Implement Zeroconf auto-discovery

Untested since I'm not able to access the network

custom_components/vinx/config_flow.py

@@ -1,13 +1,18 @@
+import logging
+
 from typing import Any
 
 import voluptuous as vol
 
+from homeassistant.components.zeroconf import ZeroconfServiceInfo
 from homeassistant.config_entries import ConfigFlow, ConfigFlowResult
 from homeassistant.helpers.device_registry import format_mac
 
 from .const import CONF_HOST, CONF_PORT, DOMAIN
 from .lw3 import LW3
 
+_LOGGER = logging.getLogger(__name__)
+
 
 class VinxConfigFlow(ConfigFlow, domain=DOMAIN):
     VERSION = 1
@@ -52,3 +57,18 @@ async def async_step_user(self, user_input: dict[str, Any] | None = None) -> Con
                 return self.async_create_entry(title=title, data=user_input)
 
         return self.async_show_form(step_id="user", data_schema=self.schema, errors=errors)
+
+    async def async_step_zeroconf(self, discovery_info: ZeroconfServiceInfo) -> ConfigFlowResult:
+        _LOGGER.info(f"Zeroconf discovery info: {discovery_info}")
+
+        # Abort if the device is already configured
+        unique_id = format_mac(discovery_info.properties.get("mac"))
+        await self.async_set_unique_id(unique_id)
+        self._abort_if_unique_id_configured()
+
+        # Pre-populate the form
+        self.host = discovery_info.ip_address
+        self.port = discovery_info.port
+
+        # Trigger the user configuration flow
+        return await self.async_step_user()

custom_components/vinx/manifest.json

@@ -13,5 +13,5 @@
   "iot_class": "local_polling",
   "requirements": [],
   "ssdp": [],
-  "zeroconf": []
+  "zeroconf": ["_lwr3._tcp.local."]
 }