{
  config,
  lib,
  username,
  ...
}:
let
  cfg = config.os.srv.syncthing;
  syncDirs = lib.mapAttrsToList (_: folder: folder.path) config.services.syncthing.settings.folders;
in
{
  options.os.srv.syncthing.enable = lib.mkEnableOption "enables syncthing syncing";
  config = lib.mkIf cfg.enable {
    systemd.tmpfiles.rules = map (path: "d ${path} 0755 ${username} users -") syncDirs;

    services.syncthing = {
      enable = true;
      user = username;
      dataDir = "/home/${username}/.local/share/syncthing";
      configDir = "/home/${username}/.config/syncthing";
      guiPasswordFile = config.sops.secrets."syncthing/gui_password".path;

      settings = {
        devices."oci".id = "DQXGVDC-KGPM6RK-5NDEBJJ-R7PEWYZ-N6Z3WFZ-TSVJG5X-235SHG4-4BEJNQJ";

        folders = {
          "openmw-config" = {
            path = "/home/${username}/.config/openmw";
            id = "openmw-config";
            devices = [
              {
                name = "oci";
                encryptionPasswordFile = config.sops.secrets."syncthing/encryption/openmw-config".path;
              }
            ];
            versioning = {
              type = "simple";
              params.keep = "3";
            };
            ignorePatterns = [
              "settings.cfg"
              "*.log"
            ];
          };

          "openmw-mods" = {
            path = "/home/${username}/games/openmw";
            id = "openmw-mods";
            devices = [
              {
                name = "oci";
                encryptionPasswordFile = config.sops.secrets."syncthing/encryption/openmw-mods".path;
              }
            ];
            versioning = {
              type = "trashcan";
              params.cleanoutDays = "7";
            };
          };

          "game-saves" = {
            path = "/home/${username}/.saves";
            id = "game-saves";
            devices = [
              {
                name = "oci";
                encryptionPasswordFile = config.sops.secrets."syncthing/encryption/game-saves".path;
              }
            ];
            versioning = {
              type = "staggered";
              params = {
                cleanInterval = "3600";
                maxAge = "2592000";
              };
            };
          };

          "keepass" = {
            path = "/home/${username}/.keepass";
            id = "keepass";
            devices = [
              {
                name = "oci";
                encryptionPasswordFile = config.sops.secrets."syncthing/encryption/keepass".path;
              }
            ];
            versioning = {
              type = "simple";
              params.keep = "10";
            };
          };

          "sync" = {
            path = "/home/${username}/sync";
            id = "sync";
            devices = [
              {
                name = "oci";
                encryptionPasswordFile = config.sops.secrets."syncthing/encryption/sync".path;
              }
            ];
            versioning = {
              type = "simple";
              params.keep = "3";
            };
          };
        };
      };
    };
  };
}