[Init] Initial commit - NetMesh terminal manager

application/state/sftp/useSftpSessionCleanup.ts

@@ -0,0 +1,27 @@
+import { useEffect, useRef } from "react";
+import type { MutableRefObject } from "react";
+import { netcattyBridge } from "../../../infrastructure/services/netcattyBridge";
+
+export const useSftpSessionCleanup = (
+  sftpSessionsRef: MutableRefObject<Map<string, string>>,
+): MutableRefObject<boolean> => {
+  const disposedRef = useRef(false);
+
+  useEffect(() => {
+    disposedRef.current = false;
+    const sessionsRef = sftpSessionsRef.current;
+
+    return () => {
+      disposedRef.current = true;
+      const sftpIds = [...sessionsRef.values()];
+      sessionsRef.clear();
+      for (const sftpId of sftpIds) {
+        void netcattyBridge.get()?.closeSftp(sftpId).catch(() => {
+          // Ignore errors when closing SFTP sessions during cleanup.
+        });
+      }
+    };
+  }, [sftpSessionsRef]);
+
+  return disposedRef;
+};