#!/usr/bin/perl

use strict;
use warnings;

use FindBin;
use lib "$FindBin::Bin/../perllib";

use Gtk2 -init;
use Glib qw(TRUE FALSE);
use Arch::Run;

# use "/usr/share/doc/*" on slow disks
my @dirs = @ARGV ? @ARGV : glob('/usr/share/*');

my $window = Gtk2::Window->new;
my $scroll = Gtk2::ScrolledWindow->new;
my $text = Gtk2::TextView->new;
my $pbar = Gtk2::ProgressBar->new;
my $vbox = Gtk2::VBox->new;
$vbox->pack_start($scroll, TRUE, TRUE, 0);
$vbox->pack_start($pbar, FALSE, FALSE, 0);
$scroll->add($text);
$window->add($vbox);

$window->signal_connect(destroy => sub { Gtk2->main_quit });
$window->set_default_size(300, 400); $window->show_all;

sub append_text {
	my $str = shift;
	$text->get_buffer->insert($text->get_buffer->get_end_iter, $str);
}

my $keep = 1;
Glib::Timeout->add(50, sub { $pbar->pulse; Arch::Run::poll(0); $keep });

Arch::Run::run_async(
	command => [ 'du', '-hs', @dirs ],
	mode    => Arch::Run::LINES,
	datacb  => sub { append_text($_[0]); },
	exitcb  => sub { $keep = 0 },
);

Gtk2->main;