428 lines
17 KiB
PHP
428 lines
17 KiB
PHP
<?php
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/**
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* @package AKSRT
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*/
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namespace AKSRT\Payment;
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defined('ABSPATH') || exit;
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/**
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* 支付网关管理器（注册/回调路由/到账）。
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*/
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class Gateway {
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private static $instance = null;
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private $gateways = [];
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public static function get_instance(): self {
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if (null === self::$instance) self::$instance = new self();
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return self::$instance;
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}
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/**
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* 注册网关
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*/
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public function register(string $id, GatewayInterface $gateway): void {
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$this->gateways[$id] = $gateway;
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}
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/**
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* 获取网关
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*/
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public function get_gateway(string $id): ?GatewayInterface {
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return $this->gateways[$id] ?? null;
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}
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/**
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* 获取所有已注册网关
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*
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* @return GatewayInterface[]
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*/
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public function get_all(): array {
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return $this->gateways;
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}
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/**
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* 获取可用网关列表（已配置的）
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*/
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public function get_available(): array {
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$available = [];
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foreach ($this->gateways as $id => $gateway) {
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if ($gateway->is_configured()) {
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$available[$id] = $gateway;
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}
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}
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return $available;
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}
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/**
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* 获取网关状态摘要（用于后台展示）
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*/
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public function get_status_summary(): array {
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$summary = [];
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foreach ($this->gateways as $id => $gateway) {
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$summary[] = [
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'id' => $id,
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'name' => $gateway->get_name(),
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'configured' => $gateway->is_configured(),
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'available' => $gateway->is_configured(),
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];
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}
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return $summary;
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}
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/**
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* 绑定支付回调路由。必须在 functions.php 中初始化。
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*
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* 此前网关 create_payment() 把 notify_url/return_url 指向
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* /wp-json/aksrt/v1/payment/{gateway}/{notify|return|cancel}，但这些路由
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* 从未注册，导致所有跳转型网关（支付宝/微信/PayPal/Stripe）无法完成支付。
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*/
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public function init(): void {
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add_action('rest_api_init', [$this, 'register_routes']);
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}
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public function register_routes(): void {
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$args = [
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'methods' => ['GET', 'POST'],
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'permission_callback' => '__return_true', // 真实性由各网关签名校验保证
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'args' => [
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'gateway' => ['sanitize_callback' => 'sanitize_key'],
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],
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];
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register_rest_route('aksrt/v1', '/payment/(?P<gateway>[a-z0-9_]+)/notify', array_merge($args, [
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'callback' => [$this, 'handle_notify'],
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]));
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register_rest_route('aksrt/v1', '/payment/(?P<gateway>[a-z0-9_]+)/return', array_merge($args, [
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'callback' => [$this, 'handle_return'],
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]));
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register_rest_route('aksrt/v1', '/payment/(?P<gateway>[a-z0-9_]+)/cancel', array_merge($args, [
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'callback' => [$this, 'handle_cancel'],
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]));
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}
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/**
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* 异步通知（服务器到服务器）。验签 → 到账 → 输出网关期望的 ACK。
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*/
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public function handle_notify(\WP_REST_Request $request) {
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$gateway_id = sanitize_key((string) $request->get_param('gateway'));
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$gateway = $this->get_gateway($gateway_id);
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if (!$gateway) {
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return new \WP_REST_Response('gateway not found', 404);
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}
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$verify = $gateway->verify_callback($request);
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$verified = !empty($verify['success']);
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$paid = $verified && ($verify['status'] ?? '') === 'paid';
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$processed = $verified;
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if ($paid) {
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// Only ACK paid notifications after the order was actually synchronized.
