/* Panel managing.
   Copyright (C) 1994, 1995 Janne Kukonlehto
   Copyright (C) 1995 Miguel de Icaza
   
   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 2 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, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */

#include <config.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>

#include "global.h"
#include "tty.h"
#include "mouse.h"		/* Gpm_Event */
#include "color.h"
#include "dialog.h"
#include "info.h"
#include "dir.h"		/* required by panel */
#include "panel.h"		/* for the panel structure */
#include "main.h"		/* other_panel, current_panel definitions */
#include "util.h"		/* size_trunc_len */
#include "layout.h"
#include "key.h"		/* is_idle() */
#include "mountlist.h"

#ifndef VERSION
#   define VERSION "undefined"
#endif

struct WInfo {
    Widget widget;
    int ready;
};

/* Have we called the init_my_statfs routine? */
static int initialized;
static struct my_statfs myfs_stats;

static void info_box (Dlg_head *h, struct WInfo *info)
{
    standend ();
    attrset (NORMAL_COLOR);
    widget_erase (&info->widget);
    draw_double_box (h, info->widget.y,  info->widget.x,
	             info->widget.lines, info->widget.cols);
}

static void
info_show_info (struct WInfo *info)
{
    static int i18n_adjust=0;
    static const char *file_label;
    
    struct stat st;

    if (!is_idle ())
	return;

    info_box (info->widget.parent, info);
    attrset (MARKED_COLOR);
    widget_move (&info->widget, 1, 3);
    printw (const_cast(char *, _("Midnight Commander %s")), VERSION);
    attrset (NORMAL_COLOR);
    widget_move (&info->widget, 2, 1);
    hline (ACS_HLINE|NORMAL_COLOR, info->widget.cols-2);
    if (get_current_type () != view_listing)
	return;

    if (!info->ready)
	return;
    
    my_statfs (&myfs_stats, current_panel->cwd);
    st = current_panel->dir.list [current_panel->selected].st;

    /* Print only lines which fit */
    
    if(!i18n_adjust) {
	/* This printf pattern string is used as a reference for size */
	file_label=_("File:       %s");
	i18n_adjust=strlen(file_label)+2;
    }
    
    switch (info->widget.lines-2){
	/* Note: all cases are fall-throughs */
	
    default:

    case 16:
	widget_move (&info->widget, 16, 3);
	if (myfs_stats.nfree >0 || myfs_stats.nodes > 0)
	    printw (const_cast(char *, _("Free nodes: %d (%d%%) of %d")),
		    myfs_stats.nfree,
		    myfs_stats.total
		    ? 100 * myfs_stats.nfree / myfs_stats.nodes : 0,
		    myfs_stats.nodes);
	else
	    addstr (_("No node information"));
	
    case 15:
	widget_move (&info->widget, 15, 3);
	if (myfs_stats.avail > 0 || myfs_stats.total > 0){
	    char buffer1 [6], buffer2[6];
	    size_trunc_len (buffer1, 5, myfs_stats.avail, 1);
	    size_trunc_len (buffer2, 5, myfs_stats.total, 1);
	    printw (const_cast(char *, _("Free space: %s (%d%%) of %s")), buffer1, myfs_stats.total ?
		    (int)(100 * (double)myfs_stats.avail / myfs_stats.total) : 0,
		    buffer2);
	} else
	    addstr (_("No space information"));

    case 14:
	widget_move (&info->widget, 14, 3);
	printw (const_cast(char *, _("Type:      %s ")), myfs_stats.typename ? myfs_stats.typename : _("non-local vfs"));
	if (myfs_stats.type != 0xffff && myfs_stats.type != -1)
	    printw (" (%Xh)", myfs_stats.type);

    case 13:
	widget_move (&info->widget, 13, 3);
	printw (const_cast(char *, _("Device:    %s")),
		name_trunc (myfs_stats.device, info->widget.cols - i18n_adjust));
    case 12:
	widget_move (&info->widget, 12, 3);
	printw (const_cast(char *, _("Filesystem: %s")),
		name_trunc (myfs_stats.mpoint, info->widget.cols - i18n_adjust));

