Follow database structure change

src/data/api_client.rs

@@ -8,11 +8,11 @@ pub struct APIClient {
     pub domain: Option<String>,
     pub comment: Option<String>,
     pub default_expiration_time: u64,
-    pub firebase_token: Option<String>,
+    pub firebase_service_account_file: Option<String>,
 }
 
 impl APIClient {
     pub fn is_firebase_available(&self) -> bool {
-        self.firebase_token.is_some()
+        self.firebase_service_account_file.is_some()
     }
 }