export type Protocols = {
  SDT: 1;
};

export type UDPPreamble = {
  preambleSize: number;
  postambleSize: number;
  packetIdentifier: string;
};

export type ACNPacket<PreambleType, PDUBlockType, PostambleType> = {
  preamble: PreambleType;
  pduBlock: PDUBlockType;
  postamble: PostambleType;
};

export type RootLayerPDU = {
  vector: number;
  header: string;
  data: Uint8Array;
};

export enum SessionDataTransportVectors {
  REL_WRAP = 1,
  UNREL_WRAP,
  CHANNEL_PARAMS,
  JOIN,
  JOIN_REFUSE,
  JOIN_ACCEPT,
  LEAVE,
  LEAVING,
  CONNECT,
  CONNECT_ACCEPT,
  CONNECT_REFUSE,
  DISCONNECT,
  DISCONNECTING,
  ACK,
  NAK,
  GET_SESSIONS,
  SESSIONS,
}

export enum TransportLayerAddressTypes {
  SDT_ADDR_NULL = 0,
  SDT_ADDR_IPV4,
  SDT_ADDR_IPV6,
}

export type SDTChannelParams = {
  expiry: number;
  nakOutboundFlag: number;
  nakHoldoff: number;
  nakModulus: number;
  nakMaxWait: number;
};

export type TransportLayerAddress = {
  type: TransportLayerAddressTypes;
  port?: number;
  address?: string;
};

export type SDTJoinData = {
  componentID: string;
  memberID: number;
  channelNumber: number;
  reciprocalChannel: number;
  totalSequenceNumber: number;
  reliableSequenceNumber: number;
  destinationAddress: TransportLayerAddress;
  channelParameters: SDTChannelParams;
  adhocExpiry: number;
};

export type SDTJoinAcceptData = {
  leaderComponentID: string;
  channelNumber: number;
  memberID: number;
  reliableSequenceNumber: number;
  reciprocalChannel: number;
};

export type SDTJoinRefuseData = {
  leaderComponentID: string;
  channelNumber: number;
  memberID: number;
  reliableSequenceNumber: number;
  refuseCode: number;
};

export type SessionDataTransportPDU = {
  vector: SessionDataTransportVectors;
  // TODO(jwetzell): cleanup these types
  data: SDTJoinData | SDTJoinAcceptData | SDTJoinRefuseData| Uint8Array;
};