    case 11:
	widget_move (&info->widget, 11, 3);
	printw (const_cast(char *, _("Accessed:  %s")), file_date (st.st_atime));
	
    case 10:
	widget_move (&info->widget, 10, 3);
	printw (const_cast(char *, _("Modified:  %s")), file_date (st.st_mtime));
	
    case 9:
	widget_move (&info->widget, 9, 3);
	printw (const_cast(char *, _("Created:   %s")), file_date (st.st_ctime));

    case 8:
	widget_move (&info->widget, 8, 3);
#if 0
#ifdef HAVE_STRUCT_STAT_ST_RDEV
	if (st.st_rdev)
	    printw ("Inode dev: major: %d, minor: %d",
		    st.st_rdev >> 8, st.st_rdev & 0xff);
	else
#endif
#endif
	{
	    char buffer[10];
	    size_trunc_len(buffer, 9, st.st_size, 0);
	    printw (const_cast(char *, _("Size:      %s")), buffer);
#ifdef HAVE_STRUCT_STAT_ST_BLOCKS
	    printw (const_cast(char *, (st.st_blocks==1) ?
		_(" (%ld block)") : _(" (%ld blocks)")), (long) st.st_blocks);
#endif
	}
	
    case 7:
	widget_move (&info->widget, 7, 3);
	printw (const_cast(char *, _("Owner:     %s/%s")), get_owner (st.st_uid),
		get_group (st.st_gid));
	
    case 6:
	widget_move (&info->widget, 6, 3);
	printw (const_cast(char *, _("Links:     %d")), (int) st.st_nlink);
	
    case 5:
	widget_move (&info->widget, 5, 3);
	printw (const_cast(char *, _("Mode:      %s (%04o)")),
		string_perm (st.st_mode), st.st_mode & 07777);
	
    case 4:
	widget_move (&info->widget, 4, 3);
	printw (const_cast(char *, _("Location:  %Xh:%Xh")), (int)st.st_dev, (int)st.st_ino);
	
    case 3:
	widget_move (&info->widget, 3, 2);
	/* .ado: fname is invalid if selected == 0 && info called from current panel */
	if (current_panel->selected){
		printw (const_cast(char *, file_label),
			name_trunc (current_panel->dir.list [current_panel->selected].fname,
				    info->widget.cols - i18n_adjust));
	} else
		addstr (_("File:       None"));
     
    case 2:
    case 1:
    case 0:
	;
    } /* switch */
}

static void info_hook (void *data)
{
    struct WInfo *info = (struct WInfo *) data;
    Widget *other_widget;
    
    other_widget = get_panel_widget (get_current_index ());
    if (!other_widget)
	return;
    if (dlg_overlap (&info->widget, other_widget))
	return;
    
    info->ready = 1;
    info_show_info (info);
}

static cb_ret_t
info_callback (struct WInfo *info, widget_msg_t msg, int parm)
{
    switch (msg) {

    case WIDGET_INIT:
	add_hook (&select_file_hook, info_hook, info);
	info->ready = 0;
	return MSG_HANDLED;

    case WIDGET_DRAW:
	info_hook (info);
	info_show_info (info);
	return MSG_HANDLED;

    case WIDGET_FOCUS:
	return MSG_NOT_HANDLED;

    case WIDGET_DESTROY:
	delete_hook (&select_file_hook, info_hook);
	return MSG_HANDLED;

    default:
	return default_proc (msg, parm);
    }
}
			   
struct WInfo *info_new ()
{
    struct WInfo *info = g_new (struct WInfo, 1);

    init_widget (&info->widget, 0, 0, 0, 0, (callback_fn)
		 info_callback, NULL);

    /* We do not want the cursor */
    widget_want_cursor (info->widget, 0);

    if (!initialized){
	initialized = 1;
	init_my_statfs ();
    }

    return info;
}