Can update client last usage

src/user.rs

@@ -80,6 +80,10 @@ impl APIClient {
     pub fn fmt_used(&self) -> String {
         format_time(self.used).unwrap_or_default()
     }
+
+    pub fn need_update_last_used(&self) -> bool {
+        self.used + 60 * 15 < curr_time().unwrap()
+    }
 }
 
 impl APIClient {
@@ -97,7 +101,7 @@ impl APIClient {
     }
 }
 
-#[derive(serde::Serialize, serde::Deserialize)]
+#[derive(serde::Serialize, serde::Deserialize, Clone)]
 pub struct UserConfig {
     /// Target user ID
     pub user_id: UserID,
@@ -211,4 +215,9 @@ impl UserConfig {
     pub fn find_client_by_id(&self, id: &APIClientID) -> Option<&APIClient> {
         self.clients.iter().find(|c| &c.id == id)
     }
+
+    /// Find a client by its id and get a mutable reference
+    pub fn find_client_by_id_mut(&mut self, id: &APIClientID) -> Option<&mut APIClient> {
+        self.clients.iter_mut().find(|c| &c.id == id)
+    }
 }