From ef1f7a69159bad6f7face2c8b907d190dfb1114e Mon Sep 17 00:00:00 2001
From: garc33 <garc33@gmail.com>
Date: Thu, 28 Dec 2017 15:00:08 +0100
Subject: [PATCH] Add invert state configuration

This option can be used to invert switch state. It is usefull in case of electric heater setup where open circuit is equal to an "on" state.
---
 README.md | 11 +++++++++--
 index.js  | 14 ++++++--------
 2 files changed, 15 insertions(+), 10 deletions(-)

diff --git a/README.md b/README.md
index 8288c01..e91ec37 100644
--- a/README.md
+++ b/README.md
@@ -21,19 +21,26 @@ Here's how to configure a set of switches :
         "accessory": "Chacon",
         "name": "Switch2",
         "deviceId": 2,
-        "emitterId": 12325261
+        "emitterId": 12325261,
+        "dimmable": true
     },
     {
         "accessory": "Chacon",
         "name": "Switch3",
         "deviceId": 3,
-        "emitterId": 12325261
+        "emitterId": 12325261,
+        "invert": "true"
     }
     ]
 
 Each accessory have a unique deviceId that is transmitted during the learning process, 
 the emitterId bounds a switch to that emitter, a switch can have multiple emitter associated (a remote control).
 
+Options :
+
+* dimmable : register the switch as dimmable lightbulb
+* invert : invert the state of switch (turn on -> off, turn off -> on), this configuration is used in case of electric heater setup (see: http://www.planete-domotique.com/blog/2012/01/05/piloter-un-radiateur-grace-a-son-fil-pilote/)
+
 ### Learning process
 The learning process is actually the same as described in the guide of the switch seller. A 'on' code has to be sent to the switch
 during the learning process initialization.
diff --git a/index.js b/index.js
index eadc357..526e4e0 100644
--- a/index.js
+++ b/index.js
@@ -14,6 +14,7 @@ function ChaconAccessory(log, config) {
   this.deviceId     = config['deviceId'];
   this.emitterId    = config['emitterId'];
   this.isDimmable   = config['dimmable'];
+  this.isInverted   = config['invert']
   if (noInitDone) {
     chaconEmitter.init();
     noInitDone = false;
@@ -23,7 +24,7 @@ function ChaconAccessory(log, config) {
 ChaconAccessory.prototype = {
   setPowerState: function(powerOn, callback) {
     var that = this;
-    var order = chaconEmitter.buildOrder(this.emitterId, this.deviceId, powerOn);
+    var order = chaconEmitter.buildOrder(this.emitterId, this.deviceId, this.isInverted == "true" ? !powerOn : powerOn);
     chaconEmitter.transmit(order);
     callback(null);
   },
@@ -38,16 +39,13 @@ ChaconAccessory.prototype = {
   getServices: function() {
     var switchService = new Service.Switch(this.name);
     var lightBulb = new Service.Lightbulb(this.name);
-    //var informationService = new Service.AccessoryInformation();
-
-    /* informationService
-      .setCharacteristic(Characteristic.Manufacturer, this.manufacturer)
-      .setCharacteristic(Characteristic.Model, this.model_name)
-      .setCharacteristic(Characteristic.SerialNumber, this.id);
-    */
+    
     switchService
       .getCharacteristic(Characteristic.On)
       .on('set', this.setPowerState.bind(this));
+    if(this.isInverted == "true") {
+      switchService.setCharacteristic(Characteristic.On, true)
+    }
     lightBulb
       .getCharacteristic(Characteristic.On)
       .on('set', this.setPowerState.bind(this));