# based on https://github.com/tofu-salad/emby-server-flake/tree/a8c30e4160ee9c06ff1e875cd08dfd952868a5fb

{
  pkgs,
  lib,
  fetchurl,
  ...
}:

pkgs.stdenv.mkDerivation rec {
  pname = "emby-server";
  version = "4.10.0.4";

  src = fetchurl {
    url = "https://github.com/MediaBrowser/Emby.Releases/releases/download/${version}/${pname}-deb_${version}_amd64.deb";
    sha256 = "sha256-NXsUInwhnxz7xLtB8W30LOl3LwG4NQkKkNLyHjgCzB0=";
  };

  buildInputs = with pkgs; [
    dpkg
    expat
    glibc
    lttng-ust_2_12
    zlib
  ];

  nativeBuildInputs = with pkgs; [
    autoPatchelfHook
    makeWrapper
  ];

  # Tell autoPatchelfHook where to find the bundled libraries
  autoPatchelfIgnoreMissingDeps = [
    "libavdevice.so.59"
    "libavfilter.so.8"
    "libavformat.so.59"
    "libavcodec.so.59"
    "libpostproc.so.56"
    "libswresample.so.4"
    "libswscale.so.6"
    "libavutil.so.57"
  ];

  unpackPhase = ''
    dpkg-deb -x $src unpacked
    cd unpacked
  '';

  installPhase = ''
    # Copy everything to the output
    cp -r opt/emby-server $out/

    # Remove systemd files and licenses we don't need
    rm -rf $out/lib/systemd
    rm -rf $out/licenses

    # Fix paths in scripts
    find $out/bin -type f -exec sed -i "s|/opt/emby-server|$out|g" {} \;

    # Create bin directory for wrappers
    mkdir -p $out/bin

    # Create wrapper for main emby server (disable auto-updates with empty updatepackage)
    makeWrapper "$out/bin/emby-server" $out/bin/emby \
      --prefix LD_LIBRARY_PATH : "$out/lib:$out/lib/x86_64-linux-gnu" \
      --add-flags "$out/EmbyServer.dll -ffmpeg $out/bin/emby-ffmpeg -ffprobe $out/bin/emby-ffprobe -updatepackage \"\""

    # Create wrapper for emby-ffmpeg that sets up library path
    mv $out/bin/emby-ffmpeg $out/bin/.emby-ffmpeg-unwrapped
    makeWrapper "$out/bin/.emby-ffmpeg-unwrapped" $out/bin/emby-ffmpeg \
      --prefix LD_LIBRARY_PATH : "$out/lib:$out/lib/x86_64-linux-gnu"

    # Create wrapper for emby-ffdetect
    mv $out/bin/emby-ffdetect $out/bin/.emby-ffdetect-unwrapped
    makeWrapper "$out/bin/.emby-ffdetect-unwrapped" $out/bin/emby-ffdetect \
      --prefix LD_LIBRARY_PATH : "$out/lib:$out/lib/x86_64-linux-gnu"

    # Also wrap the direct ffmpeg/ffprobe binaries
    mv $out/bin/ffmpeg $out/bin/.ffmpeg-unwrapped
    makeWrapper "$out/bin/.ffmpeg-unwrapped" $out/bin/ffmpeg \
      --prefix LD_LIBRARY_PATH : "$out/lib:$out/lib/x86_64-linux-gnu"

    mv $out/bin/ffprobe $out/bin/.ffprobe-unwrapped
    makeWrapper "$out/bin/.ffprobe-unwrapped" $out/bin/ffprobe \
      --prefix LD_LIBRARY_PATH : "$out/lib:$out/lib/x86_64-linux-gnu"

    rm -f $out/lib/libc.so.6
  '';

  # Run autoPatchelfHook manually after installPhase
  postFixup = ''
    # Patch all binaries to use system libraries where possible
    # The FFmpeg libraries from the deb will be found via LD_LIBRARY_PATH
    autoPatchelf $out/bin/.emby-ffmpeg-unwrapped || true
    autoPatchelf $out/bin/.emby-ffdetect-unwrapped || true
    autoPatchelf $out/bin/.ffmpeg-unwrapped || true
    autoPatchelf $out/bin/.ffprobe-unwrapped || true

    # Also patch other binaries
    find $out/bin -name "*.so" -exec autoPatchelf {} \; || true
  '';

  meta = {
    description = "Emby Media Server";
    homepage = "https://emby.media/";
    license = lib.licenses.unfree;
    maintainers = with lib.maintainers; [ encode42 ];
    platforms = [ "x86_64-linux" ];
    mainProgram = "emby";
  };
}