{ pkgs, config, lib, inputs, ... }:

let
  nixservice = "home-assistant";
  service = "hass";
  cfg = config.modules.services.${service};
  sec = config.sops.secrets;
  homelab = config.modules.homelab;
in
{
  options.modules.services.${service} = {
    enable = lib.mkEnableOption "enables ${service}";

    # set port options
    port = lib.mkOption {
      type = lib.types.int;
      default = 7704;
      description = "set port for ${service} (default: ${toString cfg.port}";
    };
    url = lib.mkOption {
      type = lib.types.str;
      default = "${service}.${homelab.base_domain}";
      description = "set domain for ${service}";
    };
    data_dir = lib.mkOption {
      type = lib.types.str;
      default = "/var/lib/${service}";
      description = "set data directory for ${service}";
    };
    ids = lib.mkOption {
      type = lib.types.int;
      default = cfg.port;
      description = "set uid and pid of ${service} user (matches port by default)";
    };
    backup = lib.mkOption {
      type = lib.types.bool;
      default = true;
      description = "enable backups for ${service}";
    };
  };

  config = lib.mkIf cfg.enable {
    
    # declare ${service} group
    users.groups.${service} = { gid = lib.mkForce cfg.ids; };

    # declare ${service} user
    users.users.${service} = {
      description = "${service} server user";
      uid = lib.mkForce cfg.ids;
      isSystemUser = true;
      home = cfg.data_dir;
      createHome = true;
      group = service;
      extraGroups = [];
    };

# here lies my tough, and I mean fucking tough, swing at
# getting this to work bare metal, ggs ill see you again
# - didnt take long
# --------------------------------------------------------------------------------
    # enable the ${service} service
    services.${nixservice} = {
      enable = true;
      package = inputs.nixpkgs-unstable.legacyPackages.${pkgs.system}.home-assistant;
      extraComponents = [
        # required for onboarding
        "analytics"
        "google_translate"
        "met"
        "radio_browser"
        "shopping_list"
        "isal"
        "default_config"
        "mqtt"
      ];
      extraPackages = python3Packages: with python3Packages; [
        psycopg2
        universal-silabs-flasher
        getmac
        zha
        ha-silabs-firmware-client
        paho-mqtt
        aiomqtt
        aiounifi
      ];
      # imperative config
      config = null;
      lovelaceConfig = null;
      configDir = cfg.data_dir;
      # declartive poggers!
#      config = {
#        # Includes dependencies for a basic setup
#        default_config = {};
#      };
    };


    # override umask to make permissions work out
    systemd.services.${service}.serviceConfig = {
      UMask = lib.mkForce "0007";
    };

    # open firewall
    networking.firewall.allowedTCPPorts = [ cfg.port 8123 ];

    # internal reverse proxy entry
    services.nginx.virtualHosts."${cfg.url}" = {
      forceSSL = true;
      sslCertificate = sec."ssl_blakedheld_crt".path;
      sslCertificateKey = sec."ssl_blakedheld_key".path;
      extraConfig = ''
        proxy_buffering off;
      '';
      locations."/" = {
        proxyPass = "http://127.0.0.1:${toString cfg.port}";
        extraConfig = 
          "proxy_set_header Upgrade $http_upgrade;" + 
          "proxy_set_header Connection upgrade;"
        ;
      };
    };
     # external reverse proxy entry
     services.nginx.virtualHosts."${service}.blakedheld.xyz" = {
      forceSSL = true;
      sslCertificate = sec."ssl_blakedheld_crt".path;
      sslCertificateKey = sec."ssl_blakedheld_key".path;
      extraConfig = ''
        proxy_buffering off;
      '';
      locations."/" = {
        proxyPass = "http://127.0.0.1:${toString cfg.port}";
        extraConfig = 
          "proxy_set_header Upgrade $http_upgrade;" + 
          "proxy_set_header Connection upgrade;"
        ;
      };
    };

    # add to backups
    modules.system.backups.baks = {} // {
      "${service}" = { paths = [ cfg.data_dir ]; };
    };
  };
}






# still suss as fuck bro man fuck
#    virtualisation.oci-containers.containers = {
#      homeassistant = {
#        image = "homeassistant/home-assistant:stable";
#        autoStart = true;
#        extraOptions = [
#          "--pull=newer"
#        ];
#        volumes = [
#          "${cfg.data_dir}:/config"
#        ];
#        ports = [
#          "0.0.0.0:7704:8123"
#          "0.0.0.0:4141:4141"
#        ];
#        environment = {
#          TZ = homelab.tz;
#          PUID = toString config.users.users.${service}.uid;
#          PGID = toString config.users.groups.${service}.gid;
#        };
#      };
#    };