package unix_dog::Controller::Register;
use Mojo::Base 'Mojolicious::Controller', -signatures;
use Net::LDAPS;
use Net::LDAP::Extension::SetPassword;
use Net::LDAP::Constant qw(LDAP_NO_SUCH_OBJECT);
use Email::Simple;
use Email::Sender::Simple;
use Email::Sender::Transport::Sendmail;

sub registration($self) {
    $self->render('register/registerPage');
}

sub register($self) {
    my $v = $self->validation;

    $v->required('username', 'trim')->size(1,32)->like(qr/^([a-z_][a-z0-9_-]*[\$]?)$/);
    $v->required('password')->size(8, 256);
    $v->required('email')->size(1, 512);
    $v->required('pubkey')->size(1,4096);
    $v->required('bio')->size(1, 2048);

    my $username = $self->param('username');
    my $password = $self->param('password');
    my $email = $self->param('email');
    my $pubkeys = $self->param('pubkey');
    my $bio = $self->param('bio');
    my $fromIP = $self->tx->remote_address;

    $self->stash(username => $username);
    $self->stash(email => $email);
    $self->stash(pubkeys => $pubkeys);
    $self->stash(bio => $bio);

    if ($v->has_error) {
        my $err = "Your input was invalid. Please try again.";
        my @failed = $v->failed;
        $self->stash(err => $err);
        $self->stash(failed => @failed);
        $self->stash(v => $v);
        return $self->render('register/registerPage');
    }

    my $config = $self->config;
    return Mojo::IOLoop->subprocess->run_p(sub {
        my $connStr = $config->{'ldap'}->{'uri'};
        my $bindDN = $config->{'ldap'}->{'bindDN'};
        my $bindPasswd = $config->{'ldap'}->{'password'};

        my $ldap = Net::LDAPS->new($connStr, verify=>'none', version => 3) or die "$@";
        my $mesg = $ldap->bind($bindDN, password=>$bindPasswd);
        $mesg->code  and  die $mesg->error;

        $mesg = $ldap->search(
            base   => 'cn=NextID,ou=Unverified,dc=unix,dc=dog',
            scope  => 'base',
            filter => '(&)'
        );
        $mesg->code  and  die $mesg->error;

        my @searchEntries = $mesg->entries;
        my $uidEntry = $searchEntries[0];
        $uidEntry or die 'Entry not found';

        my $nextUID = int($uidEntry->get_value('uidnumber'));
        my $nextGID = int($uidEntry->get_value('gidnumber'));

        $mesg = $ldap->search(
            base   => 'ou=Dogs,dc=unix,dc=dog',
            filter => '(uid=' .$username. ')',
        );
        $mesg->code  and  die $mesg->error;
        $mesg->count == 0 or die 'That username is already in use.';

        $mesg = $ldap->search(
            base   => 'ou=Dogs,ou=Unverified,dc=unix,dc=dog',
            filter => '(uid='. $username .')',
        );
        $mesg->code  and  die $mesg->error;
        $mesg->count == 0 or die 'That username is already in use.';

        $mesg = $ldap->modify(
            $uidEntry,
            replace => {
                uidNumber => $nextUID + 1,
                gidNumber => $nextGID + 1,
            }
        );
        $mesg->code and die $mesg->error;

        my $userDN = 'CN='.$username.',OU=Dogs,OU=Unverified,DC=unix,DC=dog';

        $mesg = $ldap->add(
            $userDN,
            attrs => [
                cn            => $username,
                mail          => $username . '@unix.dog',
                sshPublicKey  => (split "\n", $pubkeys),
                objectClass   => [
                    'top',
                    'extensibleObject',
                    'inetOrgPerson',
                    'person',
                    'organizationalPerson',
                    'posixAccount',
                    'shadowAccount',
                    'uidObject',
                    'ldapPublicKey'
                ],
                uid           => $username,
                uidNumber     => $nextUID,
                gidNumber     => $nextGID,
                homeDirectory => '/home/' . $username,
                loginShell    => '/bin/bash',
            ]
        );
        $mesg->code and die $mesg->error;

        $mesg = $ldap->set_password(
            user      => $userDN,
            newpasswd => $password,
        );
        $mesg->code and die $mesg->error;

        my $groupDN = 'CN='.$username.',OU=Group,OU=Unverified,DC=unix,DC=dog';
        $mesg = $ldap->add(
            $groupDN,
            attrs => [
                cn          => $username,
                objectClass => [ 'groupOfNames', 'posixGroup' ],
                gidNumber   => $nextGID,
                member      => [ $userDN ],
                memberUid   => [ $username ],
            ]
        );
        $mesg->code and die $mesg->error;

        my $message = Email::Simple->create(
            header => [
                From    => 'registration@unix.dog',
                To      => 'alpha@unix.dog',
                Subject => 'New Woof Registration',
            ],
            body   => "ARF WOOF!! There's a dog waiting at the door!
Woofname: $username
EMail: $email
More info: $bio
IP: $fromIP
Conformation LDIF:
dn: $userDN
changetype: moddn
newsuperior: ou=Dogs,dc=unix,dc=dog
deleteoldrdn: 1
-
dn: $groupDN
changetype: moddn
newsuperior: ou=Group,dc=unix,dc=dog
deleteoldrdn: 1"
        );

        Email::Sender::Simple->send($message);

    })->then(sub (@results) {
        $self->render('register/registerDone');
    })->catch(sub ($err) {
        $self->stash(err => $err);
        $self->render('register/registerPage');
    })->wait;


}

1;