{ pkgs, config, lib, ... }:
let
  storage_dir = "/mnt/storage/syncthing";
in
{
  services.syncthing = {
    enable = true;
    dataDir = "/mnt/storage/syncthing";
    openDefaultPorts = true;
  };

  services.caddy.virtualHosts = {
    "sync.freun.dev".extraConfig = ''
      reverse_proxy localhost:8384 {
        header_up Host {upstream_hostport}
      }
    '';
  };

  fileSystems."${storage_dir}" = {
    device = "//u407959.your-storagebox.de/backup/syncthing";
    fsType = "cifs";
    options = let
      # this line prevents hanging on network split
      automount_opts = "x-systemd.automount,auto,x-systemd.device-timeout=5s,x-systemd.mount-timeout=5s";
      uid = builtins.toString config.users.users.syncthing.uid;
      gid = builtins.toString config.users.groups.syncthing.gid;
    in ["${automount_opts},credentials=/var/secrets/smb-storage,uid=${uid},gid=${gid}"];
  };


  environment.systemPackages = [ pkgs.cifs-utils ];
}