[Init] Initial commit - NetMesh terminal manager

application/state/sftp/sftpConnectStartPath.ts

@@ -0,0 +1,44 @@
+import type { SftpFileEntry, SftpFilenameEncoding } from "../../../domain/models";
+
+export interface RemoteSftpStartCache {
+  path: string;
+  homeDir: string;
+  files: SftpFileEntry[];
+  filenameEncoding: SftpFilenameEncoding;
+}
+
+interface ResolveRemoteSftpStartStateParams {
+  filenameEncoding: SftpFilenameEncoding;
+  ignoreSharedCache?: boolean;
+  initialPath?: string;
+  sharedHostCacheCandidate: RemoteSftpStartCache | null;
+}
+
+export function normalizeSftpInitialPath(initialPath?: string): string | undefined {
+  return initialPath === undefined || initialPath.length === 0 ? undefined : initialPath;
+}
+
+export function resolveRemoteSftpStartState({
+  filenameEncoding,
+  ignoreSharedCache,
+  initialPath,
+  sharedHostCacheCandidate,
+}: ResolveRemoteSftpStartStateParams): {
+  initialPath: string | undefined;
+  sharedHostCache: RemoteSftpStartCache | null;
+  cachedStartPath: string;
+} {
+  const requestedInitialPath = normalizeSftpInitialPath(initialPath);
+  const sharedHostCache =
+    !ignoreSharedCache
+      && sharedHostCacheCandidate?.filenameEncoding === filenameEncoding
+      && (!requestedInitialPath || sharedHostCacheCandidate.path === requestedInitialPath)
+      ? sharedHostCacheCandidate
+      : null;
+
+  return {
+    initialPath: requestedInitialPath,
+    sharedHostCache,
+    cachedStartPath: requestedInitialPath ?? sharedHostCache?.path ?? "/",
+  };
+}