package Sietima::Role::ManualSubscription;
use Moo::Role;
use Sietima::Policy;
use Sietima::HeaderURI;
use namespace::clean;

# VERSION
# ABSTRACT: adds standard list-related headers to messages

with 'Sietima::Role::WithOwner';

=head1 SYNOPSIS

  my $sietima = Sietima->with_traits(
    'Headers',
    'ManualSubscription',
  )->new({
    %args,
    owner => 'listmaster@example.com',
  });

=head1 DESCRIPTION

A L<< C<Sietima> >> list with this role (and L<<
C<Headers>|Sietima::Role::Headers >>) applied will add, to each
outgoing message, headers specifying that to subscribe and
unsubscribe, people sould email the list owner.

=modif C<list_addresses>

This method declares two "addresses", C<subscribe> and
C<unsubscribe>. Both are C<mailto:> URLs for the list
L<owner|Sietima::Role::WithOwner/owner>, with different subjects.

=cut

around list_addresses => sub($orig,$self) {
    my $list_name = $self->name // 'the list';

    return +{
        $self->$orig->%*,
        subscribe => Sietima::HeaderURI->new_from_address(
            $self->owner,
            { subject => "Please add me to $list_name" },
        ),
        unsubscribe => Sietima::HeaderURI->new_from_address(
            $self->owner,
            { subject => "Please remove me from $list_name" },
        ),
    };
};


1;