490 lines
17 KiB
PHP
490 lines
17 KiB
PHP
<?php
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namespace app\common\service;
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use app\common\model\User;
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use EasyWeChat\Kernel\Encryptor;
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use think\Cache;
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use think\Log;
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/**
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* 小程序虚拟支付（代币充值）
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* 文档：https://developers.weixin.qq.com/miniprogram/dev/platform-capabilities/business-capabilities/virtual-payment.html
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* 客户端：wx.requestVirtualPayment，mode=short_series_coin
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* 服务器：/xpay/query_order 确认现金单，/xpay/currency_pay 扣减代币
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*/
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class VirtualPayService
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{
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const SESSION_PREFIX = 'wx_session_key:';
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const TRADE_PREFIX = 'vp_trade:';
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const LATEST_PREFIX = 'vp_order_latest:';
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const CACHE_TTL = 1296000; // 15天
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/**
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* 登录成功后缓存 session_key，用户态签名要用
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* @param int $userId
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* @param string $sessionKey
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*/
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public static function saveSessionKey($userId, $sessionKey)
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{
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if (!$userId || $sessionKey === '') {
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return;
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}
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Cache::set(self::SESSION_PREFIX . $userId, $sessionKey, self::CACHE_TTL);
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}
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/**
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* 生成 wx.requestVirtualPayment 参数。signData 必须原样传给客户端，不能再 JSON.stringify
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* @param string $orderNo
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* @param float|string $amountYuan
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* @param string $openid
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* @return array
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* @throws \Exception
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*/
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public static function createClientPay($orderNo, $amountYuan, $openid)
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{
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$offerId = (string)config('common.virtual_pay.offer_id');
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if ($offerId === '') {
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self::logMissingOfferId();
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throw new \Exception('未配置虚拟支付 OfferID');
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}
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$buyQuantity = self::coinQuantity($amountYuan);
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$outTradeNo = 'V' . date('ymdHis') . substr(md5(uniqid('', true)), 0, 10);
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$signData = json_encode([
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'offerId' => $offerId,
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'buyQuantity' => $buyQuantity,
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'env' => self::env(),
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'currencyType' => 'CNY',
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'outTradeNo' => $outTradeNo,
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'attach' => (string)$orderNo,
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], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
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if ($signData === false) {
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throw new \Exception('虚拟支付参数编码失败');
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}
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$sessionKey = self::sessionKeyByOpenid($openid);
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Cache::set(self::TRADE_PREFIX . $outTradeNo, (string)$orderNo, self::CACHE_TTL);
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Cache::set(self::LATEST_PREFIX . $orderNo, $outTradeNo, self::CACHE_TTL);
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Log::info('虚拟支付下单 ' . json_encode([
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'order_no' => $orderNo,
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'out_trade_no' => $outTradeNo,
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'buy_quantity' => $buyQuantity,
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'env' => self::env(),
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], JSON_UNESCAPED_UNICODE));
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return [
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'mode' => 'short_series_coin',
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'signData' => $signData,
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'paySig' => hash_hmac('sha256', 'requestVirtualPayment&' . $signData, self::appKey()),
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'signature' => hash_hmac('sha256', $signData, $sessionKey),
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];
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}
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/**
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* 现金单已支付时扣减代币并入账。没有可确认的支付单时返回 false，调用方再拉起新的支付
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* @param string $orderNo
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* @param string $openid
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* @return bool
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* @throws \Exception
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*/
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public static function settleIfPaid($orderNo, $openid)
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{
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$order = OrderService::getOne(['order_no' => $orderNo]);
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if (!$order) {
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throw new \Exception('订单不存在');
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}
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if ((int)$order->order_status !== OrderService::ORDER_STATUS_WAIT_PAY) {
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return in_array((int)$order->order_status, [
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OrderService::ORDER_STATUS_WAIT_SHIP,
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OrderService::ORDER_STATUS_SHIPPED,
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OrderService::ORDER_STATUS_FINISHED,
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], true);
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}
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$outTradeNo = Cache::get(self::LATEST_PREFIX . $orderNo);
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if (!$outTradeNo) {
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return false;
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}
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$res = self::queryOrder($openid, $outTradeNo);
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if ((int)($res['errcode'] ?? -1) !== 0) {
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Log::info('虚拟支付查单未支付 ' . json_encode([
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'order_no' => $orderNo,
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'out_trade_no' => $outTradeNo,
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'res' => $res,
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], JSON_UNESCAPED_UNICODE));
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return false;
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}
