#!/usr/bin/perl

# XFdrake
# Copyright (C) 1999-2002 MandrakeSoft (pixel@mandrakesoft.com)
#
# 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 lib qw(/usr/lib/libDrakX);

use standalone;     #- warning, standalone must be loaded very first, for 'explanations'

use Xconfig::main;
use Xconfig::xfree;
use Xconfig::default;
use interactive;
use modules;
use common;
use any;
use c;

local $_ = join '', @ARGV;

my ($configure_this) = grep { !/^-/ } @ARGV;
$configure_this = 'resolution' if $0 =~ /Xdrakres/;
$configure_this ||= 'everything';

{ 
    my $in = 'interactive'->vnew('su', 'X');

    modules::mergein_conf('/etc/modules.conf') if -r '/etc/modules.conf';

    my $rc = do {
	my $options = { allowNVIDIA_rpms => $in->do_pkgs->check_kernel_module_packages('NVIDIA_kernel', 'NVIDIA_GLX'),
			allowATI_rpms => $in->do_pkgs->check_kernel_module_packages('ATI_kernel', 'ATI_GLX'),
			allowFB => listlength(cat_("/proc/fb")) };

	if ($configure_this eq 'everything') {
	    check_XFree($in);
	    Xconfig::main::configure_everything_or_configure_chooser($in, $options, $::auto);
	} elsif ($configure_this eq 'auto_install') {
	    Xconfig::main::configure_everything_auto_install(Xconfig::default::configure(), $in->do_pkgs, {}, $options);
	} elsif ($configure_this eq 'monitor') {
	    Xconfig::main::configure_monitor($in, Xconfig::xfree->read);
	} elsif ($configure_this eq 'resolution') {
	    Xconfig::main::configure_resolution($in, Xconfig::xfree->read);
	}
    };
    ask_for_X_restart($in) if $rc;

    $in->exit(0);
}

sub check_XFree {
    my ($in) = @_;

    #- set the standard configuration
    foreach ('XF86Config', 'XF86Config-4') {
	my $f = "/etc/X11/$_";
	symlinkf("$_.standard", $f) if -l $f && -e "$f.standard";
    }

    my $f = "/usr/X11R6/lib/X11/rgb.txt"; #- this one is on all platform
    -e $f or $in->do_pkgs->install('XFree86', 'XFree86-75dpi-fonts');
    -e $f or die "install XFree86 first!\n";

    system("mount /proc 2>/dev/null"); # ensure /proc is mounted for pci probing
}

sub ask_for_X_restart {
    my ($in) = @_;

    $::isStandalone && $in->isa('interactive::gtk') or return;

    my ($wm, $pid) = any::running_window_manager();

    if (!$wm) {
    	$in->ask_warn('', N("Please log out and then use Ctrl-Alt-BackSpace"));
	return;
    }

    $in->ask_okcancel('', N("You need to log out and back in again for changes to take effect"), 1) or return;

    if (fork()) {
	any::ask_window_manager_to_logout($wm);
	return;
    }
    
    open STDIN, "</dev/zero";
    open STDOUT, ">/dev/null";
    open STDERR, ">&STDERR";
    c::setsid();
    exec qw(perl -e), q(
	my ($wm, $pid) = @ARGV;
	my $nb;
	for ($nb = 30; $nb && -e "/proc/$pid"; $nb--) { sleep 1 }
	system("killall X") if $nb;
    ), $wm, $pid;
}