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/////////////////////////////////////////////////////////////////////////
// $Id: textconfig.cc,v 1.18 2003/10/24 15:39:57 vruppert Exp $
/////////////////////////////////////////////////////////////////////////
//
// This is code for a text-mode configuration interface.  Note that this file
// does NOT include bochs.h.  Instead, it does all of its contact with
// the simulator through an object called SIM, defined in siminterface.cc
// and siminterface.h.  This separation adds an extra layer of method
// calls before any work can be done, but the benefit is that the compiler
// enforces the rules.  I can guarantee that textconfig.cc doesn't call any
// I/O device objects directly, for example, because the bx_devices symbol
// isn't even defined in this context.
//

#include "config.h"

extern "C" {
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <assert.h>
}
#include "osdep.h"
#include "textconfig.h"
#include "siminterface.h"
#include "extplugin.h"
#ifdef WIN32
#include "win32dialog.h"
#endif

#define CI_PATH_LENGTH 512

#define BX_INSERTED 11

/* functions for changing particular options */
void bx_config_interface_init ();
int bx_read_rc (char *rc);
int bx_write_rc (char *rc);
void bx_log_options (int individual);

/******************************************************************/
/* lots of code stolen from bximage.c */
/* remove leading spaces, newline junk at end.  returns pointer to 
 cleaned string, which is between s0 and the null */
char *
clean_string (char *s0)
{
  char *s = s0;
  char *ptr;
  /* find first nonblank */
  while (isspace (*s))
    s++;
  /* truncate string at first non-alphanumeric */
  ptr = s;
  while (isprint (*ptr))
    ptr++;
  *ptr = 0;
  return s;
}

void
double_percent (char *s, int max_len)
{
  char d[CI_PATH_LENGTH];
  int  i=0,j=0;

  if (max_len>CI_PATH_LENGTH)
    max_len=CI_PATH_LENGTH;

  max_len--;

  while((s[i]!=0)&&(j<max_len))
  {
    d[j++]=s[i];
    if((s[i]=='%')&&(j<max_len))
    {
      d[j++]=s[i];
    }
    i++;
  }
  d[j]=0;
  strcpy(s,d);
}

/* returns 0 on success, -1 on failure.  The value goes into out. */
int 
ask_uint (char *prompt, Bit32u min, Bit32u max, Bit32u the_default, Bit32u *out, int base)
{
  Bit32u n = max + 1;
  char buffer[1024];
  char *clean;
  int illegal;
  assert (base==10 || base==16);
  while (1) {
    printf (prompt, the_default);
    if (!fgets (buffer, sizeof(buffer), stdin))
      return -1;
    clean = clean_string (buffer);
    if (strlen(clean) < 1) {
      // empty line, use the default
      *out = the_default;
      return 0;
    }
    const char *format = (base==10) ? "%d" : "%x";
    illegal = (1 != sscanf (buffer, format, &n));
    if (illegal || n<min || n>max) {
      printf ("Your choice (%s) was not an integer between %u and %u.\n\n",
	  clean, min, max);
    } else {
      // choice is okay
      *out = n;
      return 0;
    }
  }
}

// identical to ask_uint, but uses signed comparisons
int 
ask_int (char *prompt, Bit32s min, Bit32s max, Bit32s the_default, Bit32s *out)
{
  int n = max + 1;
  char buffer[1024];
  char *clean;
  int illegal;
  while (1) {
    printf (prompt, the_default);
    if (!fgets (buffer, sizeof(buffer), stdin))
      return -1;
    clean = clean_string (buffer);
    if (strlen(clean) < 1) {
      // empty line, use the default
      *out = the_default;
      return 0;
    }
    illegal = (1 != sscanf (buffer, "%d", &n));
    if (illegal || n<min || n>max) {
      printf ("Your choice (%s) was not an integer between %d and %d.\n\n",
	  clean, min, max);
    } else {
      // choice is okay
      *out = n;
      return 0;
    }
  }
}