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$wxOrder = $res['order'] ?? [];
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$status = (int)($wxOrder['status'] ?? 0);
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// 2已支付待发货 3发货中 4已发货。代币由平台入账，这三种都表示现金已支付
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if (!in_array($status, [2, 3, 4], true)) {
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return false;
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}
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self::deductCoins($order, $openid, $wxOrder);
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return true;
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}
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/**
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* 处理虚拟支付消息推送
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* @param array $msg
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* @return array
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* @throws \Exception
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*/
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public static function handleMessage(array $msg)
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{
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$event = (string)($msg['Event'] ?? '');
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if ($event === 'xpay_coin_pay_notify') {
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self::finishFromCoinNotify($msg);
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return ['ErrCode' => 0, 'ErrMsg' => 'success'];
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}
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if ($event === 'xpay_refund_notify') {
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self::handleRefundNotify($msg);
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return ['ErrCode' => 0, 'ErrMsg' => 'success'];
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}
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if ($event === 'xpay_subscribe_ios_refund_query_notify') {
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return self::iosRefundQuery($msg);
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}
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Log::info('虚拟支付推送 ' . $event . ' ' . json_encode($msg, JSON_UNESCAPED_UNICODE));
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return ['ErrCode' => 0, 'ErrMsg' => 'success'];
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}
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/**
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* 解密安全模式下的消息，返回明文字符串
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* @param string $encrypt
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* @param string $msgSignature
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* @param string $nonce
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* @param string $timestamp
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* @return string
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* @throws \Exception
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*/
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public static function decryptMessage($encrypt, $msgSignature, $nonce, $timestamp)
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{
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$token = (string)config('common.virtual_pay.msg_token');
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$aesKey = (string)config('common.virtual_pay.aes_key');
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$appId = (string)config('common.wechat.app_id');
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if ($token === '' || $aesKey === '' || $appId === '') {
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throw new \Exception('未配置虚拟支付消息加解密参数');
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}
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$encryptor = new Encryptor($appId, $token, $aesKey);
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return $encryptor->decrypt($encrypt, $msgSignature, $nonce, $timestamp);
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}
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/**
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* @param string $openid
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* @param string $outTradeNo
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* @return array
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* @throws \Exception
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*/
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private static function queryOrder($openid, $outTradeNo)
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{
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return self::postXpay('/xpay/query_order', [
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'openid' => $openid,
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'env' => self::env(),
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'order_id' => (string)$outTradeNo,
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]);
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}
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/**
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* 校验现金金额后扣减代币，再把业务订单标成已支付
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* @param \think\Model $order
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* @param string $openid
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* @param array $wxOrder
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* @throws \Exception
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*/
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private static function deductCoins($order, $openid, array $wxOrder)
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{
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$paidFee = (int)($wxOrder['paid_fee'] ?? 0);
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if ($paidFee <= 0) {
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$paidFee = (int)($wxOrder['order_fee'] ?? 0);
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}
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$expect = self::amountFen($order->payment_amount);
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if ($paidFee !== $expect) {
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Log::error('虚拟支付金额不一致 ' . json_encode([
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'order_no' => $order->order_no,
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'paid_fee' => $paidFee,
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'expect' => $expect,
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], JSON_UNESCAPED_UNICODE));
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throw new \Exception('支付金额与订单不一致');
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}
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$buyQuantity = self::coinQuantity($order->payment_amount);
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$res = self::postXpay('/xpay/currency_pay', [
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'openid' => $openid,
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'env' => self::env(),
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'user_ip' => self::userIp(),
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'amount' => $buyQuantity,
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'order_id' => (string)$order->order_no,
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'payitem' => json_encode([[
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'productid' => 'order',
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'unit_price' => $buyQuantity,
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'quantity' => 1,
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]], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES),
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'remark' => '订单' . $order->order_no,
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], self::sessionKeyByOpenid($openid));
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$errcode = (int)($res['errcode'] ?? -1);
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// 268490004：重复扣减，上一笔已经成功
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if ($errcode !== 0 && $errcode !== 268490004) {
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if ($errcode === 268490006) {
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throw new \Exception('支付确认中，请稍后在订单里再次点击支付，不会重复扣款');
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}
