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

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

  src = if inputs != null && inputs ? wallpaper-engine-plugin-src
    then inputs.wallpaper-engine-plugin-src
    else pkgs.fetchFromGitHub {
      owner = "catsout";
      repo = "wallpaper-engine-kde-plugin";
      rev = "9e60b364e268814a1a778549c579ad45a9b9c7bb";
      sha256 = "sha256-tKeYJvVa8jzbyZ7MQaOuCUJa+UqABolTNe3e5XNw998=";
      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.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
  ];

  # Disable the scene backend since it's missing CMakeLists.txt
  postPatch = ''
    sed -i 's|add_subdirectory(backend_scene)|# add_subdirectory(backend_scene)|' src/CMakeLists.txt
    
    # Remove wescene-renderer-qml library link dependency
    sed -i 's|wescene-renderer-qml|# wescene-renderer-qml|' src/CMakeLists.txt
    
    # Remove SceneBackend dependencies from PluginInfo.cpp
    sed -i '/^#include "SceneBackend.hpp"/d' src/PluginInfo.cpp
    sed -i 's|QString::fromStdString(scenebackend::SceneObject::GetDefaultCachePath())|QStandardPaths::writableLocation(QStandardPaths::CacheLocation) + "/wallpaper-engine-kde-plugin"|' src/PluginInfo.cpp
    
    # Add missing includes to PluginInfo.cpp
    sed -i '/#include <QCoreApplication>/a #include <QStandardPaths>' src/PluginInfo.cpp
    sed -i '/#include <QCoreApplication>/a #include <QUrl>' src/PluginInfo.cpp
    
    # Remove SceneBackend dependencies from plugin.cpp
    sed -i '/^#include "SceneBackend.hpp"/d' src/plugin.cpp
    sed -i '/qmlRegisterType<scenebackend::SceneObject>/d' src/plugin.cpp
    
    # 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
  '';

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

  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 = [];
  };
}