//
//

#include "cfile.h"
#include "scripting/api/objs/file.h"

#include "cfile/cfile.h"
#include "cfile/cfilesystem.h"

namespace {

int l_cf_get_path_id(const char* n_path)
{
	size_t i;
	size_t path_len = strlen(n_path);

	char *buf = (char*) vm_malloc((path_len+1) * sizeof(char));

	if (!buf)
		return CF_TYPE_INVALID;

	strcpy(buf, n_path);

	//Remove trailing slashes; avoid buffer overflow on 1-char strings
	i = path_len - 1;
	while(i < std::numeric_limits<size_t>::max() && (buf[i] == '\\' || buf[i] == '/'))
		buf[i--] = '\0';

	//Remove leading slashes
	i = 0;
	while(i < path_len && (buf[i] == '\\' || buf[i] == '/'))
		buf[i++] = '\0';

	//Use official DIR_SEPARATOR_CHAR
	for(i = 0; i < path_len; i++)
	{
		if(buf[i] == '\\' || buf[i] == '/')
			buf[i] = DIR_SEPARATOR_CHAR;
	}
	for(i = 0; i < CF_MAX_PATH_TYPES; i++)
	{
		if(Pathtypes[i].path != NULL && !stricmp(buf, Pathtypes[i].path)) {
			vm_free(buf);
			buf = NULL;
			return Pathtypes[i].index;
		}
	}

	vm_free(buf);
	buf = NULL;
	return CF_TYPE_INVALID;
}

}

namespace scripting {
namespace api {

//**********LIBRARY: CFILE
//WMC - It's on my to-do list! (Well, if I had one anyway)
//WMC - Did it. I had to invent a to-do list first, though.
//Ironically, I never actually put this on it.
ADE_LIB(l_CFile, "CFile", "cf", "CFile FS2 filesystem access");

ADE_FUNC(deleteFile, l_CFile, "string Filename, string Path", "Deletes given file. Path must be specified. Use a slash for the root directory.", "boolean", "True if deleted, false")
{
	char *n_filename = NULL;
	const char *n_path = "";
	if(!ade_get_args(L, "ss", &n_filename, &n_path))
		return ade_set_error(L, "b", false);

	int path = CF_TYPE_INVALID;
	if(n_path != NULL && strlen(n_path))
		path = l_cf_get_path_id(n_path);

	if(path == CF_TYPE_INVALID)
		return ade_set_error(L, "b", false);

	return ade_set_args(L, "b", cf_delete(n_filename, path) != 0);
}

ADE_FUNC(fileExists, l_CFile, "string Filename, [string Path = \"\", boolean CheckVPs = false]", "Checks if a file exists. Use a blank string for path for any directory, or a slash for the root directory.", "boolean", "True if file exists, false or nil otherwise")
{
	char *n_filename = NULL;
	const char *n_path = "";
	bool check_vps = false;
	if(!ade_get_args(L, "s|sb", &n_filename, &n_path, &check_vps))
		return ADE_RETURN_NIL;

	int path = CF_TYPE_ANY;
	if(n_path != NULL && strlen(n_path))
		path = l_cf_get_path_id(n_path);

	if(path == CF_TYPE_INVALID)
		return ade_set_error(L, "b", false);

	if(!check_vps)
		return ade_set_args(L, "b", cf_exists(n_filename, path) != 0);
	else
		return ade_set_args(L, "b", cf_exists_full(n_filename, path ) != 0);
}

ADE_FUNC(openFile, l_CFile, "string Filename, [string Mode=\"r\", string Path = \"\"]",
		 "Opens a file. 'Mode' uses standard C fopen arguments. Use a blank string for path for any directory, or a slash for the root directory."
			 "Be EXTREMELY CAREFUL when using this function, as you may PERMANENTLY delete any file by accident",
		 "file",
		 "File handle, or invalid file handle if the specified file couldn't be opened")
{
	char *n_filename = NULL;
	const char *n_mode = "r";
	const char *n_path = "";
	if(!ade_get_args(L, "s|ss", &n_filename, &n_mode, &n_path))
		return ade_set_error(L, "o", l_File.Set(NULL));

	int type = CFILE_NORMAL;

	int path = CF_TYPE_ANY;
	if(n_path != NULL && strlen(n_path))
		path = l_cf_get_path_id(n_path);

	if(path == CF_TYPE_INVALID)
		return ade_set_error(L, "o", l_File.Set(NULL));

	CFILE *cfp = cfopen(n_filename, n_mode, type, path);

	if(!cf_is_valid(cfp))
		return ade_set_error(L, "o", l_File.Set(NULL));

	return ade_set_args(L, "o", l_File.Set(cfp));
}

ADE_FUNC(openTempFile, l_CFile, NULL, "Opens a temp file that is automatically deleted when closed", "file", "File handle, or invalid file handle if tempfile couldn't be created")
{
	return ade_set_args(L, "o", l_File.Set(ctmpfile()));
}

ADE_FUNC(renameFile, l_CFile, "string CurrentFilename, string NewFilename, string Path", "Renames given file. Path must be specified. Use a slash for the root directory.", "boolean", "True if file was renamed, otherwise false")
{
	char *n_filename = NULL;
	char *n_new_filename = NULL;
	const char *n_path = "";
	if(!ade_get_args(L, "ss|s", &n_filename, &n_new_filename, &n_path))
		return ade_set_error(L, "b", false);

	int path = CF_TYPE_INVALID;
	if(n_path != NULL && strlen(n_path))
		path = l_cf_get_path_id(n_path);

	if(path == CF_TYPE_INVALID)
		return ade_set_error(L, "b", false);

	return ade_set_args(L, "b", cf_rename(n_filename, n_new_filename, path) != 0);
}

}
}