Bugfixes and new feature -- currently testing at home

config.schema.json

@@ -49,6 +49,11 @@
         "type": "string",
         "required": false
       },
+      "use_eco_mode": {
+        "title": "Use Energy Saver for cooling (when available)",
+        "type": "boolean",
+        "required": false
+      },
       "refresh_interval": {
         "title": "Refresh interval (requires Homebridge restart)",
         "type": "number",

src/characteristic/abstractCharacteristic.ts

@@ -4,26 +4,32 @@ import type {
   // eslint-disable-next-line @typescript-eslint/no-unused-vars
   Characteristic as HomebridgeCharacteristic,
   CharacteristicValue,
+  CharacteristicChange,
   CharacteristicGetCallback,
   CharacteristicSetCallback,
   WithUUID,
 } from 'homebridge'
 
 import { HomebridgeLgThinqPlatform } from '../platform'
+import type { LgAirConditionerPlatformAccessory } from '../platformAccessory'
 import type { GetDeviceResponse } from '../thinq/apiTypes'
 
+type Unpacked<T> = T extends (infer U)[] ? U : T
+
 export default abstract class AbstractCharacteristic<
   State extends CharacteristicValue,
   ApiValue extends string | number,
   Characteristic extends WithUUID<{
     new (): HomebridgeCharacteristic
   }> /** Comes from this.platform.Characteristic.____ */
 > {
-  private platform: HomebridgeLgThinqPlatform
-  private service: Service
-  private deviceId: string
+  protected platform: HomebridgeLgThinqPlatform
+  protected service: Service
+  protected device: LgAirConditionerPlatformAccessory
+  protected characteristic: Characteristic /** Comes from this.platform.Characteristic.____ */
+
   private cachedState?: State
-  characteristic: Characteristic /** Comes from this.platform.Characteristic.____ */
+
   private apiCommand: 'Set' | 'Operation'
   private apiDataKey: keyof GetDeviceResponse['result']['snapshot']
 
@@ -34,14 +40,14 @@ export default abstract class AbstractCharacteristic<
   constructor(
     platform: HomebridgeLgThinqPlatform,
     service: Service,
-    deviceId: string,
+    device: LgAirConditionerPlatformAccessory,
     characteristic: Characteristic,
     apiCommand: 'Set' | 'Operation',
     apiDataKey: keyof GetDeviceResponse['result']['snapshot'],
   ) {
     this.platform = platform
     this.service = service
-    this.deviceId = deviceId
+    this.device = device
     this.characteristic = characteristic
     this.apiCommand = apiCommand
     this.apiDataKey = apiDataKey
@@ -56,6 +62,12 @@ export default abstract class AbstractCharacteristic<
         .getCharacteristic(this.characteristic)
         .on(CharacteristicEventTypes.SET, this.handleSet.bind(this))
     }
+
+    if (this.handleChange) {
+      this.service
+        .getCharacteristic(this.characteristic)
+        .on(CharacteristicEventTypes.CHANGE, this.handleChange.bind(this))
+    }
   }
 
   /** Transform Homebridge state to what the ThinQ API expects */
@@ -67,20 +79,34 @@ export default abstract class AbstractCharacteristic<
   abstract getApiValueFromState(state: State): ApiValue
 
   /** Take in an updated device snapshot */
-  handleUpdatedSnapshot(snapshot: GetDeviceResponse['result']['snapshot']) {
+  handleUpdatedSnapshot(
+    snapshot: Unpacked<GetDeviceResponse['result']['snapshot']>,
+  ) {
     try {
+      this.logDebug('HandleSnapshot for ' + this.characteristic.name)
+
       const apiValue = snapshot[this.apiDataKey] as ApiValue
       this.logDebug('handleUpdatedSnapshot', apiValue)
+
       this.cachedState = this.getStateFromApiValue(apiValue)
       this.service.updateCharacteristic(this.characteristic, this.cachedState)
     } catch (error) {
       this.logError('Error parsing state', error.toString())
     }
   }
 
+  /** Handle a "change" command from Homebridge to update this characteristic */
+  handleChange?(value: CharacteristicChange) {
+    this.logDebug(
+      'Triggered CHANGE ignored! Consider implementing for this characteristic. newValue:',
+      value.newValue,
+    )
+  }
+
   /** Handle a "set" command from Homebridge to update this characteristic */
   handleSet?(value: CharacteristicValue, callback: CharacteristicSetCallback) {
     this.logDebug('Triggered SET:', value)
+
     if (!this.thinqApi) {
       this.logError('API not initialized yet')
       return
@@ -92,9 +118,9 @@ export default abstract class AbstractCharacteristic<
     )
     this.logDebug('targetState', targetState)
 
