Getting the paymentIntent set up route and handler in API

This commit is contained in:
vinchent 2024-08-04 16:26:02 +02:00
parent 79215d5fe1
commit 41cd4cc055
6 changed files with 246 additions and 1 deletions

89
cmd/api/api.go Normal file
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@ -0,0 +1,89 @@
package main
import (
"flag"
"fmt"
"log"
"net/http"
"os"
"time"
)
const (
version = "1.0.0"
)
type config struct {
port int
env string
db struct {
dsn string
}
stripe struct {
secret string
key string
}
}
type application struct {
config config
infolog *log.Logger
errorLog *log.Logger
version string
}
func (app *application) serve() error {
srv := &http.Server{
Addr: fmt.Sprintf(":%d", app.config.port),
Handler: app.routes(),
IdleTimeout: 30 * time.Second,
ReadTimeout: 10 * time.Second,
ReadHeaderTimeout: 5 * time.Second,
WriteTimeout: 5 * time.Second,
}
app.infolog.Printf(
"Starting Backend server in %s mode on port %d",
app.config.env,
app.config.port,
)
return srv.ListenAndServe()
}
func main() {
var cfg config
flag.IntVar(&cfg.port, "port", 4001, "Server port to listen on")
flag.StringVar(
&cfg.env,
"env",
"development",
"Application environment {development|production|maintenance}",
)
flag.StringVar(
&cfg.db.dsn,
"dsn",
"root@tcp(localhost:6379)/widgets?parseTime=true&tls=false",
"Application environment {development|production}",
)
flag.Parse()
cfg.stripe.key = os.Getenv("STRIPE_KEY")
cfg.stripe.secret = os.Getenv("STRIPE_SECRET")
infoLog := log.New(os.Stdout, "INFO\t", log.Ldate|log.Ltime)
errorLog := log.New(os.Stdout, "ERROR\t", log.Ldate|log.Ltime|log.Lshortfile)
app := &application{
version: version,
config: cfg,
infolog: infoLog,
errorLog: errorLog,
}
err := app.serve()
if err != nil {
log.Fatal(err)
}
}

32
cmd/api/handlers-api.go Normal file
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@ -0,0 +1,32 @@
package main
import (
"encoding/json"
"net/http"
)
type stripePayload struct {
Currency string `json:"currency"`
Amount string `json:"amount"`
}
type jsonResponse struct {
OK bool `json:"ok"`
Message string `json:"message"`
Content string `json:"content"`
ID int `json:"id"`
}
func (app *application) GetPaymentIntent(w http.ResponseWriter, r *http.Request) {
j := jsonResponse{
OK: true,
}
out, err := json.MarshalIndent(j, "", " ")
if err != nil {
app.errorLog.Println(err)
}
w.Header().Set("Content-Type", "application/json")
w.Write(out)
}

23
cmd/api/routes-api.go Normal file
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@ -0,0 +1,23 @@
package main
import (
"net/http"
"github.com/go-chi/chi/v5"
"github.com/go-chi/cors"
)
func (app *application) routes() http.Handler {
mux := chi.NewRouter()
mux.Use(cors.Handler(cors.Options{
AllowedOrigins: []string{"https://*", "http://*"},
AllowedMethods: []string{"GET", "POST", "PUT", "DELETE", "OPTIONS"},
AllowedHeaders: []string{"Accept", "Authorization", "Content-Type", "X-CSRF-Token"},
AllowCredentials: false,
MaxAge: 300,
}))
mux.Get("/api/payment-intent", app.GetPaymentIntent)
return mux
}

6
go.mod
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@ -2,4 +2,8 @@ module myapp
go 1.22.5
require github.com/go-chi/chi/v5 v5.1.0
require (
github.com/go-chi/chi/v5 v5.1.0
github.com/go-chi/cors v1.2.1
github.com/stripe/stripe-go/v79 v79.6.0
)

22
go.sum
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@ -1,2 +1,24 @@
github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/go-chi/chi/v5 v5.1.0 h1:acVI1TYaD+hhedDJ3r54HyA6sExp3HfXq7QWEEY/xMw=
github.com/go-chi/chi/v5 v5.1.0/go.mod h1:DslCQbL2OYiznFReuXYUmQ2hGd1aDpCnlMNITLSKoi8=
github.com/go-chi/cors v1.2.1 h1:xEC8UT3Rlp2QuWNEr4Fs/c2EAGVKBwy/1vHx3bppil4=
github.com/go-chi/cors v1.2.1/go.mod h1:sSbTewc+6wYHBBCW7ytsFSn836hqM7JxpglAy2Vzc58=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/stripe/stripe-go/v79 v79.6.0 h1:qSBV2f2rpLEEZTdTlVLzdmQJZNmfoo2E3hUEkFT8GBc=
github.com/stripe/stripe-go/v79 v79.6.0/go.mod h1:cuH6X0zC8peY6f1AubHwgJ/fJSn2dh5pfiCr6CjyKVU=
golang.org/x/net v0.0.0-20210520170846-37e1c6afe023 h1:ADo5wSpq2gqaCGQWzk7S5vd//0iyyLeAratkEoG5dLE=
golang.org/x/net v0.0.0-20210520170846-37e1c6afe023/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
golang.org/x/text v0.3.6 h1:aRYxNxv6iGQlyVaZmk6ZgYEDa+Jg18DxebPSrd6bg1M=
golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

75
internal/card/card.go Normal file
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@ -0,0 +1,75 @@
package card
import (
"github.com/stripe/stripe-go/v79"
"github.com/stripe/stripe-go/v79/paymentintent"
)
type Card struct {
Secret string
Key string
Currency string
}
type Transaction struct {
TransactionStatusID int
Amount int
Currency string
LastFour string
BankReturnCode string
}
func (c *Card) Charge(currency string, amount int) (*stripe.PaymentIntent, string, error) {
return c.CreatePaymentIntent(currency, amount)
}
func (c *Card) CreatePaymentIntent(
currency string,
amount int,
) (*stripe.PaymentIntent, string, error) {
stripe.Key = c.Secret
// create a payment intent
params := &stripe.PaymentIntentParams{
Amount: stripe.Int64(int64(amount)),
Currency: stripe.String(currency),
}
// params.AddMetadata("key", "value")
pi, err := paymentintent.New(params)
if err != nil {
msg := ""
if stripeErr, ok := err.(*stripe.Error); ok {
msg = cardErrorMessage(stripeErr.Code)
}
return nil, msg, err
}
return pi, "", nil
}
func cardErrorMessage(code stripe.ErrorCode) string {
msg := ""
switch code {
case stripe.ErrorCodeCardDeclined:
msg = "Your card was declined"
case stripe.ErrorCodeExpiredCard:
msg = "Your card is expired"
case stripe.ErrorCodeIncorrectCVC:
msg = "Incorrect CVC code"
case stripe.ErrorCodeIncorrectZip:
msg = "Incorrect zip/postal code"
case stripe.ErrorCodeAmountTooLarge:
msg = "The amount is too large to charge to your card"
case stripe.ErrorCodeAmountTooSmall:
msg = "The amount is too small to charge to your card"
case stripe.ErrorCodeBalanceInsufficient:
msg = "Insufficient balance"
case stripe.ErrorCodePostalCodeInvalid:
msg = "Incorrect zip/postal code"
default:
msg = "Your card was declined"
}
return msg
}