package Enigmatic::Types;
use DAKKAR::p;
use MooseX::Types -declare => [qw(Letter WiringMap RotorPos)];
use MooseX::Types::Moose qw(Str Int);
use MooseX::Types::Structured qw(Map);

subtype Letter,
    as Str,
    where { /[A-Z]/ };

subtype WiringMap,
    as Map[Letter,Letter],
    where {
        my $in = $_->keys->sort->join;
        my $out = $_->values->sort->join;
        $in eq $out and $in eq ['A'..'Z']->join;
    };

coerce WiringMap,
    from Str,
    via {
        my @out = $_->uc->split(qr//)->flatten;
        croak "invalid wiring string <$_>"
            unless @out == 26;
        my %ret;
        @ret{'A'..'Z'}=@out;
        \%ret;
    };

subtype RotorPos,
    as Int,
    where { $_ >=0 and $_ <= 26 };