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

final class Settings {
    public static function repeat_notes(): bool { return get_option('wizup_forms_repeat_notes', '') === 'yes'; }

    public static function token(): string {
        $cipher = get_option('wizup_forms_token', '');
        if (!$cipher) { return ''; }
        try { return Crypto::open($cipher); } catch (\Throwable $e) { return ''; }
    }

    public static function fingerprint(): string {
        $token = self::token();
        return $token === '' ? '' : hash('sha256', WIZUP_FORMS_API . '|' . $token);
    }

    public static function stages(): array {
        $saved = get_option('wizup_forms_stages', []);
        return ($saved['connection'] ?? '') === self::fingerprint() ? ($saved['items'] ?? []) : [];
    }

    public static function defaults(): array {
        return ['enabled' => '', 'name' => '', 'last_name' => '', 'phone' => '', 'email' => '', 'country' => '972', 'stage_id' => '', 'custom' => []];
    }

    public static function clean(array $input): array {
        $out = self::defaults();
        $out['enabled'] = empty($input['enabled']) ? '' : 'yes';
        foreach (['name', 'last_name', 'phone', 'email'] as $key) {
            $out[$key] = self::field_id($input[$key] ?? '');
        }
        $country = is_scalar($input['country'] ?? '972') ? trim((string) ($input['country'] ?? '972')) : '';
        $out['country'] = preg_match('/^[1-9][0-9]{0,2}$/D', $country) ? $country : '';
        $stage = is_scalar($input['stage_id'] ?? '') ? (string) ($input['stage_id'] ?? '') : '';
        $out['stage_id'] = ctype_digit($stage) && (int) $stage > 0 ? (int) $stage : '';
        foreach (array_slice(is_array($input['custom'] ?? null) ? $input['custom'] : [], 0, 100) as $row) {
            if (!is_array($row)) { continue; }
            $key = is_scalar($row['key'] ?? '') ? trim((string) $row['key']) : '';
            $field = self::field_id($row['field'] ?? '');
            if ($key !== '' && $field !== '' && preg_match('/^[\p{L}\p{M}\p{N}_-]{1,100}$/uD', $key)) {
                $out['custom'][] = ['key' => $key, 'field' => $field, 'type' => ($row['type'] ?? '') === 'boolean' ? 'boolean' : 'text'];
            }
        }
        return $out;
    }

    private static function field_id($value): string {
        return is_scalar($value) ? preg_replace('/[^A-Za-z0-9_-]/', '', (string) $value) : '';
    }
}