feat(hass): use binary sensors when notifications has only two states

lib/Gateway.js

@@ -643,6 +643,33 @@ function getMappedStateTemplate (state, defaultValueKey) {
   return `{{ {${map.join(',')}}[value_json.value] | default(${defaultValue}) }}`
 }
 
+/**
+ * Converts an States Array of maps to map
+ *
+ * @param {array} states States Array of Maps
+ */
+function getMapFromArrayOfStates (states) {
+  const map = new Map()
+  for (const listKey in states) {
+    map.set(states[listKey].value, states[listKey].text)
+  }
+
+  return map
+}
+function getBinaryPayloadFromSensor (cfg, devicePayload, off = 0) {
+  const stateKeys = Array.from(
+    getMapFromArrayOfStates(devicePayload.states).keys()
+  )
+  // Set on/off state from keys
+  if (stateKeys[0] === off) {
+    cfg.discovery_payload.payload_off = stateKeys[0]
+    cfg.discovery_payload.payload_on = stateKeys[1]
+  } else {
+    cfg.discovery_payload.payload_off = stateKeys[1]
+    cfg.discovery_payload.payload_on = stateKeys[0]
+  }
+  return cfg
+}
 /**
  * Retrives the value of a property from the node valueId
  *
@@ -1610,6 +1637,36 @@ Gateway.prototype.discoverValue = function (node, vId) {
         if (cmdClass === CommandClasses.Basic && valueId.property !== 'event') {
           return
         }
+
+        // Try to define Binary sensor
+        if (valueId.hasOwnProperty('states')) {
+          if (valueId.states.length === 2) {
+            let off = 0 // set default off to 0
+            cfg = copy(hassCfg.binary_sensor_contact)
+            switch (valueId.propertyKeyName) {
+              case 'Motion sensor status':
+                cfg.discovery_payload.device_class = 'motion'
+                break
+              case 'Cover status':
+                cfg.discovery_payload.device_class = 'opening'
+                break
+              case 'Water Alarm':
+                cfg.discovery_payload.device_class = 'moisture'
+                break
+              case 'Access Control':
+                cfg.discovery_payload.device_class = 'lock'
+                off = 23
+                break
+              case 'Door state':
+                cfg.discovery_payload.device_class = 'door'
+                off = 1
+                break
+            }
+            cfg = getBinaryPayloadFromSensor(cfg, valueId, off)
+            cfg.object_id = valueId.propertyKey
+          }
+          break
+        }
         // https://github.com/zwave-js/node-zwave-js/blob/master/packages/zwave-js/src/lib/commandclass/NotificationCC.ts
         // https://github.com/zwave-js/node-zwave-js/blob/master/packages/config/config/notifications.json
         cfg = copy(hassCfg.sensor_generic)
@@ -1618,7 +1675,6 @@ Gateway.prototype.discoverValue = function (node, vId) {
           valueId.property,
           valueId.propertyKey
         )
-
         // TODO: Improve the icons for different propertyKeys!
         switch (valueId.propertyKey) {
           case 'Motion sensor status':