIVER:
		case SPI_SETBORDER:
		case SPI_SETDOUBLECLKHEIGHT:
		case SPI_SETDOUBLECLICKTIME:
		case SPI_SETDOUBLECLKWIDTH:
		case SPI_SETFASTTASKSWITCH:
		case SPI_SETKEYBOARDDELAY:
		case SPI_SETKEYBOARDSPEED:
			fprintf(stderr, "SystemParametersInfo: option %d ignored.\n", uParam);
			break;

		default:
			fprintf(stderr, "SystemParametersInfo: unknown option %d.\n", uParam);
			break;
	}
	return 1;
}

/***********************************************************************
*	HMEMCPY (KERNEL.348)
*/
void hmemcpy(void FAR *hpvDest, const void FAR *hpvSource, long cbCopy)
{
	memcpy(hpvDest,	hpvSource, cbCopy);
}

/***********************************************************************
*	COPY (GDI.250)
*/
void Copy(LPVOID lpSource, LPVOID lpDest, WORD nBytes)
{
	memcpy(lpDest, lpSource, nBytes);
}

/***********************************************************************
*	SWAPMOUSEBUTTON (USER.186)
*/
BOOL SwapMouseButton(BOOL fSwap)
{
	return 0;	/* don't swap */
}

/***********************************************************************
*	ISROMMODULE (KERNEL.323)
*/
BOOL IsRomModule(HANDLE x)
{
	/* I don't know the prototype, I assume that it returns true
	   if the dll is located in rom */
	   
	return FALSE;
}

/***********************************************************************
*	FileCDR (KERNEL.130)
*/
void FileCDR(FARPROC x)
{
	printf("FileCDR(%8x)\n", (int) x);
}