export const DELETED_MESSAGE_CONTENT = '[Message deleted]';

export interface LinkMetadata {
  url: string;
  title?: string;
  description?: string;
  imageUrl?: string;
  siteName?: string;
  failed?: boolean;
}

export interface Message {
  id: string;
  roomId: string;
  channelId?: string;
  senderId: string;
  senderName: string;
  content: string;
  timestamp: number;
  kind?: 'user' | 'system';
  systemEvent?: 'call-started';
  editedAt?: number;
  revision?: number;
  headHash?: string;
  reactions: Reaction[];
  isDeleted: boolean;
  replyToId?: string;
  linkMetadata?: LinkMetadata[];
  /** Originating client instance when relayed through signaling for multi-device sync. */
  clientInstanceId?: string;
}

export interface Reaction {
  id: string;
  messageId: string;
  oderId: string;
  userId: string;
  emoji: string;
  timestamp: number;
}