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$processed = $this->complete_order($gateway_id, $verify);
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}
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// 网关各自要求的 ACK 格式
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if ($gateway_id === 'wechatpay' && method_exists($gateway, 'output_callback_response')) {
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$gateway->output_callback_response(['success' => $processed]); // exit
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}
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if ($gateway_id === 'alipay' || str_starts_with($gateway_id, 'epay')) {
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// 支付宝 / 易支付异步通知要求返回纯文本 success，否则会重复通知
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if (method_exists($gateway, 'output_callback_response')) {
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$gateway->output_callback_response(['success' => $processed]); // exit
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}
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header('Content-Type: text/plain; charset=utf-8');
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echo $processed ? 'success' : 'fail';
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exit;
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}
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// Stripe / PayPal webhook：200 表示已接收；处理失败返回 400 触发重试
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return new \WP_REST_Response(['received' => $processed], $processed ? 200 : 400);
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}
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/**
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* 用户浏览器同步返回。尽力确认到账（兜底异步通知延迟），再跳回订单中心。
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*/
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public function handle_return(\WP_REST_Request $request) {
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$gateway_id = sanitize_key((string) $request->get_param('gateway'));
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// Providers echo back whatever number we submitted, which for a re-pay is an
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// attempt-suffixed out_trade_no. Map it to the local order for query + redirect.
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$provider_ref = sanitize_text_field((string) ($request->get_param('order')
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?: $request->get_param('out_trade_no')
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?: ''));
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$order_number = $this->local_order_number($provider_ref);
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$gateway = $this->get_gateway($gateway_id);
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$status = 'pending';
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if ($gateway) {
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if ($gateway_id === 'alipay' || str_starts_with($gateway_id, 'epay')) {
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// 支付宝 / 易支付同步返回带签名参数，可直接验签作为到账兜底
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$verify = $gateway->verify_callback($request);
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if (!empty($verify['success'])) {
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if ($order_number === '') {
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$order_number = $this->local_order_number(
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sanitize_text_field((string) ($verify['order_number'] ?? ''))
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);
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}
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if (($verify['status'] ?? '') === 'paid' && $this->complete_order($gateway_id, $verify)) {
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$status = 'success';
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} elseif ($order_number !== '') {
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// Synchronous returns generally omit trade_status; query after signature verification.
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$query = $gateway->query_status($provider_ref !== '' ? $provider_ref : $order_number);
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if (!empty($query['success']) && ($query['status'] ?? '') === 'paid') {
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if (empty($query['order_number'])) {
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$query['order_number'] = $order_number;
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}
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if ($this->complete_order($gateway_id, $query)) {
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$status = 'success';
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}
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}
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}
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}
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} elseif ($gateway_id === 'paypal' && method_exists($gateway, 'capture_order')) {
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// PayPal v2：用户批准后在 return 时捕获（token = PayPal 订单号）
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$paypal_order_id = sanitize_text_field((string) ($request->get_param('token') ?: ''));
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if ($paypal_order_id !== '') {
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$cap = $gateway->capture_order($paypal_order_id);
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if (!empty($cap['success']) && ($cap['status'] ?? '') === 'paid') {
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$captured_ref = sanitize_text_field((string) ($cap['order_number'] ?? ''));
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$captured_order = $this->local_order_number($captured_ref);
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if ($captured_order === ''
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|| ($order_number !== '' && !hash_equals($order_number, $captured_order))) {
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$this->redirect_to_orders($order_number, 'pending');
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return null;
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}
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$order_number = $captured_order;
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if ($this->complete_order($gateway_id, $cap)) {
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$status = 'success';
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}
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}
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}
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} elseif ($order_number !== '') {
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// 其余网关：用返回时的 provider ref 查询该次尝试；local number 仅用于跳转。
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$q = $gateway->query_status($provider_ref !== '' ? $provider_ref : $order_number);
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if (!empty($q['success']) && ($q['status'] ?? '') === 'paid') {
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if (empty($q['order_number'])) {
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$q['order_number'] = $order_number;
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}
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if ($this->complete_order($gateway_id, $q)) {
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$status = 'success';
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}
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}
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}
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}
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$this->redirect_to_orders($order_number, $status);
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return null;
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}
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/**
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* 用户取消支付，跳回订单中心。
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*/
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public function handle_cancel(\WP_REST_Request $request) {
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$provider_ref = sanitize_text_field((string) ($request->get_param('order')
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?: $request->get_param('out_trade_no')
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?: ''));
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$this->redirect_to_orders($this->local_order_number($provider_ref), 'cancelled');
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return null;
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}
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/**
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* Map a provider out_trade_no back to the local order number (identity when unknown).
