const STATE_FILENAME = Deno.env.get("STATE_FILENAME") ?? "./state.json";

type State = { [offerSlug: string]: { canClaimOffer: boolean, cannotClaimReason?: string, claimBy: string } };

export async function loadState(): Promise<State> {
  try {
    const data = await Deno.readTextFile(STATE_FILENAME);
    return JSON.parse(data) as State;
  } catch (err) {
    if (!(err instanceof Deno.errors.NotFound)) {
      throw err;
    }
    return {};
  }
}

export async function saveState(state: State): Promise<void> {
  const data = JSON.stringify(state);
  await Deno.writeTextFile(STATE_FILENAME, data);
}