Refactor how alarm state is manipulated, to use the proper endpoints that...

Refactor how alarm state is manipulated, to use the proper endpoints that actually change SHM, not just its representation within HA.

index.js

@@ -21,25 +21,25 @@ Object.keys( config.buttons ).forEach( function( index ) {
     button.on( 'detected', buttonActivated );
 } );
 
-var homeAssistantUrl      = config.home_assistant_proto + '://' + config.home_assistant_host + ':' + config.home_assistant_port + '/api/';
-var homeAssistantAlarmApi = homeAssistantUrl + 'states/' + config.home_assistant_alarm_entity_id;
+var homeAssistantUrl = config.home_assistant_proto + '://' + config.home_assistant_host + ':' + config.home_assistant_port + '/api/';
 
 /**
  * BUTTON FUNCTIONALITY
  */
 
 /**
- *
+ * Make HTTP(s) requests to Home Assistant to change SHM's status
  */
 function buttonActivated( mac ) {
     var req = {
-        url: homeAssistantAlarmApi,
+        url: homeAssistantUrl + 'states/' + config.home_assistant_alarm_entity_id,
         headers: {
             "Content-Type": "application/json",
             "x-ha-access": config.home_assistant_pass
         }
     };
 
+    // First, check the current status so we can toggle
     request( req, function( err, res, body ) {
         // Handle error states
         if ( err ) {
@@ -52,20 +52,24 @@ function buttonActivated( mac ) {
             return;
         }
 
+        // HA only deals with JSON
         body = JSON.parse( body );
 
-        // Identify new state based on current state
-        var stateUpdate = {};
+        // Identify service URL based on current state
+        var serviceBase = 'services/alarm_control_panel/';
 
         if ( 'disarmed' === body.state ) {
-            stateUpdate.state = 'armed_home';
+            req.url = homeAssistantUrl + serviceBase + 'alarm_arm_home';
+        } else if ( 'armed_home' === body.state ) {
+            req.url = homeAssistantUrl + serviceBase + 'alarm_disarm';
         } else {
-            stateUpdate.state = 'disarmed';
+            console.error( 'Invalid request based on current SHM status' );
+            return;
         }
 
         // Build new request to update state
         req.method = 'POST';
-        req.body   = JSON.stringify( stateUpdate );
+        req.body   = JSON.stringify( { "entity_id": config.home_assistant_alarm_entity_id } );
 
         request( req, function( err, res, body ) {
             // Handle error states
@@ -79,10 +83,9 @@ function buttonActivated( mac ) {
                 return;
             }
 
-            body = JSON.parse( body );
-
-            // Output new state to console, just for fun
-            console.log( body.state );
+            // Nothing more to do
+            // services endpoints don't return anything useful
+            return true;
         } );
     } );
 }