#!/usr/bin/perl

# DrakFloppy
# $Id: drakfloppy 233182 2008-01-23 12:16:18Z tv $
# 
# Copyright (C) 2001-2008 Mandriva
# Yves Duret
# Thierry Vignaud
#
# 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, 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., 59 Temple Place - Suite 330, Boston, 
# MA 02111-1307, USA.


use strict;
use diagnostics;
use lib qw(/usr/lib/libDrakX);

use standalone; #- warning, standalone must be loaded very first, for 'explanations'
use common;
use mygtk2 qw(gtknew);
use ugtk2 qw(:create :dialogs :helpers :wrappers);
use detect_devices;

$ugtk2::wm_icon = "/usr/share/mcc/themes/default/drakfloppy-mdk.png";
require_root_capability();

my $window = ugtk2->new(N("Boot Floppy"));
unless ($::isEmbedded) {
    $window->{rwindow}->signal_connect(delete_event => sub { ugtk2->exit(0) });
    $window->{rwindow}->set_border_width(5);
    
    ### menus definition
    # the menus are not shown but they provides shiny shortcut like C-q
    create_factory_menu($window->{rwindow}, ( 
                                             { path => N("/_File"), item_type => '<Branch>' },
                                             { path => N("/File/_Quit"), accelerator => N("<control>Q"), callback => sub { ugtk2->exit(0) } },
                                            )
                       );
}


my (@modules, @temp_modules, %buttons, %options, $tree_model, $tree, $list_model, $list);

my $conffile = "/etc/sysconfig/drakfloppy";

# we must be robust against config file parsing
eval { %options = getVarsFromSh($conffile) };
@modules  = split(' ', $options{MODULES});


######## up part

# device part
my $device_combo = gtknew('ComboBox', list => [ map { "/dev/$_" } detect_devices::floppies_dev() ]);
$device_combo->set_active(0);

# kernel part
my $kernel_combo = gtknew('ComboBox', text => chomp_(`uname -r`), list => [ sort grep { !/^\.\.?$/ } sort(all("/lib/modules")) ]);


##########################################################

### main window
$window->{window}->add(
                       gtknew('VBox', children => [
                                if_($::isEmbedded, 0, gtknew('Label', text => N("Boot disk creation"))),
                                0, gtknew('Frame', text => N("General"), child => 
                                          gtknew('VBox', children_tight => [
                                                    gtknew('HBox', homogenous => 1, children_tight => [
                                                              gtknew('Label', text => N("Device")),
                                                              $device_combo,
                                                              gtknew('Button', text => N("Default"), 
                                                                                clicked => sub { $device_combo->entry->set_text("/dev/fd0") }),
                                                             ]),
                                                    gtknew('HBox', homogenous => 1, children_tight => [
                                                              gtknew('Label', text => N("Kernel version")),
                                                              $kernel_combo,
                                                              gtknew('Button', text => N("Default"), 
                                                                                clicked => sub { 
                                                                                    $kernel_combo->entry->set_text(chomp_(`uname -r`));
                                                                                }),
                                                             ]),
                                                   ]),
                                         ),
                                1, gtknew('VBox'),
                                0, create_okcancel({
                                                    cancel_clicked => sub { ugtk2->exit(0) },
                                                    ok_clicked  => \&build_it,
                                                   },
                                                   undef, undef, '',
                                                   [ N("Preferences"), \&pref_dialog, 0 ],
                                                  ),
                               ]),
                      );

$window->{rwindow}->show_all;

$window->main;
ugtk2->exit(0);


my $remove_but;

sub pref_dialog() {
    my $dialog = gtkset_modal(gtkset_size_request(_create_dialog(N("Advanced preferences")), 600, -1), 1);
    $dialog->set_transient_for($window->{real_window});
    

    # Create root tree:
    $tree_model = Gtk2::TreeStore->new(("Glib::String") x 2, "Glib::Int");
    $tree = Gtk2::TreeView->new_with_model($tree_model);
    $tree->set_headers_visible(0);
    $tree->append_column(Gtk2::TreeViewColumn->new_with_attributes(undef, Gtk2::CellRendererText->new, 'text' => 0));
    $tree->signal_connect('row-expanded', \&expand_tree);
    $tree->get_selection->signal_connect('changed' => \&selected_tree);

