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server/internal/library/payment/wxpay/handle.go

@@ -0,0 +1,311 @@
+package wxpay
+
+import (
+	"context"
+	"crypto/rsa"
+	"github.com/go-pay/gopay"
+	"github.com/go-pay/gopay/pkg/xpem"
+	"github.com/go-pay/gopay/wechat/v3"
+	"github.com/gogf/gf/v2/errors/gerror"
+	"github.com/gogf/gf/v2/net/ghttp"
+	"github.com/gogf/gf/v2/os/gtime"
+	"hotgo/internal/consts"
+	weOpen "hotgo/internal/library/wechat"
+	"hotgo/internal/model"
+	"hotgo/internal/model/input/payin"
+	"time"
+)
+
+func New(config *model.PayConfig) *wxPay {
+	return &wxPay{
+		config: config,
+	}
+}
+
+type wxPay struct {
+	config *model.PayConfig
+}
+
+// Refund 订单退款
+func (h *wxPay) Refund(ctx context.Context, in payin.RefundInp) (res *payin.RefundModel, err error) {
+	client, err := GetClient(h.config)
+	if err != nil {
+		return nil, err
+	}
+
+	bm := make(gopay.BodyMap)
+	bm.Set("out_trade_no", in.Pay.OutTradeNo).
+		Set("out_refund_no", in.RefundSn).
+		Set("reason", in.Remark).
+		SetBodyMap("amount", func(bm gopay.BodyMap) {
+			bm.Set("total", int64(in.Pay.PayAmount*100)).
+				Set("currency", "CNY").
+				Set("refund", int64(in.RefundMoney*100))
+		})
+
+	refund, err := client.V3Refund(ctx, bm)
+	if err != nil {
+		return
+	}
+
+	if refund.Error != "" {
+		err = gerror.Newf("微信支付发起退款失败,原因：%v", refund.Response.Status)
+		return
+	}
+
+	if refund.Response.Status != "SUCCESS" && refund.Response.Status != "PROCESSING" {
+		err = gerror.Newf("微信支付发起退款失败,状态码：%v", refund.Response.Status)
+		return
+	}
+	return
+}
+
+// Notify 异步通知
+func (h *wxPay) Notify(ctx context.Context, in payin.NotifyInp) (res *payin.NotifyModel, err error) {
+	notifyReq, err := wechat.V3ParseNotify(ghttp.RequestFromCtx(ctx).Request)
+	if err != nil {
+		return
+	}
+
+	client, err := GetClient(h.config)
+	if err != nil {
+		return
+	}
+
+	// 获取微信平台证书
+	certMap, err := getPublicKeyMap(client)
+	if err != nil {
+		return
+	}
+
+	// 验证异步通知的签名
+	if err = notifyReq.VerifySignByPKMap(certMap); err != nil {
+		return
+	}
+
+	notify, err := notifyReq.DecryptCipherText(h.config.WxPayAPIv3Key)
+	if err != nil {
+		return
+	}
+
+	if notify.TradeState != "SUCCESS" {
+		err = gerror.New("非交易支付成功状态，无需处理！")
+		// 这里如果相对非交易支付成功状态进行处理，可自行调整此处逻辑
+		// ...
+		return
+	}
+
+	if notify.OutTradeNo == "" {
+		err = gerror.New("订单中没有找到商户单号！")
+		return
+	}
+
+	res = new(payin.NotifyModel)
+	res.TransactionId = notify.TransactionId
+	res.OutTradeNo = notify.OutTradeNo
+	res.PayAt = gtime.New(notify.SuccessTime)
+	res.ActualAmount = float64(notify.Amount.PayerTotal / 100) // 转为元，和系统内保持一至
+
+	return
+}
+
+// CreateOrder 创建订单
+func (h *wxPay) CreateOrder(ctx context.Context, in payin.CreateOrderInp) (res *payin.CreateOrderModel, err error) {
+	switch in.Pay.TradeType {
+	case consts.TradeTypeWxScan:
+		return h.scan(ctx, in)
+	case consts.TradeTypeWxMP, consts.TradeTypeWxMini:
+		return h.jsapi(ctx, in)
+	case consts.TradeTypeWxH5:
+		return h.h5(ctx, in)
+	default:
+		err = gerror.Newf("暂未支持的交易方式：%v", in.Pay.TradeType)
+	}
+
+	return
+}
+
+func GetClient(config *model.PayConfig) (client *wechat.ClientV3, err error) {
+	client, err = wechat.NewClientV3(config.WxPayMchId, config.WxPaySerialNo, config.WxPayAPIv3Key, config.WxPayPrivateKey)
+	if err != nil {
+		return
+	}
+
+	if _, _, err = client.GetAndSelectNewestCertALL(); err != nil {
+		return nil, err
+	}
+
+	serialNo, snCertMap, err := client.GetAndSelectNewestCert()
+	if err != nil {
+		return
+	}
+	snPkMap := make(map[string]*rsa.PublicKey)
+	for sn, cert := range snCertMap {
+		pubKey, err := xpem.DecodePublicKey([]byte(cert))
+		if err != nil {
+			return nil, err
+		}
+		snPkMap[sn] = pubKey
+	}
+
+	client.SnCertMap = snPkMap
+	client.WxSerialNo = serialNo
+
+	// 打开Debug开关，输出日志，默认关闭
+	if config.Debug {
+		client.DebugSwitch = gopay.DebugOn
+	}
+	return
+}
+
+func getPublicKeyMap(client *wechat.ClientV3) (wxPublicKeyMap map[string]*rsa.PublicKey, err error) {
