/* $OpenBSD$ */

/*
 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>

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

#include "tmux.h"

/*
 * List all sessions.
 */

#define LIST_SESSIONS_TEMPLATE				\
	"#{session_name}: #{session_windows} windows "	\
	"(created #{t:session_created})"		\
	"#{?session_grouped, (group ,}"			\
	"#{session_group}#{?session_grouped,),}"	\
	"#{?session_attached, (attached),}"

static enum cmd_retval	cmd_list_sessions_exec(struct cmd *,
			    struct cmdq_item *);

const struct cmd_entry cmd_list_sessions_entry = {
	.name = "list-sessions",
	.alias = "ls",

	.args = { "F:f:O:r", 0, 0, NULL },
	.usage = "[-r] [-F format] [-f filter] [-O order]",

	.flags = CMD_AFTERHOOK,
	.exec = cmd_list_sessions_exec
};

static enum cmd_retval
cmd_list_sessions_exec(struct cmd *self, struct cmdq_item *item)
{
	struct args		 *args = cmd_get_args(self);
	struct session		**l;
	u_int		 	  n, i;
	struct format_tree	 *ft;
	const char		 *template, *filter;
	char			 *line, *expanded;
	int			  flag;
	struct sort_criteria	  sort_crit;

	if ((template = args_get(args, 'F')) == NULL)
		template = LIST_SESSIONS_TEMPLATE;
	filter = args_get(args, 'f');

	sort_crit.order = sort_order_from_string(args_get(args, 'O'));
	if (sort_crit.order == SORT_END && args_has(args, 'O')) {
		cmdq_error(item, "invalid sort order");
		return (CMD_RETURN_ERROR);
	}
	sort_crit.reversed = args_has(args, 'r');

	l = sort_get_sessions(&n, &sort_crit);
	for (i = 0; i < n; i++) {
		ft = format_create(cmdq_get_client(item), item, FORMAT_NONE, 0);
		format_add(ft, "line", "%u", i);
		format_defaults(ft, NULL, l[i], NULL, NULL);

		if (filter != NULL) {
			expanded = format_expand(ft, filter);
			flag = format_true(expanded);
			free(expanded);
		} else
			flag = 1;
		if (flag) {
			line = format_expand(ft, template);
			cmdq_print(item, "%s", line);
			free(line);
		}

		format_free(ft);
	}

	return (CMD_RETURN_NORMAL);
}
