import * as Notifications from "expo-notifications";import * as Effect from "effect/Effect";import * as Schema from "effect/Schema";import { Platform } from "react-native"; export type NotificationPermissionResult =  | { readonly type: "unsupported" }  | { readonly type: "granted" }  | { readonly type: "denied"; readonly canAskAgain: boolean }; export class NotificationPermissionReadError extends Schema.TaggedErrorClass<NotificationPermissionReadError>()(  "NotificationPermissionReadError",  {    cause: Schema.Defect(),  },) {  override get message(): string {    return "Failed to read notification permissions on iOS.";  }} export class NotificationPermissionRequestError extends Schema.TaggedErrorClass<NotificationPermissionRequestError>()(  "NotificationPermissionRequestError",  {    cause: Schema.Defect(),  },) {  override get message(): string {    return "Failed to request notification permissions on iOS.";  }} export const requestAgentNotificationPermission: Effect.Effect<  NotificationPermissionResult,  NotificationPermissionReadError | NotificationPermissionRequestError> = Effect.gen(function* () {  if (Platform.OS !== "ios") {    return { type: "unsupported" };  }   const existing = yield* Effect.tryPromise({    try: () => Notifications.getPermissionsAsync(),    catch: (cause) => new NotificationPermissionReadError({ cause }),  });  if (existing.granted) {    return { type: "granted" };  }   if (!existing.canAskAgain) {    return { type: "denied", canAskAgain: false };  }   const requested = yield* Effect.tryPromise({    try: () =>      Notifications.requestPermissionsAsync({        ios: {          allowAlert: true,          allowBadge: true,          allowSound: true,        },      }),    catch: (cause) => new NotificationPermissionRequestError({ cause }),  });  return requested.granted    ? { type: "granted" }    : { type: "denied", canAskAgain: requested.canAskAgain };});