/*
 * Copyright 2023, Vincent Douillet <vincent@vdouillet.fr>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors
 * may be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <dirent.h>
#include <kcgi.h>
#include <kcgihtml.h>
#include <string.h>

#include "browse.h"
#include "config.h"
#include "error.h"
#include "http.h"

int
browse(struct kreq * r)
{
	struct dirent  *current_dir;
	DIR            *data_dir;
	char           *dir_name;
	struct khtmlreq html;

	http_open(r, KHTTP_200);

	if (KCGI_OK != khtml_open(&html, r, 0))
		return VAULT_CGI_ERROR;

	/* build basic html page */
	khtml_elem(&html, KELEM_DOCTYPE);
	khtml_elem(&html, KELEM_HTML);
	khtml_elem(&html, KELEM_BODY);
	khtml_elem(&html, KELEM_P);
	khtml_puts(&html, "/");
	khtml_closeelem(&html, 1);

	/* list data directory content */
	data_dir = opendir(DATA_DIR);
	if (NULL == data_dir)
		return VAULT_IO_ERROR;
	khtml_elem(&html, KELEM_UL);
	while ((current_dir = readdir(data_dir)) != NULL) {
		/* ignore special . and .. folders */
		dir_name = current_dir->d_name;
		if (strcmp(".", dir_name) == 0 || strcmp("..", dir_name) == 0)
			continue;
		khtml_elem(&html, KELEM_LI);
		khtml_puts(&html, current_dir->d_name);
		khtml_closeelem(&html, 1);
	}
	khtml_close(&html);
	closedir(data_dir);

	return VAULT_SUCCESS;
}