/* $OpenBSD$ */

/*
* Copyright (c) 2009 Nicholas Marriott <[email protected]>
*
* 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 "tmux.h"

/*
* List panes on given window.
*/

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

static void     cmd_list_panes_server(struct cmd *, struct cmdq_item *);
static void     cmd_list_panes_session(struct cmd *, struct session *,
                   struct cmdq_item *, int);
static void     cmd_list_panes_window(struct cmd *, struct session *,
                   struct winlink *, struct cmdq_item *, int);

const struct cmd_entry cmd_list_panes_entry = {
       .name = "list-panes",
       .alias = "lsp",

       .args = { "asF:f:t:", 0, 0, NULL },
       .usage = "[-as] [-F format] [-f filter] " CMD_TARGET_WINDOW_USAGE,

       .target = { 't', CMD_FIND_WINDOW, 0 },

       .flags = CMD_AFTERHOOK,
       .exec = cmd_list_panes_exec
};

static enum cmd_retval
cmd_list_panes_exec(struct cmd *self, struct cmdq_item *item)
{
       struct args             *args = cmd_get_args(self);
       struct cmd_find_state   *target = cmdq_get_target(item);
       struct session          *s = target->s;
       struct winlink          *wl = target->wl;

       if (args_has(args, 'a'))
               cmd_list_panes_server(self, item);
       else if (args_has(args, 's'))
               cmd_list_panes_session(self, s, item, 1);
       else
               cmd_list_panes_window(self, s, wl, item, 0);

       return (CMD_RETURN_NORMAL);
}

static void
cmd_list_panes_server(struct cmd *self, struct cmdq_item *item)
{
       struct session  *s;

       RB_FOREACH(s, sessions, &sessions)
               cmd_list_panes_session(self, s, item, 2);
}

static void
cmd_list_panes_session(struct cmd *self, struct session *s,
   struct cmdq_item *item, int type)
{
       struct winlink  *wl;

       RB_FOREACH(wl, winlinks, &s->windows)
               cmd_list_panes_window(self, s, wl, item, type);
}

static void
cmd_list_panes_window(struct cmd *self, struct session *s, struct winlink *wl,
   struct cmdq_item *item, int type)
{
       struct args             *args = cmd_get_args(self);
       struct window_pane      *wp;
       u_int                    n;
       struct format_tree      *ft;
       const char              *template, *filter;
       char                    *line, *expanded;
       int                      flag;

       template = args_get(args, 'F');
       if (template == NULL) {
               switch (type) {
               case 0:
                       template = "#{pane_index}: "
                           "[#{pane_width}x#{pane_height}] [history "
                           "#{history_size}/#{history_limit}, "
                           "#{history_bytes} bytes] #{pane_id}"
                           "#{?pane_active, (active),}#{?pane_dead, (dead),}";
                       break;
               case 1:
                       template = "#{window_index}.#{pane_index}: "
                           "[#{pane_width}x#{pane_height}] [history "
                           "#{history_size}/#{history_limit}, "
                           "#{history_bytes} bytes] #{pane_id}"
                           "#{?pane_active, (active),}#{?pane_dead, (dead),}";
                       break;
               case 2:
                       template = "#{session_name}:#{window_index}."
                           "#{pane_index}: [#{pane_width}x#{pane_height}] "
                           "[history #{history_size}/#{history_limit}, "
                           "#{history_bytes} bytes] #{pane_id}"
                           "#{?pane_active, (active),}#{?pane_dead, (dead),}";
                       break;
               }
       }
       filter = args_get(args, 'f');

       n = 0;
       TAILQ_FOREACH(wp, &wl->window->panes, entry) {
               ft = format_create(cmdq_get_client(item), item, FORMAT_NONE, 0);
               format_add(ft, "line", "%u", n);
               format_defaults(ft, NULL, s, wl, wp);

               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);
               n++;
       }
}