import { createContext, useContext } from "react";

export type NotificationSession = {
  dismissedIds: ReadonlySet<string>;
  readIds: ReadonlySet<string>;
  dismiss: (ids: string[]) => void;
  markRead: (ids: string[]) => void;
  /** At-risk work orders hidden from the SLA banner for this session. */
  slaBannerDismissedIds: ReadonlySet<number>;
  dismissSlaBanner: (workOrderIds: number[]) => void;
  /** Returns the ids not toasted yet this session and marks them toasted, so each toast fires once. */
  claimSlaToasts: (workOrderIds: number[]) => number[];
};

export const NotificationSessionContext = createContext<NotificationSession | null>(null);

export function useNotificationSession(): NotificationSession {
  const session = useContext(NotificationSessionContext);
  if (!session) {
    throw new Error("useNotificationSession must be used within a NotificationSessionProvider");
  }
  return session;
}