{ stdenv, buildFHSUserEnv, fetchurl, lib, pkgs, writeScript }:

let
  version = "4.3.3";
  release = "4469";
  cloudstation = stdenv.mkDerivation rec {
    name = "cloudstation-unpack";
    buildInputs = [ pkgs.dpkg pkgs.qt5.qtbase ];
    src = fetchurl {
      url =
        "https://global.download.synology.com/download/Tools/CloudStationDrive/${version}-${release}/Ubuntu/Installer/x86_64/synology-cloud-station-drive-${release}.x86_64.deb";
      sha256 = "0v84yb70knmmjzp7lyn6jgy5bnfsfd47wmqh29phybqg4zk3d47j";
    };
    unpackPhase = ''
      dpkg-deb -x $src .
    '';
    installPhase = ''
      mkdir -p $out/bin
      cp -R opt/Synology/CloudStation/* $out/
      ls -lah $out
      chmod +x $out/lib/*
      cp $out/lib/plugins/platforms/libqxcb.so $out/lib/plugins/

      # fix xcb plugin
      echo -e "[Paths]\nPlugins = ${pkgs.qt5.qtbase.bin}/${pkgs.qt5.qtbase.qtPluginPrefix}" > $out/bin/qt.conf
    '';
    dontWrapQtApps = true;
  };

in buildFHSUserEnv {
  name = "cloudstation";

  targetPkgs = pkgs:
    with pkgs;
    with xorg; [
      cloudstation
      curl
      dbus
      fontconfig
      freetype
      glib
      libICE
      libSM
      libX11
      libxcb
      openssl
      qt5.qtbase
      qt5.qttools
      qt5.qtwayland
      qt5.qtx11extras
      sqlite
      stdenv.cc.cc.lib
      xkeyboard_config
      zlib
    ];

  runScript = writeScript "cloudstation" ''
    #!/usr/bin/env bash
    export QT_PLUGIN_PATH="${pkgs.qt5.qtbase.bin}/${pkgs.qt5.qtbase.qtPluginPrefix}"
    export QT_QPA_PLATFORM=xcb
    ${cloudstation}/bin/launcher

    export LD_LIBRARY_PATH="/home/stefan/.CloudStation/CloudStation.app/lib:$LD_LIBRARY_PATH"
    ~/.CloudStation/CloudStation.app/bin/cloud-drive-ui
  '';
}