more stuff to improve robustness

src-tauri/src/lib.rs

@@ -208,6 +208,17 @@ async fn save_captions(content: String, output_path: String) -> Result<String, S
     .map_err(|e| format!("Task error: {:?}", e))?
 }
 
+/// List downloaded models (Whisper + LLM) with sizes.
+#[tauri::command]
+fn log_error(message: String, stack: String, component_stack: String) {
+    log::error!(
+        "[Frontend Error] {} — Stack: {} — Component: {}",
+        message,
+        stack,
+        component_stack,
+    );
+}
+
 /// List downloaded models (Whisper + LLM) with sizes.
 #[tauri::command]
 fn list_models(app_handle: tauri::AppHandle) -> Result<Vec<models::ModelInfo>, String> {
@@ -310,6 +321,39 @@ async fn remove_background_on_export(input_path: String, output_path: String, re
     .map_err(|e| format!("Task error: {:?}", e))?
 }
 
+/// Write autosave data to the app data directory
+#[tauri::command]
+fn write_autosave(app_handle: tauri::AppHandle, data: String) -> Result<(), String> {
+    let data_dir = app_handle.path().app_data_dir().map_err(|e| format!("No app data directory: {e}"))?;
+    let path = data_dir.join("autosave.json");
+    std::fs::write(&path, data).map_err(|e| format!("Failed to write autosave: {e}"))?;
+    Ok(())
+}
+
+/// Read autosave data if it exists
+#[tauri::command]
+fn read_autosave(app_handle: tauri::AppHandle) -> Result<Option<String>, String> {
+    let data_dir = app_handle.path().app_data_dir().map_err(|e| format!("No app data directory: {e}"))?;
+    let path = data_dir.join("autosave.json");
+    match std::fs::read_to_string(&path) {
+        Ok(data) => Ok(Some(data)),
+        Err(e) if e.kind() == std::io::ErrorKind::NotFound => Ok(None),
+        Err(e) => Err(format!("Failed to read autosave: {e}")),
+    }
+}
+
+/// Delete the autosave file
+#[tauri::command]
+fn delete_autosave(app_handle: tauri::AppHandle) -> Result<(), String> {
+    let data_dir = app_handle.path().app_data_dir().map_err(|e| format!("No app data directory: {e}"))?;
+    let path = data_dir.join("autosave.json");
+    match std::fs::remove_file(&path) {
+        Ok(()) => Ok(()),
+        Err(e) if e.kind() == std::io::ErrorKind::NotFound => Ok(()),
+        Err(e) => Err(format!("Failed to delete autosave: {e}")),
+    }
+}
+
 // --- App entry point ---
 
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
@@ -377,6 +421,10 @@ pub fn run() {
             has_license_feature,
             list_models,
             delete_model,
+            log_error,
+            write_autosave,
+            read_autosave,
+            delete_autosave,
         ])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");