# this file is a function, which returns functions, which in turn
# return derivations for various versions of workadventure, because
# apparently nix just works that way.
#
# Note that this is meant to be compatible with as many of the existing
# workadventure forks as possible — so some parts of this may seem outdated
# or be entirely useless with the "official" version, but are kept in
# case other forks still need them.

workadventuresrc: waname:

{ stdenv
, makeWrapper
, workadventure
, yarn2nix-moretea
, lib
, replace
, environment ? {PUSHER_URL = "https://example.org/dummy/pusher";}
, ... }:

let
  envIf = name: script: if environment ? name then script else "";
in
yarn2nix-moretea.mkYarnPackage 
  (rec {
    pname = "workadventurefront-${waname}";
    version = "unstable";
    name = pname + "-" + version;

    src = "${workadventuresrc}/front";

    yarnNix = ./. + "/${waname}.nix";

    nativeBuildInputs = [
      makeWrapper
      # includes `replace-literal` for patching. This command is
      # actually the basis for `substituteInPlace`!
      replace
    ];

    dontStrip = true;

    patchPhase = ''
      # copy input to actual input location (see the ./templater.sh file in newer wa versions)
      cp dist/index.tmpl.html dist/index.tmpl.html.tmp
      # remove google tag manager (for older versions)
      replace-literal -efsw '<script async src="https://www.googletagmanager.com/gtag/js?id=UA-10196481-11"></script>' ' ';
      # remove quill js cdn
      replace-literal -efsr -x .ts 'fileref.setAttribute("href", "https://cdn.quilljs.com/1.3.7/quill.snow.css");' ' ';
      replace-literal -efsr '"@types/quill": "^1.3.7",' ' ';
      replace-literal -efsr '"quill": "^1.3.7",' ' ';
    ''
    + envIf "RESOLUTION" ''replace-literal -efsr -x .ts 'const RESOLUTION = 2' 'const RESOLUTION = ${environment.RESOLUTION}' ''
    + envIf "ZOOM_LEVEL" ''replace-literal -efsr -x .ts 'const ZOOM_LEVEL = 1' 'const ZOOM_LEVEL = ${environment.ZOOM_LEVEL}' ''
    + envIf "POSITION_DELAY" ''replace-literal -efsr -x .ts 'const POSITION_DELAY = 200' 'const POSITION_DELAY = ${environment.POSITION_DELAY}' ''
    + envIf "MAX_EXTRAPOLATION_TIME" ''replace-literal -efsr -x .ts 'const MAX_EXTRAPOLATION_TIME = 100' 'const MAX_EXTRAPOLATION_TIME = ${environment.MAX_EXTRAPOLATION_TIME}' '';

    buildPhase = ''
      mkdir -p $out
      ln -s ${workadventure.messages.outPath}/generated deps/workadventurefront/src/Messages/generated
      HOME=$TMPDIR yarn --offline run build
      cp -r deps/workadventurefront/dist/ $out/
    '';

    distPhase = ":";
    installPhase = ":";
  } // environment)