/* $OpenBSD: cmd-list-sessions.c,v 1.36 2026/02/27 08:25:12 nicm Exp $ */

/*
 * 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);
}