func getSoldCounter(c context.Context) int {
var cachedCounter int
_, err := memcache.JSON.Get(c, "sold", &cachedCounter)
if err == nil {
log.Infof(c, "[counter] Cache hit")
return cachedCounter
}
if err != memcache.ErrCacheMiss {
log.Infof(c, "[counter] Unexpected error")
web.LogError(c, err, "Error accessing counter in memcache")
} else {
log.Infof(c, "[counter] Cache miss")
}
sold := new(Counter)
key := datastore.NewKey(c, "Counter", "sold", 0, nil)
err = datastore.Get(c, key, sold)
if err != nil && err != datastore.ErrNoSuchEntity {
web.LogError(c, err, "Error reading counter from datastore")
return 0
}
err = memcache.JSON.Set(c, &memcache.Item{
Key: "sold",
Object: &sold.Value,
})
if err != nil {
web.LogError(c, err, "Error storing counter in memcache")
}
return sold.Value
}
func ShipHandler(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
sc := client.New(config.Get(c, "STRIPE_KEY"), stripe.NewBackends(urlfetch.Client(c)))
r.ParseForm()
orderID := r.Form.Get("orderID")
trackingNumber := r.Form.Get("trackingNumber")
order, err := sc.Orders.Update(orderID, &stripe.OrderUpdateParams{
Status: stripe.StatusFulfilled,
Params: stripe.Params{
Meta: map[string]string{"tracking_number": trackingNumber},
},
})
if err != nil {
web.SendError(c, w, err, 500, "Error marking order as fulfilled")
return
}
customer, err := sc.Customers.Get(order.Customer.ID, nil)
if err != nil {
web.LogError(c, err, "Error fetching customer info for email")
} else {
err = email.SendShippingNotification(c, customer.Desc, customer.Email, order.Shipping, trackingNumber)
if err != nil {
web.LogError(c, err, "Error sending shipping notification")
}
}
web.SendJSON(c, w, ChargeResponse{Success: true})
}
func PaymentHandler(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
decoder := json.NewDecoder(r.Body)
body := new(PaymentRequestBody)
err := decoder.Decode(&body)
if err != nil {
web.SendError(c, w, err, 400, "Could not parse payment information")
return
}
token := body.Token
args := body.Args
sc := client.New(config.Get(c, "STRIPE_KEY"), stripe.NewBackends(urlfetch.Client(c)))
shipping := &stripe.ShippingParams{
Name: args.ShippingName,
Address: &stripe.AddressParams{
Line1: args.ShippingAddressLine1,
Line2: args.ShippingAddressLine2,
City: args.ShippingAddressCity,
State: args.ShippingAddressState,
PostalCode: args.ShippingAddressZIP,
Country: args.ShippingAddressCountry,
},
}
customer, err := sc.Customers.New(&stripe.CustomerParams{
Email: token.Email,
Desc: args.BillingName,
Source: &stripe.SourceParams{Token: token.ID},
})
if err != nil {
web.SendError(c, w, err, 500, "Error saving customer to Stripe")
return
}
order, err := sc.Orders.New(&stripe.OrderParams{
Currency: "usd",
Customer: customer.ID,
Shipping: shipping,
Items: []*stripe.OrderItemParams{
&stripe.OrderItemParams{
Type: "sku",
Parent: "book",
},
},
})
if err != nil {
web.SendError(c, w, err, 500, "Error saving order to Stripe")
return
}
err = incrementSoldCounter(c)
if err != nil {
web.LogError(c, err, "Error incrementing sold counter")
}
err = email.SendReceipt(c, args.BillingName, token.Email, order.Shipping)
if err != nil {
web.LogError(c, err, "Error sending receipt")
}
web.SendJSON(c, w, PaymentResponse{Ok: true})
}
func ChargeHandler(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
sc := client.New(config.Get(c, "STRIPE_KEY"), stripe.NewBackends(urlfetch.Client(c)))
r.ParseForm()
orderID := r.Form.Get("orderID")
customerID := r.Form.Get("customerID")
_, err := sc.Orders.Pay(orderID, &stripe.OrderPayParams{
Customer: customerID,
})
if err != nil {
stripeErr := err.(*stripe.Error)
web.LogError(c, err, "Error from Stripe")
switch stripeErr.Code {
case stripe.IncorrectNum:
fallthrough
case stripe.InvalidNum:
fallthrough
case stripe.InvalidExpM:
fallthrough
case stripe.InvalidExpY:
fallthrough
case stripe.InvalidCvc:
fallthrough
case stripe.ExpiredCard:
fallthrough
case stripe.IncorrectCvc:
fallthrough
case stripe.IncorrectZip:
fallthrough
case stripe.CardDeclined:
customer, err := sc.Customers.Get(customerID, nil)
if err != nil {
web.SendError(c, w, err, 500, "Error getting customer")
return
}
_, err = sc.Orders.Update(orderID, &stripe.OrderUpdateParams{
Status: stripe.StatusCanceled,
})
if err != nil {
web.SendError(c, w, err, 500, "Error marking order as cancelled")
return
}
err = email.SendPaymentDeclinedNotification(c, customer.Desc, customer.Email)
if err != nil {
web.SendError(c, w, err, 500, "Error sending payment declined email")
}
web.SendJSON(c, w, ChargeResponse{Success: false})
return
default:
web.SendError(c, w, err, 500, "Error charging card")
return
}
}
web.SendJSON(c, w, ChargeResponse{Success: true})
}