#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/stat.h>

#include "mini-hb-menu/common.h"

extern const loaderFuncs_s loader_Ninjhax2;
extern const loaderFuncs_s loader_Rosalina;

static void (*launch_3dsx)(const char* path,
      argData_s* args, executableMetadata_s* em);

static int exec_3dsx_actual(const char* path,
      const char** args, bool appendPath)
{
   bool inited;
   bool fileExists;
   struct stat sBuff;
   argData_s newProgramArgs;
   unsigned int argChars = 0;
   unsigned int argNum   = 0;

   if (!path || path[0] == '\0')
   {
      errno = EINVAL;
      return -1;
   }

   fileExists = stat(path, &sBuff) == 0;
   if (!fileExists)
   {
      errno = ENOENT;
      return -1;
   }
   else if (S_ISDIR(sBuff.st_mode))
   {
      errno = EINVAL;
      return -1;
   }

   /* args the string functions write to the passed string, 
    * this will cause a write to read only memory,
    * so the string must be cloned */
   memset(newProgramArgs.buf, '\0', sizeof(newProgramArgs.buf));
   newProgramArgs.dst = (char*)&newProgramArgs.buf[1];
   if (appendPath)
   {
      strcpy(newProgramArgs.dst, path);
      newProgramArgs.dst += strlen(path) + 1;
      newProgramArgs.buf[0]++;
   }

   while(args[argNum])
   {
      strcpy(newProgramArgs.dst, args[argNum]);
      newProgramArgs.dst += strlen(args[argNum]) + 1;
      newProgramArgs.buf[0]++;
      argNum++;
   }

   inited         = loader_Rosalina.init();
   launch_3dsx    = loader_Rosalina.launchFile;

   if (!inited)
   {
      inited      = loader_Ninjhax2.init();
      launch_3dsx = loader_Ninjhax2.launchFile;
   }

   if (inited)
   {
      osSetSpeedupEnable(false);
      launch_3dsx(path, &newProgramArgs, NULL);
      exit(0);
   }

   /* should never be reached */
   errno = ENOTSUP;
   return -1;
}

int exec_3dsx(const char* path, const char** args)
{
   return exec_3dsx_actual(path, args, true/*appendPath*/);
}

int exec_3dsx_no_path_in_args(const char* path, const char** args)
{
   return exec_3dsx_actual(path, args, false/*appendPath*/);
}