homebridge-wemo/lib/device/link-hub.js

Homebridge plugin to integrate Wemo devices into HomeKit.

import { create as xmlCreate } from 'xmlbuilder'

export default class {
  constructor(platform, accessory, devicesInHB) {
    // Set up variables from the platform
    this.devicesInHB = devicesInHB
    this.hapChar = platform.api.hap.Characteristic
    this.hapErr = platform.api.hap.HapStatusError
    this.hapServ = platform.api.hap.Service
    this.platform = platform

    // Set up variables from the accessory
    this.accessory = accessory
  }

  receiveDeviceUpdate(deviceId, attribute) {
    // Find the accessory to which this relates
    this.devicesInHB.forEach((accessory) => {
      if (
        accessory.context.serialNumber === deviceId
        && accessory.control?.receiveDeviceUpdate
      ) {
        accessory.control.receiveDeviceUpdate(attribute)
      }
    })
  }

  async sendDeviceUpdate(deviceId, capability, value) {
    // Generate the XML to send
    const deviceStatusList = xmlCreate('DeviceStatus', {
      version: '1.0',
      encoding: 'utf-8',
    })
      .ele({
        IsGroupAction: deviceId.length === 10 ? 'YES' : 'NO',
        DeviceID: deviceId,
        CapabilityID: capability,
        CapabilityValue: value,
      })
      .end()

    // Send the update
    return this.platform.httpClient.sendDeviceUpdate(
      this.accessory,
      'urn:Belkin:service:bridge:1',
      'SetDeviceStatus',
      {
        DeviceStatusList: { '#text': deviceStatusList },
      },
    )
  }

  async requestDeviceUpdate(deviceId) {
    return this.platform.httpClient.sendDeviceUpdate(
      this.accessory,
      'urn:Belkin:service:bridge:1',
      'GetDeviceStatus',
      {
        DeviceIDs: deviceId,
      },
    )
  }
}