{
  lib,
  config,
  pkgs,
  ...
}:
with lib; let
  haCfg = config.pub-solar.home-assistant;
  cfg = config.pub-solar.home-assistant.zigbee2mqtt;
in {
  config = mkIf (haCfg.enable && cfg.enable) {
    networking.firewall.allowedTCPPorts = [
      8081 # zigbee2mqtt
    ];

    services.zigbee2mqtt = {
      enable = true;
      settings = {
        frontend = {
          port = 8081;
        };
        permit_join = false;
        homeassistant = true;
        availability = true;
        advanced = {
          legacy_availability_payload = false;
        };
        mqtt = {
          user = "z2m";
          password = "!secrets.yaml mqtt_password";
        };
        serial = {
          port = cfg.device;
          adapter = mkIf (cfg.adapter != null) cfg.adapter;
        };
        groups = "groups.yaml";
      };
    };
  };
}