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

let
  hostName = config.networking.hostName;
  ifDesktop = val:
    if (__any (x: x == hostName) [ "jmdesk" "jmlap" ]) then val else empty val;
  ifHost = host: val:
    if hostName == host then val else empty val;
  empty = val:
    if __isList val then [] else if __isAttrs val then {} else false;
  dirhome = config.users.extraUsers.joelmo.home;
  dirdocuments = "${dirhome}/Documents";
in {

  imports = [
      <nixpkgs/nixos/modules/installer/scan/not-detected.nix>
      /home/joelmo/Documents/musnix
  ];

  config = {

    boot = {
      kernelParams = [ "elevator=noop" ];
      tmpOnTmpfs = true;
    };

    environment = {
      etc."nixos/configuration.nix".source = "/home/joelmo/.nixpkgs/${hostName}.nix";
      systemPackages = with pkgs; [ fuse fuse_exfat ];
    };

    nix = {
      maxJobs = 4;
      readOnlyStore = false;
      requireSignedBinaryCaches = false;
      # useChroot = true;
      # sshServe.enable = true;
      # sshServe.keys = [ (__readFile ${dirdocuments}/configurations/jmlap_id_rsa.pub) ];
    };

    i18n.consoleKeyMap = "uk";

    nixpkgs.config.allowUnfree = true;

    hardware = {
      cpu.intel.updateMicrocode = true;
      enableAllFirmware = true;
    } // ifDesktop {
      pulseaudio.enable = true;
      pulseaudio.package = pkgs.pulseaudioFull;
      opengl.driSupport32Bit = true;
      opengl.extraPackages = with pkgs; [ vaapiIntel ];
    };

    musnix.enable = ifDesktop true;

    networking = {
      firewall.enable = false;
      networkmanager.enable = ifDesktop true;
    };

    powerManagement.enable = true;

    services = {
      avahi.enable = true;
      avahi.nssmdns = true;
      avahi.browseDomains = [];
      avahi.publish.addresses = true;
      avahi.publish.enable = true;
      openssh.enable = true;
    } // ifDesktop {
      acpid.enable = true;
      locate.enable = true;
      locate.includeStore = true;
      locate.localuser = "root";
      upower.enable = true;
      printing.enable = true;
      # virtualboxHost.enable = true;
      xserver = {
        displayManager.sddm.enable = true;
        desktopManager.kde5.enable = true;
        useGlamor = true;
        enable = true;
        layout = "gb,se";
      };
    };

    sound.enableOSSEmulation = false;

    time.timeZone = "Europe/Stockholm";

    users.extraUsers.joelmo = {
      extraGroups = [ "wheel" ] ++ ifDesktop [ "networkmanager" "audio" ];
      isNormalUser = true;
      password = "zxc";
      uid = 1000;
    };

    users.extraUsers.demo = {
      isNormalUser = true;
      extraGroups = [ "networkmanager" ];
      password = "demo";
    };

    systemd.user.services.ipython =
    with pkgs;
    with python27Packages; {
      wantedBy = [ "default.target" ];
      path = [ bash openssh notebook ipython "/home/joelmo/.nix-profile" ];
      environment = let suffix = python27.sitePackages; in {
        PYTHONPATH = "/home/joelmo/.nix-profile/${suffix}"
          + ":/home/joelmo/.local/${suffix}";
        SSH_AUTH_SOCK = "/run/user/1000/ssh-agent";
        };
      serviceConfig = {
        ExecStart = "${pkgs.python27Packages.notebook}/bin/jupyter-notebook ${dirdocuments}";
        CPUSchedulingPolicy = "batch";
      };
    };

    systemd.user.services.syncthing = {
      wantedBy = [ "default.target" ];
      path = [ pkgs.syncthing ];
      environment = {
        STNOUPGRADE = "yes";
        STNORESTART = "yes";
      };
      serviceConfig = {
        ExecStart = "${pkgs.syncthing}/bin/syncthing -home ${dirhome}/.config/syncthing -logflags=0 -no-browser";
        CPUSchedulingPolicy = "batch";
        IOSchedulingClass = "idle";
        PermissionsStartOnly = true;
        Restart = "on-failure";
        SuccessExitStatus = "2 3 4";
        RestartForceExitStatus="3 4";
      };
    };

    systemd.user.services.news = {
      path = with pkgs; [ rawdog ];
      serviceConfig = {
        ExecStart = "/home/joelmo/bin/news.sh";
        CPUSchedulingPolicy = "batch";
      };
    };

    systemd.user.services.backup = {
      path = with pkgs; [ duplicity megatools ];
      serviceConfig = {
        ExecStart = "/home/joelmo/bin/backup.sh";
      };
    };

    systemd.user.timers = ifHost "jmdesk" {
      backup = {
        wantedBy = [ "default.target" ];
        timerConfig = {
          OnCalendar = "*-*-* 22:00:00";
          Persistent = "true";
          WakeSystem = "true";
        };
      };

      news = {
        wantedBy = [ "default.target" ];
        timerConfig = {
          OnCalendar = "*-*-* 18:00:00";
          Persistent = "true";
          WakeSystem = "true";
        };
      };
    };
  };
}