{ stdenv, lib, fetchpatch, fetchurl, fetchFromGitHub, autoconf, automake, libtool, makeWrapper, linuxHeaders
, pkgconfig, cmake, gnumake, yasm, python2Packages
, libgcrypt, libgpgerror, libunistring
, boost, avahi, lame, autoreconfHook
, gettext, pcre-cpp, yajl, fribidi, which
, openssl, gperf, tinyxml2, taglib, libssh, swig, jre
, libxml2, systemd
, alsaLib, libGLU, libGL, glew, fontconfig, freetype, ftgl
, libjpeg, libpng, libtiff
, libmpeg2, libsamplerate, libmad
, libogg, libvorbis, flac, libxslt
, lzo, libcdio, libmodplug, libass, libbluray
, sqlite, libmysqlclient, nasm, gnutls, libva, libdrm
, curl, bzip2, zip, unzip, glxinfo
, libcec, libcec_platform, dcadec, libuuid
, libcrossguid, libmicrohttpd
, bluez, doxygen, giflib, glib, harfbuzz, lcms2, libidn, libpthreadstubs, libtasn1
, libplist, p11-kit, zlib, flatbuffers, fmt, fstrcmp, rapidjson
, lirc
, x11Support ? true, libX11, xorgproto, libXt, libXmu, libXext, libXinerama, libXrandr, libXtst, libXfixes, xdpyinfo, libXdmcp
, dbusSupport ? true, dbus ? null
, joystickSupport ? true, cwiid ? null
, nfsSupport ? true, libnfs ? null
, pulseSupport ? true, libpulseaudio ? null
, rtmpSupport ? true, rtmpdump ? null
, sambaSupport ? true, samba ? null
, udevSupport ? true, udev ? null
, usbSupport  ? false, libusb-compat-0_1 ? null
, vdpauSupport ? true, libvdpau ? null
, useWayland ? false, wayland ? null, wayland-protocols ? null
, waylandpp ?  null, libxkbcommon ? null
, useGbm ? false, mesa ? null, libinput ? null
, buildPackages
}:

assert dbusSupport  -> dbus != null;
assert nfsSupport   -> libnfs != null;
assert pulseSupport -> libpulseaudio != null;
assert rtmpSupport  -> rtmpdump != null;
assert sambaSupport -> samba != null;
assert udevSupport  -> udev != null;
assert usbSupport   -> libusb-compat-0_1 != null && ! udevSupport; # libusb-compat-0_1 won't be used if udev is avaliable
assert vdpauSupport -> libvdpau != null;
assert useWayland -> wayland != null && wayland-protocols != null && waylandpp != null && libxkbcommon != null;

let
  kodiReleaseDate = "20200301";
  kodiVersion = "18.6";
  rel = "Leia";

  kodi_src = fetchFromGitHub {
    owner  = "xbmc";
    repo   = "xbmc";
    rev    = "${kodiVersion}-${rel}";
    sha256 = "0rwymipn5hljy5xrslzmrljmj6f9wb191wi7gjw20wl6sv44d0bk";
  };

  cmakeProto = fetchurl {
    url = "https://raw.githubusercontent.com/pramsey/libght/ca9b1121c352ea10170636e170040e1af015bad1/cmake/modules/CheckPrototypeExists.cmake";
    sha256  = "1zai82gm5x55n3xvdv7mns3ja6a2k81x9zz0nk42j6s2yb0fkjxh";
  };

  cmakeProtoPatch = ''
    # get rid of windows headers as they will otherwise be found first
    rm -rf msvc

    cp ${cmakeProto} cmake/${cmakeProto.name}
    # we need to enable support for C++ for check_prototype_exists to do its thing
    substituteInPlace CMakeLists.txt --replace 'LANGUAGES C' 'LANGUAGES C CXX'
    if [ -f cmake/CheckHeadersSTDC.cmake ]; then
      sed -i cmake/CheckHeadersSTDC.cmake \
        -e '7iinclude(CheckPrototypeExists)'
    fi
  '';

  kodiDependency = { name, version, rev, sha256, ... } @attrs:
    let
      attrs' = builtins.removeAttrs attrs ["name" "version" "rev" "sha256"];
    in stdenv.mkDerivation ({
      name = "kodi-${lib.toLower name}-${version}";
      src = fetchFromGitHub {
        owner = "xbmc";
        repo  = name;
        inherit rev sha256;
      };
      enableParallelBuilding = true;
    } // attrs');