+	serialNo, snCertMap, err := client.GetAndSelectNewestCert()
+	if err != nil {
+		return
+	}
+
+	snPkMap := make(map[string]*rsa.PublicKey)
+	for sn, cert := range snCertMap {
+		pubKey, err := xpem.DecodePublicKey([]byte(cert))
+		if err != nil {
+			return nil, err
+		}
+		snPkMap[sn] = pubKey
+	}
+	client.SnCertMap = snPkMap
+	client.WxSerialNo = serialNo
+
+	wxPublicKeyMap = client.WxPublicKeyMap()
+	return
+}
+
+// scan 创建扫码支付订单
+func (h *wxPay) scan(ctx context.Context, in payin.CreateOrderInp) (res *payin.CreateOrderModel, err error) {
+	client, err := GetClient(h.config)
+	if err != nil {
+		return
+	}
+
+	bm := make(gopay.BodyMap)
+	bm.Set("appid", h.config.WxPayAppId).
+		Set("mchid", h.config.WxPayMchId).
+		Set("description", in.Pay.Subject).
+		Set("out_trade_no", in.Pay.OutTradeNo).
+		Set("time_expire", time.Now().Add(2*time.Hour).Format(time.RFC3339)).
+		Set("notify_url", in.Pay.NotifyUrl).
+		SetBodyMap("amount", func(bm gopay.BodyMap) {
+			bm.Set("total", int64(in.Pay.PayAmount*100)).
+				Set("currency", "CNY")
+		})
+
+	wxRsp, err := client.V3TransactionNative(ctx, bm)
+	if err != nil {
+		return
+	}
+
+	if wxRsp.Code != 0 {
+		err = gerror.New(wxRsp.Error)
+		return
+	}
+
+	res = new(payin.CreateOrderModel)
+	res.TradeType = in.Pay.TradeType
+	res.PayURL = wxRsp.Response.CodeUrl
+	res.OutTradeNo = in.Pay.OutTradeNo
+	return
+}
+
+// h5 创建H5支付订单
+func (h *wxPay) h5(ctx context.Context, in payin.CreateOrderInp) (res *payin.CreateOrderModel, err error) {
+	client, err := GetClient(h.config)
+	if err != nil {
+		return
+	}
+
+	// 初始化参数Map
+	bm := make(gopay.BodyMap)
+	bm.Set("appid", h.config.WxPayAppId).
+		Set("mchid", h.config.WxPayMchId).
+		Set("description", in.Pay.Subject).
+		Set("out_trade_no", in.Pay.OutTradeNo).
+		Set("time_expire", time.Now().Add(2*time.Hour).Format(time.RFC3339)).
+		Set("notify_url", in.Pay.NotifyUrl).
+		SetBodyMap("amount", func(b gopay.BodyMap) {
+			b.Set("total", int64(in.Pay.PayAmount*100)).
+				Set("currency", "CNY")
+		}).
+		SetBodyMap("scene_info", func(b gopay.BodyMap) {
+			b.Set("payer_client_ip", in.Pay.CreateIp).
+				SetBodyMap("h5_info", func(b gopay.BodyMap) {
+					b.Set("type", "Wap")
+				})
+		})
+
+	// 请求支付下单，成功后得到结果
+	wxRsp, err := client.V3TransactionH5(ctx, bm)
+	if err != nil {
+		return
+	}
+
+	if wxRsp.Code != 0 {
+		err = gerror.New(wxRsp.Error)
+		return
+	}
+
+	res = new(payin.CreateOrderModel)
+	res.TradeType = in.Pay.TradeType
+	res.PayURL = wxRsp.Response.H5Url
+	res.OutTradeNo = in.Pay.OutTradeNo
+	return
+}
+
+// jsapi 创建jsapi支付订单
+func (h *wxPay) jsapi(ctx context.Context, in payin.CreateOrderInp) (res *payin.CreateOrderModel, err error) {
+	jsApi := new(payin.JSAPI)
+	jsApi.Config, err = weOpen.GetJsConfig(ctx, in.Pay.ReturnUrl)
+	if err != nil {
+		return
+	}
+
+	client, err := GetClient(h.config)
+	if err != nil {
+		return
+	}
+
+	bm := make(gopay.BodyMap)
+	bm.Set("appid", h.config.WxPayAppId).
+		Set("mchid", h.config.WxPayMchId).
+		Set("description", in.Pay.Subject).
+		Set("out_trade_no", in.Pay.OutTradeNo).
+		Set("time_expire", time.Now().Add(2*time.Hour).Format(time.RFC3339)).
+		Set("notify_url", in.Pay.NotifyUrl).
+		SetBodyMap("amount", func(bm gopay.BodyMap) {
+			bm.Set("total", int64(in.Pay.PayAmount*100)).
+				Set("currency", "CNY")
+		}).
+		SetBodyMap("payer", func(bm gopay.BodyMap) {
+			bm.Set("openid", in.Pay.Openid)
+		})
+
+	wxRsp, err := client.V3TransactionJsapi(ctx, bm)
+	if err != nil {
+		return
+	}
+
+	if wxRsp.Code != 0 {
+		err = gerror.New(wxRsp.Error)
+		return
+	}
+
+	js, err := client.PaySignOfJSAPI(h.config.WxPayAppId, wxRsp.Response.PrepayId)
+	if err != nil {
+		return
+	}
+	jsApi.Params = js
+
+	res = new(payin.CreateOrderModel)
+	res.TradeType = in.Pay.TradeType
+	res.OutTradeNo = in.Pay.OutTradeNo
+	res.JsApi = jsApi
+	return
+}

server/internal/library/payment/wxpay/model.go

@@ -0,0 +1 @@
+package wxpay