@cossistant/next/use-grouped-messages.d.ts

Next.js-ready SDK for building AI-powered support/chat widgets. Hooks + primitives, WS-driven, TypeScript-first. Next.js-ready, Tailwind optional.

//#region ../react/src/hooks/private/use-grouped-messages.d.ts

type GroupedMessage = {
  type: "message_group";
  senderId: string;
  senderType: SenderType;
  items: TimelineItem[];
  firstMessageId: string;
  lastMessageId: string;
  firstMessageTime: Date;
  lastMessageTime: Date;
};
type TimelineEventItem = {
  type: "timeline_event";
  item: TimelineItem;
  timestamp: Date;
};
type TimelineToolItem = {
  type: "timeline_tool";
  item: TimelineItem;
  tool: string | null;
  timestamp: Date;
};
type ConversationItem = GroupedMessage | TimelineEventItem | TimelineToolItem;
type UseGroupedMessagesOptions = {
  items: TimelineItem[];
  seenData?: ConversationSeen[];
  currentViewerId?: string;
  viewerType?: SenderType;
};
type UseGroupedMessagesProps = UseGroupedMessagesOptions;
/**
 * Batches sequential timeline items from the same sender into groups and enriches
 * them with read-receipt helpers so UIs can render conversation timelines with
 * minimal effort. Seen data is normalised into quick lookup maps for unread
 * indicators.
 */
declare const useGroupedMessages: ({
  items,
  seenData,
  currentViewerId,
  viewerType
}: UseGroupedMessagesOptions) => {
  items: ConversationItem[];
  seenByMap: Map<string, Set<string>>;
  lastReadMessageMap: Map<string, string>;
  unreadCountMap: Map<string, number>;
  isMessageSeenByViewer: (messageId: string) => boolean;
  getMessageSeenBy: (messageId: string) => readonly string[];
  getLastReadMessageId: (userId: string) => string | undefined;
  isLastReadMessage: (messageId: string, userId: string) => boolean;
  getUnreadCount: (userId: string) => number;
  hasUnreadAfter: (messageId: string, userId: string) => boolean;
};
//#endregion
export { ConversationItem, GroupedMessage, TimelineEventItem, TimelineToolItem, UseGroupedMessagesOptions, UseGroupedMessagesProps, useGroupedMessages };
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