{ lib
, rustPlatform
, stdenvNoCC
, fetchFromGitHub
, fetchYarnDeps
, wrapGAppsHook
, esbuild
, glib-networking
, nodejs
, openssl
, pkg-config
, pnpm-lock-export
, prefetch-yarn-deps
, webkitgtk
, yarn
, makeDesktopItem
}:

let
  pname = "theseus";
  version = "0.6.3";

  src = fetchFromGitHub {
    owner = "modrinth";
    repo = "theseus";
    rev = "v${version}";
    sha256 = "sha256-ted5EBlF1IRpWo//wOxgPHrGKLphqAPQ0R3q14DpUS4=";

    nativeBuildInputs = [ pnpm-lock-export ];
    postFetch = ''
      (cd $out/theseus_gui && pnpm-lock-export --schema yarn.lock@v1)
    '';
  };

  frontend = stdenvNoCC.mkDerivation {
    pname = "theseus-ui";

    inherit version src;

    sourceRoot = "${src.name}/theseus_gui";

    offlineCache = fetchYarnDeps {
      yarnLock = "${src}/theseus_gui/yarn.lock";
      hash = "sha256-2ywL7K2rEl3tR4KLhxDPzG7ixGWDFjg2S5RTBT+SOWQ=";
    };

    nativeBuildInputs = [
      nodejs
      yarn
      prefetch-yarn-deps
    ];

    env.ESBUILD_BINARY_PATH = lib.getExe (esbuild.overrideAttrs (final: _: {
      version = "0.17.19";
      src = fetchFromGitHub {
        owner = "evanw";
        repo = "esbuild";
        rev = "v${final.version}";
        hash = "sha256-PLC7OJLSOiDq4OjvrdfCawZPfbfuZix4Waopzrj8qsU=";
      };
      goModules = esbuild.goModules.overrideAttrs ({
        inherit (final) src;
        outputHash = "sha256-+BfxCyg0KkDQpHt/wycy/8CTG6YBA/VJvJFhhzUnSiQ=";
      });
    }));

    postPatch = ''
      substituteInPlace yarn.lock --replace \
        'tauri-plugin-window-state-api@0.0.0' \
        'tauri-plugin-window-state-api@github:tauri-apps/tauri-plugin-window-state#v1'
    '';

    configurePhase = ''
      runHook preConfigure

      export HOME=$(mktemp -d)
      yarn config --offline set yarn-offline-mirror $offlineCache
      fixup-yarn-lock yarn.lock
      yarn install --offline --frozen-lockfile --ignore-platform --ignore-scripts --no-progress --non-interactive
      patchShebangs node_modules/

      runHook postConfigure
    '';

    buildPhase = ''
      runHook preBuild

      yarn --offline build

      runHook postBuild
    '';

    installPhase = ''
      runHook preInstall

      cp -r dist $out

      runHook postInstall
    '';
  };

     desktopItem = makeDesktopItem {
      name = pname;
      desktopName = "Modrinth Theseus Launcher";
      exec = "theseus_gui";
      icon = pname;
      comment = description;
      categories = [ "Game" ];
      startupNotify = false;
    }; 

    description =  "Modrinth game launcher";
in
  rustPlatform.buildRustPackage {
    inherit pname version src frontend description;

    cargoLock = {
      lockFile = ./Cargo.lock;
      outputHashes = {
        "tauri-plugin-single-instance-0.0.0" = "sha256-G4h2OXKPpZMmradutdUWxGG5axL9XMz2ACAe8AQ40eg=";
      };
    };

    nativeBuildInputs = [
      wrapGAppsHook
      pkg-config
    ];
    
    postInstall = ''
      install -Dm0644 {${desktopItem},$out}/share/applications/${pname}.desktop

      pushd ${src}/theseus_gui/src-tauri/icons
      for file in *.png; do
        install -Dm0644 $file $out/share/icons/hicolor/''${file//.png}/apps/${pname}.png
      done
      popd
      wrapProgram $out/bin/theseus_gui --set WEBKIT_DISABLE_COMPOSITING_MODE 1 # X11 is weird, this is required for some reason....
    '';

    buildInputs = [
      openssl
      webkitgtk
      glib-networking
    ];

    preConfigure = ''
      ln -s $frontend theseus_gui/dist
    '';

    meta = with lib; {
      inherit description;
      longDescription = ''
        A game launcher which can be used as a CLI, GUI, and a library for creating and playing modrinth projects.
      '';
      homepage = "https://github.com/modrinth/theseus";
      changelog = "https://github.com/modrinth/theseus/releases/tag/v${version}";
      license = licenses.gpl3;
      maintainers = [ maintainers.grimmauld ];
      platforms = platforms.linux;
    };
  }