  ffmpeg = kodiDependency rec {
    name    = "FFmpeg";
    version = "4.0.3";
    rev     = "${version}-${rel}-18.2";
    sha256  = "1krsjlr949iy5l6ljxancza1yi6w1annxc5s6k283i9mb15qy8cy";
    preConfigure = ''
      cp ${kodi_src}/tools/depends/target/ffmpeg/{CMakeLists.txt,*.cmake} .
      sed -i 's/ --cpu=''${CPU}//' CMakeLists.txt
      sed -i 's/--strip=''${CMAKE_STRIP}/--strip=''${CMAKE_STRIP} --ranlib=''${CMAKE_RANLIB}/' CMakeLists.txt
    '';
    cmakeFlags = lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
      "-DCROSSCOMPILING=ON"
      "-DCPU=${stdenv.hostPlatform.parsed.cpu.name}"
      "-DOS=${stdenv.hostPlatform.parsed.kernel.name}"
      "-DPKG_CONFIG_EXECUTABLE=pkgconfig"
    ];
    buildInputs = [ libidn libtasn1 p11-kit zlib libva ]
      ++ lib.optional  vdpauSupport    libvdpau;
    nativeBuildInputs = [ cmake nasm pkgconfig gnutls ];
  };

  # We can build these externally but FindLibDvd.cmake forces us to build it
  # them, so we currently just use them for the src.
  libdvdcss = kodiDependency rec {
    name              = "libdvdcss";
    version           = "1.4.2";
    rev               = "${version}-${rel}-Beta-5";
    sha256            = "0j41ydzx0imaix069s3z07xqw9q95k7llh06fc27dcn6f7b8ydyl";
    buildInputs       = [ linuxHeaders ];
    nativeBuildInputs = [ cmake pkgconfig ];
    postPatch = ''
      rm -rf msvc

      substituteInPlace config.h.cm \
        --replace '#cmakedefine O_BINARY "''${O_BINARY}"' '#define O_BINARY 0'
    '';
    cmakeFlags = [
      "-DBUILD_SHARED_LIBS=1"
      "-DHAVE_LINUX_DVD_STRUCT=1"
    ];
  };

  libdvdnav = kodiDependency rec {
    name              = "libdvdnav";
    version           = "6.0.0";
    rev               = "${version}-${rel}-Alpha-3";
    sha256            = "0qwlf4lgahxqxk1r2pzl866mi03pbp7l1fc0rk522sc0ak2s9jhb";
    buildInputs       = [ libdvdcss libdvdread ];
    nativeBuildInputs = [ cmake pkgconfig ];
    postPatch         = cmakeProtoPatch;
    postInstall = ''
      mv $out/lib/liblibdvdnav.so $out/lib/libdvdnav.so
    '';
  };

  libdvdread = kodiDependency rec {
    name              = "libdvdread";
    version           = "6.0.0";
    rev               = "${version}-${rel}-Alpha-3";
    sha256            = "1xxn01mhkdnp10cqdr357wx77vyzfb5glqpqyg8m0skyi75aii59";
    buildInputs       = [ libdvdcss ];
    nativeBuildInputs = [ cmake pkgconfig ];
    configureFlags    = [ "--with-libdvdcss" ];
    postPatch         = cmakeProtoPatch;
  };

in stdenv.mkDerivation {
    name = "kodi-${lib.optionalString useWayland "wayland-"}${kodiVersion}";

    src = kodi_src;

    buildInputs = [
      gnutls libidn libtasn1 nasm p11-kit
      libxml2 python2Packages.python
      boost libmicrohttpd
      gettext pcre-cpp yajl fribidi libva libdrm
      openssl gperf tinyxml2 taglib libssh
      alsaLib libGL libGLU fontconfig freetype ftgl
      libjpeg libpng libtiff
      libmpeg2 libsamplerate libmad
      libogg libvorbis flac libxslt systemd
      lzo libcdio libmodplug libass libbluray
      sqlite libmysqlclient avahi lame
      curl bzip2 zip unzip glxinfo
      libcec libcec_platform dcadec libuuid
      libgcrypt libgpgerror libunistring
      libcrossguid libplist
      bluez giflib glib harfbuzz lcms2 libpthreadstubs
      ffmpeg flatbuffers fmt fstrcmp rapidjson
      lirc
      # libdvdcss libdvdnav libdvdread
    ]
    ++ lib.optional x11Support [
      libX11 xorgproto libXt libXmu libXext libXdmcp
      libXinerama libXrandr libXtst libXfixes
    ]
    ++ lib.optional  dbusSupport     dbus
    ++ lib.optional joystickSupport cwiid
    ++ lib.optional  nfsSupport      libnfs
    ++ lib.optional  pulseSupport    libpulseaudio
    ++ lib.optional  rtmpSupport     rtmpdump
    ++ lib.optional  sambaSupport    samba
    ++ lib.optional  udevSupport     udev
    ++ lib.optional  usbSupport      libusb-compat-0_1
    ++ lib.optional  vdpauSupport    libvdpau
    ++ lib.optionals useWayland [
      wayland 
      waylandpp.dev 
      wayland-protocols
      # Not sure why ".dev" is needed here, but CMake doesn't find libxkbcommon otherwise
      libxkbcommon.dev
    ]
    ++ lib.optional useGbm [
      libxkbcommon.dev
      mesa.dev
      libinput.dev
    ];

