1 files changed, 33 insertions, 6 deletions
diff --git a/lib/Enigmatic/Rotor.pm b/lib/Enigmatic/Rotor.pm
index e0a3b97..9a88718 100644
--- a/lib/Enigmatic/Rotor.pm
+++ b/lib/Enigmatic/Rotor.pm
@@ -3,16 +3,33 @@ use DAKKAR::p 'class';
 use Enigmatic::Types qw(WiringMap Letter RotorPos);
 use MooseX::Types::Set::Object;
 
+with 'Enigmatic::Role::Rotate';
+
 has wiring => (
     is => 'ro',
     isa => WiringMap,
     coerce => 1,
 );
 
+has inverse_wiring => (
+    is => 'ro',
+    isa => WiringMap,
+    init_arg => undef,
+    lazy_build => 1,
+);
+
+sub _build_inverse_wiring {
+    my ($self) = @_;
+    my $w = $self->wiring;
+    my $ret = { reverse %$w };
+    return $ret;
+}
+
 has ring_setting => (
     is => 'rw',
     isa => RotorPos,
     default => 0,
+    coerce => 1,
 );
 
 has notches => (
@@ -33,18 +50,28 @@ sub map {
         { isa => Letter },
     );
 
-    return $self->wiring->at($self->_apply_ring_setting($letter));
+    return $self->_real_map($letter,'wiring');
 }
 
-sub _apply_ring_setting {
+sub inverse_map {
     my $self = shift;
     my ($letter) = pos_validated_list(
         \@_,
         { isa => Letter },
     );
 
-    return chr(
-        (ord($letter) - ord('A') + $self->ring_setting)
-            % 26
-                +ord('A') );
+    return $self->_real_map($letter,'inverse_wiring');
+}
+
+sub _real_map {
+    my ($self,$letter,$wiring) = @_;
+
+    my $setting = $self->ring_setting;
+
+    my $log = "{$letter";
+    $letter = _rotate_by($letter,$setting);$log.=$letter;
+    $letter = $self->$wiring->at($letter);$log.=$letter;
+#    $letter = _rotate_by($letter,-$setting);$log.=$letter;
+    $log .= "}\n";warn $log;
+    return $letter;
 }