Source

// The documents this browser created or opened as owner, kept on this device only (with their admin keys).
export interface MyDoc { id: string; key: string; title: string; at: number }
const KEY = "sign:docs";

export function myDocs(): MyDoc[] {
  try { return JSON.parse(localStorage.getItem(KEY) || "[]"); } catch { return []; }
}
/** Adds or updates a document, keeping when it was first remembered. Newest first. */
export function rememberDoc(d: MyDoc) {
  const list = myDocs();
  const prev = list.find((x) => x.id === d.id);
  const next = [{ ...d, at: prev?.at ?? d.at }, ...list.filter((x) => x.id !== d.id)];
  try { localStorage.setItem(KEY, JSON.stringify(next.slice(0, 100))); } catch { /* storage full or blocked */ }
}
export function docKey(id: string): string | null {
  return myDocs().find((d) => d.id === id)?.key ?? null;
}