[Init] Initial commit - NetMesh terminal manager

components/sftp/sftpSidePanelConnectionMemory.ts

@@ -0,0 +1,69 @@
+export const MAX_SFTP_SIDE_PANEL_REMEMBERED_PATHS = 32;
+
+export function canApplySftpSidePanelInitialLocation(params: {
+  activeHostId: string;
+  initialLocation: { hostId: string; path: string };
+  expectedConnectionKey: string;
+  actualConnectionKey: string | null;
+  pendingRequiresExactTarget: boolean;
+  pendingTargetConnectionId: string | null;
+  connection: {
+    id: string;
+    hostId: string;
+    isLocal: boolean;
+    status: string;
+  } | null | undefined;
+}): boolean {
+  const { connection } = params;
+  if (!params.initialLocation.path) return false;
+  if (params.initialLocation.hostId !== params.activeHostId) return false;
+  if (!connection || connection.isLocal || connection.status !== "connected") return false;
+  if (connection.hostId !== params.activeHostId) return false;
+  if (params.actualConnectionKey !== params.expectedConnectionKey) return false;
+  if (
+    params.pendingRequiresExactTarget
+    && (
+      !params.pendingTargetConnectionId
+      || connection.id !== params.pendingTargetConnectionId
+    )
+  ) return false;
+  return true;
+}
+
+export function pruneSftpSidePanelState<Value>(
+  valuesById: Map<string, Value>,
+  activeIdsInput: Iterable<string>,
+): void {
+  const activeIds = new Set(activeIdsInput);
+  for (const id of valuesById.keys()) {
+    if (!activeIds.has(id)) {
+      valuesById.delete(id);
+    }
+  }
+}
+
+export function rememberSftpSidePanelPath(
+  paths: Map<string, string>,
+  connectionKey: string,
+  remotePath: string,
+  limit = MAX_SFTP_SIDE_PANEL_REMEMBERED_PATHS,
+): void {
+  paths.delete(connectionKey);
+  paths.set(connectionKey, remotePath);
+  while (paths.size > limit) {
+    const oldestKey = paths.keys().next().value;
+    if (oldestKey === undefined) break;
+    paths.delete(oldestKey);
+  }
+}
+
+export function recallSftpSidePanelPath(
+  paths: Map<string, string>,
+  connectionKey: string,
+): string | undefined {
+  const remotePath = paths.get(connectionKey);
+  if (remotePath === undefined) return undefined;
+  paths.delete(connectionKey);
+  paths.set(connectionKey, remotePath);
+  return remotePath;
+}