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

let
  service = "immich";
  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 = 7702;
      description = "set port for ${service} (default: ${toString cfg.port}";
    };
    url = lib.mkOption {
      type = lib.types.str;
      default = "photos.${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 = [ "video" "render" ];
    };

    # enable the ${service} service
    services.${service} = {
      enable = true;
      package = inputs.nixpkgs-unstable.legacyPackages.${pkgs.system}.immich;
      openFirewall = true;
      user = "${service}";
      group = "${service}";
      mediaLocation = cfg.data_dir;
      host = "0.0.0.0";
      port = cfg.port;
      settings.server.externalDomain = "https://pics.blakedheld.xyz";
    };

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

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

    # internal reverse proxy entry
    services.nginx.virtualHosts."${cfg.url}" = {
      forceSSL = true;
      sslCertificate = sec."ssl_blakedheld_crt".path;
      sslCertificateKey = sec."ssl_blakedheld_key".path;
      locations."/" = {
        proxyPass = "http://127.0.0.1:${toString cfg.port}";
        proxyWebsockets = true;
      };
    };
     # external reverse proxy entry
     services.nginx.virtualHosts."photos.blakedheld.xyz" = {
      forceSSL = true;
      sslCertificate = sec."ssl_blakedheld_crt".path;
      sslCertificateKey = sec."ssl_blakedheld_key".path;
      locations."/" = {
        proxyPass = "http://127.0.0.1:${toString cfg.port}";
        proxyWebsockets = true;
      };
    };

    # add to caddy for reverse proxy
    services.caddy.virtualHosts."${cfg.url}" = {
      extraConfig = ''
        tls ${sec."ssl_blakedheld_crt".path} ${sec."ssl_blakedheld_key".path}
        reverse_proxy http://127.0.0.1:${toString cfg.port}
      '';
    };

    # add to glance
    modules.services.glance.links.services = [{
      title = service;
      url = "https://photos.${homelab.public_domain}";
      error-url = "http://${homelab.host_ip}:${toString cfg.port}";
      check-url = "http://${homelab.host_ip}:${toString cfg.port}";
      icon = "di:${service}"; }];

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