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package CatDap::Controller::register;
use Moose;
use namespace::autoclean;
use Email::Valid;
use Data::UUID;

BEGIN {extends 'Catalyst::Controller'; }

=head1 NAME

CatDap::Controller::register - Catalyst Controller

=head1 DESCRIPTION

Catalyst Controller.

=head1 METHODS

=cut


=head2 index

=cut

sub index :Path :Args(0) : Form {
    my ( $self, $c ) = @_;

    #my $form = Catalyst::Controller::HTML::FormFu->form();
    #$c->response->body('Matched CatDap::Controller::register in register.');
}

sub check : Local {
    my ( $self, $c ) = @_;

    my %details = %{$c->request->params};
    my $username = lc($c->request->params->{uid});
    my @errors;
    $c->stash(errors => []);
    # Check username, start with letter, followed by letters or numbers
    if ($username !~ /^[a-z][a-z0-9_-]*$/) {
        push @errors, $c->loc('Invalid username');
    }
    my $email = $c->request->params->{mail1};
    if (! Email::Valid->address($email)) {
        push @errors, $c->loc('Invalid email address');
    }
    if ($email ne $c->request->params->{mail2}) {
        push @errors, $c->loc('Addresses do not match');
    }
    if (! $c->validate_captcha($c->req->param('validate'))){
        push @errors, $c->loc('Incorrect validation text, please try again');
    }

    if ( ! open( my $etcpasswd, "/etc/passwd")) {
        push @errors, $c->loc('Cannot check /etc/passwd, please warn system administrators');
    } else {
        if ( grep { /^$username:/ } <$etcpasswd> ) {
            push @errors, $c->loc('Invalid username, already used by system');
        }
        close($etcpasswd);
    }

    if ( grep /^$username$/, @{${$c->config}{'register'}{'login_blacklist'}}) {
        push @errors, $c->loc('Username is not authorized to be used');
    }

    if ($c->request->params->{gn} !~ /^[\p{IsAlnum} ]+$/) {
        push @errors, $c->loc(
            'The first name supplied contains illegal characters'
        );
    }
    if ($c->request->params->{sn} !~ /^[\p{IsAlnum} ]+$/) {
        push @errors, $c->loc(
            'The surname supplied contains illegal characters'
        );
    }

    if (@errors) {
        $c->stash(errors => \@errors);
        $c->stash(template => 'register/index.tt');
        return;
    }

    # check in LDAP now that we have validated username and email
    my $mesg = $c->model('Proxy')->search("(mail=$email)");
    if ($mesg->entries()) {
        push @errors,$c->loc(
            'An account already exists with this email address'
        );
    }
    $mesg = $c->model('Proxy')->search("(uid=$username)");
    if ($mesg->entries()) {
        push @errors,$c->loc('An account already exists with this username');
    }

    if (@errors) {
        $c->stash(errors => \@errors);
        $c->stash(template => 'register/index.tt');
        return;
    }

    my $dn = "uid=$username,${$c->config}{'Model::Proxy'}{'base'}";
    my $ug =  Data::UUID->new;
    my $password = $ug->create_str();
    my $cn = $c->request->params->{gn} . " " .  $c->request->params->{sn};
    $c->log->info("Creating account for user $username");
    $c->log->debug("Preferred language: " . ${$c->languages}[0]);
    $mesg = $c->model('Proxy')->add($dn,
        attr => [
            objectclass => [ 'inetOrgPerson' ],
            sn => $c->request->params->{sn},
            gn => $c->request->params->{gn},
            cn => $cn,
            mail => $email,
            pwdReset => 'TRUE',
            userPassword => $password,
	    preferredLanguage => ${$c->languages}[0],
        ]
    );
    if ($mesg->code) {
        push @errors,$mesg->error;
	$c->log->info( sprintf("Creating DN $dn failed: %s", $mesg->error) );
        $c->stash(errors => \@errors);
        $c->stash(template => 'register/index.tt');
	return ;
    }

    $c->stash(
	email => {
	    'to'	=> $email,
	    'from'	=> ${$c->config}{'emailfrom'},
	    'subject'	=> ${$c->config}{'apptitle'} . " - " . $c->loc('Activation'),
	    'template'	=> 'activation.tt',
	},
	cn  => $cn,
	url => $c->uri_for('/user/firstlogin') . "?username=$username&key=$password",
    );

    $c->log->info("Sending activation mail for user $username to $email");
    $c->forward( $c->view('Email::Template') );
    if ( @{ $c->error } ) {
        my $errors = join "\n",@{ $c->error };
	$c->log->info("Sending activation mail to $email failed: $errors");
        $c->response->body($c->loc('An error occured sending the email, but your account was created. Please try the password recovery process if you entered the correct email address. Errors [_1]', $errors));
        $c->error(0); # Reset the error condition if you need to
    }
    $c->stash(template => 'register/complete.tt');
}

sub captcha : Local {
	my ($self, $c) = @_;
	return $c->create_captcha();
}



=head1 AUTHOR

Buchan Milne

=head1 LICENSE

This library is free software. You can redistribute it and/or modify
it under the same terms as Perl itself.

=cut

__PACKAGE__->meta->make_immutable;

1;