+    // The air conditioner will make a sound every time this API is called.
+    // To avoid unnecessary chimes, we'll optimistically skip sending the API call.
     if (targetState === this.cachedState) {
-      // The air conditioner will make a sound every time this API is called.
-      // To avoid unnecessary chimes, we'll optimistically skip sending the API call.
       this.logDebug('State equals cached state. Skipping.', targetState)
       callback(null, targetState)
       return
@@ -103,7 +129,12 @@ export default abstract class AbstractCharacteristic<
     const apiValue = this.getApiValueFromState(targetState)
 
     this.thinqApi
-      .sendCommand(this.deviceId, this.apiCommand, this.apiDataKey, apiValue)
+      .sendCommand(
+        this.device.getDeviceId() || '',
+        this.apiCommand,
+        this.apiDataKey,
+        apiValue,
+      )
       .then(() => {
         this.cachedState = targetState
         callback(null, targetState)
@@ -134,4 +165,91 @@ export default abstract class AbstractCharacteristic<
       ...parameters,
     )
   }
+
+  deviceUsesFahrenheit(): boolean {
+    if (this.device.getDevice()) {
+      return this.device.getDevice()!.countryCode.startsWith('US')
+    } else {
+      return false
+    }
+  }
+
+  roundHalf(r: number): number {
+    return Math.round(r * 2) / 2
+  }
+
+  /* 
+  LG Air Conditioners use a lookup table to go between Celsius and Farenheit, which we request from the 
+  LG servers as part of the GetDashboard call. There are two tables, CelToFah and FahToCel, which are *not* 
+  inverses of each other (unfortunately). 
+
+  These tables are the same as the units use, so if you want your results to match what they physically display,
+  you need to use the lookup tables. 
+
+  HomeKit's API uses Celsius as its standard unit, regardless of whether the user sees Farenheit on the UI or not--that is,
+  conversion happens on the iPhone. 
+
+  Thus, to ensure the temperatures on the app and the unit match, we have to convert to Farenheit, 
+  then back to Celsius for HomeKit, the latter conversion using the classic (5/9) - 32 math. 
+
+  We do all this only if the user sees Farenheit, as I *think* this issue is moot if the units show celsius? A non-US user to confirm.
+  */
+  getHomeKitCelsiusForLGAPICelsius(_celsius: number): number {
+    if (!this.deviceUsesFahrenheit()) {
+      return _celsius
+    }
+
+    const LGCelsius = this.roundHalf(_celsius)
+    const LGCelsiusToF: Partial<Record<
+      string,
+      number
+    >> = this.device.getModelInfo().Value.TempCelToFah.value_mapping
+    const LGFarenheit = LGCelsiusToF[LGCelsius]
+
+    if (LGFarenheit === undefined) {
+      this.logError(
+        'getHomeKitCelsiusForLGAPICelsius input temperature ' +
+          _celsius +
+          ' was not found in LG mapping table',
+      )
+      return _celsius
+    }
+
+    const HKCelsius = this.roundHalf((LGFarenheit - 32) * (5 / 9))
+    this.logDebug(
+      'getHomeKitCelsiusForLGAPICelsius in=' + _celsius + ' out=' + HKCelsius,
+    )
+    return HKCelsius
+  }
+
+  // inverse of the above
+  getLGAPICelsiusForHomeKitCelsius(_celsius: number): number {
+    if (!this.deviceUsesFahrenheit()) {
+      return _celsius
+    }
+
+    const HKCelsiusInFarenheit: number = Math.round(_celsius * (9 / 5) + 32)
+    const LGCelsiusToF = this.device.getModelInfo().Value.TempCelToFah
+      .value_mapping
+
+    for (const LGCelsius in LGCelsiusToF) {
+      const LGFarenheit = LGCelsiusToF[LGCelsius]
+
+      if (LGFarenheit === HKCelsiusInFarenheit) {
+        this.logDebug(
+          'getLGAPICelsiusForHomeKitCelsius in=' +
+            _celsius +
+            ' out=' +
+            LGCelsius,
+        )
+
+        return Number(LGCelsius)
+      }
+    }
+
+    this.logError(
+      'Value ' + _celsius + " wasn't found in the LG mapping table.",
+    )
+    return _celsius
+  }
 }

src/characteristic/abstractSplitTemperatureThresholdCharacteristic.ts

@@ -1,6 +1,11 @@
-import type { Service, Characteristic } from 'homebridge'
+import type {
+  Service,
+  Characteristic,
+  CharacteristicValue,
+  CharacteristicSetCallback,
+} from 'homebridge'
 
-import type { GetDeviceResponse } from '../thinq/apiTypes'
+import { LgAirConditionerPlatformAccessory } from '../platformAccessory'
 import { HomebridgeLgThinqPlatform } from '../platform'
 import AbstractCharacteristic from './abstractCharacteristic'
 