    nativeBuildInputs = [
      cmake
      doxygen
      makeWrapper
      which
      pkgconfig gnumake
      autoconf automake libtool # still needed for some components. Check if that is the case with 19.0
      jre yasm gettext python2Packages.python flatbuffers

      # for TexturePacker
      giflib zlib libpng libjpeg lzo
    ] ++ lib.optionals useWayland [ wayland-protocols waylandpp.bin ];

    depsBuildBuild = [
      buildPackages.stdenv.cc
    ];

    cmakeFlags = [
      "-Dlibdvdcss_URL=${libdvdcss.src}"
      "-Dlibdvdnav_URL=${libdvdnav.src}"
      "-Dlibdvdread_URL=${libdvdread.src}"
      "-DGIT_VERSION=${kodiReleaseDate}"
      "-DENABLE_EVENTCLIENTS=ON"
      "-DENABLE_INTERNAL_CROSSGUID=OFF"
      "-DENABLE_OPTICAL=ON"
      "-DLIRC_DEVICE=/run/lirc/lircd"
      "-DSWIG_EXECUTABLE=${buildPackages.swig}/bin/swig"
      "-DFLATBUFFERS_FLATC_EXECUTABLE=${buildPackages.flatbuffers}/bin/flatc"
      "-DPYTHON_EXECUTABLE=${buildPackages.python2Packages.python}/bin/python"
    ] ++ lib.optional useWayland [
      "-DCORE_PLATFORM_NAME=wayland"
      "-DWAYLAND_RENDER_SYSTEM=gl"
      "-DWAYLANDPP_SCANNER=${buildPackages.waylandpp}/bin/wayland-scanner++"
    ] ++ lib.optional useGbm [
      "-DCORE_PLATFORM_NAME=gbm"
      "-DGBM_RENDER_SYSTEM=gles"
    ];

    enableParallelBuilding = true;

    # 14 tests fail but the biggest issue is that every test takes 30 seconds -
    # I'm guessing there is a thing waiting to time out
    doCheck = false;

    # Need these tools on the build system when cross compiling,
    # hacky, but have found no other way.
    preConfigure = lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) ''
      CXX=c++ LD=ld make -C tools/depends/native/JsonSchemaBuilder
      cmakeFlags+=" -DWITH_JSONSCHEMABUILDER=$PWD/tools/depends/native/JsonSchemaBuilder/bin"

      CXX=c++ LD=ld make EXTRA_CONFIGURE= -C tools/depends/native/TexturePacker
      cmakeFlags+=" -DWITH_TEXTUREPACKER=$PWD/tools/depends/native/TexturePacker/bin"
    '';

    postPatch = ''
      substituteInPlace xbmc/platform/linux/LinuxTimezone.cpp \
        --replace 'usr/share/zoneinfo' 'etc/zoneinfo'
    '';

    postInstall = ''
      for p in $(ls $out/bin/) ; do
        wrapProgram $out/bin/$p \
          --prefix PATH            ":" "${lib.makeBinPath ([ python2Packages.python glxinfo ] ++ lib.optional x11Support xdpyinfo)}" \
          --prefix LD_LIBRARY_PATH ":" "${lib.makeLibraryPath
              ([ curl systemd libmad libvdpau libcec libcec_platform libass ]
                 ++ lib.optional nfsSupport libnfs
                 ++ lib.optional rtmpSupport rtmpdump)}"
      done

      substituteInPlace $out/share/xsessions/kodi.desktop \
        --replace kodi-standalone $out/bin/kodi-standalone
    '';

    doInstallCheck = true;

    installCheckPhase = "$out/bin/kodi --version";

    passthru = {
      pythonPackages = python2Packages;
    };

    meta = with stdenv.lib; {
      description = "Media center";
      homepage    = "https://kodi.tv/";
      license     = licenses.gpl2;
      platforms   = platforms.linux;
      maintainers = with maintainers; [ domenkozar titanous edwtjo peterhoeg sephalon ];
    };
}