{ pkgs, lib, config, ... }:
let
  inherit (config.services) transmission;
  inherit (config.users) users;
  inherit (config.security) gnupg;
in
{
users.groups.transmission.members = [
  users."julm".name
];
networking.nftables.ruleset = ''
  add rule inet filter net2fw tcp dport ${toString transmission.settings.peer-port} counter accept comment "Transmission"
  add rule inet filter net2fw udp dport ${toString transmission.settings.peer-port} counter accept comment "Transmission"
  add rule inet filter fw2net meta skuid ${transmission.user}                       counter accept comment "Transmission"
'';
security.gnupg.secrets."transmission/settings.json" = {};
systemd.services.transmission = {
  after = [ gnupg.secrets."transmission/settings.json".service ];
  requires = [ gnupg.secrets."transmission/settings.json".service ];
};
services.transmission = {
  enable = true;
  credentialsFile = gnupg.secrets."transmission/settings.json".path;
  settings = {
    message-level = 3;
    download-dir = "Downloads";
    incomplete-dir-enabled = false;
    trash-original-torrent-files = false;
    preallocation = 0;
    umask = 63;
    
    peer-port = 6882;
    peer-port-random-on-start = false;
    encryption = 1;
    dht-enabled = true;
    lpd-enabled = false;
    pex-enabled = true;
    port-forwarding-enabled = true;
    scrape-paused-torrents-enabled = false;
    peer-socket-tos = "lowcost";
    queue-stalled-enabled = true;
    queue-stalled-minutes = 30;

    speed-limit-up = 500;
    speed-limit-up-enabled = true;
    alt-speed-enabled = true;
    alt-speed-time-enabled = true;
    alt-speed-down = 0;
    alt-speed-up = 50;
    alt-speed-time-day = 127; # all days. 65; # weekend only
    alt-speed-time-begin = 360; # 06h00 local time
    alt-speed-time-end = 1320; # 22h00 local time
    ratio-limit = 4;
    ratio-limit-enabled = true;

    rpc-enabled = true;
    rpc-bind-address = "127.0.0.1";
    rpc-port = 9091;
    rpc-whitelist = "127.0.0.1";
    rpc-whitelist-enabled = true;
    #rpc-authentication-required = true;
  };
};
}