{ lib, pkgs, inputs ? null, ... }:

pkgs.kdePackages.mkKdeDerivation rec {
  pname = "wallpaper-engine-plugin";
  version = "unstable-2023-07-01";

  # Always use fetchgit to ensure submodules are properly fetched
  src = pkgs.fetchgit {
    url = "https://github.com/catsout/wallpaper-engine-kde-plugin.git";
    rev = "9e60b364e268814a1a778549c579ad45a9b9c7bb";
    hash = "sha256-zEpELmuK+EvQ1HIWxCSAGyJAjmGgp0yqjtNuC2DTES8=";
    fetchSubmodules = true;
  };

  extraNativeBuildInputs = [
    pkgs.kdePackages.kpackage
    pkgs.pkg-config
    (pkgs.python3.withPackages (ps: with ps; [ websockets ]))
  ];

  extraBuildInputs = [
    pkgs.kdePackages.extra-cmake-modules
    pkgs.kdePackages.libplasma
    pkgs.lz4
    pkgs.mpv
    pkgs.lua
    pkgs.libass
    pkgs.libsysprof-capture
    pkgs.fribidi
    pkgs.ffmpeg
    pkgs.libplacebo
    pkgs.libunwind
    pkgs.shaderc
    pkgs.lcms2
    pkgs.libdovi
    pkgs.libdvdnav
    pkgs.libdvdread
    pkgs.vulkan-headers
    pkgs.vulkan-loader
    pkgs.spirv-tools
    pkgs.gst_all_1.gstreamer
    pkgs.gst_all_1.gst-plugins-base
    pkgs.gst_all_1.gst-plugins-good
    pkgs.gst_all_1.gst-plugins-bad
    pkgs.gst_all_1.gst-plugins-ugly
    pkgs.gst_all_1.gst-libav
    pkgs.mujs
    # Additional dependencies for scene backend
    pkgs.libGL
    pkgs.mesa
    pkgs.eigen
    pkgs.nlohmann_json
    pkgs.libarchive
    pkgs.libbluray
    pkgs.rubberband
    pkgs.libuchardet
    pkgs.zimg
    pkgs.alsa-lib
    pkgs.openal
    pkgs.pipewire
    pkgs.libpulseaudio
    pkgs.libcaca
    pkgs.libdisplay-info
    pkgs.libgbm
    pkgs.xorg.libXScrnSaver
    pkgs.xorg.libXpresent
    pkgs.xorg.libXv
    pkgs.xorg.libXext
    pkgs.xorg.libXinerama
    pkgs.xorg.libXrandr
    pkgs.libdrm
    pkgs.wayland
    pkgs.wayland-protocols
    pkgs.jack2
    pkgs.libsndfile
    pkgs.libsamplerate
    pkgs.libvorbis
    pkgs.flac
    pkgs.libopus
    pkgs.libmad
    pkgs.libmodplug
    pkgs.speex
    pkgs.libtheora
    pkgs.libvpx
    pkgs.x264
    pkgs.x265
    pkgs.libaom
    pkgs.dav1d
    pkgs.svt-av1
    pkgs.nv-codec-headers-12
    pkgs.libva
    pkgs.libvdpau
  ];

  # Apply Qt6 compatibility fixes
  postPatch = ''
    # Fix Qt6 deprecation warnings in MouseGrabber.cpp
    sed -i 's|event->localPos()|event->position()|g' src/MouseGrabber.cpp
    sed -i 's|event->screenPos()|event->globalPosition()|g' src/MouseGrabber.cpp
    sed -i 's|event->posF()|event->position()|g' src/MouseGrabber.cpp
    
    # Fix QMouseEvent and QHoverEvent constructors for Qt6 (cast device to QPointingDevice*)
    sed -i 's|event->modifiers());|event->modifiers(), static_cast<const QPointingDevice*>(event->device()));|g' src/MouseGrabber.cpp
    
    # Fix Qt6 deprecation warning in qthelper.hpp
    sed -i 's|v.type()|v.metaType().id()|g' src/backend_mpv/qthelper.hpp
    
    # Fix Qt6 qplatformnativeinterface.h removal in MpvBackend.cpp
    # Wrap the Qt5-only header in version check
    sed -i '/#    include <qpa\/qplatformnativeinterface.h>/{
      i\#if (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
      a\#endif
    }' src/backend_mpv/MpvBackend.cpp
    
    # Remove TODO comments
    sed -i '/TODO.*QX11Application/d' src/backend_mpv/MpvBackend.cpp
    sed -i '/same for wayland/d' src/backend_mpv/MpvBackend.cpp
    
    # Fix X11 display access for Qt6
    sed -i '/params\[2\].type = MPV_RENDER_PARAM_X11_DISPLAY;/,/params\[2\].data = QX11Info::display();/{
      s|auto\* native   = QGuiApplication::platformNativeInterface();|auto* x11App = qApp->nativeInterface<QNativeInterface::QX11Application>();|
      s|params\[2\].data = native->nativeResourceForWindow("display", nullptr);|params[2].data = x11App ? x11App->display() : nullptr;|
    }' src/backend_mpv/MpvBackend.cpp
    
    # Fix Wayland display access for Qt6
    sed -i '/params\[2\].type = MPV_RENDER_PARAM_WL_DISPLAY;/,/params\[2\].data = native->nativeResourceForWindow("display", nullptr);/{
      /params\[2\].type = MPV_RENDER_PARAM_WL_DISPLAY;/a\#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))\
        auto* waylandApp = qApp->nativeInterface<QNativeInterface::QWaylandApplication>();\
        params[2].data = waylandApp ? waylandApp->display() : nullptr;\
#else
      /params\[2\].data = native->nativeResourceForWindow/a\#endif
    }' src/backend_mpv/MpvBackend.cpp
  '';

  cmakeFlags = [
    "-DQt6_DIR=${pkgs.kdePackages.qtbase}/lib/cmake/Qt6"
    "-DUSE_PLASMAPKG=OFF"
    "-DQT_MAJOR_VERSION=6"
    "-DBUILD_QML=ON"
    "-DBUILD_SCENE=ON"
  ];

  dontWrapQtApps = true;

  postInstall = ''
    cd $out/share/plasma/wallpapers/com.github.catsout.wallpaperEngineKde
    chmod +x ./contents/pyext.py
    patchShebangs --build ./contents/pyext.py
    cd -
  '';

  meta = with lib; {
    description = "KDE wallpaper plugin integrating Wallpaper Engine";
    homepage = "https://github.com/catsout/wallpaper-engine-kde-plugin";
    license = licenses.gpl2Plus;
    platforms = platforms.linux;
    maintainers = [];
  };
}