Promise support about node-ads HOT 12 OPEN

export enum AdsTypeLength {
  BOOL = 1,
  BYTE = 1,
  WORD = 2,
  DWORD = 4,
  SINT = 1,
  USINT = 1,
  INT = 2,
  UINT = 2,
  DINT = 4,
  UDINT = 4,
  LINT = 8,
  ULINT = 8,
  REAL = 4,
  LREAL = 8,
  TIME = 4,
  TIME_OF_DAY = 4,
  TOD = 4, // TIME_OF_DAY alias
  DATE = 4,
  DATE_AND_TIME = 4,
  DT = 4, // DATE_AND_TIME alias
  STRING = 81
}

export enum AdsNotify {
  CYCLIC = 3,
  ONCHANGE = 4
}

export interface AdsOptions {
  host: string
  // The NetId of the target machine
  amsNetIdTarget: string
  // The NetId of the source machine.
  // You can choose anything in the form of x.x.x.x.x.x,
  // but on the target machine this must be added as a route.
  amsNetIdSource: string

  // OPTIONAL: (These are set by default)
  // The tcp destination port
  port?: number | string
  // The ams source port
  amsPortSource?: number | string
  // The ams target port for TwinCat Runtime
  amsPortTarget?: number | string
  // The timeout for PLC requests
  timeout?: number
}

interface AdsHandleInterface {
  // Handle name in twincat
  symname: string
  // An ads type object or an array of type objects.
  // You can also specify a number or an array of numbers,
  // the result will then be a buffer object.
  // If not defined, the default will be BOOL.
  bytelength?: AdsTypeLength | AdsTypeLength[]
  // The propery name where the value should be written.
  // This can be an array with the same length as the array length of byteLength.
  // If not defined, the default will be 'value'.
  propname?: string | string[]
}

interface AdsNotificationHandleInterface extends AdsHandleInterface {
  // OPTIONAL: (These are set by default)
  // Notify.ONCHANGE, (other option is Notify.CYCLIC)
  transmissionMode?: AdsNotify
  // Latest time (in ms) after which the event has finished
  maxDelay?: number
  // Time (in ms) after which the PLC server checks whether the variable has changed
  cycleTime?: number
}

type AdsHandleWithValues<H extends AdsHandleInterface, V extends {}> = H & { [value in keyof V]?: V[value] }

export type AdsHandle<V = {value}> = AdsHandleWithValues<AdsHandleInterface, V>
export type AdsNotificationHandle<V = {value}> = AdsHandleWithValues<AdsNotificationHandleInterface, V>

enum AdsClientEvent {
  Error = 'error',
  Notification = 'notification'
}

interface AdsClientEventDataMap {
  [AdsClientEvent.Error]: Error,
  [AdsClientEvent.Notification]: AdsNotificationHandle
}

interface AdsClient {
  connect (options: AdsOptions, cb: () => void): void
  end (): void
  read (handle: AdsHandle, cb: (error: Error, handle: AdsHandle) => void): void
  write (handle: AdsHandle, cb: (error: Error) => void): void
  getSymbols (cb: (error: Error, symbols: any) => void): void
  readState (cb: (error: Error, result: any) => void): void
  on<K extends keyof AdsClientEventDataMap> (data: AdsClientEventDataMap[K]): void
}