export type WsOutEvent =
  | { room_id: string; project_id?: undefined | null; event: WsEventPayload; error?: undefined | null }
  | { room_id?: undefined | null; project_id: string; event: WsEventPayload; error?: undefined | null }
  | { room_id?: undefined | null; project_id?: undefined | null; error: string };

export type WsEventPayload =
  | { type: 'room_message'; data: RoomMessagePayload }
  | { type: 'project_event'; data: ProjectEventPayload }
  | { type: 'ai_stream_chunk'; data: AiStreamChunkPayload };

export type RoomMessagePayload = {
  id: string;
  room_id: string;
  sender_type: string;
  sender_id?: string | null;
  thread_id?: string | null;
  content: string;
  content_type: string;
  send_at: string;
  seq: number;
  display_name?: string | null;
};

export type ProjectEventPayload = {
  event_type: string;
  project_id: string;
  room_id?: string | null;
  category_id?: string | null;
  message_id?: string | null;
  seq?: number | null;
  timestamp: string;
};

export type AiStreamChunkPayload = {
  message_id: string;
  room_id: string;
  content: string;
  done: boolean;
  error?: string | null;
};

export type RoomWsStatus = 'idle' | 'connecting' | 'open' | 'closing' | 'closed' | 'error';

export function isRoomMessageEvent(
  event: WsOutEvent,
): event is Extract<WsOutEvent, { room_id: string; event: { type: 'room_message'; data: RoomMessagePayload } }> {
  return 'event' in event && !('error' in event) && event.event?.type === 'room_message';
}

export function isAiStreamChunkEvent(
  event: WsOutEvent,
): event is Extract<WsOutEvent, { room_id: string; event: { type: 'ai_stream_chunk'; data: AiStreamChunkPayload } }> {
  return 'event' in event && !('error' in event) && event.event?.type === 'ai_stream_chunk';
}

export function isProjectEvent(
  event: WsOutEvent,
): event is Extract<WsOutEvent, { project_id: string; event: { type: 'project_event'; data: ProjectEventPayload } }> {
  return 'event' in event && !('error' in event) && event.event?.type === 'project_event';
}

export type {
  RoomResponse,
  RoomCategoryResponse,
  RoomMessageResponse,
  RoomMessageListResponse,
  RoomMemberResponse,
  RoomThreadResponse,
  UserInfo,
  ReactionItem,
  ReactionListData,
  SearchResultData,
  EditHistoryEntry,
  AiConfigData,
  NotificationData,
  NotificationListData,
  MentionData,
  MentionListData,
  SubscribeData,
  MessageEditHistoryResponse,
} from './ws-protocol';