mirror of
https://github.com/binwiederhier/ntfy.git
synced 2024-12-27 04:03:14 +01:00
564 lines
22 KiB
Go
564 lines
22 KiB
Go
package server
|
|
|
|
import (
|
|
"bytes"
|
|
"errors"
|
|
"fmt"
|
|
"github.com/stripe/stripe-go/v74"
|
|
portalsession "github.com/stripe/stripe-go/v74/billingportal/session"
|
|
"github.com/stripe/stripe-go/v74/checkout/session"
|
|
"github.com/stripe/stripe-go/v74/customer"
|
|
"github.com/stripe/stripe-go/v74/price"
|
|
"github.com/stripe/stripe-go/v74/subscription"
|
|
"github.com/stripe/stripe-go/v74/webhook"
|
|
"heckel.io/ntfy/log"
|
|
"heckel.io/ntfy/user"
|
|
"heckel.io/ntfy/util"
|
|
"io"
|
|
"net/http"
|
|
"net/netip"
|
|
"time"
|
|
)
|
|
|
|
// Payments in ntfy are done via Stripe.
|
|
//
|
|
// Pretty much all payments related things are in this file. The following processes
|
|
// handle payments:
|
|
//
|
|
// - Checkout:
|
|
// Creating a Stripe customer and subscription via the Checkout flow. This flow is only used if the
|
|
// ntfy user is not already a Stripe customer. This requires redirecting to the Stripe checkout page.
|
|
// It is implemented in handleAccountBillingSubscriptionCreate and the success callback
|
|
// handleAccountBillingSubscriptionCreateSuccess.
|
|
// - Update subscription:
|
|
// Switching between Stripe subscriptions (upgrade/downgrade) is handled via
|
|
// handleAccountBillingSubscriptionUpdate. This also handles proration.
|
|
// - Cancel subscription (at period end):
|
|
// Users can cancel the Stripe subscription via the web app at the end of the billing period. This
|
|
// simply updates the subscription and Stripe will cancel it. Users cannot immediately cancel the
|
|
// subscription.
|
|
// - Webhooks:
|
|
// Whenever a subscription changes (updated, deleted), Stripe sends us a request via a webhook.
|
|
// This is used to keep the local user database fields up to date. Stripe is the source of truth.
|
|
// What Stripe says is mirrored and not questioned.
|
|
|
|
var (
|
|
errNotAPaidTier = errors.New("tier does not have billing price identifier")
|
|
errMultipleBillingSubscriptions = errors.New("cannot have multiple billing subscriptions")
|
|
errNoBillingSubscription = errors.New("user does not have an active billing subscription")
|
|
)
|
|
|
|
var (
|
|
retryUserDelays = []time.Duration{3 * time.Second, 5 * time.Second, 7 * time.Second}
|
|
)
|
|
|
|
// handleBillingTiersGet returns all available paid tiers, and the free tier. This is to populate the upgrade dialog
|
|
// in the UI. Note that this endpoint does NOT have a user context (no u!).
|
|
func (s *Server) handleBillingTiersGet(w http.ResponseWriter, _ *http.Request, _ *visitor) error {
|
|
tiers, err := s.userManager.Tiers()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
freeTier := configBasedVisitorLimits(s.config)
|
|
response := []*apiAccountBillingTier{
|
|
{
|
|
// This is a bit of a hack: This is the "Free" tier. It has no tier code, name or price.
|
|
Limits: &apiAccountLimits{
|
|
Basis: string(visitorLimitBasisIP),
|
|
Messages: freeTier.MessageLimit,
|
|
MessagesExpiryDuration: int64(freeTier.MessageExpiryDuration.Seconds()),
|
|
Emails: freeTier.EmailLimit,
|
|
Calls: freeTier.CallLimit,
|
|
Reservations: freeTier.ReservationsLimit,
|
|
AttachmentTotalSize: freeTier.AttachmentTotalSizeLimit,
|
|
AttachmentFileSize: freeTier.AttachmentFileSizeLimit,
|
|
AttachmentExpiryDuration: int64(freeTier.AttachmentExpiryDuration.Seconds()),
|
|
},
|
|
},
|
|
}
|
|
prices, err := s.priceCache.Value()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
for _, tier := range tiers {
|
|
priceMonth, priceYear := prices[tier.StripeMonthlyPriceID], prices[tier.StripeYearlyPriceID]
|
|
if priceMonth == 0 || priceYear == 0 { // Only allow tiers that have both prices!
