function glsr_create_carrier_term(): array {
    $dotNum = filter_input(INPUT_GET, 'dotNumber', FILTER_VALIDATE_INT);
    if (empty($dotNum)) {
        return []; // don't assign category if a dotNumber isn't requested
    }
    $termSlug = 'carrier_'.$dotNum;
    if ($term = term_exists($termSlug, glsr()->taxonomy)) {
        return $term;
    }
    $termName = glsr_get_carrier_name($dotNum);
    if (empty($termName)) {
        return glsr_create_fallack_carrier_term();
    }
    $term = wp_insert_term($termName, glsr()->taxonomy, ['slug' => $termSlug]);
    if (is_wp_error($term)) {
        glsr_log()->error($term->get_error_message());
        return glsr_create_fallack_carrier_term();
    }
    return $term;
}

function glsr_create_fallack_carrier_term(): array {
    $termName = 'Unknown Carrier';
    $termSlug = 'unknown_carrier';
    if ($term = term_exists($termSlug, glsr()->taxonomy)) {
        return $term;
    }
    return wp_insert_term($termName, glsr()->taxonomy, ['slug' => $termSlug]);
}

function glsr_get_carrier_name(int $dotNum): string {
    $apiUrl = 'https://mobile.fmcsa.dot.gov/qc/services/carriers/';
    $apiKey = 'e9d6c0cb17ee98addddfc81f8af610f035949f50';
    $url = sprintf('%s/%s/', untrailingslashit($apiUrl), $dotNum);
    $url = add_query_arg('webKey', $apiKey, $url);
    $response = wp_remote_get($url);
    if (is_wp_error($response)) {
        glsr_log()->error($response->get_error_message());
        return '';
    }
    if ('200' != ($statusCode = wp_remote_retrieve_response_code($response))) {
        glsr_log()->error(sprintf('Unable to connect to %s [%s]', $url, $statusCode));
        return '';
    }
    $body = json_decode(wp_remote_retrieve_body($response), true);
    return glsr_get($body, 'content.carrier.dbaName');
}

function glsr_set_carrier_assigned_terms(array $args): array {
    $term = glsr_create_carrier_term();
    if (!empty($term['term_id'])) {
        $args['assigned_terms'] = $term['term_id'];
    }
    return $args;
}

add_action('site-reviews/defaults/site-review', 'glsr_set_carrier_assigned_terms');
add_action('site-reviews/defaults/site-reviews', 'glsr_set_carrier_assigned_terms');
add_action('site-reviews/defaults/site-reviews-form', 'glsr_set_carrier_assigned_terms');
add_action('site-reviews/defaults/site-reviews-summary', 'glsr_set_carrier_assigned_terms');