update light icon based on status

modules/desktop-environments/hyprland/config/waybar/default.nix

@@ -86,8 +86,11 @@ in
 
         "custom/lights" = {
           tooltip = false;
-          format = "󱉓";
+          exec = "waybar-hass --get_light light.living_room_lights";
+          interval = "once";
+          format = "{text}";#"󱉓";
           on-click = "waybar-hass --toggle_light light.living_room_lights";
+          return-type = "json";
         };
 
         temperature = {

modules/desktop-environments/hyprland/config/waybar/scripts/hass.nix

@@ -42,25 +42,37 @@ let
 
   waybar-hass = pkgs.writeScriptBin "waybar-hass" ''
     #!${pythonEnv}/bin/python
-    
+    """run with the special python"""
-    import os
+
     import argparse
     import time
-    from homeassistant_api import Client
+    import json
+    from homeassistant_api import WebsocketClient
 
-    hass_url = 'http://homeassistant.local:8123/api'
+    HASS_URL = 'ws://homeassistant.local:8123/api/websocket'
 
     parser = argparse.ArgumentParser(prog='hass python wrapper')
     parser.add_argument('--toggle_light')
+    parser.add_argument('--get_light')
     args = parser.parse_args()
 
-    def loadKey():
+    def load_key():
+        """Read the api key"""
         token_path = "/run/secrets/desktop/hass_token"
         with open(token_path, "r") as key_file:
             key = key_file.readline()
         return key
 
+    def get_light_state(client, light):
+        """Get light status"""
+        light_entity = client.get_entity(entity_id=light)
+        state = light_entity.get_state()
+        if state.state == 'on':
+            return "󰛨"
+        return "󰹏"
+
     def toggle_light(client, light):
+        """Toggle light status"""
         lights = client.get_domain("light")
         lights.toggle(entity_id=light)
         time.sleep(0.5)
@@ -68,19 +80,25 @@ let
         state = light_entity.get_state()
         if state.state == 'on':
             return "󰛨"
-        else:
+        return "󰹏"
-            return "󰹏"
 
     def main():
-        token = loadKey()
+        """Main"""
+        token = load_key()
+        status = "err"
 
-        with Client(hass_url, token) as client:
+        with WebsocketClient(HASS_URL, token) as client:
+            # toggle a light
             if args.toggle_light is not None:
                 status = toggle_light(client=client, light=args.toggle_light)
-        
+            # get the current light status
-        print("{ text: \"" + status + "\" }")
+            if args.get_light is not None:
+                status = get_light_state(client=client, light=args.get_light)
+
+        print(json.dumps({ "text": status }))
 
     main()
+
   '';
 in
 {