Source

// The pages this browser owns (handle -> owner key), and becoming an owner with a key.
import { get, setMany, serverTimestamp } from "@bounded-sh/client";
import { me } from "./bounded";
import type { PageDoc } from "../../functions/lib/bio";

export interface Saved { handle: string; key: string }

const STORE = "bio:mine";

export function savedPages(): Saved[] {
  try {
    const list = JSON.parse(localStorage.getItem(STORE) || "[]");
    return Array.isArray(list) ? list.filter((s) => s && typeof s.handle === "string" && typeof s.key === "string") : [];
  } catch {
    return [];
  }
}

export const savedKey = (handle: string) => savedPages().find((s) => s.handle === handle)?.key ?? null;

/** Remembers a page newest first, replacing an older key for it. */
export function savePage(handle: string, key: string) {
  const list = savedPages();
  if (list.some((s) => s.handle === handle && s.key === key)) return;
  localStorage.setItem(STORE, JSON.stringify([{ handle, key }, ...list.filter((s) => s.handle !== handle)]));
  window.dispatchEvent(new Event("bio:saved"));
}

/** Makes this browser an owner of the page, presenting the key if it is not one yet. Resolves to the page as stored. */
export async function claimPage(handle: string, key: string): Promise<PageDoc | "badkey" | "missing"> {
  const uid = await me();
  const [owner, doc] = await Promise.all([get(`pages/${handle}/owners/${uid}`), get(`pages/${handle}`)]);
  if (!doc) return "missing";
  if (!owner) {
    try {
      await setMany([
        { path: `pageclaims/${handle}/c/${uid}`, document: { key } },
        { path: `pages/${handle}/owners/${uid}`, document: { at: serverTimestamp() } },
      ]);
    } catch {
      return "badkey";
    }
  }
  return doc as PageDoc;
}