tauri to manage and kill ws-server

src-tauri/src/lib.rs

@@ -1,16 +1,58 @@
+use tauri::Manager;
+
+use std::{process::{Child, Command}, sync::Mutex};
+
+struct State {
+    child: Mutex<Option<Child>>,
+}
+
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
-  tauri::Builder::default()
-    .setup(|app| {
-      if cfg!(debug_assertions) {
-        app.handle().plugin(
-          tauri_plugin_log::Builder::default()
-            .level(log::LevelFilter::Info)
-            .build(),
-        )?;
-      }
-      Ok(())
-    })
-    .run(tauri::generate_context!())
-    .expect("error while running tauri application");
+    tauri::Builder::default()
+        .manage(State {
+            child: Mutex::new(None),
+        })
+        .setup(|app| {
+            if cfg!(debug_assertions) {
+                app.handle().plugin(
+                    tauri_plugin_log::Builder::default()
+                        .level(log::LevelFilter::Info)
+                        .build(),
+                )?;
+            }
+
+            #[cfg(target_os = "windows")]
+            {
+                use std::{env, process::Stdio};
+
+                let cwd = env::current_dir()?;
+                let p = cwd.join("..").join("server.js");
+                println!("{:?}", p);
+
+                let child = Command::new("node")
+                    .arg(p)
+                    .stdout(Stdio::inherit())
+                    .stderr(Stdio::inherit())
+                    .spawn()
+                    .expect("spawn ws-server");
+
+                let state = app.handle().state::<State>();
+                *state.child.lock().unwrap() = Some(child);
+            }
+
+            Ok(())
+        })
+        .build(tauri::generate_context!())
+        .expect("error while running tauri application")
+        .run(|app_handle, event| match event {
+            // On exit handler should be avoided for mobile
+            #[cfg(target_os = "windows")]
+            tauri::RunEvent::ExitRequested { .. } => {
+                if let Some(mut child) = app_handle.state::<State>().child.lock().unwrap().take() {
+                    let _ = child.kill().expect("ws-server not killed");
+                }
+
+            }
+            _ => {}
+        });
 }