<?PHP
/**
 * Provides the API.
 */
declare(strict_types = 1);

require_once __DIR__ . '/../provideEnv.php';

$verb = MD_STD_IN::get_http_input_text("verb");
$subject = MD_STD_IN::get_http_input_text("subject");

if (empty($verb) && empty($subject)) {
    header('Content-Type: application/json; charset=utf-8');
    readfile(__DIR__ . '/../static/json/openapi.json');
    return;
}

$availableLangs = MD_STD::scandir(__DIR__ . '/../l10n/musdb/');
$lang = MD_STD_IN::get_http_input_text("lang", "en", $availableLangs);

$parser = MD_STD_IN::get_http_input_text("parser");
$data = trim(filter_input(INPUT_POST, "data"));

if ($verb === 'evaluate' && in_array($subject, ['object', 'minimaldatensatz', 'count_vocabulary_entries_to_be_added'], true)) {

    $limitMode = match($subject) {
        'object' => QARunnerLimitMode::main,
        'minimaldatensatz' => QARunnerLimitMode::minimaldatensatz,
        'count_vocabulary_entries_to_be_added' => QARunnerLimitMode::count_new_vocab_entries,
    };

    $runner = new QARunner($lang, $parser, $data, $limitMode);

    header('Content-Type: application/json; charset=utf-8');
    echo json_encode([
        'results' => match($subject) {
            'object' => $runner->evaluateObjects(),
            'minimaldatensatz' => $runner->evaluateObjectsForMinimaldatensatz(),
            'count_vocabulary_entries_to_be_added' => $runner->countNewlyRequestedVocabularyEntries(),
        },
    ]);

}
else if ($verb === 'convert_to_xml' && in_array($subject, QaConvertToXml::listAvailableOutputFormats(), true)) {

    $institution_name = MD_STD_IN::get_http_input_text("institution_name");
    $institution_identifier = MD_STD_IN::get_http_input_text("institution_identifier");

    $runner = new QARunner($lang, $parser, $data, null); // TODO: Add limit modes per format
    header('Content-Type: text/xml; charset=utf-8');
    echo $runner->convertToXml($subject, $institution_name, $institution_identifier);

}