refactor(desktop): harden workspace shell foundation

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/desktop/src/lib/key-workspace-state.ts

@@ -0,0 +1,76 @@
+export type WorkspaceKeyIdentity = {
+  id: string;
+};
+
+export type WorkspaceSearchableKey = WorkspaceKeyIdentity & {
+  name: string;
+};
+
+export function filterWorkspaceKeys<T extends WorkspaceSearchableKey>(
+  keys: T[],
+  search: string,
+) {
+  const query = search.trim().toLowerCase();
+  if (!query) {
+    return keys;
+  }
+
+  return keys.filter((item) => item.name.toLowerCase().includes(query));
+}
+
+export function resolveSelectedWorkspaceKey<T extends WorkspaceKeyIdentity>(
+  keys: T[],
+  selectedKeyId: string | null,
+) {
+  if (keys.length === 0) {
+    return null;
+  }
+
+  return keys.find((item) => item.id === selectedKeyId) ?? keys[0];
+}
+
+export function resolveSelectedWorkspaceKeyId<T extends WorkspaceKeyIdentity>(
+  keys: T[],
+  selectedKeyId: string | null,
+) {
+  return resolveSelectedWorkspaceKey(keys, selectedKeyId)?.id ?? null;
+}
+
+export function replaceWorkspaceKeyRecord<T extends WorkspaceKeyIdentity>(
+  current: T[],
+  next: T,
+) {
+  let replaced = false;
+  const updated = current.map((item) => {
+    if (item.id !== next.id) {
+      return item;
+    }
+
+    replaced = true;
+    return {
+      ...item,
+      ...next,
+    };
+  });
+
+  return replaced ? updated : [next, ...current];
+}
+
+export function appendWorkspaceKeyRecords<T extends WorkspaceKeyIdentity>(
+  current: T[],
+  next: T[],
+) {
+  const seen = new Set(current.map((item) => item.id));
+  const appended = [...current];
+
+  for (const item of next) {
+    if (seen.has(item.id)) {
+      continue;
+    }
+
+    seen.add(item.id);
+    appended.push(item);
+  }
+
+  return appended;
+}