import { AthenaChatAttachmentView, AthenaChatMember, AthenaChatMessage, AthenaChatReactionCount, AthenaChatRoom } from '@xylex-group/athena';
import { AthenaChatViewAttachment, AthenaChatViewMember, AthenaChatViewMessage, AthenaChatViewReaction, AthenaChatViewRoom } from './types.js';
/**
 * Projects a wire attachment onto the view model.
 *
 * `storage_key`, `bucket` and `visibility` are intentionally not copied: they
 * describe where the blob physically lives and must never reach the browser.
 *
 * `public_url_path` is also deliberately dropped. It is an unauthenticated URL,
 * so anything rendered from it stays readable after the viewer loses access to
 * the room. `proxy_url_path` already covers `<img src>` and stays subject to
 * authorization, so there is no case where the public path is the right choice
 * for a chat surface.
 */
export declare function mapAttachment(attachment: AthenaChatAttachmentView): AthenaChatViewAttachment;
export declare function mapReaction(reaction: AthenaChatReactionCount): AthenaChatViewReaction;
export declare function mapMessage(message: AthenaChatMessage): AthenaChatViewMessage;
export declare function mapRoom(room: AthenaChatRoom, lastReadSeq?: number): AthenaChatViewRoom;
export declare function mapMember(member: AthenaChatMember): AthenaChatViewMember;
/**
 * Merges incoming messages into an existing list, keyed by id.
 *
 * Optimistic sends are keyed by `clientMessageId` until the gateway echoes a
 * real id back, so the placeholder is replaced rather than duplicated.
 */
export declare function mergeMessages(current: readonly AthenaChatViewMessage[], incoming: readonly AthenaChatViewMessage[]): AthenaChatViewMessage[];
/**
 * Inserts or replaces a room, keeping the most recently active room first.
 *
 * Distinct from the transport-agnostic `upsertRoom` helper, which preserves the
 * caller's ordering; this variant owns the recency sort the room rail needs.
 * Rooms with no messages yet fall back to their creation time so a freshly
 * created room does not sink to the bottom of the list.
 */
export declare function upsertViewRoom(rooms: readonly AthenaChatViewRoom[], room: AthenaChatViewRoom): AthenaChatViewRoom[];