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fix(account): seed a fresh guest's interface language from the client locale

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A guest was provisioned with only its detected time zone; its PreferredLanguage
fell to the 'en' column default. The client already sends its locale in the guest
login (GuestLoginRequest.locale), but the gateway dropped it and ProvisionGuest
took no language — so a Russian user's brand-new native guest got English
language-dependent server content (the ad banner, bot messages) until the client's
later language reconcile. Read the locale in the gateway guest handler, thread it
through GuestAuth -> ProvisionGuest, and seed PreferredLanguage from it (validated;
an unsupported/absent value keeps the 'en' default). Wire field already present —
no schema change.
This commit is contained in:
Ilia Denisov
2026-07-15 00:06:23 +02:00
parent b5fe61279b
commit f8aeec8008
9 changed files with 48 additions and 19 deletions
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backend/internal/account/account.go
+11 -3
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@@ -534,7 +534,7 @@ const guestDisplayName = "Guest"
// and history. Guests are not reused — each bootstrap mints a new account. browserTZ
// (the client's detected "±HH:MM" UTC offset) seeds the guest's time zone, falling
// back to the 'UTC' default when empty or malformed.
func (s *Store) ProvisionGuest(ctx context.Context, browserTZ string) (Account, error) {
func (s *Store) ProvisionGuest(ctx context.Context, browserTZ, language string) (Account, error) {
accountID, err := uuid.NewV7()
if err != nil {
return Account{}, fmt.Errorf("account: new guest id: %w", err)
@@ -543,9 +543,17 @@ func (s *Store) ProvisionGuest(ctx context.Context, browserTZ string) (Account,
if tz == "" {
tz = "UTC"
}
// Seed the interface language from the client's detected locale (validated to a supported
// one), so a fresh guest's language-dependent server content — the ad banner, bot messages —
// is right from first contact rather than the 'en' column default until the client's later
// language reconcile catches up. An unsupported or absent code keeps the 'en' default.
lang := supportedLanguage(language)
if lang == "" {
lang = "en"
}
stmt := table.Accounts.
INSERT(table.Accounts.AccountID, table.Accounts.DisplayName, table.Accounts.IsGuest, table.Accounts.TimeZone).
VALUES(accountID, guestDisplayName, true, tz).
INSERT(table.Accounts.AccountID, table.Accounts.DisplayName, table.Accounts.IsGuest, table.Accounts.TimeZone, table.Accounts.PreferredLanguage).
VALUES(accountID, guestDisplayName, true, tz, lang).
RETURNING(table.Accounts.AllColumns)
var row model.Accounts