Add state toggling for switch

README.md

@@ -36,7 +36,7 @@ For occupancy sensors the value for `NEWSTATE` is either `true` for occupancy de
 For smoke sensors the value for `NEWSTATE` is either `true` for smoke detection or `false` for no smoke.
 
 ## Switch
-For switches the value for `NEWSTATE` is either `true` for on or `false` for off.
+For switches the value for `NEWSTATE` is either `true` for on or `false` for off. Alternatively use the value `toggle` to make the switch to into its other state.  
 
 ## Push button
 For push buttons the value for `NEWSTATE` is `true`. The button will be released automatically.

src/homekit/accessories/HttpWebHookSwitchAccessory.js

@@ -46,6 +46,9 @@ HttpWebHookSwitchAccessory.prototype.changeFromServer = function(urlParams) {
   else {
     var state = urlParams.state;
     var stateBool = state === "true";
+    if (urlParams.state === "toggle") {
+      stateBool = !cachedState
+    }
     this.storage.setItemSync("http-webhook-" + this.id, stateBool);
     // this.log("[INFO Http WebHook Server] State change of '%s'
     // to '%s'.",accessory.id,stateBool);