#!/usr/bin/perl

package Verby::Config::Source::Prompt;
use Moose;

extends qw/Verby::Config::Source/;

our $VERSION = "0.05";

has questions => (
	isa => "Hashref",
	is  => "ro",
	required => 1,
);

has asap => (
	isa => "Bool",
	is  => "ro",
	default => 0,
);

sub BUILD {
	my $self = shift;
	$self->prompt_all if $self->asap;
}

# this is a copy of ExtUtils::MakeMaker::prompt, hacked up for Verby
# it's stolen because EUMM takes 1 full second to load
sub prompt ($;$) {
	#my($mess, $def) = @_;
	my ($mess, $key) = @_; # no notion of a default - if it's there another config source knows about it already
	#Carp::confess("prompt function called without an argument") 
	Log::Dispatch::Config->instance->log_and_die(level => "error", message => "prompt function called without an argument") 
		unless defined $mess;

	#my $isa_tty = -t STDIN && (-t STDOUT || !(-f STDOUT || -c STDOUT)) ;
	Log::Dispatch::Config->instance->log_and_die(level => "error", message => "Can't prompt for '$key' - STDIN is not a terminal")
		unless -t STDIN && (-t STDOUT || !(-f STDOUT || -c STDOUT)) ;

	# defaults are no longer relevant
	#my $dispdef = defined $def ? "[$def] " : " ";
	#$def = defined $def ? $def : "";

	local $|=1;
	local $\;
	#print "$mess $dispdef";
	print $mess;

	#my $ans;
	#if ($ENV{PERL_MM_USE_DEFAULT} || (!$isa_tty && eof STDIN)) {
	#	print "$def\n";
	#}
	#else {
	#$ans = <STDIN>;
	#if( defined $ans ) {
	if (defined(my $ans = <STDIN>)) {
		chomp $ans;
		return $ans;
	}
	else { # user hit ctrl-D
		print "\n";
		Log::Dispatch::Config->instance->log_and_die(level => "error", message => "Can't proceed - value for '$key' unknown");
	}
	#}

	#return (!defined $ans || $ans eq '') ? $def : $ans;
}

sub get_key {
	my ( $self, $key ) = @_;

	my $prompt = $self->questions->{$key};

	Log::Dispatch::Config->instance->log_and_die(level => "error", message => "Configuration key '$key' is unresolvable") unless $prompt;

	return prompt($prompt, $key);
}

sub prompt_all {
	my $self = shift;

	(tied %{ $self->data })->FETCH($_) for (keys %{ $self->questions });
}

__PACKAGE__

__END__

=pod

=head1 NAME

Verby::Config::Source::Prompt - 

=head1 SYNOPSIS

	use Verby::Config::Source::Prompt;

=head1 DESCRIPTION

=head1 METHODS

=over 4

=item B<new>

=item B<prompt>

=item B<prompt_all>

=item B<get_key>

=back

=head1 BUGS

None that we are aware of. Of course, if you find a bug, let us know, and we will be sure to fix it. 

=head1 CODE COVERAGE

We use B<Devel::Cover> to test the code coverage of the tests, please refer to COVERAGE section of the L<Verby> module for more information.

=head1 SEE ALSO

=head1 AUTHOR

Yuval Kogman, E<lt>nothingmuch@woobling.orgE<gt>

=head1 COPYRIGHT AND LICENSE

Copyright 2005-2008 by Infinity Interactive, Inc.

L<http://www.iinteractive.com>

This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself. 

=cut