File Coverage

blib/lib/Person/ID/CZ/RC/Generator.pm

Criterion	Covered	Total	%
statement	80	80	100.0
branch	32	32	100.0
condition	3	3	100.0
subroutine	14	14	100.0
pod	2	2	100.0
total	131	131	100.0

package Person::ID::CZ::RC::Generator;

# Pragmas.
use strict;
use warnings;

# Modules.
use Class::Utils qw(set_params);
use DateTime;
use English qw(-no_match_vars);
use Error::Pure qw(err);
use List::MoreUtils qw(none);
use Random::Day;
use Readonly;

# Constants.
Readonly::Scalar our $EMPTY_STR => q{};
Readonly::Scalar our $YEAR_FROM => 1855;
Readonly::Scalar our $YEAR_TO => 2054;

# Version.
our $VERSION = 0.05;

# Constructor.
sub new {
	my ($class, @params) = @_;

	# Create object.
	my $self = bless {}, $class;

	# Alternate flag.
	$self->{'alternate'} = undef;

	# Day.
	$self->{'day'} = undef;

	# Month.
	$self->{'month'} = undef;

	# RC number separator.
	$self->{'rc_sep'} = $EMPTY_STR;

	# Serial.
	$self->{'serial'} = undef;

	# Sex.
	$self->{'sex'} = undef;

	# Year.
	$self->{'year'} = undef;

	# Process parameters.
	set_params($self, @params);

	# Check RC separator.
	if (none { $self->{'rc_sep'} eq $_ } ('', '/')) {
		err "Parameter 'rc_sep' has bad value.";
	}

	# Check serial part of RC.
	if (defined $self->{'serial'}) {
		if ($self->{'serial'} !~ m/^\d+$/ms) {
			err "Parameter 'serial' isn't number.";
		} elsif ($self->{'serial'} < 1) {
			err "Parameter 'serial' is lesser than 1.";
		} elsif ($self->{'serial'} > 999) {
			err "Parameter 'serial' is greater than 999.";
		}
	}

	# Check sex.
	if (defined $self->{'sex'}
		&& none { $self->{'sex'} eq $_ } qw(male female)) {

		err "Parameter 'sex' has bad value.";
	}

	# Check year.
	if (defined $self->{'year'}) {
		if ($self->{'year'} < $YEAR_FROM) {
			err "Parameter 'year' is lesser than $YEAR_FROM.";
		} elsif ($self->{'year'} > $YEAR_TO) {
			err "Parameter 'year' is greater than $YEAR_TO.";
		}
	}

	# Object.
	return $self;
}

# Get rc.
sub rc {
	my $self = shift;

	# Construct date.
	my $date = Random::Day->new(
		'day' => $self->{'day'},
		'dt_from' => DateTime->new(
			'day' => 1,
			'month' => 1,
			'year' => $YEAR_FROM,
		),
		'dt_to' => DateTime->new(
			'day' => 31,
			'month' => 12,
			'year' => $YEAR_TO,
		),
		'month' => $self->{'month'},
		'year' => $self->{'year'},
	)->get;

	# Sex.
	my $sex = $self->{'sex'};
	if (! defined $sex) {
		$sex = int(rand(2)) ? 'male' : 'female';
	}

	# Get month part.
	my $month = $date->month;
	if ($sex eq 'female') {
		$month += 50;
	}

	# Alternate number.
	if ($self->{'alternate'}) {
		$month += 20;
	}

	# Construct date part.
	my $date_part = (sprintf '%02d%02d%02d', (substr $date->year, 2), $month, $date->day);

	# Add serial.
	my $serial = $self->{'serial'};
	if (! defined $serial) {
		$serial = int(rand(1000)) + 1;
	}
	my $serial_part = sprintf '%03d', $serial;

	# Add checksum.
	if ($date->year > 1954) {
		$serial_part = $self->_checksum($date_part, $serial_part);
	}

	# Construct rc.
	my $rc = $date_part.$self->{'rc_sep'}.$serial_part;

	# Return $rc.
	return $rc;
}

# Compute checksum.
sub _checksum {
	my ($self, $date_part, $serial_part) = @_;
	my $num = $date_part.$serial_part;
	my $num_11 = $num % 11;
	my $checksum;
	if ($num_11 == 10) {
		$checksum = 0;
	} else {
		$checksum = $num_11;
	}
	return $serial_part.$checksum;
}

1;

__END__