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*/
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private function local_order_number(string $provider_ref): string {
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if ($provider_ref === '' || !class_exists('AKSRT\\Payment\\OrderRepository')) {
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return $provider_ref;
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}
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$order = OrderRepository::get_instance()->resolve_by_out_trade_no($provider_ref);
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if (!$order) {
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return $provider_ref;
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}
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return sanitize_text_field((string) ($order['order_number'] ?? $provider_ref));
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}
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/**
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* Whether a pending order can be reconciled against an external provider.
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*
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* This is the single gate used by the order view and the actual reconcile
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* operation, so ordinary detail reads never trigger provider I/O.
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*
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* @param array<string,mixed>|null $order
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*/
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public function needs_reconciliation(?array $order): bool {
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return null !== $this->reconciliation_gateway($order);
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}
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/**
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* Reconcile a pending external order against the configured provider.
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*
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* @param array<string,mixed>|null $order
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*/
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public function reconcile_order(string $order_number, ?array $order = null): ?array {
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if ($order_number === '' || !class_exists('AKSRT\\Payment\\OrderRepository')) {
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return $order;
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}
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$repo = OrderRepository::get_instance();
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$order = is_array($order) ? $order : $repo->get($order_number);
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$gateway = $this->reconciliation_gateway($order);
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if (!$gateway) {
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return $order;
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}
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$gateway_id = sanitize_key((string) ($order['payment_method'] ?? ''));
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$throttle_key = 'aksrt_reconcile_' . hash('sha256', $order_number);
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if (get_transient($throttle_key)) {
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return $order;
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}
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set_transient($throttle_key, 1, 5);
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$lock = PaymentAttemptLock::acquire('reconcile_' . $order_number);
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if ($lock === false) {
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return $repo->get($order_number) ?: $order;
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}
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try {
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$provider_ref = OrderRepository::provider_out_trade_no($order);
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$query = $gateway->query_status($provider_ref);
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if (!empty($query['success']) && ($query['status'] ?? '') === 'paid') {
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if (empty($query['order_number'])) {
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$query['order_number'] = $provider_ref;
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}
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$this->complete_order($gateway_id, $query);
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}
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} catch (\Throwable $e) {
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if (defined('WP_DEBUG') && WP_DEBUG) {
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error_log(sprintf('[AKSRT Payment] reconcile failed order=%s gateway=%s: %s', $order_number, $gateway_id, $e->getMessage()));
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}
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} finally {
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PaymentAttemptLock::release('reconcile_' . $order_number, $lock);
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}
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return $repo->get($order_number) ?: $order;
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}
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/**
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* @param array<string,mixed>|null $order
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*/
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private function reconciliation_gateway(?array $order): ?GatewayInterface {
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if (!is_array($order) || !in_array((string) ($order['status'] ?? ''), [Order::STATUS_CREATED, Order::STATUS_PENDING], true)) {
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return null;
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}
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$gateway_id = sanitize_key((string) ($order['payment_method'] ?? ''));
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if ($gateway_id === '' || in_array($gateway_id, ['balance', 'points', 'manual_review'], true)) {
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return null;
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}
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$gateway = $this->get_gateway($gateway_id);
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return $gateway && $gateway->is_configured() ? $gateway : null;
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}
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/**
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* 幂等、带金额校验的订单完成。仅由验签通过的回调调用。
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*
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* @param string $gateway_id 网关 ID
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* @param array $verify 网关 verify_callback / query 结果
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* @return bool
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*/
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public function complete_order(string $gateway_id, array $verify): bool {
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$provider_out_trade_no = sanitize_text_field((string) ($verify['order_number'] ?? ''));
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if ($provider_out_trade_no === '' || !class_exists('AKSRT\\Payment\\OrderRepository')) {
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return false;
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}
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$repo = OrderRepository::get_instance();
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// Callbacks may carry attempt-suffixed out_trade_no (…P2); map back to local order.
