Define teslafi config schema

custom_components/teslafi/__init__.py

@@ -2,10 +2,13 @@
 
 from __future__ import annotations
 
+import voluptuous as vol
+
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import CONF_API_KEY, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import device_registry as dr
+import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.device_registry import DeviceEntry
 from homeassistant.helpers.httpx_client import create_async_httpx_client
 from homeassistant.helpers.typing import ConfigType
@@ -29,6 +32,16 @@
     Platform.UPDATE,
 ]
 
+CONFIG_SCHEMA = vol.Schema(
+    {
+        DOMAIN: vol.Schema(
+            {
+                vol.Required(CONF_API_KEY): cv.string,
+            }
+        )
+    }
+)
+
 
 async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
     """Set up the integration."""