func handleInvoiceStateChange(invoice *stripe.Invoice) error {
cus, err := customer.Get(invoice.Customer.ID, nil)
if err != nil {
return err
}
if err := syncGroupWithCustomerID(invoice.Customer.ID); err != nil {
return err
}
group, err := modelhelper.GetGroup(cus.Meta["groupName"])
// we might get events from other environments where we might not have the
// group in this env.
if err == mgo.ErrNotFound {
return nil
}
if err != nil {
return err
}
status := group.Payment.Subscription.Status
// if sub is in cancelled state within 2 months send an event
if stripe.SubStatus(status) == SubStatusCanceled {
// if group has been created in last 2 months (1 month trial + 1 month free)
totalTrialTime := time.Now().UTC().Add(-time.Hour * 24 * 60)
if group.Id.Time().After(totalTrialTime) {
eventName := "trial ended without payment"
sendEventForCustomer(invoice.Customer.ID, eventName, nil)
}
}
// send instance notification to group
go realtimehelper.NotifyGroup(
group.Slug,
"payment_status_changed",
map[string]string{
"oldStatus": string(group.Payment.Subscription.Status),
"newStatus": string(status),
},
)
eventName := fmt.Sprintf("subscription status %s", status)
return sendEventForCustomer(invoice.Customer.ID, eventName, nil)
}
func syncGroupWithCustomerID(cusID string) error {
cus, err := customer.Get(cusID, nil)
if err != nil {
return err
}
group, err := modelhelper.GetGroup(cus.Meta["groupName"])
if err == mgo.ErrNotFound {
return nil
}
if err != nil {
return err
}
// here sub count might be 0, but should not be gt 1
if cus.Subs.Count > 1 {
return errors.New("customer should only have one subscription")
}
subID := ""
subStatus := SubStatusCanceled
// if we dont have any sub, set it as canceled
if cus.Subs.Count == 1 {
subID = cus.Subs.Values[0].ID
subStatus = cus.Subs.Values[0].Status
}
// if subID and subStatus are same, update not needed
if group.Payment.Subscription.ID == subID &&
stripe.SubStatus(group.Payment.Subscription.Status) == subStatus {
return nil
}
return modelhelper.UpdateGroupPartial(
modelhelper.Selector{"_id": group.Id},
modelhelper.Selector{
"$set": modelhelper.Selector{
"payment.subscription.id": subID,
"payment.subscription.status": string(subStatus),
},
},
)
}