{ config, pkgs, ... }:

{
  imports =
    [
      ./common-headless.nix
    ];

  boot.supportedFilesystems = ["zfs"];
  boot.loader.grub = {
    enable = true;
    version = 2;
    zfsSupport = true;
    mirroredBoots = [
      { devices = [ "/dev/sda" ]; path = "/boota"; }
      { devices = [ "/dev/sdb" ]; path = "/bootb"; }
      { devices = [ "/dev/sdc" ]; path = "/bootc"; }
      { devices = [ "/dev/sdd" ]; path = "/bootd"; }
      { devices = [ "/dev/sde" ]; path = "/boote"; }
      { devices = [ "/dev/sdf" ]; path = "/bootf"; }
    ];
  };

  networking = {
    hostName = "aplysia";
    hostId = "34a820f1";
  };

  users.extraUsers.gebner.extraGroups = ["transmission"];

  boot.kernelPackages = pkgs.lib.mkOverride 10 pkgs.linuxPackages;

  system.stateVersion = "17.03";

  fileSystems."/mnt/aplysia" = pkgs.lib.mkOverride 10 {
    device = "aplysia/export";
    fsType = "zfs";
  };

  fileSystems."/boota".options = [ "nofail" ];
  fileSystems."/bootb".options = [ "nofail" ];
  fileSystems."/bootc".options = [ "nofail" ];
  fileSystems."/bootd".options = [ "nofail" ];
  fileSystems."/boote".options = [ "nofail" ];
  fileSystems."/bootf".options = [ "nofail" ];

  services.samba = {
    enable = true;
    extraConfig = ''
      passdb backend = tdbsam
      unix password sync = no
    '';
    shares = {
      export = {
        "guest ok" = "no";
        "read only" = "no";
        path = "/mnt/aplysia";
      };
    };
  };

  services.transmission = {
    # enable = true;
    settings = {
      download-dir = "/mnt/aplysia/torrents";
      incomplete-dir = "/mnt/aplysia/torrents";

      speed-limit-down = 5000;
      speed-limit-down-enabled = true;
      speed-limit-up = 800;
      speed-limit-up-enabled = true;

      peer-port = 51415;
    };
  };

  networking.firewall = {
    allowedTCPPorts = [
      445 139 # samba
      config.services.transmission.settings.peer-port
    ];
    allowedUDPPorts = [
      137 138 # samba
    ];
  };

  environment.systemPackages = with pkgs; [
    transmission
    samba
  ];

  # hdd spindown
  powerManagement.powerUpCommands = ''
    ${pkgs.hdparm}/bin/hdparm -B127 -S100 /dev/sd{a,b,c,d,e,f}
  '';

}