import { useContext, useMemo, useSyncExternalStore } from "react";
import { LoginSession, LoginState } from "../login";
import { SnortContext } from "@snort/system-react";
import { LNVpsApi } from "../api";
import { ApiUrl } from "../const";

export default function useLogin() {
  const session = useSyncExternalStore(
    (c) => LoginState.hook(c),
    () => LoginState.snapshot(),
  );
  const system = useContext(SnortContext);
  return useMemo(
    () =>
      session
        ? {
          type: session.type,
          publicKey: session.publicKey,
          system,
          currency: session.currency,
          api: new LNVpsApi(ApiUrl, LoginState.getSigner()),
          update: (fx: (ses: LoginSession) => void) => LoginState.updateSession(fx),
          logout: () => LoginState.logout(),
        }
        : undefined,
    [session, system],
  );
}