import { type NotificationPrefs, type QuietHours } from "../../schemas/notification-prefs.schema";
/** The push kinds a preference can gate. */
export type PushEvent = "waitingInput" | "sessionFailed";
/**
 * Read a stored preference blob.
 *
 * NULL and anything that no longer parses both come back `null`, which the send
 * path treats as "everything on". Failing open is deliberate: a corrupt row
 * must not silently mute the one notification the user is waiting for.
 */
export declare function parseStoredPrefs(raw: string | null): NotificationPrefs | null;
/**
 * Is `now` inside the user's quiet hours?
 *
 * A window that ends earlier than it starts runs overnight and belongs to the
 * day it starts on: Friday 22:00–08:00 covers Saturday until 08:00 and uses
 * Friday's entry, not Saturday's. `from === to` is an empty window, not 24h —
 * "always quiet" is what turning the notification off is for.
 */
export declare function isQuietNow(qh: QuietHours, now: Date): boolean;
/** Should a push of this kind reach a device with these preferences right now? */
export declare function allows(prefs: NotificationPrefs | null, event: PushEvent, now: Date): boolean;
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