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feat(payments): direct-rail order + intake handlers, config and reaper

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Wire the Robokassa direct rail into the backend transport. POST
/api/v1/user/wallet/order (walletGate + a D36 confirmed-email gate for the
direct rail) opens a pending order and returns the signed Robokassa payment
URL. The internal, gateway-only /payments/robokassa/result endpoint verifies
the Result signature, credits the matched order exactly once via Fund (honoured
even if expired), records a succeeded payment event, and answers Robokassa's
"OK<InvId>". Add the Robokassa env config, an account HasConfirmedEmail check
(D36), the payment_events writer, and a periodic pending-order reaper. The
routes register only when a Robokassa merchant login is configured.
This commit is contained in:
Ilia Denisov
2026-07-09 16:59:34 +02:00
parent 7860efce48
commit 36a5730e52
8 changed files with 221 additions and 0 deletions
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backend/internal/config/config.go
+15
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@@ -14,6 +14,7 @@ import (
"scrabble/backend/internal/lobby"
"scrabble/backend/internal/postgres"
"scrabble/backend/internal/ratewatch"
"scrabble/backend/internal/robokassa"
"scrabble/backend/internal/robot"
"scrabble/backend/internal/telemetry"
)
@@ -64,6 +65,9 @@ type Config struct {
// RendererURL is the base URL of the internal image-render sidecar (e.g.
// http://renderer:8090). Empty disables the PNG export artifact.
RendererURL string
// Robokassa configures the direct-rail (RUB) payment provider. An empty MerchantLogin
// leaves the direct order and Result-callback endpoints unregistered.
Robokassa robokassa.Config
}
// Defaults applied when the corresponding environment variable is unset.
@@ -153,6 +157,13 @@ func Load() (Config, error) {
AdminTo: os.Getenv("BACKEND_ADMIN_EMAIL"),
}
robo := robokassa.Config{
MerchantLogin: os.Getenv("BACKEND_ROBOKASSA_MERCHANT_LOGIN"),
Password1: os.Getenv("BACKEND_ROBOKASSA_PASSWORD1"),
Password2: os.Getenv("BACKEND_ROBOKASSA_PASSWORD2"),
IsTest: os.Getenv("BACKEND_ROBOKASSA_TEST") == "1",
}
c := Config{
HTTPAddr: envOr("BACKEND_HTTP_ADDR", defaultHTTPAddr),
GRPCAddr: envOr("BACKEND_GRPC_ADDR", defaultGRPCAddr),
@@ -170,6 +181,7 @@ func Load() (Config, error) {
GuestRetention: guestRetention,
ExportSignKey: os.Getenv("BACKEND_EXPORT_SIGN_KEY"),
RendererURL: os.Getenv("BACKEND_RENDERER_URL"),
Robokassa: robo,
}
if err := c.validate(); err != nil {
return Config{}, err
@@ -222,6 +234,9 @@ func (c Config) validate() error {
return fmt.Errorf("config: BACKEND_PUBLIC_BASE_URL %q must be an absolute URL (scheme://host)", c.PublicBaseURL)
}
}
if c.Robokassa.MerchantLogin != "" && (c.Robokassa.Password1 == "" || c.Robokassa.Password2 == "") {
return fmt.Errorf("config: BACKEND_ROBOKASSA_PASSWORD1 and BACKEND_ROBOKASSA_PASSWORD2 must be set when BACKEND_ROBOKASSA_MERCHANT_LOGIN is")
}
return nil
}