wordpress-theme-aksrt/src/Admin/ControllerBase.php

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

namespace AKSRT\Admin;

defined('ABSPATH') || exit;

abstract class ControllerBase {

    /**
     * REST API namespace (shared with Admin).
     */
    const API_NAMESPACE = 'aksrt/v1';

    /**
     * Register REST routes for this domain.
     * Subclasses must implement this method.
     */
    abstract public function register_routes(): void;

    /**
     * Permission callback — requires manage_options capability.
     */
	public function check_permission(?\WP_REST_Request $request = null) {
		if (!current_user_can('manage_options')) {
			if ($request === null) {
				return false;
			}
			return new \WP_Error('aksrt_admin_forbidden', __('无权执行此操作', 'aksrt'), ['status' => 403]);
		}
		if ($request !== null) {
			$nonce = (string) $request->get_header('X-WP-Nonce');
			if ($nonce === '' || !wp_verify_nonce($nonce, 'wp_rest')) {
				return new \WP_Error('aksrt_rest_nonce', __('安全验证失败，请刷新页面后重试', 'aksrt'), ['status' => 403]);
			}
		}
		return true;
    }

    /**
     * Create a standard success response.
     */
    protected function success($data = [], int $status = 200): \WP_REST_Response {
        return new \WP_REST_Response(array_merge(['success' => true], $data), $status);
    }

    /**
     * Create a standard error response.
     */
    protected function error(string $message, int $status = 400): \WP_REST_Response {
        return new \WP_REST_Response([
            'success' => false,
            'message' => $message,
        ], $status);
    }

    /**
     * Read JSON request body safely.
     */
    protected function get_json_params(\WP_REST_Request $request): array {
        $params = $request->get_json_params();
        return is_array($params) ? $params : [];
    }

    /**
     * Sanitize a settings array using a whitelist of allowed keys.
     *
     * @param array $input    Raw input data.
     * @param array $allowed  Allowed keys with their types (string|int|bool|float|array).
     * @return array Sanitized data.
     */
    protected function sanitize_fields(array $input, array $allowed): array {
        $out = [];
        foreach ($allowed as $key => $type) {
            if (!array_key_exists($key, $input)) continue;
            $val = $input[$key];
            switch ($type) {
                case 'string':
                    $out[$key] = sanitize_text_field($val);
                    break;
                case 'textarea':
                    $out[$key] = sanitize_textarea_field($val);
                    break;
                case 'html':
                    $out[$key] = wp_kses_post($val);
                    break;
                case 'code':
                    $out[$key] = is_string($val) ? wp_unslash($val) : '';
                    break;
                case 'url':
                    $out[$key] = esc_url_raw($val);
                    break;
                case 'int':
                    $out[$key] = (int) $val;
                    break;
                case 'bool':
                    $out[$key] = !empty($val);
                    break;
                case 'float':
                    $out[$key] = (float) $val;
                    break;
                case 'array':
                    $out[$key] = is_array($val) ? $val : [];
                    break;
				case 'attachment_ids':
					$ids = is_array($val) ? array_filter(array_map('absint', $val)) : [];
					$out[$key] = array_values(array_unique($ids));
					break;
                default:
                    $out[$key] = sanitize_text_field($val);
            }
        }
        return $out;
    }

    protected function register_section_routes(string $route_slug, string $domain): void {
        register_rest_route(self::API_NAMESPACE, '/settings/' . $route_slug . '/(?P<section>[a-z0-9_-]+)', [
            'methods'             => 'GET',
            'callback'            => function (\WP_REST_Request $request) use ($domain) {
                return $this->get_section_settings($request, $domain);
            },
            'permission_callback' => [$this, 'check_permission'],
        ]);

        register_rest_route(self::API_NAMESPACE, '/settings/' . $route_slug . '/(?P<section>[a-z0-9_-]+)', [
            'methods'             => 'POST',
            'callback'            => function (\WP_REST_Request $request) use ($domain) {
                return $this->save_section_settings($request, $domain);
            },
            'permission_callback' => [$this, 'check_permission'],
        ]);
    }

    protected function get_section_settings(\WP_REST_Request $request, string $domain): \WP_REST_Response {
        $provider = SchemaProvider::get_instance();
        $section = (string) $request->get_param('section');
        $schema = $provider->get_section_schema($domain, $section);

        if (!$schema) {
            return $this->error('未知的设置分组: ' . esc_html($section), 404);
        }

        return $this->success([
            'data' => $provider->read_settings($domain, $section),
            'schema' => $schema,
            'payload' => [
                'domain' => $provider->normalize_domain($domain),
                'section' => $provider->normalize_section($section),
                'version' => $schema['version'] ?? '1.0.0',
            ],
        ]);
    }

    protected function save_section_settings(\WP_REST_Request $request, string $domain): \WP_REST_Response {
        $provider = SchemaProvider::get_instance();
        $section = (string) $request->get_param('section');
        $schema = $provider->get_section_schema($domain, $section);

        if (!$schema) {
            return $this->error('未知的设置分组: ' . esc_html($section), 404);
        }

        $params = $this->get_json_params($request);
        $payload = $params['data'] ?? $params;
        if (!is_array($payload)) {
            return $this->error('无效的设置载荷');
        }

		$sanitized = $provider->sanitize_payload($domain, $payload, $section);
        $validation = $provider->validate($domain, $sanitized, $section);
        if (!$validation['valid']) {
            return $this->error(implode('; ', $validation['errors']), 422);
        }

        $provider->write_settings($domain, $sanitized, $section);

        return $this->success([
            'message' => sprintf('%s/%s 设置已保存', $provider->normalize_domain($domain), $provider->normalize_section($section)),
            'data' => $provider->read_settings($domain, $section),
            'payload' => [
                'domain' => $provider->normalize_domain($domain),
                'section' => $provider->normalize_section($section),
                'version' => $schema['version'] ?? '1.0.0',
            ],
        ]);
    }
}