    # Create modules list:
    $list_model = Gtk2::ListStore->new(("Glib::String") x 3); # relative path, size, (hidden full path)
    $list  = Gtk2::TreeView->new_with_model($list_model);
    each_index {
        $list->append_column(my $col = Gtk2::TreeViewColumn->new_with_attributes($_, Gtk2::CellRendererText->new, 'text' => $::i));
        $col->set_sort_column_id($::i);
        $col->set_min_width((200, 50)[$::i]);
    } (N("Module name"), N("Size"));
    
    gtkpack_($dialog->vbox,
             0, gtknew('Frame', text => N("Mkinitrd optional arguments"), child => 
                       gtknew('VBox', spacing => 5, children_tight => [
                                 $buttons{force} = gtknew('CheckButton', text => N("force")),
                                 $buttons{raid} = gtknew('CheckButton', text => N("omit raid modules")),
                                 $buttons{needed} = gtknew('CheckButton', text => N("if needed")),
                                 $buttons{scsi} = gtknew('CheckButton', text => N("omit scsi modules")),
                                ]),
                      ),
             1, gtknew('Frame', text => N("Add a module"), child => 
                       create_hpaned(
                                     gtkset_size_request(
                                                         gtknew('ScrolledWindow', child => $tree),
                                                         200, $::isEmbedded ? 0 : 175),
                                     gtknew('VBox', children => [
                                              1, gtkadd(Gtk2::ScrolledWindow->new,
                                                        $list
                                                       ),
                                              0, $remove_but = gtknew('Button', text => N("Remove a module"), 
                                                                   clicked => sub {
                                                                       my $iter = ($list->get_selection->get_selected)[1];
                                                                       return unless $iter;
                                                                       my $removed = $list_model->get($iter, 2);
                                                                       $list_model->remove($iter);
                                                                       @temp_modules = grep { $_ ne $removed } @temp_modules;
                                                                       $remove_but->set_sensitive(scalar @temp_modules);
                                                                   }),
                                             ]),
                                    ),
                      ),
                                      );

    # restore values:
    $buttons{$_}->set_active($options{$_}) foreach keys %buttons;
    fill_tree($kernel_combo->entry->get_text);
    foreach my $module (@modules) {
        my $full_path = join('/', "/lib/modules", $kernel_combo->entry->get_text, $module);
        $full_path =~ s/\.(ko|o)(|.gz)//;
        my $size = get_file_size(glob_("$full_path.*"));
        $list_model->append_set(map_index { $::i => $_ } $module, $size, $full_path);
    }
    
    $remove_but->set_sensitive(scalar @modules);
    @temp_modules = ();

    gtkadd($dialog->action_area,
           create_okcancel({
                            cancel_clicked => sub { $dialog->destroy },
                            ok_clicked => sub { 
                                # save values:
                                $options{$_} = $buttons{$_}->get_active foreach keys %buttons;
                                my $val;
                                @modules = ();
                                $list_model->foreach(sub {
                                                         my ($model, $_path, $iter) = @_;
                                                         push @modules, $model->get($iter, 0);
                                                         return 0;
                                                     }, $val);
                                $dialog->destroy;
                            },
                           }),
          );
    $dialog->show_all;
    $dialog->run;
}

#-------------------------------------------------------------
# tree functions
#-------------------------------------------------------------
### Subroutines

sub fill_tree {
    my ($root_dir) = @_;
    $root_dir = "/lib/modules/" . $root_dir;
    # Create root tree item widget
    my $parent_iter = $tree_model->append_set(undef, [ 0 => $root_dir, 1 => $root_dir, 2 => has_sub_trees($root_dir) ]);

    # Create the subtree
    expand_tree($tree, $parent_iter, $tree_model->get_path($parent_iter)) if has_sub_trees($root_dir);
}


# Called whenever an item is clicked on the tree widget.
sub selected_tree {
    my ($select) = @_;
    my ($model, $iter) = $select->get_selected;
    $remove_but->set_sensitive($model && $iter);

    return unless $model;       # no real selection
    my $file = $model->get($iter, 1);
    
    return if -d $file;

    my $size = get_file_size($file);

    return if member($file, @temp_modules);
    push @temp_modules, $file;
    $list_model->append_set([ 0 => stripit($file), 1 => $size, 2 => $file ]);
}