|
|
continue
|
|
}
|
|
response = append(response, &apiAccountBillingTier{
|
|
Code: tier.Code,
|
|
Name: tier.Name,
|
|
Prices: &apiAccountBillingPrices{
|
|
Month: priceMonth,
|
|
Year: priceYear,
|
|
},
|
|
Limits: &apiAccountLimits{
|
|
Basis: string(visitorLimitBasisTier),
|
|
Messages: tier.MessageLimit,
|
|
MessagesExpiryDuration: int64(tier.MessageExpiryDuration.Seconds()),
|
|
Emails: tier.EmailLimit,
|
|
Calls: tier.CallLimit,
|
|
Reservations: tier.ReservationLimit,
|
|
AttachmentTotalSize: tier.AttachmentTotalSizeLimit,
|
|
AttachmentFileSize: tier.AttachmentFileSizeLimit,
|
|
AttachmentExpiryDuration: int64(tier.AttachmentExpiryDuration.Seconds()),
|
|
},
|
|
})
|
|
}
|
|
return s.writeJSON(w, response)
|
|
}
|
|
|
|
// handleAccountBillingSubscriptionCreate creates a Stripe checkout flow to create a user subscription. The tier
|
|
// will be updated by a subsequent webhook from Stripe, once the subscription becomes active.
|
|
func (s *Server) handleAccountBillingSubscriptionCreate(w http.ResponseWriter, r *http.Request, v *visitor) error {
|
|
u := v.User()
|
|
if u.Billing.StripeSubscriptionID != "" {
|
|
return errHTTPBadRequestBillingSubscriptionExists
|
|
}
|
|
req, err := readJSONWithLimit[apiAccountBillingSubscriptionChangeRequest](r.Body, jsonBodyBytesLimit, false)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
tier, err := s.userManager.Tier(req.Tier)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
var priceID string
|
|
if req.Interval == string(stripe.PriceRecurringIntervalMonth) && tier.StripeMonthlyPriceID != "" {
|
|
priceID = tier.StripeMonthlyPriceID
|
|
} else if req.Interval == string(stripe.PriceRecurringIntervalYear) && tier.StripeYearlyPriceID != "" {
|
|
priceID = tier.StripeYearlyPriceID
|
|
} else {
|
|
return errNotAPaidTier
|
|
}
|
|
logvr(v, r).
|
|
With(tier).
|
|
Fields(log.Context{
|
|
"stripe_price_id": priceID,
|
|
"stripe_subscription_interval": req.Interval,
|
|
}).
|
|
Tag(tagStripe).
|
|
Info("Creating Stripe checkout flow")
|
|
var stripeCustomerID *string
|
|
if u.Billing.StripeCustomerID != "" {
|
|
stripeCustomerID = &u.Billing.StripeCustomerID
|
|
stripeCustomer, err := s.stripe.GetCustomer(u.Billing.StripeCustomerID)
|
|
if err != nil {
|
|
return err
|
|
} else if stripeCustomer.Subscriptions != nil && len(stripeCustomer.Subscriptions.Data) > 0 {
|
|
return errMultipleBillingSubscriptions
|
|
}
|
|
}
|
|
successURL := s.config.BaseURL + apiAccountBillingSubscriptionCheckoutSuccessTemplate
|
|
params := &stripe.CheckoutSessionParams{
|
|
Customer: stripeCustomerID, // A user may have previously deleted their subscription
|
|
ClientReferenceID: &u.ID,
|
|
SuccessURL: &successURL,
|
|
Mode: stripe.String(string(stripe.CheckoutSessionModeSubscription)),
|
|
AllowPromotionCodes: stripe.Bool(true),
|
|
LineItems: []*stripe.CheckoutSessionLineItemParams{
|
|
{
|
|
Price: stripe.String(priceID),
|
|
Quantity: stripe.Int64(1),
|
|
},
|
|
},
|
|
AutomaticTax: &stripe.CheckoutSessionAutomaticTaxParams{
|
|
Enabled: stripe.Bool(true),
|
|
},
|
|
}
|
|
sess, err := s.stripe.NewCheckoutSession(params)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
response := &apiAccountBillingSubscriptionCreateResponse{
|
|
RedirectURL: sess.URL,
|
|
}
|
|
return s.writeJSON(w, response)
|
|
}
|
|
|
|
// handleAccountBillingSubscriptionCreateSuccess is called after the Stripe checkout session has succeeded. We use
|
|
// the session ID in the URL to retrieve the Stripe subscription and update the local database. This is the first
|
|
// and only time we can map the local username with the Stripe customer ID.
