{ config, pkgs, lib, ... }:
let
  cfg = config.services.meshcentral;
  configFormat = pkgs.formats.json {};
  configFile = configFormat.generate "meshcentral-config.json" cfg.settings;
in with lib; {
  options.services.meshcentral = with types; {
    enable = mkEnableOption "MeshCentral computer management server";
    package = mkOption {
      description = lib.mdDoc "MeshCentral package to use. Replacing this may be necessary to add dependencies for extra functionality.";
      type = types.package;
      default = pkgs.meshcentral;
      defaultText = literalExpression "pkgs.meshcentral";
    };
    settings = mkOption {
      description = ''
        Settings for MeshCentral. Refer to upstream documentation for details:

        <itemizedlist>
          <listitem><para><link xlink:href="https://github.com/Ylianst/MeshCentral/blob/master/meshcentral-config-schema.json">JSON Schema definition</link></para></listitem>
          <listitem><para><link xlink:href="https://github.com/Ylianst/MeshCentral/blob/master/sample-config.json">simple sample configuration</link></para></listitem>
          <listitem><para><link xlink:href="https://github.com/Ylianst/MeshCentral/blob/master/sample-config-advanced.json">complex sample configuration</link></para></listitem>
          <listitem><para><link xlink:href="https://www.meshcommander.com/meshcentral2">Old homepage) with documentation link</link></para></listitem>
        </itemizedlist>
      '';
      type = types.submodule {
        freeformType = configFormat.type;
      };
      example = {
        settings = {
          WANonly = true;
          Cert = "meshcentral.example.com";
          TlsOffload = "10.0.0.2,fd42::2";
          Port = 4430;
        };
        domains."".certUrl = "https://meshcentral.example.com/";
      };
    };
  };
  config = mkIf cfg.enable {
    services.meshcentral.settings.settings.autoBackup.backupPath = lib.mkDefault "/var/lib/meshcentral/backups";
    systemd.services.meshcentral = {
      wantedBy = ["multi-user.target"];
      serviceConfig = {
        ExecStart = "${cfg.package}/bin/meshcentral --datapath /var/lib/meshcentral --configfile ${configFile}";
        DynamicUser = true;
        StateDirectory = "meshcentral";
        CacheDirectory = "meshcentral";
      };
    };
  };
  meta.maintainers = [ maintainers.lheckemann ];
}