Store language in session to show the login page translated

http/middleware/context_keys.go

@@ -29,6 +29,9 @@ var (
 	// UserSessionTokenContextKey is the context key used to store the user session ID.
 	UserSessionTokenContextKey = &ContextKey{"UserSessionToken"}
 
+	// UserLanguageContextKey is the context key to store user language.
+	UserLanguageContextKey = &ContextKey{"UserLanguageContextKey"}
+
 	// SessionIDContextKey is the context key used to store the session ID.
 	SessionIDContextKey = &ContextKey{"SessionID"}
 

http/middleware/session.go

@@ -59,6 +59,7 @@ func (s *SessionMiddleware) Handler(next http.Handler) http.Handler {
 		ctx = context.WithValue(ctx, OAuth2StateContextKey, session.Data.OAuth2State)
 		ctx = context.WithValue(ctx, FlashMessageContextKey, session.Data.FlashMessage)
 		ctx = context.WithValue(ctx, FlashErrorMessageContextKey, session.Data.FlashErrorMessage)
+		ctx = context.WithValue(ctx, UserLanguageContextKey, session.Data.Language)
 		next.ServeHTTP(w, r.WithContext(ctx))
 	})
 }

http/middleware/user_session.go

@@ -50,7 +50,15 @@ func (s *UserSessionMiddleware) Handler(next http.Handler) http.Handler {
 func (s *UserSessionMiddleware) isPublicRoute(r *http.Request) bool {
 	route := mux.CurrentRoute(r)
 	switch route.GetName() {
-	case "login", "checkLogin", "stylesheet", "javascript", "oauth2Redirect", "oauth2Callback", "appIcon", "favicon", "webManifest":
+	case "login",
+		"checkLogin",
+		"stylesheet",
+		"javascript",
+		"oauth2Redirect",
+		"oauth2Callback",
+		"appIcon",
+		"favicon",
+		"webManifest":
 		return true
 	default:
 		return false