recache if unable to serialize existing cache

src-tauri/src/filesystem/cache.rs

@@ -141,8 +141,16 @@ fn save_to_cache(state: &mut MutexGuard<AppState>) {
 }
 
 /// Reads and decodes the cache file and stores it in memory for quick access.
-pub fn load_system_cache(state_mux: &StateSafe) {
+/// Returns false if the cache was unable to deserialize.
+pub fn load_system_cache(state_mux: &StateSafe) -> bool {
     let state = &mut state_mux.lock().unwrap();
     let file_contents = fs::read_to_string(CACHE_FILE_PATH).unwrap();
-    state.system_cache = serde_json::from_str(&file_contents).unwrap();
-}
+
+    let deserialize_result = serde_json::from_str(&file_contents);
+    if let Ok(system_cache) = deserialize_result {
+        state.system_cache = system_cache;
+        return true;
+    }
+
+    false
+}

src-tauri/src/filesystem/volume.rs

@@ -180,9 +180,9 @@ pub fn get_volumes(state_mux: State<StateSafe>) -> Vec<Volume> {
     let mut sys = System::new_all();
     sys.refresh_all();
 
-    let cache_exists = fs::metadata(CACHE_FILE_PATH).is_ok();
+    let mut cache_exists = fs::metadata(CACHE_FILE_PATH).is_ok();
     if cache_exists {
-        load_system_cache(&state_mux);
+        cache_exists = load_system_cache(&state_mux);
     } else {
         File::create(CACHE_FILE_PATH).unwrap();
     }