[DISC] make mi scale weighing_mode and unit enum (#1766)

* make mi scale weighing_mode and unit enum

* lint

main/ZgatewayBT.ino

@@ -1108,6 +1108,24 @@ void launchBTDiscovery(bool overrideDiscovery) {
                               Gateway_AnnouncementMsg, will_Message, false, subjectMQTTtoBTset,
                               model.c_str(), brand.c_str(), model_id.c_str(), macWOdots.c_str(), false,
                               stateClassNone, "off", "on");
+            } else if ((p->sensorModel_id == TheengsDecoder::XMTZC04HM || p->sensorModel_id == TheengsDecoder::XMTZC05HM) &&
+                       strcmp(prop.key().c_str(), "weighing_mode") == 0) {
+              createDiscovery("sensor",
+                              discovery_topic.c_str(), entity_name.c_str(), unique_id.c_str(),
+                              will_Topic, "enum", value_template.c_str(),
+                              "", "", prop.value()["unit"],
+                              0, "", "", false, "",
+                              model.c_str(), brand.c_str(), model_id.c_str(), macWOdots.c_str(), false,
+                              stateClassMeasurement, nullptr, nullptr, "[\"person\",\"object\"]");
+            } else if ((p->sensorModel_id == TheengsDecoder::XMTZC04HM || p->sensorModel_id == TheengsDecoder::XMTZC05HM) &&
+                       strcmp(prop.key().c_str(), "unit") == 0) {
+              createDiscovery("sensor",
+                              discovery_topic.c_str(), entity_name.c_str(), unique_id.c_str(),
+                              will_Topic, "enum", value_template.c_str(),
+                              "", "", prop.value()["unit"],
+                              0, "", "", false, "",
+                              model.c_str(), brand.c_str(), model_id.c_str(), macWOdots.c_str(), false,
+                              stateClassMeasurement, nullptr, nullptr, "[\"lb\",\"kg\",\"jin\"]");
             } else if (strcmp(prop.key().c_str(), "device") != 0 || strcmp(prop.key().c_str(), "mac") != 0) { // Exception on device and mac as these ones are not sensors
               createDiscovery("sensor",
                               discovery_topic.c_str(), entity_name.c_str(), unique_id.c_str(),

main/ZmqttDiscovery.ino

@@ -239,7 +239,7 @@ void createDiscovery(const char* sensor_type,
                      int off_delay,
                      const char* payload_available, const char* payload_not_available, bool gateway_entity, const char* cmd_topic,
                      const char* device_name, const char* device_manufacturer, const char* device_model, const char* device_id, bool retainCmd,
-                     const char* state_class, const char* state_off, const char* state_on) {
+                     const char* state_class, const char* state_off, const char* state_on, const char* enum_options) {
   StaticJsonDocument<JSON_MSG_BUFFER> jsonBuffer;
   JsonObject sensor = jsonBuffer.to<JsonObject>();
 
@@ -344,6 +344,10 @@ void createDiscovery(const char* sensor_type,
     sensor["cmd_t"] = command_topic; //command_topic
   }
 
+  if (enum_options != nullptr) {
+    sensor["options"] = enum_options;
+  }
+
   StaticJsonDocument<JSON_MSG_BUFFER> jsonDeviceBuffer;
   JsonObject device = jsonDeviceBuffer.to<JsonObject>();
   JsonArray identifiers = device.createNestedArray("ids");

main/config_mqttDiscovery.h

@@ -88,7 +88,7 @@ extern void createDiscovery(const char* sensor_type,
                             int off_delay,
                             const char* payload_available, const char* payload_not_available, bool gateway_entity, const char* command_topic,
                             const char* device_name, const char* device_manufacturer, const char* device_model, const char* device_mac, bool retainCmd,
-                            const char* state_class, const char* state_off = nullptr, const char* state_on = nullptr);
+                            const char* state_class, const char* state_off = nullptr, const char* state_on = nullptr, const char* enum_options = nullptr);
 
 /**
  * @brief Create a message for Discovery Device Trigger. For HA @see https://www.home-assistant.io/integrations/device_trigger.mqtt/
@@ -196,7 +196,8 @@ const char* availableHASSClasses[] = {"battery",
                                       "current",
                                       "energy",
                                       "power_factor",
-                                      "voltage"};
+                                      "voltage",
+                                      "enum"};
 
 // From https://github.com/home-assistant/core/blob/d7ac4bd65379e11461c7ce0893d3533d8d8b8cbf/homeassistant/const.py#L379
 // List of units available in Home Assistant