#!/usr/bin/perl -w
use v5.14;

use Gruntmaster::Data;

use IO::Prompter [ -style => 'bold', '-stdio', '-verbatim' ];
use File::Slurp qw/read_file/;
use Term::ANSIColor qw/RED RESET/;
use Getopt::Long qw/:config require_order/;

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

my $contest;

sub cmd_help{
	exec perldoc => $0
}

sub prompt_file{
	my ($meta, $name, $prefix) = @_;
	my $filename = prompt '$prefix filename', -complete => 'filenames';
	$meta->{files}{$name}{content} = read_file $filename;
	$meta->{files}{$name}{format} = prompt '$prefix format', -menu => [qw/C CPP MONO JAVA PASCAL PERL PYTHON/];
	$meta->{files}{$name}{name} = prompt "$prefix filename [$filename]", -default => $filename;
}

sub cmd_add{
	my $id = shift;
	my $name = prompt 'Problem name';
	my $private = prompt('Private?', '-yn') eq 'y';
	my $author = prompt 'Problem author (full name)';
	my $owner = prompt 'Problem owner (username)';
	my $level = prompt 'Problem level', -menu => "beginner\neasy\nmedium\nhard";
	my $statement = read_file prompt 'File with problem statement', -complete => 'filenames';
	my %meta;
	my $generator = prompt 'Generator', -menu => "File\nRun\nUndef";
	my $runner = prompt 'Runner', -menu => "File\nVerifier\nInteractive";
	my $judge = prompt 'Judge', -menu => "Absolute\nPoints";
	my $testcnt = prompt 'Test count', '-i';

	my $timeout = prompt 'Time limit (seconds)', '-n';
	my $olimit = prompt 'Output limit (bytes)', '-i';
	say 'Memory limits are broken, so I won\'t ask you for one';

	prompt_file \%meta, gen => '[Generator::Run] Generator' if $generator eq 'Run';

	if ($runner eq 'File') {
		$meta{tests}[$_ - 1] = prompt "[Runner::File] Score for test ${_} [10]", '-i', -default => 10 for 1 .. $testcnt;
	}

	prompt_file \%meta, ver => '[Runner::Verifier] Verifier' if $runner eq 'Verifier';

	if ($runner eq 'Interactive') {
		say RED, 'WARNING: Runner::Interactive is experimental', RESET;
		prompt_file \%meta, int => '[Runner::Interactive] Interactive verifier';
	}

	insert_problem $id => (
		name => $name,
		level => $level,
		statement => $statement,
		author => $author,
		owner => $owner,
		generator => $generator,
		runner => $runner,
		judge => $judge,
		testcnt => $testcnt,
		($private ? (private => $private) : ()),
		(defined $timeout ? (timeout => $timeout) : ()),
		(defined $olimit ? (olimit => $olimit) : ()));
	set_problem_meta $id => \%meta;
	PUBLISH genpage => $contest ? "ct/$contest/pb/index.html" : 'pb/index.html';
	PUBLISH genpage => $contest ? "ct/$contest/pb/$id.html" : "pb/$id.html";
}

sub cmd_set{
	my $file;
	GetOptions ( 'file!' => \$file );
	my ($id, %values) = @ARGV;
	%values = map { $_ => scalar read_file $values{$_} } keys %values if $file;
	edit_problem $id => %values;
	PUBLISH genpage => 'pb/index.html';
	PUBLISH genpage => "pb/$id.html";
}

sub cmd_list{
	local $, = "\n";
	say problems;
}

sub cmd_rm{
	remove_problem shift;
	PUBLISH genpage => $contest ? "ct/$contest/pb/index.html" : 'pb/index.html';
}

sub cmd_show{
	local $_ = shift or goto &cmd_list;
}

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

GetOptions ( 'contest=s' => \$contest );
local $Gruntmaster::Data::contest = $contest;
my $cmd = 'cmd_' . shift;
cmd_help unless exists $main::{$cmd};
no strict 'refs';
$cmd->(@ARGV) if exists $main::{$cmd};

1;
__END__

=encoding utf-8

=head1 NAME

gruntmaster-problem - shell interface to Gruntmaster 6000 problems

=head1 SYNOPSIS

  gruntmaster-problem [--contest=mycontest] add problem_id
  gruntmaster-problem [--contest=mycontest] list
  gruntmaster-problem [--contest=mycontest] rm problem_id
  gruntmaster-problem [--contest=mycontest] show problem_id
  gruntmaster-problem [--contest=mycontest] set [--file] problem_id key value

=head1 DESCRIPTION

gruntmaster-problem is a tool for managing problems.

Select the contest with the optional argument I<--contest>.

=over

=item B<list>

Prints the list of problems in the selected contest.

=item B<show> I<id>

Prints detailed information about problem I<id>.

=item B<add> I<id>

Adds a new problem with id I<id>.

=item B<rm> I<id>

Removes the problem with id I<id>.

=item B<set> I<id> I<key> I<value>

Sets the I<key> configuration option of problem I<id> to I<value>.

=item B<set> --file I<id> I<key> I<file>

Sets the I<key> configuration option of problem I<id> to the contents of the file I<file>.

=back

=head1 AUTHOR

Marius Gavrilescu E<lt>marius@ieval.roE<gt>

=head1 COPYRIGHT AND LICENSE

Copyright (C) 2014 by Marius Gavrilescu

This library is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.


=cut