@@ -10,6 +15,9 @@ type ApiValue = number /** temperature in celcius */
 
 type Mode = 'cool' | 'heat'
 
+const TEMPERATURE_MAX_VALUE_C = 30
+const TEMPERATURE_MIN_VALUE_C = 16
+
 /**
  * The air conditioner will report a single API "target temperature", while Homekit
  * supports a target temperature for both heat & cool simultaneously.
@@ -22,58 +30,46 @@ export default class AbstractSplithresholdCharacteristic extends AbstractCharact
   typeof Characteristic.CoolingThresholdTemperature
 > {
   mode: Mode
-  localPlatform: HomebridgeLgThinqPlatform
-  localService: Service
 
   constructor(
     platform: HomebridgeLgThinqPlatform,
     service: Service,
-    deviceId: string,
+    device: LgAirConditionerPlatformAccessory,
     mode: Mode,
   ) {
     super(
       platform,
       service,
-      deviceId,
+      device,
       mode === 'cool'
         ? platform.Characteristic.CoolingThresholdTemperature
         : platform.Characteristic.HeatingThresholdTemperature,
       'Set',
       'airState.tempState.target',
     )
+
     this.mode = mode
     service
       .getCharacteristic(this.characteristic)
       // min/max as defined in product manual
-      .setProps({ minValue: 16, maxValue: 30, minStep: 0.5 })
-    // Usually these would be private, but this is a special characteristic
-    // that needs these
-    this.localPlatform = platform
-    this.localService = service
+      .setProps({
+        minValue: TEMPERATURE_MIN_VALUE_C,
+        maxValue: TEMPERATURE_MAX_VALUE_C,
+        minStep: 0.5,
+      })
   }
 
-  // Override default handleUpdatedSnapshot() to ignore based on mode
-  handleUpdatedSnapshot(snapshot: GetDeviceResponse['result']['snapshot']) {
-    const targetState = this.localService.getCharacteristic(
-      this.localPlatform.Characteristic.TargetHeaterCoolerState,
-    ).value
-    const requiredState =
-      this.mode === 'cool'
-        ? this.localPlatform.Characteristic.TargetHeaterCoolerState.COOL
-        : this.localPlatform.Characteristic.TargetHeaterCoolerState.HEAT
-    if (targetState !== requiredState) {
-      this.logDebug(
-        `Target state is not "${this.mode}", ignoring snapshot update`,
-      )
+  handleSet?(value: CharacteristicValue, callback: CharacteristicSetCallback) {
+    if (super.handleSet) {
+      super.handleSet(value, callback)
     }
-    super.handleUpdatedSnapshot(snapshot)
   }
 
   getStateFromApiValue(apiValue: ApiValue): State {
-    return apiValue
+    return this.getHomeKitCelsiusForLGAPICelsius(apiValue)
   }
 
   getApiValueFromState(state: State): ApiValue {
-    return state
+    return this.getLGAPICelsiusForHomeKitCelsius(state)
   }
 }

src/characteristic/activeCharacteristic.ts

@@ -1,6 +1,8 @@
 import type { Service, Characteristic } from 'homebridge'
 
 import { HomebridgeLgThinqPlatform } from '../platform'
+import { LgAirConditionerPlatformAccessory } from '../platformAccessory'
+
 import AbstractCharacteristic from './abstractCharacteristic'
 
 type State =
@@ -17,12 +19,12 @@ export default class ActiveCharacteristic extends AbstractCharacteristic<
   constructor(
     platform: HomebridgeLgThinqPlatform,
     service: Service,
-    deviceId: string,
+    device: LgAirConditionerPlatformAccessory,
   ) {
     super(
       platform,
       service,
-      deviceId,
+      device,
       platform.Characteristic.Active,
       'Operation',
       'airState.operation',

src/characteristic/coolingThresholdTemperatureCharacteristic.ts

@@ -1,4 +1,5 @@
 import type { Service } from 'homebridge'
+import type { LgAirConditionerPlatformAccessory } from '../platformAccessory'
 
 import { HomebridgeLgThinqPlatform } from '../platform'
 import AbstractSplithresholdCharacteristic from './abstractSplitTemperatureThresholdCharacteristic'
@@ -7,8 +8,8 @@ export default class CoolingThresholdCharacteristic extends AbstractSplithreshol
   constructor(
     platform: HomebridgeLgThinqPlatform,
     service: Service,
-    deviceId: string,
+    device: LgAirConditionerPlatformAccessory,
   ) {
-    super(platform, service, deviceId, 'cool')
+    super(platform, service, device, 'cool')
   }
 }