<?php
/**
 * @package AKSRT
 */

namespace AKSRT\Admin;

defined('ABSPATH') || exit;

trait ImportExportControllerPart2 {


    private function get_backup_schedule_settings(): array {
        $provider = SchemaProvider::get_instance();
        $settings = $provider->read_settings('tools', 'backup');
        $frequency = sanitize_key((string) ($settings['backup_frequency'] ?? 'weekly'));
        $allowed = ['daily', 'weekly', 'monthly'];
        if (!in_array($frequency, $allowed, true)) {
            $frequency = 'weekly';
        }

        return [
            'enabled'  => !empty($settings['backup_auto']),
            'schedule' => $frequency === 'monthly' ? self::MONTHLY_SCHEDULE : $frequency,
        ];
    }

    private function build_settings_backup(string $type, string $label = ''): array {
        $schema_provider = SchemaProvider::get_instance();
        $domains = $schema_provider->get_domain_keys();

        $payload = [
            'version'   => AKSRT_VERSION ?? '3.4.0',
            'exported'  => gmdate('Y-m-d H:i:s'),
            'domains'   => [],
            'standalone'=> [],
        ];

        foreach ($domains as $domain) {
            $payload['domains'][$domain] = [
                'option_key' => $schema_provider->get_option_key($domain),
                'data'       => $schema_provider->read_settings($domain),
            ];
        }

        foreach (\AKSRT\Settings\Settings::STANDALONE_OPTION_KEYS as $key) {
            $value = get_option($key);
            if ($value !== false) {
                $payload['standalone'][$key] = $value;
            }
        }

        return [
            'id'         => time(),
            'type'       => $type,
            'label'      => $label !== '' ? $label : $this->default_backup_label($type),
            'created_at' => gmdate('Y-m-d H:i:s'),
            'payload'    => $payload,
        ];
    }

    private function trim_setting_backups(array $backups): array {
        $retain = (int) (\AKSRT\Settings\Settings::get_value('backup_retain', 7));
        $retain = max(3, min(20, $retain));

        if (count($backups) <= $retain) {
            return array_values($backups);
        }

        return array_values(array_slice($backups, 0, $retain));
    }

    private function default_backup_label(string $type): string {
        $map = [
            'manual'       => __('手动备份', 'aksrt'),
            'scheduled'    => __('定期备份', 'aksrt'),
            'reset_all'    => __('重置全部前快照', 'aksrt'),
            'reset_domain' => __('重置分区前快照', 'aksrt'),
            'update_theme' => __('更新主题前快照', 'aksrt'),
        ];

        return $map[$type] ?? __('设置快照', 'aksrt');
    }
}