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throw new \Exception('代币扣减失败：' . ($res['errmsg'] ?? '未知错误'));
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}
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$transactionId = (string)($wxOrder['wxpay_order_id'] ?? ($wxOrder['channel_order_id'] ?? ''));
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$paidTime = (int)($wxOrder['paid_time'] ?? 0);
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OrderService::finishPaid(
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$order->order_no,
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$expect,
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$transactionId,
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'XPAY',
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$paidTime > 0 ? $paidTime : time(),
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'settle'
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);
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}
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/**
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* @param array $msg
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* @throws \Exception
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*/
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private static function finishFromCoinNotify(array $msg)
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{
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$outTradeNo = (string)($msg['OutTradeNo'] ?? '');
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$orderNo = Cache::get(self::TRADE_PREFIX . $outTradeNo) ?: $outTradeNo;
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$coinInfo = isset($msg['CoinInfo']) && is_array($msg['CoinInfo']) ? $msg['CoinInfo'] : [];
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$order = OrderService::getOne(['order_no' => $orderNo]);
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if (!$order) {
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Log::error('虚拟支付代币通知未找到订单 ' . $outTradeNo);
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return;
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}
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$fen = isset($coinInfo['ActualPrice']) ? (int)$coinInfo['ActualPrice'] : self::amountFen($order->payment_amount);
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$payInfo = isset($msg['WeChatPayInfo']) && is_array($msg['WeChatPayInfo']) ? $msg['WeChatPayInfo'] : [];
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$paidTime = (int)($payInfo['PaidTime'] ?? 0);
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OrderService::finishPaid(
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$orderNo,
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$fen,
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(string)($payInfo['TransactionId'] ?? ''),
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'XPAY',
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$paidTime > 0 ? $paidTime : time(),
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'coin_notify'
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);
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}
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/**
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* 未发货的订单退款成功后改为已退款。已发货或需求单只记日志，避免把已结算合同改回去
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* @param array $msg
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*/
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private static function handleRefundNotify(array $msg)
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{
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Log::info('虚拟支付退款通知 ' . json_encode($msg, JSON_UNESCAPED_UNICODE));
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if ((int)($msg['RetCode'] ?? 1) !== 0) {
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return;
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}
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$mchOrderId = (string)($msg['MchOrderId'] ?? '');
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$orderNo = Cache::get(self::TRADE_PREFIX . $mchOrderId) ?: $mchOrderId;
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$order = OrderService::getOne(['order_no' => $orderNo]);
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if (!$order) {
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Log::error('虚拟支付退款未找到订单 ' . $mchOrderId);
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return;
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}
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if ((int)$order->order_status === OrderService::ORDER_STATUS_WAIT_SHIP
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&& (int)$order->order_type === OrderService::ORDER_TYPE_SOFTWARE) {
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OrderService::where('order_no', $order->order_no)->update([
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'order_status' => OrderService::ORDER_STATUS_REFUNDED,
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]);
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}
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}
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/**
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* iOS 退款问询：已交付建议拒绝，未交付建议退款。最终由苹果决定
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* @param array $msg
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* @return array
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*/
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private static function iosRefundQuery(array $msg)
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{
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$payOrderId = (string)($msg['pay_order_id'] ?? ($msg['PayOrderId'] ?? ''));
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$orderNo = $payOrderId ? (Cache::get(self::TRADE_PREFIX . $payOrderId) ?: $payOrderId) : '';
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$order = $orderNo ? OrderService::getOne(['order_no' => $orderNo]) : null;
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$delivered = $order && in_array((int)$order->order_status, [
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OrderService::ORDER_STATUS_SHIPPED,
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OrderService::ORDER_STATUS_FINISHED,
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], true);
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if ($delivered) {
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return [
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'result_code' => 1,
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'result_info' => '已交付',
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'evidence' => '虚拟商品已交付，建议拒绝退款',
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];
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}
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return [
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'result_code' => 0,
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'result_info' => '未交付',
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'evidence' => '订单未交付，建议退款',
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];
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}
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/**
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* @param string $uri
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* @param array $payload
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* @param string $sessionKey 需要用户态签名的接口才传
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* @return array
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* @throws \Exception
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*/
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private static function postXpay($uri, array $payload, $sessionKey = '')
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{
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$body = json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
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if ($body === false) {
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throw new \Exception('虚拟支付参数编码失败');
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}
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// access_token 由小程序 HTTP 客户端自动附在 query 上，不参与 pay_sig
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$query = [
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'pay_sig' => hash_hmac('sha256', $uri . '&' . $body, self::appKey()),
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];
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if ($sessionKey !== '') {
