import { subscribe, unsubscribe } from "./api";

const STORAGE_KEY = "notification_enabled";

export async function registerNotification() {
  const permission = await Notification.requestPermission();
  if (permission !== "granted") {
    return {
      error: "E_PERMISSION_DENIED",
    };
  }
  if (!("serviceWorker" in navigator) || !("PushManager" in window)) {
    return {
      error: "E_UNSUPPORTED",
    };
  }
  const registration = await navigator.serviceWorker.ready;
  try {
    const subscription = await registration.pushManager.subscribe({
      userVisibleOnly: true,
      applicationServerKey: import.meta.env.VITE_PUBLIC_VAPID_KEY,
    });
    await subscribe(subscription);
    // Store to local storage
    localStorage.setItem(STORAGE_KEY, "true");
    return subscription;
  } catch (err) {
    return {
      error: "Erreur : " + err,
    };
  }
}

export function isNotificationEnabled() {
  return localStorage.getItem(STORAGE_KEY) === "true";
}

export async function unregisterNotification() {
  const registration = await navigator.serviceWorker.ready;
  const subscription = await registration.pushManager.getSubscription();
  if (subscription) {
    await subscription.unsubscribe();
    localStorage.removeItem(STORAGE_KEY);
    await unsubscribe(subscription);
  }
}