import * as SecureStore from 'expo-secure-store';

// Bump when DISCLAIMER / ToS materially changes — forces re-acceptance.
// Minor wording fixes (typos, formatting) don't bump.
export const CURRENT_TOS_VERSION = '1';

const KEY = 'goon.age_gate.accepted_version';

/** Returns true if user already accepted ToS at the current version.
 *
 * Fail-safe: any error reading SecureStore (no lockscreen on Android, keychain
 * quirk) is treated as not-accepted. Cost is minor (user re-accepts), benefit
 * is correctness — we never silently bypass the gate.
 */
export async function isAccepted(): Promise<boolean> {
  try {
    const v = await SecureStore.getItemAsync(KEY);
    return v === CURRENT_TOS_VERSION;
  } catch {
    return false;
  }
}

export async function markAccepted(): Promise<void> {
  try {
    await SecureStore.setItemAsync(KEY, CURRENT_TOS_VERSION);
  } catch {
    // Best-effort; if we can't persist, the user will see the gate again next
    // launch. No worse than not having a gate at all.
  }
}

export async function clearAccepted(): Promise<void> {
  try {
    await SecureStore.deleteItemAsync(KEY);
  } catch {
    // ignore
  }
}