tsk-71: Added expiration check in LoginResult

src/login_result.rs

@@ -28,4 +28,10 @@ impl LoginResult {
     pub fn _to_json(&self) -> Result<String, serde_json::Error> {
         serde_json::to_string_pretty(&self)
     }
+
+    pub fn token_expired(&self) -> bool {
+        let current_time = time::OffsetDateTime::now_utc();
+        let expired = time::OffsetDateTime::from_unix_timestamp(self.expiration).unwrap();
+        current_time > expired
+    }
 }