Add alipay provider.

object/cert.go

@@ -33,8 +33,10 @@ type Cert struct {
 	BitSize         int    `json:"bitSize"`
 	ExpireInYears   int    `json:"expireInYears"`
 
-	PublicKey  string `xorm:"mediumtext" json:"publicKey"`
-	PrivateKey string `xorm:"mediumtext" json:"privateKey"`
+	PublicKey              string `xorm:"mediumtext" json:"publicKey"`
+	PrivateKey             string `xorm:"mediumtext" json:"privateKey"`
+	AuthorityPublicKey     string `xorm:"mediumtext" json:"authorityPublicKey"`
+	AuthorityRootPublicKey string `xorm:"mediumtext" json:"authorityRootPublicKey"`
 }
 
 func GetMaskedCert(cert *Cert) *Cert {

object/payment.go

@@ -124,6 +124,23 @@ func DeletePayment(payment *Payment) bool {
 	return affected != 0
 }
 
+func NotifyPayment(id string, state string) bool {
+	owner, name := util.GetOwnerAndNameFromId(id)
+	payment := getPayment(owner, name)
+	if payment == nil {
+		return false
+	}
+
+	payment.State = state
+
+	affected, err := adapter.Engine.ID(core.PK{owner, name}).AllCols().Update(payment)
+	if err != nil {
+		panic(err)
+	}
+
+	return affected != 0
+}
+
 func (payment *Payment) GetId() string {
 	return fmt.Sprintf("%s/%s", payment.Owner, payment.Name)
 }

object/product.go

@@ -17,6 +17,7 @@ package object
 import (
 	"fmt"
 
+	"github.com/casdoor/casdoor/pp"
 	"github.com/casdoor/casdoor/util"
 	"xorm.io/core"
 )
@@ -31,7 +32,7 @@ type Product struct {
 	Detail    string   `xorm:"varchar(100)" json:"detail"`
 	Tag       string   `xorm:"varchar(100)" json:"tag"`
 	Currency  string   `xorm:"varchar(100)" json:"currency"`
-	Price     int      `json:"price"`
+	Price     float64  `json:"price"`
 	Quantity  int      `json:"quantity"`
 	Sold      int      `json:"sold"`
 	Providers []string `xorm:"varchar(100)" json:"providers"`
@@ -128,3 +129,47 @@ func DeleteProduct(product *Product) bool {
 func (product *Product) GetId() string {
 	return fmt.Sprintf("%s/%s", product.Owner, product.Name)
 }
+
+func (product *Product) isValidProvider(provider *Provider) bool {
+	for _, providerName := range product.Providers {
+		if providerName == provider.Name {
+			return true
+		}
+	}
+	return false
+}
+
+func BuyProduct(id string, providerId string, host string) (string, error) {
+	product := GetProduct(id)
+	if product == nil {
+		return "", fmt.Errorf("the product: %s does not exist", id)
+	}
+
+	provider := getProvider(product.Owner, providerId)
+	if provider == nil {
+		return "", fmt.Errorf("the payment provider: %s does not exist", providerId)
+	}
+
+	if !product.isValidProvider(provider) {
+		return "", fmt.Errorf("the payment provider: %s is not valid for the product: %s", providerId, id)
+	}
+
+	cert := getCert(product.Owner, provider.Cert)
+	if cert == nil {
+		return "", fmt.Errorf("the cert: %s does not exist", provider.Cert)
+	}
+
+	pProvider := pp.GetPaymentProvider(provider.Type, provider.ClientId, cert.PublicKey, cert.PrivateKey, cert.AuthorityPublicKey, cert.AuthorityRootPublicKey)
+	if pProvider == nil {
+		return "", fmt.Errorf("the payment provider type: %s is not supported", provider.Type)
+	}
+
+	paymentId := util.GenerateTimeId()
+
+	originFrontend, originBackend := getOriginFromHost(host)
+	returnUrl := fmt.Sprintf("%s/payments/%s", originFrontend, paymentId)
+	notifyUrl := fmt.Sprintf("%s/api/notify-payment", originBackend)
+
+	payUrl, err := pProvider.Pay(product.DisplayName, paymentId, product.Price, returnUrl, notifyUrl)
+	return payUrl, err
+}

object/product_test.go

@@ -0,0 +1,41 @@
+// Copyright 2022 The Casdoor Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package object
+
+import (
+	"testing"
+
+	"github.com/casdoor/casdoor/pp"
+	"github.com/casdoor/casdoor/util"
+)
+
+func TestProvider(t *testing.T) {
+	InitConfig()
+
+	product := GetProduct("admin/product_123")
+	provider := getProvider(product.Owner, "provider_pay_alipay")
+	cert := getCert(product.Owner, "cert-pay-alipay")
+	pProvider := pp.GetPaymentProvider(provider.Type, provider.ClientId, cert.PublicKey, cert.PrivateKey, cert.AuthorityPublicKey, cert.AuthorityRootPublicKey)
+
+	paymentId := util.GenerateTimeId()
+	returnUrl := ""
+	notifyUrl := ""
+	payUrl, err := pProvider.Pay(product.DisplayName, paymentId, product.Price, returnUrl, notifyUrl)
+	if err != nil {
+		panic(err)
+	}
+
+	println(payUrl)
+}

object/provider.go

@@ -35,6 +35,7 @@ type Provider struct {
 	ClientSecret  string `xorm:"varchar(100)" json:"clientSecret"`
 	ClientId2     string `xorm:"varchar(100)" json:"clientId2"`
 	ClientSecret2 string `xorm:"varchar(100)" json:"clientSecret2"`
+	Cert          string `xorm:"varchar(100)" json:"cert"`
 
 	Host    string `xorm:"varchar(100)" json:"host"`
 	Port    int    `json:"port"`