{ pkgs, google-chrome, symlinkJoin, stdenv, elmPackages, ... }:

let
  pnpm2nix = pkgs.callPackage (builtins.fetchGit {
    url = "https://github.com/notgne2/pnpm2nix.git";
    rev = "21e7f567485d5095343d5c397638e4dbeca0b4a4";
  }) {};

  nodeCleanSourceFilter = name: type: pkgs.lib.cleanSourceFilter name type &&
    ((baseNameOf name) != "node_modules");
  nodeCleanSource = src: pkgs.lib.cleanSourceWith { filter = nodeCleanSourceFilter; inherit src; };

  elmCleanSourceFilter = name: type: nodeCleanSourceFilter name type &&
    ((baseNameOf name) != "elm-stuff" && (baseNameOf name) != "dist");
  elmCleanSource = src: pkgs.lib.cleanSourceWith { filter = elmCleanSourceFilter; inherit src; };

  scrapeNodeDeps = nodePkg:
    let
      nodeDeps = (builtins.filter (x: builtins.hasAttr "nodejs" x) nodePkg.buildInputs);
    in
    pkgs.lib.unique (nodeDeps ++ builtins.concatLists (map scrapeNodeDeps nodeDeps));

  findNodeDep = nodePkg: name:
    (builtins.elemAt 0 (builtins.filter (x: x.pname == name) (scrapeNodeDeps nodePkg)));

  builderPkg = pnpm2nix.mkPnpmPackage {
    name = "builder-node-packages";
    packageJSON = ./package.json;
    pnpmLock = ./pnpm-lock.yaml;
    src = nodeCleanSource ./.;
    overrides = pnpm2nix.defaultPnpmOverrides // {
      puppeteer = (drv: drv.overrideAttrs(oldAttrs: {
        preBuild = ''
          # Define the local chromium directory
          local_chromium=$HOME/node_modules/puppeteer/.local-chromium/linux-686378
          # Make sure that directory exists
          mkdir -p $local_chromium
          # Link pkgs' standard google chrome into place
          cp -r --no-preserve=mode,ownership ${google-chrome}/share/google/chrome $local_chromium/chrome-linux
          cp ${google-chrome}/bin/google-chrome-stable $local_chromium/chrome-linux/chrome
          chmod +x $local_chromium/chrome-linux/chrome
        '';
      }));
    };
  };

  mkWandardFront = {
    name,
    src,
    nodePackages ? null,
    routes ? [ "/" ],
  }:
    let
      nodeSource = symlinkJoin {
        name = "${name}-node-sources";
        paths = [
          builderPkg.lib
        ] ++ (if nodePackages != null then [ nodePackages ] else [ ]);
      };

      baseWebpackConfig = builtins.readFile ./webpack.config.js;
      webpackConfig = ''
        const ROUTES = ${builtins.toJSON routes}
      '' + "\n" + baseWebpackConfig;
      webpackConfigFile = pkgs.writeText "${name}-webpack-config" webpackConfig;
    in
    stdenv.mkDerivation {
      inherit name;

      src = elmCleanSource src;

      buildInputs = with elmPackages; [
        elm
        elm-format
        nodeSource
      ];

      patchPhase = ''
        ln -sf ${nodeSource}/node_modules .
        cp ${webpackConfigFile} webpack.config.js
      '';

      shellHook = ''
        ln -sf ${nodeSource}/node_modules .
      '';

      buildPhase = elmPackages.fetchElmDeps {
        elmPackages = import (src + "/elm-srcs.nix");
        versionsDat = src + "/versions.dat";
      };

      installPhase = ''
        mkdir -p $out
        ${nodeSource}/node_modules/webpack-cli/bin/cli.js --mode production
        ls dist
        cp -r dist/* $out
      '';
    };
in
{
  inherit mkWandardFront;
}