#!/usr/bin/perl -w
# This file was preprocessed, do not edit!


package Debconf::FrontEnd::Passthrough;
use strict;
use Carp;
use IO::Socket;
use IO::Handle;
use Debconf::FrontEnd;
use Debconf::Element;
use Debconf::Element::Select;
use Debconf::Element::Multiselect;
use Debconf::Log qw(:all);
use Debconf::Encoding;
use base qw(Debconf::FrontEnd);

my ($READFD, $WRITEFD, $SOCKET);
if (defined $ENV{DEBCONF_PIPE}) {
        $SOCKET = $ENV{DEBCONF_PIPE};
} elsif (defined $ENV{DEBCONF_READFD} && defined $ENV{DEBCONF_WRITEFD}) {
        $READFD = $ENV{DEBCONF_READFD};
        $WRITEFD = $ENV{DEBCONF_WRITEFD};
} else {
        die "Neither DEBCONF_PIPE nor DEBCONF_READFD and DEBCONF_WRITEFD were set\n";
}


sub init {
	my $this=shift;

        if (defined $SOCKET) {
                $this->{readfh} = $this->{writefh} = IO::Socket::UNIX->new(
		        Type => SOCK_STREAM,
		        Peer => $SOCKET
	        ) || croak "Cannot connect to $SOCKET: $!";
        } else {
                $this->{readfh} = IO::Handle->new_from_fd(int($READFD), "r") || croak "Failed to open fd $READFD: $!";
                $this->{writefh} = IO::Handle->new_from_fd(int($WRITEFD), "w") || croak "Failed to open fd $WRITEFD: $!";
        }

	binmode $this->{readfh}, ":utf8";
	binmode $this->{writefh}, ":utf8";

	$this->{readfh}->autoflush(1);
	$this->{writefh}->autoflush(1);
	
	$this->SUPER::init(@_);
	$this->interactive(1);
	$this->need_tty(0);
}


sub talk {
	my $this=shift;
	my $command=join(' ', map { Debconf::Encoding::to_Unicode($_) } @_);
	my $reply;
	
	my $readfh = $this->{readfh} || croak "Broken pipe";
	my $writefh = $this->{writefh} || croak "Broken pipe";
	
	debug developer => "----> $command";
	print $writefh $command."\n";
	$writefh->flush;
	$reply = <$readfh>;
	chomp($reply);
	debug developer => "<---- $reply";
	my ($tag, $val) = split(' ', $reply, 2);
	$val = '' unless defined $val;
	$val = Debconf::Encoding::convert("UTF-8", $val);

	return ($tag, $val) if wantarray;
	return $tag;
}


sub makeelement
{
	my $this=shift;
	my $question=shift;

	my $type=$question->type;
	if ($type eq "select" || $type eq "multiselect") {
		$type=ucfirst($type);
		return "Debconf::Element::$type"->new(question => $question);
	} else {
		return Debconf::Element->new(question => $question);
	}
}


sub capb_backup
{
	my $this=shift;
	my $val = shift;

	$this->{capb_backup} = $val;
	$this->talk('CAPB', 'backup') if $val;
}


sub capb
{
	my $this=shift;
	my $ret;
	return $this->{capb} if exists $this->{capb};

	($ret, $this->{capb}) = $this->talk('CAPB');
	return $this->{capb} if $ret eq '0';
}


sub title
{
	my $this = shift;
	return $this->{title} unless @_;
	my $title = shift;

	$this->{title} = $title;
	$this->talk('TITLE', $title);
}


sub settitle
{
	my $this = shift;
	my $question = shift;

	$this->{title} = $question->description;

	my $tag = $question->template->template;
	my $type = $question->template->type;
	my $desc = $question->description;
	my $extdesc = $question->extended_description;

	$this->talk('DATA', $tag, 'type', $type);

	if ($desc) {
		$desc =~ s/\n/\\n/g;
		$this->talk('DATA', $tag, 'description', $desc);
	}

	if ($extdesc) {
		$extdesc =~ s/\n/\\n/g;
		$this->talk('DATA', $tag, 'extended_description', $extdesc);
	}

	$this->talk('SETTITLE', $tag);
}


sub go {
	my $this = shift;

	my @elements=grep $_->visible, @{$this->elements};
	foreach my $element (@elements) {
		my $question = $element->question;
		my $tag = $question->template->template;
		my $type = $question->template->type;
		my $desc = $question->description;
		my $extdesc = $question->extended_description;
		my $default;
		if ($type eq 'select') {
			$default = $element->translate_default;
		} elsif ($type eq 'multiselect') {
			$default = join ', ', $element->translate_default;
		} else {
			$default = $question->value;
		}

                $this->talk('DATA', $tag, 'type', $type);

		if ($desc) {
			$desc =~ s/\n/\\n/g;
			$this->talk('DATA', $tag, 'description', $desc);
		}

		if ($extdesc) {
			$extdesc =~ s/\n/\\n/g;
			$this->talk('DATA', $tag, 'extended_description',
			            $extdesc);
		}

		if ($type eq "select" || $type eq "multiselect") {
			my $choices = $question->choices;
			$choices =~ s/\n/\\n/g if ($choices);
			$this->talk('DATA', $tag, 'choices', $choices);
		}

		$this->talk('SET', $tag, $default) if $default ne '';

		my @vars=$Debconf::Db::config->variables($question->{name});
		for my $var (@vars) {
			my $val=$Debconf::Db::config->getvariable($question->{name}, $var);
			$val='' unless defined $val;
			$this->talk('SUBST', $tag, $var, $val);
		}

		$this->talk('INPUT', $question->priority, $tag);
	}

	if (@elements && (scalar($this->talk('GO')) eq "30") && $this->{capb_backup}) {
		return;
	}
	
	foreach my $element (@{$this->elements}) {
		if ($element->visible) {
			my $tag = $element->question->template->template;
			my $type = $element->question->template->type;

			my ($ret, $val)=$this->talk('GET', $tag);
			if ($ret eq "0") {
				if ($type eq 'select') {
					$element->value($element->translate_to_C($val));
				} elsif ($type eq 'multiselect') {
					$element->value(join(', ', map { $element->translate_to_C($_) } split(', ', $val)));
				} else {
					$element->value($val);
				}
				debug developer => "Got \"$val\" for $tag";
			}
		} else {
			$element->show;
		}
	}

	return 1;
}


sub progress_data {
	my $this=shift;
	my $subcommand=shift;
	my $question=shift;

	my $tag=$question->template->template;
	my $type=$question->template->type;
	my $desc=$question->description;
	my $extdesc=$question->extended_description;

	$this->talk('DATA', $tag, 'type', $type);

	if ($desc) {
		$desc =~ s/\n/\\n/g;
		$this->talk('DATA', $tag, 'description', $desc);
	}

	if ($extdesc) {
		$extdesc =~ s/\n/\\n/g;
		$this->talk('DATA', $tag, 'extended_description', $extdesc);
	}
}

sub progress_start {
	my $this=shift;

	$this->progress_data('START', $_[2]);
	return $this->talk('PROGRESS', 'START', $_[0], $_[1], $_[2]->template->template);
}

sub progress_set {
	my $this=shift;

	return $this->talk('PROGRESS', 'SET', $_[0]);
}

sub progress_step {
	my $this=shift;

	return $this->talk('PROGRESS', 'STEP', $_[0]);
}

sub progress_info {
	my $this=shift;

	$this->progress_data('INFO', $_[0]);
	return $this->talk('PROGRESS', 'INFO', $_[0]->template->template);
}

sub progress_stop {
	my $this=shift;

	return $this->talk('PROGRESS', 'STOP');
}


1