|
|
func (s *Server) handleAccountBillingSubscriptionCreateSuccess(w http.ResponseWriter, r *http.Request, v *visitor) error {
|
|
// We don't have v.User() in this endpoint, only a userManager!
|
|
matches := apiAccountBillingSubscriptionCheckoutSuccessRegex.FindStringSubmatch(r.URL.Path)
|
|
if len(matches) != 2 {
|
|
return errHTTPInternalErrorInvalidPath
|
|
}
|
|
sessionID := matches[1]
|
|
sess, err := s.stripe.GetSession(sessionID) // FIXME How do we rate limit this?
|
|
if err != nil {
|
|
return err
|
|
} else if sess.Customer == nil || sess.Subscription == nil || sess.ClientReferenceID == "" {
|
|
return errHTTPBadRequestBillingRequestInvalid.Wrap("customer or subscription not found")
|
|
}
|
|
sub, err := s.stripe.GetSubscription(sess.Subscription.ID)
|
|
if err != nil {
|
|
return err
|
|
} else if sub.Items == nil || len(sub.Items.Data) != 1 || sub.Items.Data[0].Price == nil || sub.Items.Data[0].Price.Recurring == nil {
|
|
return errHTTPBadRequestBillingRequestInvalid.Wrap("more than one line item in existing subscription")
|
|
}
|
|
priceID, interval := sub.Items.Data[0].Price.ID, sub.Items.Data[0].Price.Recurring.Interval
|
|
tier, err := s.userManager.TierByStripePrice(priceID)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
u, err := s.userManager.UserByID(sess.ClientReferenceID)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
v.SetUser(u)
|
|
logvr(v, r).
|
|
With(tier).
|
|
Tag(tagStripe).
|
|
Fields(log.Context{
|
|
"stripe_customer_id": sess.Customer.ID,
|
|
"stripe_price_id": priceID,
|
|
"stripe_subscription_id": sub.ID,
|
|
"stripe_subscription_status": string(sub.Status),
|
|
"stripe_subscription_interval": string(interval),
|
|
"stripe_subscription_paid_until": sub.CurrentPeriodEnd,
|
|
}).
|
|
Info("Stripe checkout flow succeeded, updating user tier and subscription")
|
|
customerParams := &stripe.CustomerParams{
|
|
Params: stripe.Params{
|
|
Metadata: map[string]string{
|
|
"user_id": u.ID,
|
|
"user_name": u.Name,
|
|
},
|
|
},
|
|
}
|
|
if _, err := s.stripe.UpdateCustomer(sess.Customer.ID, customerParams); err != nil {
|
|
return err
|
|
}
|
|
if err := s.updateSubscriptionAndTier(r, v, u, tier, sess.Customer.ID, sub.ID, string(sub.Status), string(interval), sub.CurrentPeriodEnd, sub.CancelAt); err != nil {
|
|
return err
|
|
}
|
|
http.Redirect(w, r, s.config.BaseURL+accountPath, http.StatusSeeOther)
|
|
return nil
|
|
}
|
|
|
|
// handleAccountBillingSubscriptionUpdate updates an existing Stripe subscription to a new price, and updates
|
|
// a user's tier accordingly. This endpoint only works if there is an existing subscription.
