{ lib
, stdenv
, fetchFromGitHub
, SDL2
, alsa-lib
, gtk3
, gtksourceview3
, libGL
, libGLU
, libX11
, libXv
, libao
, libpulseaudio
, openal
, pkg-config
, runtimeShell
, udev
# Darwin dependencies
, libicns
, Carbon
, Cocoa
, OpenAL
, OpenGL
}:

stdenv.mkDerivation rec {
  pname = "higan";
  version = "115+unstable=2021-08-18";

  src = fetchFromGitHub {
    owner = "higan-emu";
    repo = "higan";
    rev = "9bf1b3314b2bcc73cbc11d344b369c31562aff10";
    hash = "sha256-HZItJ97x20OjFKv2OVbMja7g+c1ZXcgcaC/XDe3vMZM=";
  };

  nativeBuildInputs = [
    pkg-config
  ] ++ lib.optionals stdenv.isDarwin [
    libicns
  ];

  buildInputs = [
    SDL2
    libao
  ] ++ lib.optionals stdenv.isLinux [
    alsa-lib
    gtk3
    gtksourceview3
    libGL
    libGLU
    libX11
    libXv
    libpulseaudio
    openal
    udev
  ] ++ lib.optionals stdenv.isDarwin [
    Carbon
    Cocoa
    OpenAL
    OpenGL
  ];

  patches = [
    # Includes cmath header
    ./001-include-cmath.patch
    # Uses png2icns instead of sips
    ./002-sips-to-png2icns.patch
  ];

  dontConfigure = true;

  enableParallelBuilding = true;

  buildPhase = ''
    runHook preBuild

    make -j $NIX_BUILD_CORES compiler=${stdenv.cc.targetPrefix}c++ \
         platform=linux openmp=true hiro=gtk3 build=accuracy local=false \
         cores="cv fc gb gba md ms msx ngp pce sfc sg ws" -C higan-ui
    make -j $NIX_BUILD_CORES compiler=${stdenv.cc.targetPrefix}c++ \
         platform=linux openmp=true hiro=gtk3 -C icarus

    runHook postBuild
  '';

  installPhase = ''
    runHook preInstall

  '' + (if stdenv.isDarwin then ''
    mkdir ${placeholder "out"}
    mv higan/out/higan.app ${placeholder "out"}/
    mv icarus/out/icarus.app ${placeholder "out"}/
  '' else ''
    install -d ${placeholder "out"}/bin
    install higan-ui/out/higan -t ${placeholder "out"}/bin/
    install icarus/out/icarus -t ${placeholder "out"}/bin/

    install -d ${placeholder "out"}/share/applications
    install higan-ui/resource/higan.desktop -t ${placeholder "out"}/share/applications/
    install icarus/resource/icarus.desktop -t ${placeholder "out"}/share/applications/

    install -d ${placeholder "out"}/share/pixmaps
    install higan/higan/resource/higan.svg ${placeholder "out"}/share/pixmaps/higan-icon.svg
    install higan/higan/resource/logo.png ${placeholder "out"}/share/pixmaps/higan-icon.png
    install icarus/resource/icarus.svg ${placeholder "out"}/share/pixmaps/icarus-icon.svg
    install icarus/resource/icarus.png ${placeholder "out"}/share/pixmaps/icarus-icon.png
  '') + ''
    install -d ${placeholder "out"}/share/higan
    cp -rd extras/ higan/System/ ${placeholder "out"}/share/higan/

    install -d ${placeholder "out"}/share/icarus
    cp -rd icarus/Database icarus/Firmware ${placeholder "out"}/share/icarus/
  '' + (
    # A dirty workaround, suggested by @cpages:
    # we create a first-run script to populate
    # $HOME with all the stuff needed at runtime
    let
      dest = if stdenv.isDarwin
           then "\\$HOME/Library/Application Support/higan"
           else "\\$HOME/higan";
    in ''
    mkdir -p ${placeholder "out"}/bin
    cat <<EOF > ${placeholder "out"}/bin/higan-init.sh
    #!${runtimeShell}

    cp --recursive --update ${placeholder "out"}/share/higan/System/ "${dest}"/

    EOF

    chmod +x ${placeholder "out"}/bin/higan-init.sh
  '') + ''

    runHook postInstall
  '';

  meta = with lib; {
    homepage = "https://github.com/higan-emu/higan";
    description = "An open-source, cycle-accurate multi-system emulator";
    longDescription = ''
      higan is a multi-system emulator, originally developed by Near, with an
      uncompromising focus on accuracy and code readability.

      It currently emulates the following systems: Famicom, Famicom Disk System,
      Super Famicom, Super Game Boy, Game Boy, Game Boy Color, Game Boy Advance,
      Game Boy Player, SG-1000, SC-3000, Master System, Game Gear, Mega Drive,
      Mega CD, PC Engine, SuperGrafx, MSX, MSX2, ColecoVision, Neo Geo Pocket,
      Neo Geo Pocket Color, WonderSwan, WonderSwan Color, SwanCrystal, Pocket
      Challenge V2.
    '';
    license = licenses.gpl3Plus;
    maintainers = with maintainers; [ AndersonTorres ];
    platforms = platforms.unix;
  };
}
# TODO: select between Qt, GTK2 and GTK3