int 
ask_menu (char *prompt, int n_choices, char *choice[], int the_default, int *out)
{
  char buffer[1024];
  char *clean;
  int i;
  *out = -1;
  while (1) {
    printf (prompt, choice[the_default]);
    if (!fgets (buffer, sizeof(buffer), stdin))
      return -1;
    clean = clean_string (buffer);
    if (strlen(clean) < 1) {
      // empty line, use the default
      *out = the_default;
      return 0;
    }
    for (i=0; i<n_choices; i++) {
      if (!strcmp (choice[i], clean)) {
	// matched, return the choice number
	*out = i;
	return 0;
      }
    }
    if (clean[0] != '?')
      printf ("Your choice (%s) did not match any of the choices:\n", clean);
    for (i=0; i<n_choices; i++) {
      if (i>0) printf (", ");
      printf ("%s", choice[i]);
    }
    printf ("\n");
  }
}

int 
ask_yn (char *prompt, Bit32u the_default, Bit32u *out)
{
  char buffer[16];
  char *clean;
  *out = 1<<31;
  while (1) {
    // if there's a %s field, substitute in the default yes/no.
    printf (prompt, the_default ? "yes" : "no");
    if (!fgets (buffer, sizeof(buffer), stdin))
      return -1;
    clean = clean_string (buffer);
    if (strlen(clean) < 1) {
      // empty line, use the default
      *out = the_default;
      return 0;
    }
    switch (tolower(clean[0])) {
      case 'y': *out=1; return 0;
      case 'n': *out=0; return 0;
    }
    printf ("Please type either yes or no.\n");
  }
}

// returns -1 on error (stream closed or  something)
// returns 0 if default was taken
// returns 1 if value changed
int 
ask_string (char *prompt, char *the_default, char *out)
{
  char buffer[1024];
  char *clean;
  assert (the_default != out);
  out[0] = 0;
  printf (prompt, the_default);
  if (fgets (buffer, sizeof(buffer), stdin) == NULL)
    return -1;
  clean = clean_string (buffer);
  if (strlen(clean) < 1) {
    // empty line, use the default
    strcpy (out, the_default);
    return 0;
  }
  strcpy (out, clean);
  return 1;
}

/******************************************************************/

static char *startup_menu_prompt =
"------------------------------\n"
"Bochs Configuration: Main Menu\n"
"------------------------------\n"
"\n"
"This is the Bochs Configuration Interface, where you can describe the\n"
"machine that you want to simulate.  Bochs has already searched for a\n"
"configuration file (typically called bochsrc.txt) and loaded it if it\n"
"could be found.  When you are satisfied with the configuration, go\n"
"ahead and start the simulation.\n"
"\n"
"You can also start bochs with the -q option to skip these menus.\n"
"\n"
"1. Restore factory default configuration\n"
"2. Read options from...\n"
"3. Edit options\n"
"4. Save options to...\n"
"5. Begin simulation\n"
"6. Quit now\n"
"\n"
"Please choose one: [%d] ";

static char *startup_options_prompt =
"------------------\n"
"Bochs Options Menu\n"
"------------------\n"
"0. Return to previous menu\n"
"1. Log file: %s\n"
"2. Log prefix: %s\n"
"3. Debug log file: %s\n"
"4. Log options for all devices\n"
"5. Log options for individual devices\n"
"6. Memory options\n"
"7. Interface options\n"
"8. Disk options\n"
"9. Serial or Parallel port options\n"
"10. Sound Blaster 16 options\n"
"11. NE2000 network card options\n"
"12. Keyboard options\n"
"13. Other options\n"
"\n"
"Please choose one: [0] ";

static char *runtime_menu_prompt =
"---------------------\n"
"Bochs Runtime Options\n"
"---------------------\n"
"1. Floppy disk 0: %s\n"
"2. Floppy disk 1: %s\n"
"3. 1st CDROM: %s\n"
"4. 2nd CDROM: %s\n"
"5. 3rd CDROM: %s\n"
"6. 4th CDROM: %s\n"
"7. (not implemented)\n"
"8. Log options for all devices\n"
"9. Log options for individual devices\n"
"10. VGA Update Interval: %d\n"
"11. Mouse: %s\n"
"12. Keyboard paste delay: %d\n"
"13. Userbutton shortcut: %s\n"
"14. Instruction tracing: off (doesn't exist yet)\n"
"15. Continue simulation\n"
"16. Quit now\n"
"\n"
"Please choose one:  [15] ";

