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

#include "amigaos4.h"

static char *getFullPath(const char *path)
{
  char *appPath = malloc(sizeof(char) * MAX_DOS_NAME);
  BPTR pathLock = Lock(path, SHARED_LOCK);
  if (pathLock)
  {
	  NameFromLock(pathLock, appPath, sizeof(char) * MAX_DOS_NAME);
    UnLock(pathLock);

	  return appPath;
  }
  return NULL;
}

static char *getCurrentPath(void)
{
  char *appPath = malloc(sizeof(char) * MAX_DOS_NAME);
  BPTR pathLock = GetCurrentDir();
  if (pathLock)
  {
	  NameFromLock(pathLock, appPath, sizeof(char) * MAX_DOS_NAME);
	  return appPath;
  }
  return NULL;
}

char *_fullpath(const char *path)
{
  static char prvPath[MAX_DOS_NAME];
  static char result[MAX_DOS_NAME];

  if (!strcmp(path, prvPath))
  {
    return result;
  }

  strcpy(prvPath, path);

  if (!strcmp(path, "./lite"))
  {
    // TODO: Add code to get the name of the executable
    strcpy(result, getFullPath("PROGDIR:lite"));
    return result;
  }

  if (!strcmp(path, "."))
  {
    strcpy(result, getCurrentPath());
    return result;
  }

  strcpy(result, getFullPath(path));
  return result;
}