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$query['signature'] = hash_hmac('sha256', $body, $sessionKey);
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}
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try {
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$service = new EasyWeChatService();
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$response = $service->app->getClient()->post($uri, [
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'query' => $query,
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'headers' => ['Content-Type' => 'application/json'],
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'body' => $body,
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]);
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$result = $response->toArray(false);
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} catch (\Exception $e) {
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Log::error('虚拟支付请求异常 ' . $uri . ' ' . $e->getMessage());
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throw new \Exception('虚拟支付请求失败');
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}
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Log::info('虚拟支付请求 ' . $uri . ' ' . json_encode([
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'payload' => $payload,
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'res' => $result,
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], JSON_UNESCAPED_UNICODE));
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return is_array($result) ? $result : [];
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}
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/**
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* @param string $openid
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* @return string
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* @throws \Exception
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*/
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private static function sessionKeyByOpenid($openid)
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{
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$userId = User::where('openid', $openid)->value('id');
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$sessionKey = $userId ? Cache::get(self::SESSION_PREFIX . $userId) : '';
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if (!$sessionKey) {
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throw new \Exception('登录态已过期，请退出小程序后重新进入再支付');
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}
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return (string)$sessionKey;
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}
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/**
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* OfferID 为空时记下 .env 有没有被读到，不记录密钥内容
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*/
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private static function logMissingOfferId()
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{
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$envFile = (defined('ROOT_PATH') ? ROOT_PATH : '') . '.env';
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$exists = $envFile !== '.env' && is_file($envFile);
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$section = '';
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$found = null;
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if ($exists) {
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$lines = file($envFile, FILE_IGNORE_NEW_LINES);
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if (is_array($lines)) {
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foreach ($lines as $line) {
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$trim = trim($line);
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if ($trim === '' || $trim[0] === ';' || $trim[0] === '#') {
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continue;
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}
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if (preg_match('/^\[(.+)\]$/', $trim, $sectionMatch)) {
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$section = $sectionMatch[1];
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continue;
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}
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if (preg_match('/^vp_offer_id\s*=\s*(.*)$/', $trim, $valueMatch)) {
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$value = trim($valueMatch[1], " \t\"'");
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$found = [
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'section' => $section,
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'len' => strlen($value),
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];
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}
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}
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}
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}
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$fromEnv = getenv('PHP_WECHAT_VP_OFFER_ID');
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$virtualPay = config('common.virtual_pay');
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Log::error('虚拟支付 OfferID 为空 ' . json_encode([
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'env_file' => $envFile,
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'env_exists' => $exists,
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'file_item' => $found ?: 'missing',
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'getenv' => $fromEnv === false ? 'false' : ('len:' . strlen(trim((string)$fromEnv))),
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'config_keys' => is_array($virtualPay) ? array_keys($virtualPay) : gettype($virtualPay),
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], JSON_UNESCAPED_UNICODE));
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}
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/**
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* @param float|string $amountYuan
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* @return int
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* @throws \Exception
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*/
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private static function coinQuantity($amountYuan)
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{
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$fen = self::amountFen($amountYuan);
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if ($fen < 1) {
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throw new \Exception('支付金额不能小于0.01元');
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}
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$coinPerYuan = (int)config('common.virtual_pay.coin_per_yuan');
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if ($coinPerYuan < 1) {
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$coinPerYuan = 1;
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}
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if (($fen * $coinPerYuan) % 100 !== 0) {
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throw new \Exception('订单金额须为整数元才能按1元=1代币支付');
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}
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return intdiv($fen * $coinPerYuan, 100);
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}
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/**
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* @param float|string $amountYuan
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* @return int
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*/
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private static function amountFen($amountYuan)
|
||
{
|
||
return (int)bcmul(sprintf('%.2f', $amountYuan), '100', 0);
|
||
}
|
||
|
||
/**
|
||
* @return int
|
||
*/
|
||
private static function env()
|
||
{
|
||
return (int)config('common.virtual_pay.env') === 1 ? 1 : 0;
|
||
}
|
||
|
||
/**
|
||
* @return string
|
||
* @throws \Exception
|
||
*/
|
||
private static function appKey()
|
||
{
|
||
$config = config('common.virtual_pay');
|
||
$key = self::env() === 1 ? (string)($config['sandbox_app_key'] ?? '') : (string)($config['app_key'] ?? '');
|
||
if ($key === '') {
|
||
throw new \Exception('未配置虚拟支付 AppKey');
|
||
}
|
||
|
||
return $key;
|
||
}
|
||
|
||
/**
|
||
* @return string
|
||
*/
|
||
private static function userIp()
|
||
{
|
||
$ip = request()->ip();
|
||
if (!filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) {
|
||
return '127.0.0.1';
|
||
}
|
||
|
||
return $ip;
|
||
}
|
||
}
|