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$order = $repo->resolve_by_out_trade_no($provider_out_trade_no);
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if (!$order) {
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return false;
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}
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$order_number = sanitize_text_field((string) ($order['order_number'] ?? ''));
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if ($order_number === '') {
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return false;
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}
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$stored_gateway = sanitize_key((string) ($order['payment_method'] ?? ''));
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if ($stored_gateway === '' || !hash_equals($stored_gateway, sanitize_key($gateway_id))) {
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return false;
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}
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// Provider-confirmed external payments must include an exact amount and transaction ID.
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$expected_currency = strtoupper((string) ($order['currency'] ?? ''));
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$paid_currency = strtoupper(sanitize_key((string) ($verify['currency'] ?? '')));
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$expected = (float) ($order['amount'] ?? 0);
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$paid_amount = (float) ($verify['amount'] ?? 0);
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$transaction_id = sanitize_text_field((string) ($verify['transaction_id'] ?? ''));
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if ($expected <= 0
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|| $paid_amount <= 0
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|| $transaction_id === ''
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|| $expected_currency === ''
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|| $paid_currency === ''
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|| !hash_equals($expected_currency, $paid_currency)
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|| abs($expected - $paid_amount) > 0.01) {
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if (defined('WP_DEBUG') && WP_DEBUG) {
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error_log(sprintf(
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'[AKSRT Payment] invalid completion order=%s out_trade_no=%s expected=%.2f %s paid=%.2f %s transaction=%s gateway=%s',
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$order_number,
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$provider_out_trade_no,
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$expected,
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$expected_currency,
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$paid_amount,
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$paid_currency,
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$transaction_id !== '' ? 'present' : 'missing',
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$gateway_id
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));
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}
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return false;
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}
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$current = (string) ($order['status'] ?? '');
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// 幂等：仅同一交易号的重复回调可视为成功。不同交易号意味着
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// 用户可能重复付款，不能静默 ACK 为已正确同步。
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if (in_array($current, ['paid', 'delivered', 'completed'], true)) {
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$stored_transaction = sanitize_text_field((string) ($order['payment_transaction_id'] ?? ''));
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return $stored_transaction !== '' && hash_equals($stored_transaction, $transaction_id);
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}
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// 只允许从未支付态完成
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if (!in_array($current, ['created', 'pending'], true)) {
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return false;
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}
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return $repo->update_status($order_number, Order::STATUS_PAID, [
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'payment_method' => $gateway_id,
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'payment_transaction_id' => $transaction_id,
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'note' => __('支付网关回调确认到账。', 'aksrt'),
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]);
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}
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private function redirect_to_orders(string $order_number, string $status): void {
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$url = add_query_arg(array_filter([
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'payment' => sanitize_key($status),
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'order' => $order_number,
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]), $this->orders_page_url());
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nocache_headers();
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wp_safe_redirect($url);
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exit;
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}
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private function orders_page_url(): string {
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$pages = get_posts([
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'post_type' => 'page',
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'post_status' => 'publish',
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'posts_per_page' => 1,
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'meta_key' => '_wp_page_template',
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'meta_value' => 'templates/pages/page-orders.php',
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'fields' => 'ids',
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'no_found_rows' => true,
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]);
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if (!empty($pages)) {
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return (string) get_permalink((int) $pages[0]);
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}
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return home_url('/orders/');
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}
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}
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