FEAT: chuẩn bị thư viện để tạo file exe trên window

src-tauri/src/lib.rs

@@ -0,0 +1,41 @@
+// SonicForge DAW — desktop shell: spawn/terminate daw_engine.exe sidecar.
+use tauri_plugin_shell::process::CommandChild;
+use tauri_plugin_shell::ShellExt;
+use std::sync::Mutex;
+
+struct EngineProcess(Mutex<Option<CommandChild>>);
+
+#[cfg_attr(mobile, tauri::mobile_entry_point)]
+pub fn run() {
+    tauri::Builder::default()
+        .plugin(tauri_plugin_shell::init())
+        .setup(|app| {
+            // 1. Spawn sidecar daw_engine.exe (PyInstaller bundle)
+            let sidecar_command = app
+                .shell()
+                .sidecar("daw_engine")
+                .expect("sidecar daw_engine not found — run build_windows.ps1 first");
+            let (_rx, child) = sidecar_command
+                .env("SF_PARENT_PID", std::process::id().to_string())
+                .spawn()
+                .expect("Failed to spawn daw_engine sidecar");
+
+            app.manage(EngineProcess(Mutex::new(Some(child))));
+            println!("Python Background Engine started (localhost:8000, auto-fallback 8000-8010)");
+            Ok(())
+        })
+        .on_window_event(|window, event| {
+            // 2. Terminate sidecar khi DAW window dong — tranh orphan process
+            if let tauri::WindowEvent::Destroyed = event {
+                let state = window.state::<EngineProcess>();
+                if let Ok(mut lock) = state.0.lock() {
+                    if let Some(child) = lock.take() {
+                        let _ = child.kill();
+                        println!("daw_engine sidecar terminated.");
+                    }
+                }
+            }
+        })
+        .run(tauri::generate_context!())
+        .expect("error while running tauri application");
+}