From 7327533b2420f1457547341c92881c756cfacf47 Mon Sep 17 00:00:00 2001
From: Nicu Hodos <nicu@hodos.ro>
Date: Mon, 7 Oct 2024 22:06:26 +0200
Subject: [PATCH] detect a multi value sensor based on common id

---
 src/ha.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/ha.h b/src/ha.h
index c9a99c4..37ec441 100644
--- a/src/ha.h
+++ b/src/ha.h
@@ -93,6 +93,7 @@ namespace Ha {
         JsonPairs<const char*> jsonStrings;
         DeviceConfig* mainDevice = nullptr;
         static List<Component> components;
+        bool multiValueComponent = false;
 
         Component(const char* name, const char* id, const char* type) : name(name), id((char*)id), type(type) {
             components.add(this);
@@ -213,6 +214,7 @@ namespace Ha {
 
         Builder& addSecondary(Component* c) {
             if (cmp->mainDevice) c->mainDevice = &DeviceConfig::create(cmp->mainDevice->id).withName(cmp->mainDevice->name);
+            if (!strcmp(cmp->id, c->id)) c->multiValueComponent = true;
             return *this;
         }
 
@@ -354,7 +356,7 @@ namespace Ha {
         }
 
         void buildUniqueId(char* uniqueId) override {
-            if (deviceClass) {
+            if (multiValueComponent && deviceClass) {
                 sprintf(uniqueId, "%s_%s_%s", MAIN_DEVICE_ID, deviceClass, id);
             } else {
                 Component::buildUniqueId(uniqueId);
@@ -362,7 +364,7 @@ namespace Ha {
         }
 
         void buildConfigTopic() override {
-            if (deviceClass) {
+            if (multiValueComponent && deviceClass) {
                 sprintf(configTopic, "homeassistant/%s/%s/%s_%s/config", type, MAIN_DEVICE_ID, deviceClass, id);
             } else {
                 Component::buildConfigTopic();