casdoor/pp/airwallex.go

295 lines
9.1 KiB
Go

package pp
import (
"bytes"
"encoding/json"
"fmt"
"io"
"net/http"
"net/url"
"strings"
"sync"
"time"
"github.com/casdoor/casdoor/conf"
)
type AirwallexPaymentProvider struct {
Client *AirwallexClient
}
func NewAirwallexPaymentProvider(clientId string, apiKey string) (*AirwallexPaymentProvider, error) {
isProd := conf.GetConfigString("runmode") == "prod"
apiEndpoint := "https://api-demo.airwallex.com/api/v1"
apiCheckout := "https://checkout-demo.airwallex.com/#/standalone/checkout?"
if isProd {
apiEndpoint = "https://api.airwallex.com/api/v1"
apiCheckout = "https://checkout.airwallex.com/#/standalone/checkout?"
}
client := &AirwallexClient{
ClientId: clientId,
APIKey: apiKey,
APIEndpoint: apiEndpoint,
APICheckout: apiCheckout,
client: &http.Client{Timeout: 15 * time.Second},
}
pp := &AirwallexPaymentProvider{
Client: client,
}
return pp, nil
}
func (pp *AirwallexPaymentProvider) Pay(r *PayReq) (*PayResp, error) {
// Create a payment intent
intent, err := pp.Client.CreateIntent(r)
if err != nil {
return nil, err
}
payUrl, err := pp.Client.GetCheckoutUrl(intent, r)
if err != nil {
return nil, err
}
return &PayResp{
PayUrl: payUrl,
OrderId: intent.MerchantOrderId,
}, nil
}
func (pp *AirwallexPaymentProvider) Notify(body []byte, orderId string) (*NotifyResult, error) {
notifyResult := &NotifyResult{}
intent, err := pp.Client.GetIntentByOrderId(orderId)
if err != nil {
return nil, err
}
// Check intent status
switch intent.Status {
case "PENDING", "REQUIRES_PAYMENT_METHOD", "REQUIRES_CUSTOMER_ACTION", "REQUIRES_CAPTURE":
notifyResult.PaymentStatus = PaymentStateCreated
return notifyResult, nil
case "CANCELLED":
notifyResult.PaymentStatus = PaymentStateCanceled
return notifyResult, nil
case "EXPIRED":
notifyResult.PaymentStatus = PaymentStateTimeout
return notifyResult, nil
case "SUCCEEDED":
// Skip
default:
notifyResult.PaymentStatus = PaymentStateError
notifyResult.NotifyMessage = fmt.Sprintf("unexpected airwallex checkout status: %v", intent.Status)
return notifyResult, nil
}
// Check attempt status
if intent.PaymentStatus != "" {
switch intent.PaymentStatus {
case "CANCELLED", "EXPIRED", "RECEIVED", "AUTHENTICATION_REDIRECTED", "AUTHORIZED", "CAPTURE_REQUESTED":
notifyResult.PaymentStatus = PaymentStateCreated
return notifyResult, nil
case "PAID", "SETTLED":
// Skip
default:
notifyResult.PaymentStatus = PaymentStateError
notifyResult.NotifyMessage = fmt.Sprintf("unexpected airwallex checkout payment status: %v", intent.PaymentStatus)
return notifyResult, nil
}
}
// The Payment has succeeded.
var productDisplayName, productName, providerName string
if description, ok := intent.Metadata["description"]; ok {
productName, productDisplayName, providerName, _ = parseAttachString(description.(string))
}
orderId = intent.MerchantOrderId
return &NotifyResult{
PaymentName: orderId,
PaymentStatus: PaymentStatePaid,
ProductName: productName,
ProductDisplayName: productDisplayName,
ProviderName: providerName,
Price: priceStringToFloat64(intent.Amount.String()),
Currency: intent.Currency,
OrderId: orderId,
}, nil
}
func (pp *AirwallexPaymentProvider) GetInvoice(paymentName, personName, personIdCard, personEmail, personPhone, invoiceType, invoiceTitle, invoiceTaxId string) (string, error) {
return "", nil
}
func (pp *AirwallexPaymentProvider) GetResponseError(err error) string {
if err == nil {
return "success"
}
return "fail"
}
/*
* Airwallex Client implementation (to be removed upon official SDK release)
*/
type AirwallexClient struct {
ClientId string
APIKey string
APIEndpoint string
APICheckout string
client *http.Client
tokenCache *AirWallexTokenInfo
tokenMutex sync.RWMutex
}
type AirWallexTokenInfo struct {
Token string `json:"token"`
ExpiresAt string `json:"expires_at"`
parsedExpiresAt time.Time
}
type AirWallexIntentResp struct {
Id string `json:"id"`
ClientSecret string `json:"client_secret"`
MerchantOrderId string `json:"merchant_order_id"`
}
func (c *AirwallexClient) GetToken() (string, error) {
c.tokenMutex.Lock()
defer c.tokenMutex.Unlock()
if c.tokenCache != nil && time.Now().Before(c.tokenCache.parsedExpiresAt) {
return c.tokenCache.Token, nil
}
req, _ := http.NewRequest("POST", c.APIEndpoint+"/authentication/login", bytes.NewBuffer([]byte("{}")))
req.Header.Set("x-client-id", c.ClientId)
