<?php
defined('ABSPATH') || exit;

// Schema comes from Fluent Forms, never from a submitted field-type hint.
final class FormGuard_FluentForms {
    public static function fields($form): array {
        if (!is_object($form) || !empty($form->has_payment) || !class_exists('FluentForm\\App\\Modules\\Form\\FormFieldsParser')) {
            return [];
        }
        try {
            $inputs = \FluentForm\App\Modules\Form\FormFieldsParser::getInputsByElementTypes($form, ['input_text', 'textarea', 'input_email'], ['element', 'admin_label']);
        } catch (\Throwable $error) {
            return [];
        }
        if (!is_array($inputs)) { return []; }
        $fields = [];
        foreach ($inputs as $key => $input) {
            if (!is_string($key) || !preg_match('/^[a-zA-Z0-9_-]{1,100}$/', $key) || !is_array($input) || !in_array($input['element'] ?? '', ['input_text', 'textarea', 'input_email'], true)) {
                continue;
            }
            $fields[$key] = is_string($input['admin_label'] ?? null) && $input['admin_label'] !== '' ? $input['admin_label'] : $key;
        }
        return $fields;
    }

    public static function available(int $limit): array {
        if ($limit < 1 || !class_exists('FluentForm\\App\\Models\\Form')) { return []; }
        try {
            $forms = \FluentForm\App\Models\Form::where('has_payment', 0)->orderBy('id', 'ASC')->limit($limit)->get();
            $available = [];
            foreach ($forms as $form) {
                $fields = self::fields($form);
                if ($fields && (int) $form->id > 0) {
                    $available['fluentform_' . (int) $form->id] = ['title' => 'Fluent Forms：' . (string) $form->title, 'fields' => $fields];
                }
            }
            return $available;
        } catch (\Throwable $error) {
            return [];
        }
    }
}