|
|
func (s *Server) handleAccountBillingSubscriptionUpdate(w http.ResponseWriter, r *http.Request, v *visitor) error {
|
|
u := v.User()
|
|
if u.Billing.StripeSubscriptionID == "" {
|
|
return errNoBillingSubscription
|
|
}
|
|
req, err := readJSONWithLimit[apiAccountBillingSubscriptionChangeRequest](r.Body, jsonBodyBytesLimit, false)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
tier, err := s.userManager.Tier(req.Tier)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
var priceID string
|
|
if req.Interval == string(stripe.PriceRecurringIntervalMonth) && tier.StripeMonthlyPriceID != "" {
|
|
priceID = tier.StripeMonthlyPriceID
|
|
} else if req.Interval == string(stripe.PriceRecurringIntervalYear) && tier.StripeYearlyPriceID != "" {
|
|
priceID = tier.StripeYearlyPriceID
|
|
} else {
|
|
return errNotAPaidTier
|
|
}
|
|
logvr(v, r).
|
|
Tag(tagStripe).
|
|
Fields(log.Context{
|
|
"new_tier_id": tier.ID,
|
|
"new_tier_code": tier.Code,
|
|
"new_tier_stripe_price_id": priceID,
|
|
"new_tier_stripe_subscription_interval": req.Interval,
|
|
// Other stripe_* fields filled by visitor context
|
|
}).
|
|
Info("Changing Stripe subscription and billing tier to %s/%s (price %s, %s)", tier.ID, tier.Name, priceID, req.Interval)
|
|
sub, err := s.stripe.GetSubscription(u.Billing.StripeSubscriptionID)
|
|
if err != nil {
|
|
return err
|
|
} else if sub.Items == nil || len(sub.Items.Data) != 1 {
|
|
return errHTTPBadRequestBillingRequestInvalid.Wrap("no items, or more than one item")
|
|
}
|
|
params := &stripe.SubscriptionParams{
|
|
CancelAtPeriodEnd: stripe.Bool(false),
|
|
ProrationBehavior: stripe.String(string(stripe.SubscriptionSchedulePhaseProrationBehaviorAlwaysInvoice)),
|
|
Items: []*stripe.SubscriptionItemsParams{
|
|
{
|
|
ID: stripe.String(sub.Items.Data[0].ID),
|
|
Price: stripe.String(priceID),
|
|
},
|
|
},
|
|
}
|
|
_, err = s.stripe.UpdateSubscription(sub.ID, params)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return s.writeJSON(w, newSuccessResponse())
|
|
}
|
|
|
|
// handleAccountBillingSubscriptionDelete facilitates downgrading a paid user to a tier-less user,
|
|
// and cancelling the Stripe subscription entirely. Note that this does not actually change the tier.
|
|
// That is done by a webhook at the period end (in X days).
|
|
func (s *Server) handleAccountBillingSubscriptionDelete(w http.ResponseWriter, r *http.Request, v *visitor) error {
|
|
logvr(v, r).Tag(tagStripe).Info("Deleting Stripe subscription")
|
|
u := v.User()
|
|
if u.Billing.StripeSubscriptionID != "" {
|
|
params := &stripe.SubscriptionParams{
|
|
CancelAtPeriodEnd: stripe.Bool(true),
|
|
}
|
|
_, err := s.stripe.UpdateSubscription(u.Billing.StripeSubscriptionID, params)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return s.writeJSON(w, newSuccessResponse())
|
|
}
|
|
|
|
// handleAccountBillingPortalSessionCreate creates a session to the customer billing portal, and returns the
|
|
// redirect URL. The billing portal allows customers to change their payment methods, and cancel the subscription.
|
|
func (s *Server) handleAccountBillingPortalSessionCreate(w http.ResponseWriter, r *http.Request, v *visitor) error {
|
|
logvr(v, r).Tag(tagStripe).Info("Creating Stripe billing portal session")
|
|
u := v.User()
|
|
if u.Billing.StripeCustomerID == "" {
|
|
return errHTTPBadRequestNotAPaidUser
|
|
}
|
|
params := &stripe.BillingPortalSessionParams{
|
|
Customer: stripe.String(u.Billing.StripeCustomerID),
|
|
ReturnURL: stripe.String(s.config.BaseURL),
|
|
}
|
|
ps, err := s.stripe.NewPortalSession(params)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
response := &apiAccountBillingPortalRedirectResponse{
|
|
RedirectURL: ps.URL,
|
|
}
|
|
return s.writeJSON(w, response)
|
|
}
|
|
|
|
// handleAccountBillingWebhook handles incoming Stripe webhooks. It mainly keeps the local user database in sync
|
|
// with the Stripe view of the world. This endpoint is authorized via the Stripe webhook secret. Note that the
|
|
// visitor (v) in this endpoint is the Stripe API, so we don't have u available.
