/*
   Unix SMB/CIFS implementation.
   SWAT language handling
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.

   Created by Ryo Kawahara <rkawa@lbe.co.jp> 
*/

#include "includes.h"
#include "web/swat_proto.h"
#include "intl/lang_tdb.h"
#include "system/filesys.h"

/*
  during a file download we first check to see if there is a language
  specific file available. If there is then use that, otherwise 
  just open the specified file
*/
int web_open(const char *fname, int flags, mode_t mode)
{
	char *p = NULL;
	char *lang = lang_tdb_current();
	int fd;
	if (lang) {
		if (asprintf(&p, "lang/%s/%s", lang, fname) != -1) {
			fd = open(p, flags, mode);
			free(p);
			if (fd != -1) {
				return fd;
			}
		}
	}

	/* fall through to default name */
	return open(fname, flags, mode);
}


struct pri_list {
	float pri;
	char *string;
};

static int qsort_cmp_list(struct pri_list *a, struct pri_list *b)
{
	if (a->pri > b->pri) return -1;
	if (a->pri < b->pri) return 1;
	return 0;
}

/*
  choose from a list of languages. The list can be comma or space
  separated
  Keep choosing until we get a hit 
  Changed to habdle priority -- Simo
*/

void web_set_lang(const char *lang_string)
{
	char **lang_list, **count;
	struct pri_list *pl;
	int lang_num, i;

	/* build the lang list */
	lang_list = str_list_make_v3(talloc_tos(), lang_string, ", \t\r\n");
	if (!lang_list) return;
	
	/* sort the list by priority */
	lang_num = 0;
	count = lang_list;
	while (*count && **count) {
		count++;
		lang_num++;
	}
	pl = SMB_MALLOC_ARRAY(struct pri_list, lang_num);
	if (!pl) {
		return;
	}

	for (i = 0; i < lang_num; i++) {
		char *pri_code;
		if ((pri_code=strstr(lang_list[i], ";q="))) {
			*pri_code = '\0';
			pri_code += 3;
			sscanf(pri_code, "%f", &(pl[i].pri));
		} else {
			pl[i].pri = 1;
		}
		pl[i].string = SMB_STRDUP(lang_list[i]);
	}
	TALLOC_FREE(lang_list);

	TYPESAFE_QSORT(pl, lang_num, qsort_cmp_list);

	/* it's not an error to not initialise - we just fall back to 
	   the default */

	for (i = 0; i < lang_num; i++) {
		if (lang_tdb_init(pl[i].string)) break;
	}

	for (i = 0; i < lang_num; i++) {
		SAFE_FREE(pl[i].string);
	}
	SAFE_FREE(pl);

	return;
}
