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server.go
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server.go
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package main
import (
"bytes"
"encoding/json"
"fmt"
"github.com/stripe/stripe-go/v74"
"github.com/stripe/stripe-go/v74/paymentintent"
"io"
"log"
"net/http"
)
func main() {
stripe.Key = "sk_test_51N9TTzAx5un0U0mJJLEhOtcbunBU6h3046q6CiNgVOTq75wW9x3F8qBMy4eEyzp8ipyHCbsUQZD1Xh0D3Oe65ZMu00RsIX78U1"
http.HandleFunc("/create-payment-intent", handleCreatePaymentIntent)
http.HandleFunc("/health", handleHealth)
log.Println("Listening on localhost:4242...")
var err = http.ListenAndServe("localhost:4242", nil)
if err != nil {
log.Fatal(err)
}
}
func handleCreatePaymentIntent(writer http.ResponseWriter, request *http.Request) {
if request.Method != "POST" {
http.Error(writer, http.StatusText(http.StatusMethodNotAllowed), http.StatusMethodNotAllowed)
return
}
var req struct {
ProductId string `json:"product_id"`
FirstName string `json:"first_name"`
LastName string `json:"last_name"`
Address1 string `json:"address_1"`
Address2 string `json:"address_2"`
City string `json:"city"`
State string `json:"state"`
Zip string `json:"zip"`
Country string `json:"country"`
}
err := json.NewDecoder(request.Body).Decode(&req)
if err != nil {
http.Error(writer, err.Error(), http.StatusInternalServerError)
return
}
params := &stripe.PaymentIntentParams{
Amount: stripe.Int64(calculateOrderAmount(req.ProductId)),
Currency: stripe.String(string(stripe.CurrencyUSD)),
AutomaticPaymentMethods: &stripe.PaymentIntentAutomaticPaymentMethodsParams{
Enabled: stripe.Bool(true),
},
}
paymentIntent, err := paymentintent.New(params)
if err != nil {
http.Error(writer, err.Error(), http.StatusInternalServerError)
}
var response struct {
ClientSecret string `json:"clientSecret"`
}
response.ClientSecret = paymentIntent.ClientSecret
var buf bytes.Buffer
err = json.NewEncoder(&buf).Encode(response)
if err != nil {
http.Error(writer, err.Error(), http.StatusInternalServerError)
}
writer.Header().Set("Content-Type", "application/json")
_, err = io.Copy(writer, &buf)
if err != nil {
fmt.Println(err)
}
}
func handleHealth(writer http.ResponseWriter, request *http.Request) {
response := []byte("Server is up and running!")
_, err := writer.Write(response)
if err != nil {
fmt.Println(err)
}
}
func calculateOrderAmount(productId string) int64 {
switch productId {
case "Forever Pants":
return 26000
case "Forever Shirt":
return 15500
case "Forever Shorts":
return 30000
}
return 0
}