|
|
func (s *Server) handleAccountBillingWebhook(_ http.ResponseWriter, r *http.Request, v *visitor) error {
|
|
stripeSignature := r.Header.Get("Stripe-Signature")
|
|
if stripeSignature == "" {
|
|
return errHTTPBadRequestBillingRequestInvalid
|
|
}
|
|
body, err := util.Peek(r.Body, jsonBodyBytesLimit)
|
|
if err != nil {
|
|
return err
|
|
} else if body.LimitReached {
|
|
return errHTTPEntityTooLargeJSONBody
|
|
}
|
|
event, err := s.stripe.ConstructWebhookEvent(body.PeekedBytes, stripeSignature, s.config.StripeWebhookKey)
|
|
if err != nil {
|
|
return err
|
|
} else if event.Data == nil || event.Data.Raw == nil {
|
|
return errHTTPBadRequestBillingRequestInvalid
|
|
}
|
|
switch event.Type {
|
|
case "customer.subscription.updated":
|
|
return s.handleAccountBillingWebhookSubscriptionUpdated(r, v, event)
|
|
case "customer.subscription.deleted":
|
|
return s.handleAccountBillingWebhookSubscriptionDeleted(r, v, event)
|
|
default:
|
|
logvr(v, r).
|
|
Tag(tagStripe).
|
|
Field("stripe_webhook_type", event.Type).
|
|
Warn("Unhandled Stripe webhook event %s received", event.Type)
|
|
return nil
|
|
}
|
|
}
|
|
|
|
func (s *Server) handleAccountBillingWebhookSubscriptionUpdated(r *http.Request, v *visitor, event stripe.Event) error {
|
|
ev, err := util.UnmarshalJSON[apiStripeSubscriptionUpdatedEvent](io.NopCloser(bytes.NewReader(event.Data.Raw)))
|
|
if err != nil {
|
|
return err
|
|
} else if ev.ID == "" || ev.Customer == "" || ev.Status == "" || ev.CurrentPeriodEnd == 0 || ev.Items == nil || len(ev.Items.Data) != 1 || ev.Items.Data[0].Price == nil || ev.Items.Data[0].Price.ID == "" || ev.Items.Data[0].Price.Recurring == nil {
|
|
logvr(v, r).Tag(tagStripe).Field("stripe_request", fmt.Sprintf("%#v", ev)).Warn("Unexpected request from Stripe")
|
|
return errHTTPBadRequestBillingRequestInvalid
|
|
}
|
|
subscriptionID, priceID, interval := ev.ID, ev.Items.Data[0].Price.ID, ev.Items.Data[0].Price.Recurring.Interval
|
|
logvr(v, r).
|
|
Tag(tagStripe).
|
|
Fields(log.Context{
|
|
"stripe_webhook_type": event.Type,
|
|
"stripe_customer_id": ev.Customer,
|
|
"stripe_price_id": priceID,
|
|
"stripe_subscription_id": ev.ID,
|
|
"stripe_subscription_status": ev.Status,
|
|
"stripe_subscription_interval": interval,
|
|
"stripe_subscription_paid_until": ev.CurrentPeriodEnd,
|
|
"stripe_subscription_cancel_at": ev.CancelAt,
|
|
}).
|
|
Info("Updating subscription to status %s, with price %s", ev.Status, priceID)
|
|
userFn := func() (*user.User, error) {
|
|
return s.userManager.UserByStripeCustomer(ev.Customer)
|
|
}
|
|
// We retry the user retrieval function, because during the Stripe checkout, there a race between the browser
|
|
// checkout success redirect (see handleAccountBillingSubscriptionCreateSuccess), and this webhook. The checkout
|
|
// success call is the one that updates the user with the Stripe customer ID.