#define NOT_IMPLEMENTED(choice) \
  fprintf (stderr, "ERROR: choice %d not implemented\n", choice);

#define BAD_OPTION(menu,choice) \
  do {fprintf (stderr, "ERROR: menu %d has no choice %d\n", menu, choice); \
      assert (0); } while (0)

void build_runtime_options_prompt (char *format, char *buf, int size)
{
  bx_floppy_options floppyop;
  bx_atadevice_options cdromop;
/*  bx_param_num_c *ips = SIM->get_param_num (BXP_IPS); */
  char buffer[6][128];
  for (int i=0; i<2; i++) {
    SIM->get_floppy_options (i, &floppyop);
    if (floppyop.Odevtype->get () == BX_FLOPPY_NONE)
      strcpy (buffer[i], "(not present)");
    else {
      sprintf (buffer[i], "%s, size=%s, %s", floppyop.Opath->getptr (),
        SIM->get_floppy_type_name (floppyop.Otype->get ()),
        (floppyop.Ostatus->get () == BX_INSERTED)? "inserted" : "ejected");
      if (!floppyop.Opath->getptr ()[0]) strcpy (buffer[i], "none");
    }
  }

  // 4 cdroms supported at run time
  int device;
  for (Bit8u cdrom=0; cdrom<4; cdrom++) {
    if (!SIM->get_cdrom_options (cdrom, &cdromop, &device) || !cdromop.Opresent->get ())
      sprintf (buffer[2+cdrom], "(not present)");
    else
      sprintf (buffer[2+cdrom], "(%s on ata%d) %s, %s",
        device&1?"slave":"master", device/2, cdromop.Opath->getptr (),
        (cdromop.Ostatus->get () == BX_INSERTED)? "inserted" : "ejected");
    }

  snprintf (buf, size, format, buffer[0], buffer[1], buffer[2], 
      buffer[3], buffer[4], buffer[5],
      /* ips->get (), */
      SIM->get_param_num (BXP_VGA_UPDATE_INTERVAL)->get (), 
      SIM->get_param_num (BXP_MOUSE_ENABLED)->get () ? "enabled" : "disabled",
      SIM->get_param_num (BXP_KBD_PASTE_DELAY)->get (),
      SIM->get_param_string (BXP_USER_SHORTCUT)->getptr ());
}

int do_menu (bx_id id) {
  bx_list_c *menu = (bx_list_c *)SIM->get_param (id);
  while (1) {
    menu->get_choice()->set (0);
    int status = menu->text_ask (stdin, stderr);
    if (status < 0) return status;
    bx_param_num_c *choice = menu->get_choice();
    if (choice->get () < 1)
      return choice->get ();
    else {
      int index = choice->get () - 1;  // choosing 1 means list[0]
      bx_param_c *chosen = menu->get (index);
      assert (chosen != NULL);
      chosen->text_ask (stdin, stderr);
    }
  }
}

void askparam (bx_id id)
{
  bx_param_c *param = SIM->get_param (id);
  param->text_ask (stdin, stderr);
}

int bx_config_interface (int menu)
{
 Bit32u choice;
 while (1) {
  switch (menu)
  {
   case BX_CI_INIT:
     bx_config_interface_init ();
     return 0;
   case BX_CI_START_SIMULATION: {
     SIM->begin_simulation (bx_startup_flags.argc, bx_startup_flags.argv);
     // we don't expect it to return, but if it does, quit
     SIM->quit_sim(1);
     break;
     }
   case BX_CI_START_MENU:
     {
       Bit32u default_choice;
       switch (SIM->get_param_enum(BXP_BOCHS_START)->get ()) {
         case BX_LOAD_START: 
           default_choice = 2; break;
         case BX_EDIT_START: 
           default_choice = 3; break;
         default: 
           default_choice = 5; break;
       }

