=head1 SYNOPSIS

    use Lingua::AtD;

    # Create a new service proxy
    my $atd = Lingua::AtD->new( {
        host     => 'service.afterthedeadline.com',
        port     => 80,
        throttle => 2,
    });

    # Run spelling and grammar checks. Returns a Lingua::AtD::Response object.
    my $doc_check = $atd->check_document('Text to check.');
    # Loop through reported document errors.
    foreach my $atd_error ($doc_check->get_errors()) {
        # Do something with...
        print "Error string: ", $atd_error->get_string(), "\n";
    }

    # Run only grammar checks. Essentially the same as
    # check_document(), sans spell-check.
    my $grmr_check = $atd->check_grammar('Text to check.');
    # Loop through reported document errors.
    foreach my $atd_error ($grmr_check->get_errors()) {
        # Do something with...
        print "Error string: ", $atd_error->get_string(), "\n";
    }

    # Get statistics on a document. Returns a Lingua::AtD::Scores object.
    my $atd_scores = $atd->stats('Text to check.');
    # Loop through reported document errors.
    foreach my $atd_metric ($atd_scores->get_metrics()) {
        # Do something with...
        print $atd_metric->get_type(), "/", $atd_metric->get_key(),
            " = ", $atd_metric->get_value(), "\n";
    }

=head1 DESCRIPTION

Lingua::AtD provides an OO-style interface for After the Deadline's grammar and spell checking services.

=head1 METHODS

=over 4

=item new

This constructor takes four arguments, all optional. The sample below shows the defaults.

    $atd = Lingua::AtD->new({
        api_key  => 'Lingua-AtD',
        host     => 'service.afterthedeadline.com',
        port     => 80,
        throttle => 2,
    });

=over 4

=item api_key

API key used to access the service. Defaults to this package's name plus 32 hex digits (i.e. I<Lingua-AtD>-7b8391f59fd9fa4246b2c69cd8793b88). See the L<API Documentation|http://www.afterthedeadline.com/api.slp> for requirements. The default will work, and so far as I know will cause no problems.

=item host

Host for the AtD service. Defaults to the public host: I<service.afterthedeadline.com>. AtD's software is open source, and it's entirely possible to download and set up your own private AtD service. See the L<AtD Project website|http://open.afterthedeadline.com/> for details.

=item port

Port for the AtD service. Defaults to the standard http port: I<80>. AtD's software is open source, and it's entirely possible to download and set up your own private AtD service. See the L<AtD Project website|http://open.afterthedeadline.com/> for details.

=item throttle

There's no API documentation stating such, but testing has shown that AtD service throws a 503 error if called too quickly. This specifies the number of seconds to wait between calls. The default is 2 and seems to work find.

=back

=item get_api_key

    $atd->get_api_key();

Returns the API Key used to access the AtD service.

=item get_host

    $atd->get_host();

Returns the host of the AtD service.

=item get_port

    $atd->get_port();

Returns the port of the AtD service.

=item get_service_url

    $atd->get_service();

Returns a formatted URL for the AtD service.

=item get_throttle

    $atd->get_throttle();

Returns the number of seconds that must pass between calls to the AtD service.

=item set_throttle

    $atd->set_throttle(3);

Sets the number of seconds that must pass between calls to the AtD service.

=item check_document

    $atd_results = $atd->check_document('Some text stringg in badd nneed of prufreding.');

Invokes the document check service for some string of text and return a L<Lingua::AtD::Results> object.

From the L<API Documentation|http://www.afterthedeadline.com/api.slp>: I<Checks a document and returns errors and suggestions>

=item check_grammar

    $atd_results = $atd->check_grammar('Some text stringg in badd nneed of prufreding.');

Invokes the grammar check service for some string of text and return a L<Lingua::AtD::Results> object. This differs from I<check_document> in that it only checks grammar and style, not spelling.

From the L<API Documentation|http://www.afterthedeadline.com/api.slp>: I<Checks a document (sans spelling) returns errors and suggestions>

=item stats

    $atd_scores = $atd->stats('Some text stringg in badd nneed of prufreding.');

Invokes the stats service for some string of text and return a L<Lingua::AtD::Scores> object. This differs from I<check_document> in that it only checks grammar and style, not spelling.

From the L<API Documentation|http://www.afterthedeadline.com/api.slp>: I<Returns statistics about the writing quality of a document>

=back

=head1 BUGS

No known bugs.

=head1 IRONY

Wouldn't it be kind of funny if I had a ton of spelling/grammar/style errors in my documentation? Yeah, it would. And I bet there are. Shame on me for not running my documentation through my own module.

=head1 SEE ALSO

=for :list
* L<Your::Module>
* L<Your::Package>

See the L<API Documentation|http://www.afterthedeadline.com/api.slp> at After the Deadline's website.

B<NB:> In the L<API Documentation|http://www.afterthedeadline.com/api.slp>, there is a fourth service called B</info.slp>. I do not plan to implement this. Each Lingua::AtD::Error supplies an informative URL when one is available. I see no reason to call this independently, but feel free to submit a patch if you find a reason.