|
|
u, err := util.Retry[user.User](userFn, retryUserDelays...)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
v.SetUser(u)
|
|
tier, err := s.userManager.TierByStripePrice(priceID)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if err := s.updateSubscriptionAndTier(r, v, u, tier, ev.Customer, subscriptionID, ev.Status, string(interval), ev.CurrentPeriodEnd, ev.CancelAt); err != nil {
|
|
return err
|
|
}
|
|
s.publishSyncEventAsync(s.visitor(netip.IPv4Unspecified(), u))
|
|
return nil
|
|
}
|
|
|
|
func (s *Server) handleAccountBillingWebhookSubscriptionDeleted(r *http.Request, v *visitor, event stripe.Event) error {
|
|
ev, err := util.UnmarshalJSON[apiStripeSubscriptionDeletedEvent](io.NopCloser(bytes.NewReader(event.Data.Raw)))
|
|
if err != nil {
|
|
return err
|
|
} else if ev.Customer == "" {
|
|
return errHTTPBadRequestBillingRequestInvalid
|
|
}
|
|
u, err := s.userManager.UserByStripeCustomer(ev.Customer)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
v.SetUser(u)
|
|
logvr(v, r).
|
|
Tag(tagStripe).
|
|
Field("stripe_webhook_type", event.Type).
|
|
Info("Subscription deleted, downgrading to unpaid tier")
|
|
if err := s.updateSubscriptionAndTier(r, v, u, nil, ev.Customer, "", "", "", 0, 0); err != nil {
|
|
return err
|
|
}
|
|
s.publishSyncEventAsync(s.visitor(netip.IPv4Unspecified(), u))
|
|
return nil
|
|
}
|
|
|
|
func (s *Server) updateSubscriptionAndTier(r *http.Request, v *visitor, u *user.User, tier *user.Tier, customerID, subscriptionID, status, interval string, paidUntil, cancelAt int64) error {
|
|
reservationsLimit := visitorDefaultReservationsLimit
|
|
if tier != nil {
|
|
reservationsLimit = tier.ReservationLimit
|
|
}
|
|
if err := s.maybeRemoveMessagesAndExcessReservations(r, v, u, reservationsLimit); err != nil {
|
|
return err
|
|
}
|
|
if tier == nil && u.Tier != nil {
|
|
logvr(v, r).Tag(tagStripe).Info("Resetting tier for user %s", u.Name)
|
|
if err := s.userManager.ResetTier(u.Name); err != nil {
|
|
return err
|
|
}
|
|
} else if tier != nil && u.TierID() != tier.ID {
|
|
logvr(v, r).
|
|
Tag(tagStripe).
|
|
Fields(log.Context{
|
|
"new_tier_id": tier.ID,
|
|
"new_tier_code": tier.Code,
|
|
}).
|
|
Info("Changing tier to tier %s (%s) for user %s", tier.ID, tier.Name, u.Name)
|
|
if err := s.userManager.ChangeTier(u.Name, tier.Code); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
// Update billing fields
|
|
billing := &user.Billing{
|
|
StripeCustomerID: customerID,
|
|
StripeSubscriptionID: subscriptionID,
|
|
StripeSubscriptionStatus: stripe.SubscriptionStatus(status),
|
|
StripeSubscriptionInterval: stripe.PriceRecurringInterval(interval),
|
|
StripeSubscriptionPaidUntil: time.Unix(paidUntil, 0),
|
|
StripeSubscriptionCancelAt: time.Unix(cancelAt, 0),
|
|
}
|
|
if err := s.userManager.ChangeBilling(u.Name, billing); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// fetchStripePrices contacts the Stripe API to retrieve all prices. This is used by the server to cache the prices
|
|
// in memory, and ultimately for the web app to display the price table.
