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

const ENABLED_KEY = "beenvoice_app_lock_enabled";
const PIN_KEY = "beenvoice_app_lock_pin";
const BIOMETRIC_KEY = "beenvoice_app_lock_biometric";

export async function getAppLockEnabled(): Promise<boolean> {
  const value = await SecureStore.getItemAsync(ENABLED_KEY);
  return value === "1";
}

export async function setAppLockEnabled(enabled: boolean): Promise<void> {
  if (enabled) {
    await SecureStore.setItemAsync(ENABLED_KEY, "1");
  } else {
    await SecureStore.deleteItemAsync(ENABLED_KEY);
  }
}

export async function getStoredPin(): Promise<string | null> {
  return SecureStore.getItemAsync(PIN_KEY);
}

export async function setStoredPin(pin: string): Promise<void> {
  await SecureStore.setItemAsync(PIN_KEY, pin);
}

export async function clearStoredPin(): Promise<void> {
  await SecureStore.deleteItemAsync(PIN_KEY);
}

export async function getBiometricEnabled(): Promise<boolean> {
  const value = await SecureStore.getItemAsync(BIOMETRIC_KEY);
  return value === "1";
}

export async function setBiometricEnabled(enabled: boolean): Promise<void> {
  if (enabled) {
    await SecureStore.setItemAsync(BIOMETRIC_KEY, "1");
  } else {
    await SecureStore.deleteItemAsync(BIOMETRIC_KEY);
  }
}

export function isValidPin(pin: string): boolean {
  return /^\d{4,6}$/.test(pin);
}