import type { AtUriString, DatetimeString, DidString } from '@atproto/lex-schema';
import type { NotificationsV2Algorithm } from '../../../../../config.js';
import type { Notification, NotificationFeed } from '../../../../../proto/bsky_pb.js';
import { type AppviewNotificationReason, type DataplaneNotificationReason, NOTIFICATION_REASON } from '../constants.js';
type DataplaneNotificationReasonWithSubject = typeof NOTIFICATION_REASON.LIKE | typeof NOTIFICATION_REASON.REPOST | typeof NOTIFICATION_REASON.LIKE_VIA_REPOST | typeof NOTIFICATION_REASON.REPOST_VIA_REPOST | typeof NOTIFICATION_REASON.REPLY | typeof NOTIFICATION_REASON.QUOTE | typeof NOTIFICATION_REASON.STARTERPACK_JOINED;
export type RawNotification = {
    recipientDid: DidString;
    uri: AtUriString;
    indexedAt: DatetimeString;
} & ({
    reason: DataplaneNotificationReasonWithSubject;
    reasonSubject: AtUriString;
} | {
    reason: typeof NOTIFICATION_REASON.FOLLOW | typeof NOTIFICATION_REASON.FOLLOW_BACK;
    reasonSubject: AtUriString | undefined;
} | {
    reason: Exclude<DataplaneNotificationReason, DataplaneNotificationReasonWithSubject | typeof NOTIFICATION_REASON.FOLLOW | typeof NOTIFICATION_REASON.FOLLOW_BACK>;
    reasonSubject: undefined;
});
export type NotificationItem = {
    raw: RawNotification;
    id: string;
    groupingKey: string;
    actorDid: DidString;
    indexedTime: number;
};
export declare const buildNotificationItem: (raw: RawNotification, id: string, groupingKey: string, actorDid: DidString) => NotificationItem;
export type NotificationGroup = {
    id: string;
    kind: AppviewNotificationReason;
    groupingKey: string;
    actorDids: DidString[];
    itemCount: number;
    indexedAt: DatetimeString;
    firstIndexedAt: DatetimeString;
    isRead: boolean;
    items: NotificationItem[];
};
export type GroupingResult = {
    groups: NotificationGroup[];
    cursor?: string;
};
export type GroupBuilder = (items: NotificationItem[]) => GroupingResult;
export type GroupBuilderFactory = (limit: number, now: number, seenAt?: number, feed?: NotificationFeed) => GroupBuilder;
export type BurstSplitter = (items: NotificationItem[], now: number, timeSpanMultiplier: number) => NotificationItem[][];
type GroupingAlgorithm = {
    createGroupBuilder: GroupBuilderFactory;
    splitBursts: BurstSplitter;
};
export declare function parseRawNotification(notification: Notification): RawNotification | undefined;
/** Select matching implementations for ordinary grouping and spotlight bursts. */
export declare const getGroupingAlgorithm: (algorithm: NotificationsV2Algorithm) => GroupingAlgorithm;
export {};
//# sourceMappingURL=grouping.d.ts.map