export type UserStatus = 'online' | 'away' | 'busy' | 'offline';

export type UserRole = 'host' | 'admin' | 'moderator' | 'member';

export type ChannelType = 'text' | 'voice';

export const DELETED_MESSAGE_CONTENT = '[Message deleted]';

export interface User {
  id: string;
  oderId: string;
  username: string;
  displayName: string;
  avatarUrl?: string;
  status: UserStatus;
  role: UserRole;
  joinedAt: number;
  peerId?: string;
  isOnline?: boolean;
  isAdmin?: boolean;
  isRoomOwner?: boolean;
  voiceState?: VoiceState;
  screenShareState?: ScreenShareState;
}

export interface RoomMember {
  id: string;
  oderId?: string;
  username: string;
  displayName: string;
  avatarUrl?: string;
  role: UserRole;
  joinedAt: number;
  lastSeenAt: number;
}

export interface Channel {
  id: string;
  name: string;
  type: ChannelType;
  position: number;
}

export interface Message {
  id: string;
  roomId: string;
  channelId?: string;
  senderId: string;
  senderName: string;
  content: string;
  timestamp: number;
  editedAt?: number;
  reactions: Reaction[];
  isDeleted: boolean;
  replyToId?: string;
}

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

export interface Room {
  id: string;
  name: string;
  description?: string;
  topic?: string;
  hostId: string;
  password?: string;
  isPrivate: boolean;
  createdAt: number;
  userCount: number;
  maxUsers?: number;
  icon?: string;
  iconUpdatedAt?: number;
  permissions?: RoomPermissions;
  channels?: Channel[];
  members?: RoomMember[];
}

export interface RoomSettings {
  name: string;
  description?: string;
  topic?: string;
  isPrivate: boolean;
  password?: string;
  maxUsers?: number;
  rules?: string[];
}

export interface RoomPermissions {
  adminsManageRooms?: boolean;
  moderatorsManageRooms?: boolean;
  adminsManageIcon?: boolean;
  moderatorsManageIcon?: boolean;
  allowVoice?: boolean;
  allowScreenShare?: boolean;
  allowFileUploads?: boolean;
  slowModeInterval?: number;
}

export interface BanEntry {
  oderId: string;
  userId: string;
  roomId: string;
  bannedBy: string;
  displayName?: string;
  reason?: string;
  expiresAt?: number;
  timestamp: number;
}

export interface PeerConnection {
  peerId: string;
  userId: string;
  status: 'connecting' | 'connected' | 'disconnected' | 'failed';
  dataChannel?: RTCDataChannel;
  connection?: RTCPeerConnection;
}

export interface VoiceState {
  isConnected: boolean;
  isMuted: boolean;
  isDeafened: boolean;
  isSpeaking: boolean;
  isMutedByAdmin?: boolean;
  volume?: number;
  roomId?: string;
  serverId?: string;
}

export interface ScreenShareState {
  isSharing: boolean;
  streamId?: string;
  sourceId?: string;
  sourceName?: string;
}

export type SignalingMessageType =
  | 'offer'
  | 'answer'
  | 'ice-candidate'
  | 'join'
  | 'leave'
  | 'chat'
  | 'state-sync'
  | 'kick'
  | 'ban'
  | 'host-change'
  | 'room-update';

export interface SignalingMessage {
  type: SignalingMessageType;
  from: string;
  to?: string;
  payload: unknown;
  timestamp: number;
}

export type ChatEventType =
  | 'message'
  | 'chat-message'
  | 'edit'
  | 'message-edited'
  | 'delete'
  | 'message-deleted'
  | 'reaction'
  | 'reaction-added'
  | 'reaction-removed'
  | 'kick'
  | 'ban'
  | 'room-deleted'
  | 'host-change'
  | 'room-settings-update'
  | 'voice-state'
  | 'chat-inventory-request'
  | 'chat-inventory'
  | 'chat-sync-request-ids'
  | 'chat-sync-batch'
  | 'chat-sync-summary'
  | 'chat-sync-request'
  | 'chat-sync-full'
  | 'file-announce'
  | 'file-chunk'
  | 'file-request'
  | 'file-cancel'
  | 'file-not-found'
  | 'member-roster-request'
  | 'member-roster'
  | 'member-leave'
  | 'voice-state-request'
  | 'state-request'
  | 'screen-state'
  | 'screen-share-request'
  | 'screen-share-stop'
  | 'role-change'
  | 'room-permissions-update'
  | 'server-icon-summary'
  | 'server-icon-request'
  | 'server-icon-full'
  | 'server-icon-update'
  | 'server-state-request'
  | 'server-state-full'
  | 'unban'
  | 'channels-update';

export interface ChatInventoryItem {
  id: string;
  ts: number;
  rc: number;
  ac?: number;
}

export interface ChatAttachmentAnnouncement {
  id: string;
  filename: string;
  size: number;
  mime: string;
  isImage: boolean;
  uploaderPeerId?: string;
}

export interface ChatAttachmentMeta extends ChatAttachmentAnnouncement {
  messageId: string;
  filePath?: string;
  savedPath?: string;
}

/** Optional fields depend on `type`. */
export interface ChatEvent {
  type: ChatEventType;
  fromPeerId?: string;
  messageId?: string;
  message?: Message;
  reaction?: Reaction;
  data?: string | Partial<Message>;
  timestamp?: number;
  targetUserId?: string;
  roomId?: string;
  items?: ChatInventoryItem[];
  ids?: string[];
  messages?: Message[];
  attachments?: Record<string, ChatAttachmentMeta[]>;
  total?: number;
  index?: number;
  count?: number;
  lastUpdated?: number;
  file?: ChatAttachmentAnnouncement;
  fileId?: string;
  hostId?: string;
  hostOderId?: string;
  previousHostId?: string;
  previousHostOderId?: string;
  kickedBy?: string;
  bannedBy?: string;
  content?: string;
  editedAt?: number;
  deletedAt?: number;
  deletedBy?: string;
  oderId?: string;
  displayName?: string;
  emoji?: string;
  reason?: string;
  settings?: RoomSettings;
  permissions?: Partial<RoomPermissions>;
  voiceState?: Partial<VoiceState>;
  isScreenSharing?: boolean;
  icon?: string;
  iconUpdatedAt?: number;
  role?: UserRole;
  room?: Room;
  channels?: Channel[];
  members?: RoomMember[];
  ban?: BanEntry;
  bans?: BanEntry[];
  banOderId?: string;
  expiresAt?: number;
}

export interface ServerInfo {
  id: string;
  name: string;
  description?: string;
  topic?: string;
  hostName: string;
  ownerId?: string;
  ownerName?: string;
  ownerPublicKey?: string;
  userCount: number;
  maxUsers: number;
  isPrivate: boolean;
  tags?: string[];
  createdAt: number;
  sourceId?: string;
  sourceName?: string;
}

export interface JoinRequest {
  roomId: string;
  userId: string;
  username: string;
}

export interface AppState {
  currentUser: User | null;
  currentRoom: Room | null;
  isConnecting: boolean;
  error: string | null;
}