package Fripost::Schema::Type::Alias;

use 5.010_000;
use warnings;
use strict;

use base qw/Net::LDAP/;
our $VERSION = '0.01';


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

# Search an alias, and return the corresponding entries if found. If no
# alias is given, returns all aliases. 
# Filters on values of both keys `address' and `goto' (unless they are
# undefined).
# An extra key `domain' can be given to scope the search on aliases for
# this domain only.
sub search {
    my $self = shift;
    my $alias = shift;

    my ($username, $domain);
    $domain = $alias->{domain} if defined $alias->{domain};
    ($username, $domain) = split /\@/, $alias->{address}, 2
        if defined $alias->{address};

    my $base  = $self->{_options}->{base_dn};
    $base  = join ',', ( 'dc='.$domain, $base )
        if defined $domain;

    my @filters = ('(ObjectClass=virtualAliases)');
    push @filters, '(mailLocalAddress=' .$username. ')'
        if defined $username;
    push @filters, '(mailTarget=' .$alias->{goto}. ')'
        if defined $alias->{goto};

    my $res = $self->{_ldap}->search(
                  base   => $base,
                  scope  => 'subtree',
                  attrs  => [ 'mailLocalAddress', 'mailTarget', 'isActive' ],
                  filter => Fripost::Schema::Utils::mkAndFilter( @filters )
            );
    die "Error: " .$res->error. "\n" if $res->code;

    return $res;
}

# Add the given alias
sub add {
    my $self = shift;
    my $alias = shift;

    # TODO: detect cycles
    die "Error: Cannot create alias `" .$alias->{address}.
        "' targetting to itself.\n"
        if $alias->{address} eq $alias->{goto};

    my ($username, $domain) = split /\@/, $alias->{address}, 2;
    my $base = join ',', ( 'mailTarget='.$alias->{goto}
                         , 'dc='. $domain
                         , $self->{_options}->{base_dn} );

    my @attrs = ( mailLocalAddress => $username );
    my $res;
    if ($self->search({ goto => $alias->{goto}, domain => $domain })->count) {
        $res = $self->{_ldap}->modify( $base, add => [ @attrs ] );
    }
    else {
        $res = $self->{_ldap}->add( $base,
                 attrs => [ objectClass      => [ 'inetLocalMailRecipient',
                                                  'virtualAliases' ]
                          , @attrs
                          , isActive         => $alias->{isActive}
                          ]
               );
    }
    die "Error: " .$res->error. "\n" if $res->code;
    return $res;
}


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

1;

=head1 NAME

Fripost::Schema::Type::Alias - 

=head1 AUTHOR

Guilhem Moulin C<< <guilhem at fripost.org> >>

=head1 COPYRIGHT

Copyright 2012 Guilhem Moulin, all rights reserved.

=head1 LICENSE

This program is free software; you can redistribute it and/or modify it
under the same terms as perl itself.

=cut

1; # End of Alias.pm

__END__