{ stdenv
, lib
, fetchFromGitHub
, crystal
, wrapGAppsHook4
, desktopToDarwinBundle
, gobject-introspection
, gnome
, python3
, libadwaita
, openssl
, libxml2
, pkg-config
, gitUpdater
, _experimental-update-script-combinators
, runCommand
, crystal2nix
, writeShellScript
}:

crystal.buildCrystalPackage rec {
  pname = "Collision";
  version = "3.8.0";

  src = fetchFromGitHub {
    owner = "GeopJr";
    repo = "Collision";
    rev = "v${version}";
    hash = "sha256-Bo/u0UYM/N7tLqdCs2OU5pdj2s9LXPooSR1PCGk9dSc=";
  };

  postPatch = ''
    substituteInPlace Makefile \
      --replace-fail 'gtk-update-icon-cache $(PREFIX)/share/icons/hicolor' 'true'
  '';

  shardsFile = ./shards.nix;
  copyShardDeps = true;

  preBuild = ''
    cd lib/gi-crystal && shards build -Dpreview_mt --release --no-debug
    cd ../.. && mkdir bin/ && cp lib/gi-crystal/bin/gi-crystal bin/
  '';

  # Crystal compiler has a strange issue with OpenSSL. The project will not compile due to
  # main_module:(.text+0x6f0): undefined reference to `SSL_library_init'
  # There is an explanation for this https://danilafe.com/blog/crystal_nix_revisited/
  # Shortly, adding pkg-config to buildInputs along with openssl fixes the issue.

  nativeBuildInputs = [ wrapGAppsHook4 pkg-config gobject-introspection ]
    ++ lib.optionals stdenv.isDarwin [ desktopToDarwinBundle ];

  buildInputs = [
    libadwaita
    openssl
    libxml2
    gnome.nautilus-python
    python3.pkgs.pygobject3
  ];

  buildTargets = ["bindings" "build"];

  doCheck = false;
  doInstallCheck = false;

  installTargets = ["desktop" "install"];

  postInstall = ''
      install -Dm555 ./nautilus-extension/collision-extension.py -t $out/share/nautilus-python/extensions
  '';

  passthru = {
    updateScript = _experimental-update-script-combinators.sequence [
      (gitUpdater { rev-prefix = "v"; })
      (_experimental-update-script-combinators.copyAttrOutputToFile "collision.shardLock" ./shard.lock)
      { command = [ (writeShellScript "update-lock" "cd $1; ${lib.getExe crystal2nix}") ./. ]; supportedFeatures = [ "silent" ]; }
      { command = [ "rm" ./shard.lock ]; supportedFeatures = [ "silent" ]; }
    ];
    shardLock = runCommand "shard.lock" { inherit src; } ''
      cp $src/shard.lock $out
    '';
  };

  meta = with lib; {
    description = "Check hashes for your files";
    homepage = "https://github.com/GeopJr/Collision";
    license = licenses.bsd2;
    mainProgram = "collision";
    maintainers = with maintainers; [ sund3RRR ];
  };
}