got cpu based backend working; trying python/gpu solution bc faster probs

src-tauri/src/lib.rs

@@ -1,5 +1,7 @@
 // --- Commands ---
 
+mod transcription;
+
 /// Returns the backend URL. Stubbed for now; will be replaced once the
 /// Python/Rust backend is fully wired up.
 #[tauri::command]
@@ -34,6 +36,26 @@ fn decrypt_string(encrypted: String) -> Result<String, String> {
         .and_then(|b| String::from_utf8(b).map_err(|e| format!("utf8 error: {e}")))
 }
 
+/// Ensure a Whisper model is downloaded, downloading it if not present.
+#[tauri::command]
+async fn ensure_model(model_name: String) -> Result<String, String> {
+    tauri::async_runtime::spawn_blocking(move || {
+        transcription::ensure_model_downloaded(&model_name)
+    })
+    .await
+    .map_err(|e| format!("Task error: {:?}", e))?
+}
+
+/// Transcribe audio file using Whisper.cpp (runs on a background thread)
+#[tauri::command]
+async fn transcribe_audio(file_path: String, model_name: String, language: Option<String>) -> Result<transcription::TranscriptionResult, String> {
+    tauri::async_runtime::spawn_blocking(move || {
+        transcription::transcribe_audio(&file_path, &model_name, language.as_deref())
+    })
+    .await
+    .map_err(|e| format!("Task error: {:?}", e))?
+}
+
 // --- App entry point ---
 
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
@@ -55,6 +77,8 @@ pub fn run() {
             get_backend_url,
             encrypt_string,
             decrypt_string,
+            ensure_model,
+            transcribe_audio,
         ])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");