|
|
func (s *Server) fetchStripePrices() (map[string]int64, error) {
|
|
log.Debug("Caching prices from Stripe API")
|
|
priceMap := make(map[string]int64)
|
|
prices, err := s.stripe.ListPrices(&stripe.PriceListParams{Active: stripe.Bool(true)})
|
|
if err != nil {
|
|
log.Warn("Fetching Stripe prices failed: %s", err.Error())
|
|
return nil, err
|
|
}
|
|
for _, p := range prices {
|
|
priceMap[p.ID] = p.UnitAmount
|
|
log.Trace("- Caching price %s = %v", p.ID, priceMap[p.ID])
|
|
}
|
|
return priceMap, nil
|
|
}
|
|
|
|
// stripeAPI is a small interface to facilitate mocking of the Stripe API
|
|
type stripeAPI interface {
|
|
NewCheckoutSession(params *stripe.CheckoutSessionParams) (*stripe.CheckoutSession, error)
|
|
NewPortalSession(params *stripe.BillingPortalSessionParams) (*stripe.BillingPortalSession, error)
|
|
ListPrices(params *stripe.PriceListParams) ([]*stripe.Price, error)
|
|
GetCustomer(id string) (*stripe.Customer, error)
|
|
GetSession(id string) (*stripe.CheckoutSession, error)
|
|
GetSubscription(id string) (*stripe.Subscription, error)
|
|
UpdateCustomer(id string, params *stripe.CustomerParams) (*stripe.Customer, error)
|
|
UpdateSubscription(id string, params *stripe.SubscriptionParams) (*stripe.Subscription, error)
|
|
CancelSubscription(id string) (*stripe.Subscription, error)
|
|
ConstructWebhookEvent(payload []byte, header string, secret string) (stripe.Event, error)
|
|
}
|
|
|
|
// realStripeAPI is a thin shim around the Stripe functions to facilitate mocking
|
|
type realStripeAPI struct{}
|
|
|
|
var _ stripeAPI = (*realStripeAPI)(nil)
|
|
|
|
func newStripeAPI() stripeAPI {
|
|
return &realStripeAPI{}
|
|
}
|
|
|
|
func (s *realStripeAPI) NewCheckoutSession(params *stripe.CheckoutSessionParams) (*stripe.CheckoutSession, error) {
|
|
return session.New(params)
|
|
}
|
|
|
|
func (s *realStripeAPI) NewPortalSession(params *stripe.BillingPortalSessionParams) (*stripe.BillingPortalSession, error) {
|
|
return portalsession.New(params)
|
|
}
|
|
|
|
func (s *realStripeAPI) ListPrices(params *stripe.PriceListParams) ([]*stripe.Price, error) {
|
|
prices := make([]*stripe.Price, 0)
|
|
iter := price.List(params)
|
|
for iter.Next() {
|
|
prices = append(prices, iter.Price())
|
|
}
|
|
if iter.Err() != nil {
|
|
return nil, iter.Err()
|
|
}
|
|
return prices, nil
|
|
}
|
|
|
|
func (s *realStripeAPI) GetCustomer(id string) (*stripe.Customer, error) {
|
|
return customer.Get(id, nil)
|
|
}
|
|
|
|
func (s *realStripeAPI) GetSession(id string) (*stripe.CheckoutSession, error) {
|
|
return session.Get(id, nil)
|
|
}
|
|
|
|
func (s *realStripeAPI) GetSubscription(id string) (*stripe.Subscription, error) {
|
|
return subscription.Get(id, nil)
|
|
}
|
|
|
|
func (s *realStripeAPI) UpdateCustomer(id string, params *stripe.CustomerParams) (*stripe.Customer, error) {
|
|
return customer.Update(id, params)
|
|
}
|
|
|
|
func (s *realStripeAPI) UpdateSubscription(id string, params *stripe.SubscriptionParams) (*stripe.Subscription, error) {
|
|
return subscription.Update(id, params)
|
|
}
|
|
|
|
func (s *realStripeAPI) CancelSubscription(id string) (*stripe.Subscription, error) {
|
|
return subscription.Cancel(id, nil)
|
|
}
|
|
|
|
func (s *realStripeAPI) ConstructWebhookEvent(payload []byte, header string, secret string) (stripe.Event, error) {
|
|
return webhook.ConstructEvent(payload, header, secret)
|
|
}
|