       if (ask_uint (startup_menu_prompt, 1, 6, default_choice, &choice, 10) < 0) return -1;
       switch (choice) {
	 case 1:
	   fprintf (stderr, "I reset all options back to their factory defaults.\n\n");
	   SIM->reset_all_param ();
	   SIM->get_param_enum(BXP_BOCHS_START)->set(BX_EDIT_START);
	   break;
	 case 2: 
	   // Before reading a new configuration, reset every option to its
	   // original state.
	   SIM->reset_all_param ();
	   if (bx_read_rc (NULL) >= 0)
	     SIM->get_param_enum(BXP_BOCHS_START)->set(BX_RUN_START);
	   break;
	 case 3: 
           bx_config_interface (BX_CI_START_OPTS); 
	   SIM->get_param_enum(BXP_BOCHS_START)->set(BX_RUN_START);
           break;
	 case 4: bx_write_rc (NULL); break;
	 case 5: bx_config_interface (BX_CI_START_SIMULATION); break;
	 case 6: SIM->quit_sim (1); return -1;
	 default: BAD_OPTION(menu, choice);
       }
     }
     break;
   case BX_CI_START_OPTS:
     {
       char prompt[CI_PATH_LENGTH];
       char oldpath[CI_PATH_LENGTH];
       char olddebuggerpath[CI_PATH_LENGTH];
       char oldprefix[CI_PATH_LENGTH];
       int  retval;

       retval = SIM->get_log_file (oldpath, CI_PATH_LENGTH);
       assert (retval >= 0);
       double_percent(oldpath,CI_PATH_LENGTH);
       retval = SIM->get_log_prefix (oldprefix, CI_PATH_LENGTH);
       assert (retval >= 0);
       double_percent(oldprefix,CI_PATH_LENGTH);
       retval = SIM->get_debugger_log_file (olddebuggerpath, CI_PATH_LENGTH);
       assert (retval >= 0);
       double_percent(olddebuggerpath,CI_PATH_LENGTH);

       sprintf (prompt, startup_options_prompt, oldpath, oldprefix, olddebuggerpath);
       if (ask_uint (prompt, 0, 13, 0, &choice, 10) < 0) return -1;
       switch (choice) {
	 case 0: return 0;
	 case 1: askparam (BXP_LOG_FILENAME); break;
	 case 2: askparam (BXP_LOG_PREFIX); break;
	 case 3: askparam (BXP_DEBUGGER_LOG_FILENAME); break;
	 case 4: bx_log_options (0); break;
	 case 5: bx_log_options (1); break;
	 case 6: do_menu (BXP_MENU_MEMORY); break;
	 case 7: do_menu (BXP_MENU_INTERFACE); break;
	 case 8: do_menu (BXP_MENU_DISK); break;
	 case 9: do_menu (BXP_MENU_SERIAL_PARALLEL); break;
	 case 10: do_menu (BXP_SB16); break;
	 case 11: do_menu (BXP_NE2K); break;
	 case 12: do_menu (BXP_MENU_KEYBOARD); break;
	 case 13: do_menu (BXP_MENU_MISC); break;
	 default: BAD_OPTION(menu, choice);
       }
     }
     break;
   case BX_CI_RUNTIME:
     char prompt[1024];
     bx_floppy_options floppyop;
     bx_atadevice_options cdromop;
     build_runtime_options_prompt (runtime_menu_prompt, prompt, 1024);
     if (ask_uint (prompt, 1, 16, 15, &choice, 10) < 0) return -1;
     switch (choice) {
       case 1: 
         SIM->get_floppy_options (0, &floppyop);
	 if (floppyop.Odevtype->get () != BX_FLOPPY_NONE) do_menu (BXP_FLOPPYA);
	 break;
       case 2:
         SIM->get_floppy_options (1, &floppyop);
	 if (floppyop.Odevtype->get () != BX_FLOPPY_NONE) do_menu (BXP_FLOPPYB);
	 break;
       case 3:
       case 4:
       case 5:
       case 6:
	 int device;
         if (SIM->get_cdrom_options (choice - 3, &cdromop, &device) && cdromop.Opresent->get ()) {
	   // disable type selection
	   SIM->get_param((bx_id)(BXP_ATA0_MASTER_TYPE + device))->set_enabled(0);
	   SIM->get_param((bx_id)(BXP_ATA0_MASTER_MODEL + device))->set_enabled(0);
	   SIM->get_param((bx_id)(BXP_ATA0_MASTER_BIOSDETECT + device))->set_enabled(0);
           do_menu ((bx_id)(BXP_ATA0_MASTER + device));
           }
	 break;
       case 7: // not implemented yet because I would have to mess with
	       // resetting timers and pits and everything on the fly.
               // askparam (BXP_IPS);
	       break;
       case 8: bx_log_options (0); break;
       case 9: bx_log_options (1); break;
       case 10: askparam (BXP_VGA_UPDATE_INTERVAL); break;
       case 11: askparam (BXP_MOUSE_ENABLED); break;
       case 12: askparam (BXP_KBD_PASTE_DELAY); break;
       case 13: askparam (BXP_USER_SHORTCUT); break;
       case 14: NOT_IMPLEMENTED (choice); break;
       case 15: fprintf (stderr, "Continuing simulation\n"); return 0;
       case 16:
	 fprintf (stderr, "You chose quit on the configuration interface.\n");
	 SIM->quit_sim (1);
	 return -1;
       default: fprintf (stderr, "Menu choice %d not implemented.\n", choice);
     }
     break;
   default:
     fprintf (stderr, "Unknown config interface menu type.\n");
     assert (menu >=0 && menu < BX_CI_N_MENUS);
  }
 }
}

