{ lib, ... }:
let
  inherit (lib.my) net;
  inherit (lib.my.c) pubDomain;
  inherit (lib.my.c.home) domain prefixes vips hiMTU;
in
{
  nixos.systems.hass = { config, ... }: {
    system = "x86_64-linux";
    nixpkgs = "mine";
    rendered = config.configuration.config.my.asContainer;

    assignments = {
      hi = {
        name = "hass-ctr";
        altNames = [ "frigate" ];
        inherit domain;
        mtu = hiMTU;
        ipv4 = {
          address = net.cidr.host 103 prefixes.hi.v4;
          mask = 22;
          gateway = vips.hi.v4;
        };
        ipv6 = {
          iid = "::5:3";
          address = net.cidr.host (65536*5+3) prefixes.hi.v6;
        };
      };
      lo = {
        name = "hass-ctr-lo";
        inherit domain;
        mtu = 1500;
        ipv4 = {
          address = net.cidr.host 103 prefixes.lo.v4;
          mask = 21;
          gateway = null;
        };
        ipv6 = {
          iid = "::5:3";
          address = net.cidr.host (65536*5+3) prefixes.lo.v6;
        };
      };
    };

    configuration = { lib, config, pkgs, assignments, allAssignments, ... }:
    let
      inherit (lib) mkMerge mkIf mkForce;
      inherit (lib.my) networkdAssignment;

      hassCli = pkgs.writeShellScriptBin "hass-cli" ''
        export HASS_SERVER="http://localhost:${toString config.services.home-assistant.config.http.server_port}"
        export HASS_TOKEN="$(< ${config.age.secrets."hass/cli-token.txt".path})"
        exec ${pkgs.home-assistant-cli}/bin/hass-cli "$@"
      '';
    in
    {
      config = {
        my = {
          deploy.enable = false;
          server.enable = true;

          secrets = {
            key = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGpYX2WbYwUqHp8bFFf0eHFrqrR8xp8IheguA054F8V4";
            files = {
              "hass/cli-token.txt" = {
                owner = config.my.user.config.name;
              };
            };
          };

          firewall = {
            tcp.allowed = [ "http" 1883 ];
          };
        };

        environment = {
          systemPackages = with pkgs; [
            usbutils
            hassCli
          ];
        };

        systemd = {
          network.networks = {
            "80-container-host0" = networkdAssignment "host0" assignments.hi;
            "80-container-lan-lo" = networkdAssignment "lan-lo" assignments.lo;
          };
        };

        services = {
          mosquitto = {
            enable = true;
            listeners = [
              {
                omitPasswordAuth = true;
                settings = {
                  allow_anonymous = true;
                };
              }
            ];
          };

          go2rtc = {
            enable = true;
            settings = {
              streams = {
                reolink_living_room = [
                  # "http://reolink-living-room.${domain}/flv?port=1935&app=bcs&stream=channel0_main.bcs&user=admin#video=copy#audio=copy#audio=opus"
                  "rtsp://admin:@reolink-living-room:554/h264Preview_01_main"
                ];
              };
            };
          };

          frigate = {
            enable = true;
            hostname = "frigate.${domain}";
            settings = {
              mqtt = {
                enabled = true;
                host = "localhost";
                topic_prefix = "frigate";
              };

              cameras = {
                reolink_living_room = {
                  ffmpeg.inputs = [
                    {
                      path = "rtsp://127.0.0.1:8554/reolink_living_room";
                      input_args = "preset-rtsp-restream";
                      roles = [ "record" "detect" ];
                    }
                  ];
                  detect = {
                    enabled = false;
                  };
                  record = {
                    enabled = true;
                    retain.days = 1;
                  };
                };
              };
            };
          };

          home-assistant =
          let
            cfg = config.services.home-assistant;

            pyirishrail = ps: ps.buildPythonPackage rec {
              pname = "pyirishrail";
              version = "0.0.2";
              src = pkgs.fetchFromGitHub {
                owner = "ttroy50";
                repo = "pyirishrail";
                tag = version;
                hash = "sha256-NgARqhcXP0lgGpgBRiNtQaSn9JcRNtCcZPljcL7t3Xc=";
              };

              dependencies = with ps; [
                requests
              ];
            };
          in
          {
            enable = true;

            extraComponents = [
              "default_config"
              "esphome"
              "google_translate"

              "met"
              "zha"
              "denonavr"
              "webostv"
              "androidtv_remote"
              "heos"
              "mqtt"
            ];
            extraPackages = python3Packages: with python3Packages; [
              zlib-ng
              isal

              gtts
              (pyirishrail python3Packages)
            ];
            customComponents = with pkgs.home-assistant-custom-components; [
              alarmo
              frigate
            ];

            configWritable = false;
            openFirewall = true;
            config = {
              default_config = {};
              homeassistant = {
                name = "Home";
                unit_system = "metric";
                currency = "EUR";
                country = "IE";
                time_zone = "Europe/Dublin";
                external_url = "https://hass.${pubDomain}";
                internal_url = "http://hass-ctr.${domain}:${toString cfg.config.http.server_port}";
              };
              http = {
                use_x_forwarded_for = true;
                trusted_proxies = with allAssignments.middleman.internal; [
                  ipv4.address
                  ipv6.address
                ];
                ip_ban_enabled = false;
              };
              automation = "!include automations.yaml";
              script = "!include scripts.yaml";
              scene = "!include scenes.yaml";

              sensor = [
                {
                  platform = "irish_rail_transport";
                  name = "To Work from Home";
                  station = "Glenageary";
                  stops_at = "Dublin Connolly";
                  direction = "Northbound";
                }
                {
                  platform = "irish_rail_transport";
                  name = "To Home from Work";
                  station = "Dublin Connolly";
                  stops_at = "Glenageary";
                  direction = "Southbound";
                }
              ];
            };
          };
        };
      };
    };
  };
}