req.Header.Set("x-api-key", c.APIKey)
resp, err := c.client.Do(req)
if err != nil {
return "", err
}
defer resp.Body.Close()
var result AirWallexTokenInfo
if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
return "", err
}
if result.Token == "" {
return "", fmt.Errorf("invalid token response")
}
expiresAt := strings.Replace(result.ExpiresAt, "+0000", "+00:00", 1)
result.parsedExpiresAt, _ = time.Parse(time.RFC3339, expiresAt)
c.tokenCache = &result
return result.Token, nil
}
func (c *AirwallexClient) authRequest(method, url string, body interface{}) (map[string]interface{}, error) {
token, err := c.GetToken()
if err != nil {
return nil, err
}
b, _ := json.Marshal(body)
var reqBody io.Reader
if method != "GET" {
reqBody = bytes.NewBuffer(b)
}
req, _ := http.NewRequest(method, url, reqBody)
req.Header.Set("Authorization", "Bearer "+token)
req.Header.Set("Content-Type", "application/json")
resp, err := c.client.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
var result map[string]interface{}
if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
return nil, err
}
return result, nil
}
func (c *AirwallexClient) CreateIntent(r *PayReq) (*AirWallexIntentResp, error) {
description := joinAttachString([]string{r.ProductName, r.ProductDisplayName, r.ProviderName})
orderId := r.PaymentName
intentReq := map[string]interface{}{
"currency": r.Currency,
"amount": r.Price,
"merchant_order_id": orderId,
"request_id": orderId,
"descriptor": strings.ReplaceAll(string([]rune(description)[:32]), "\x00", ""),
"metadata": map[string]interface{}{"description": description},
"order": map[string]interface{}{"products": []map[string]interface{}{{"name": r.ProductDisplayName, "quantity": 1, "desc": r.ProductDescription, "image_url": r.ProductImage}}},
"customer": map[string]interface{}{"merchant_customer_id": r.PayerId, "email": r.PayerEmail, "first_name": r.PayerName, "last_name": r.PayerName},
}
intentUrl := fmt.Sprintf("%s/pa/payment_intents/create", c.APIEndpoint)
intentRes, err := c.authRequest("POST", intentUrl, intentReq)
if err != nil {
return nil, fmt.Errorf("failed to create payment intent: %v", err)
}
return &AirWallexIntentResp{
Id: intentRes["id"].(string),
ClientSecret: intentRes["client_secret"].(string),
MerchantOrderId: intentRes["merchant_order_id"].(string),
}, nil
}
type AirwallexIntent struct {
Amount json.Number `json:"amount"`
Currency string `json:"currency"`
Id string `json:"id"`
Status string `json:"status"`
Descriptor string `json:"descriptor"`
MerchantOrderId string `json:"merchant_order_id"`
LatestPaymentAttempt struct {
Status string `json:"status"`
} `json:"latest_payment_attempt"`
Metadata map[string]interface{} `json:"metadata"`
}
type AirwallexIntents struct {
Items []AirwallexIntent `json:"items"`
}
type AirWallexIntentInfo struct {
Amount json.Number
Currency string
Id string
Status string
Descriptor string
MerchantOrderId string
PaymentStatus string
Metadata map[string]interface{}
}
func (c *AirwallexClient) GetIntentByOrderId(orderId string) (*AirWallexIntentInfo, error) {
intentUrl := fmt.Sprintf("%s/pa/payment_intents/?merchant_order_id=%s", c.APIEndpoint, orderId)
intentRes, err := c.authRequest("GET", intentUrl, nil)
if err != nil {
return nil, fmt.Errorf("failed to get payment intent: %v", err)
}
items := intentRes["items"].([]interface{})
if len(items) == 0 {
return nil, fmt.Errorf("no payment intent found for order id: %s", orderId)
}
var intent AirwallexIntent
if b, err := json.Marshal(items[0]); err == nil {
json.Unmarshal(b, &intent)
}
return &AirWallexIntentInfo{
Id: intent.Id,
Amount: intent.Amount,
Currency: intent.Currency,
Status: intent.Status,
Descriptor: intent.Descriptor,
MerchantOrderId: intent.MerchantOrderId,
PaymentStatus: intent.LatestPaymentAttempt.Status,
Metadata: intent.Metadata,
}, nil
}
func (c *AirwallexClient) GetCheckoutUrl(intent *AirWallexIntentResp, r *PayReq) (string, error) {
return fmt.Sprintf("%sintent_id=%s&client_secret=%s&mode=payment&currency=%s&amount=%v&requiredBillingContactFields=%s&successUrl=%s&failUrl=%s&logoUrl=%s",
c.APICheckout,
intent.Id,
intent.ClientSecret,
r.Currency,
r.Price,
url.QueryEscape(`["address"]`),
r.ReturnUrl,
r.ReturnUrl,
"data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=", // replace default logo
), nil
}