static void bx_print_log_action_table ()
{
  // just try to print all the prefixes first.
  fprintf (stderr, "Current log settings:\n");
  fprintf (stderr, "                 Debug      Info       Error       Panic       Pass\n");
  fprintf (stderr, "ID    Device     Action     Action     Action      Action      Action\n");
  fprintf (stderr, "----  ---------  ---------  ---------  ----------  ----------  ----------\n");
  int i, j, imax=SIM->get_n_log_modules ();
  for (i=0; i<imax; i++) {
    if (strcmp(SIM->get_prefix(i), "[     ]")) {
      fprintf (stderr, "%3d.  %s ", i, SIM->get_prefix (i));
      for (j=0; j<SIM->get_max_log_level (); j++) {
        fprintf (stderr, "%10s ", SIM->get_action_name (SIM->get_log_action (i, j)));
      }
      fprintf (stderr, "\n");
    }
  }
}

static char *log_options_prompt1 = "Enter the ID of the device to edit, or -1 to return: [-1] ";
static char *log_level_choices[] = { "ignore", "report", "ask", "fatal", "no change" };
static int log_level_n_choices_normal = 4;

void bx_log_options (int individual)
{
  if (individual) {
    int done = 0;
    while (!done) {
      bx_print_log_action_table ();
      Bit32s id, level, action;
      Bit32s maxid = SIM->get_n_log_modules ();
      if (ask_int (log_options_prompt1, -1, maxid-1, -1, &id) < 0)
	return;
      if (id < 0) return;
      fprintf (stderr, "Editing log options for the device %s\n", SIM->get_prefix (id));
      for (level=0; level<SIM->get_max_log_level (); level++) {
	char prompt[1024];
	int default_action = SIM->get_log_action (id, level);
	sprintf (prompt, "Enter action for %s event: [%s] ", SIM->get_log_level_name (level), SIM->get_action_name(default_action));
	// don't show the no change choice (choices=3)
	if (ask_menu (prompt, log_level_n_choices_normal, log_level_choices, default_action, &action)<0)
	  return;
	SIM->set_log_action (id, level, action);
      }
    }
  } else {
    // provide an easy way to set log options for all devices at once
    bx_print_log_action_table ();
    for (int level=0; level<SIM->get_max_log_level (); level++) {
      char prompt[1024];
      int action, default_action = 3;  // default to no change
      sprintf (prompt, "Enter action for %s event on all devices: [no change] ", SIM->get_log_level_name (level));
	// do show the no change choice (choices=4)
      if (ask_menu (prompt, log_level_n_choices_normal+1, log_level_choices, default_action, &action)<0)