/**
 *  Possible MQTT packet types
 */
export const PacketType = {
  reserved: 0,
  connect: 1,
  connack: 2,
  publish: 3,
  puback: 4,
  pubrec: 5,
  pubrel: 6,
  pubcomp: 7,
  subscribe: 8,
  suback: 9,
  unsubscribe: 10,
  unsuback: 11,
  pingreq: 12,
  pingres: 13,
  disconnect: 14,
  auth: 15,
} as const;

/**
 * Reverse lookup for packet types
 */
export const PacketNameByType: Record<number, string> = Object.fromEntries(
  Object.entries(PacketType).map(([k, v]) => [v, k]),
);

/**
 * Type to limit packet type to valid values
 */
export type PacketType = typeof PacketType[keyof typeof PacketType];