homebridge-eveatmo/accessory/eveatmo-weather-accessory.js

Homebridge plugin which adds a Netatmo weatherstation as HomeKit device and tries to act like Elgato Eve Room/Weather

'use strict';

var homebridge;
var Characteristic;
var NetatmoAccessory;
var path = require('path');
var mainDeviceId = false;
var FakeGatoHistoryService;

module.exports = function(pHomebridge) {
  if (pHomebridge && !homebridge) {
    homebridge = pHomebridge;
    NetatmoAccessory = require('../lib/netatmo-accessory')(homebridge);
    Characteristic = homebridge.hap.Characteristic;
    FakeGatoHistoryService = require('fakegato-history')(homebridge);
  }

  class EveatmoWeatherAccessory extends NetatmoAccessory {
    constructor(deviceData, netatmoDevice) {

      for (var deviceId in netatmoDevice.deviceData) {
        if (!netatmoDevice.deviceData.hasOwnProperty(deviceId)) {
          continue;
        }
        var device = netatmoDevice.deviceData[deviceId];

        if(device.dashboard_data && device.dashboard_data.Pressure) {
          mainDeviceId = deviceId;
        }
      }

      var accessoryConfig = {
        'id': deviceData._id,
        'model': 'Eve Weather',
        'netatmoType': deviceData.type,
        'firmware': String(deviceData.firmware),
        'name': deviceData._name || 'Eveatmo ' + netatmoDevice.deviceType + ' ' + deviceData._id,
        'hasBattery': (deviceData.battery_vp)?true:false,
      };

      super(homebridge, accessoryConfig, netatmoDevice);
      this.buildServices(accessoryConfig);

      this.currentTemperature = 11.1;
      this.batteryPercent = 100;
      this.lowBattery = false;
      this.humidity = 50;
      this.pressure = 1000.0;

      this.refreshData((err, data) => {});
    }

    buildServices(accessoryConfig) {
      var serviceDir = path.dirname(__dirname) + '/service';
      try {
        var TemperatureService = require(serviceDir + '/eveatmo-temperature')(homebridge);
        var serviceTemperature = new TemperatureService(this);
        this.addService(serviceTemperature);

        var HumidityService = require(serviceDir + '/eveatmo-humidity')(homebridge);
        var serviceHumidity = new HumidityService(this);
        this.addService(serviceHumidity);

        var EveatmoWeatherPressureService = require(serviceDir + '/eveatmo-weather-pressure')(homebridge);
        var servicePressure = new EveatmoWeatherPressureService(this);
        this.addService(servicePressure);

        if(accessoryConfig.hasBattery) {
          var EveatmoBatteryService = require(serviceDir + '/eveatmo-battery')(homebridge);
          var serviceBattery = new EveatmoBatteryService(this);
          this.addService(serviceBattery);
        }

        this.historyService = new FakeGatoHistoryService('weather', this, { storage:'fs' });

      } catch (err) {
        this.log.warn('Could not process service files for ' + accessoryConfig.name);
        this.log.warn(err);
        this.log.warn(err.stack);
      }
    }

    notifyUpdate(deviceData, force) {
      var accessoryData = this.extractAccessoryData(deviceData);
      if(!accessoryData.reachable && !force) {
        return;
      }

      var weatherData = this.mapAccessoryDataToWeatherData(accessoryData);


      // transfer NAMain's pressure value to outdoor-module
      if(mainDeviceId) {
        if(deviceData[mainDeviceId]) {
          weatherData.pressure = deviceData[mainDeviceId].dashboard_data.Pressure;
        }
      }

      this.historyService.addEntry({
        time: new Date().getTime() / 1000,
        temp: weatherData.currentTemperature,
        pressure: weatherData.pressure,
        humidity: weatherData.humidity,
      });

      this.applyWeatherData(weatherData);
    }

    mapAccessoryDataToWeatherData(accessoryData) {
      var result = {};
      var dashboardData = accessoryData.dashboard_data;
      if (dashboardData) {
        if (dashboardData.hasOwnProperty('Temperature')) {
          result.currentTemperature = dashboardData.Temperature;
        }
        if (dashboardData.Humidity) {
          result.humidity = dashboardData.Humidity;
        }
      }

      result.batteryPercent = accessoryData.battery_percent;
      if (!result.batteryPercent) {
        result.batteryPercent = 100;
      }
      result.lowBattery = (result.batteryPercent <= 20) ? true : false;

      return result;
    }

    applyWeatherData(weatherData) {
      var dataChanged = false;

      if (weatherData.hasOwnProperty('currentTemperature') && this.currentTemperature != weatherData.currentTemperature) {
        this.currentTemperature = weatherData.currentTemperature;
        dataChanged = true;
      }
      if (weatherData.humidity && this.humidity != weatherData.humidity) {
        this.humidity = weatherData.humidity;
        dataChanged = true;
      }
      if (weatherData.pressure && this.pressure != weatherData.pressure) {
        this.pressure = weatherData.pressure;
        dataChanged = true;
      }
      if (weatherData.batteryPercent && this.batteryPercent != weatherData.batteryPercent) {
        this.batteryPercent = weatherData.batteryPercent;
        dataChanged = true;
      }
      if (this.lowBattery != weatherData.lowBattery) {
        this.lowBattery = weatherData.lowBattery;
        dataChanged = true;
      }

      if (dataChanged) {
        this.getServices().forEach(
          (svc) => {
            var call = svc.updateCharacteristics && svc.updateCharacteristics();
          },
        );
      }
    }
  }
  return EveatmoWeatherAccessory;
};