fix: lint errors

handler/middleware/authenticate.go

@@ -16,7 +16,6 @@ var UserKey ContextKey = "user"
 func Authenticate(service service.Auth) func(http.Handler) http.Handler {
 	return func(next http.Handler) http.Handler {
 		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-
 			sessionId := getSessionID(r)
 			session, user, _ := service.SignInSession(sessionId)
 
@@ -49,7 +48,12 @@ func GetUser(r *http.Request) *types.User {
 		return nil
 	}
 
-	return obj.(*types.User)
+	user, ok := obj.(*types.User)
+	if !ok {
+		return nil
+	}
+
+	return user
 }
 
 func GetSession(r *http.Request) *types.Session {
@@ -58,7 +62,12 @@ func GetSession(r *http.Request) *types.Session {
 		return nil
 	}
 
-	return obj.(*types.Session)
+	session, ok := obj.(*types.Session)
+	if !ok {
+		return nil
+	}
+
+	return session
 }
 
 func getSessionID(r *http.Request) string {