# Callback for expanding a tree - find subdirectories, files and add them to tree
sub expand_tree {
    my ($tree, $parent_iter, $path) = @_;
    return if !$tree || !$parent_iter;
    my $dir   = $tree_model->get($parent_iter, 1);

    #- if we're hinted to be expandable
    if ($tree_model->get($parent_iter, 2)) {
        #- hackish: if first child has '' as name, then we need to expand on the fly
        if ($tree_model->iter_has_child($parent_iter)) {
            my $child = $tree_model->iter_children($parent_iter);
            # BUG: ->iter_children return invalid iterators !!! thus the dummy empty line
            $tree_model->remove($child);
        }
        # do not refill the parent anymore
        $tree_model->set($parent_iter, 2 => 0);
        
        foreach my $dir_entry (sort(all($dir))) {
            my $entry_path = $dir . "/" . $dir_entry;
            if (-d $entry_path || $dir_entry =~ /\.(k|)o(\.gz)?$/) {
                $entry_path =~ s|//|/|g;
                my $iter = $tree_model->append_set($parent_iter, [ 0 => $dir_entry, 1 => $entry_path, 2 => has_sub_trees($entry_path) ]);
                #- hackery for partial displaying of trees, used in rpmdrake:
                #- if leaf is void, we may create the parent and one child (to have the [+] in front of the parent in the ctree)
                #- though we use '' as the label of the child; then rpmdrake will connect on tree_expand, and whenever
                #- the first child has '' as the label, it will remove the child and add all the "right" children
                $tree_model->append_set($iter, [ 0 => '' ]) if has_sub_trees($entry_path);
            }
        }
    }
    $tree->expand_row($path, 0);
}



#-------------------------------------------------------------
# the function
#-------------------------------------------------------------
sub build_it() {
    my $initrd_args = join(' ',
                           if_($options{force},  "-f"),
                           if_($options{needed}, "--ifneeded"),
                           if_($options{scsi},   "--omit-scsi-modules"),
                           if_($options{raid},   "--omit-raid-modules"),
                           if_(@modules, map { my $i = $_; $i =~ s!.*/!!; "--with=$i" } @modules),
                          );
    $initrd_args = qq(--mkinitrdargs "$initrd_args") if $initrd_args;
    my $co = join(' ', "/sbin/mkbootdisk --noprompt --verbose --device", $device_combo->entry->get_text, $initrd_args);
    $options{MODULES} = join(' ', @modules);
    setVarsInSh($conffile, \%options);

    $co .= " " . $kernel_combo->entry->get_text;
    $co .= " 2>&1 |";
    $::testing or warn_dialog(N("Warning"), N("Be sure a media is present for the device %s",  $device_combo->entry->get_text)) or return;
    # we test if the media is present
  test:
    my $a = "dd count=1 if=/dev/null of=" . $device_combo->entry->get_text . " 2>&1";
    my $b = `$a`;
    if (!$::testing && $b =~ /dd/) {
        err_dialog(N("Error"), N("There is no medium or it is write-protected for device %s.\nPlease insert one.", $device_combo->entry->get_text), { cancel => 1 }) ? goto test : return 0;
    }
  
    open(my $STATUS, $co) or do { err_dialog(N("Error"), N("Unable to fork: %s", $!)); return };
    my $log = join('', <$STATUS>);
    if (close $STATUS) {
        info_dialog(N("Floppy creation completed"), N("The creation of the boot floppy has been successfully completed \n"));
        ugtk2->exit;
    } else {
        err_dialog(N("Error"),
                   #-PO: Do not alter the <span ..> and </span> tags
                   N("Unable to properly close mkbootdisk:\n\n<span foreground=\"Red\"><tt>%s</tt></span>", $log), { use_markup => 1 });
    }
  
    return 0;
}

sub get_file_size {
    my ($file) = @_;
    (lstat($file))[7];
}

####
# This is put at the end of the file because any translatable string
# appearing after this will not be found by xgettext, and so wont end in
# the pot file...
####

# Test whether a directory has subdirectories
sub has_sub_trees {
    my ($dir) = @_;
    
    foreach my $file (glob_("$dir/*")) {
        return 1 if -d $file || $file =~ /\.(k|)o(\.gz)?$/;
    }
    
    return 0;
}

sub stripit {
    my ($file) = @_;
    $file =~ s|/lib/modules/.*?/||g;
    $file;
}