default.nix

{ pkgs ? import <nixpkgs> {} }:

with pkgs;

let
  inherit (lib) optional optionals;

  erlang = pkgs.beam.interpreters.erlangR24;
  elixir = pkgs.beam.packages.erlangR24.elixir_1_13;
  nodejs = pkgs.nodejs-18_x;

  sass_version = "1.53.0";
  sass_src = fetchurl {
    url = "https://github.com/sass/dart-sass/releases/download/${sass_version}/dart-sass-${sass_version}-linux-x64.tar.gz";
    sha256 = "MXSHrU96WHQMNgxKPPyHdIl8+wXI2KL7cNvDsWZoZKI=";
  };

in
lib.fix (self: {
  app = stdenv.mkDerivation {
    name = "frontend";
    buildInputs = [
      cacert
      erlang
      elixir
      file
      nodejs
      rebar3
      inotify-tools
      cargo
      imagemagick
      texlive.combined.scheme-full
    ];

  shellHook = ''
    : ''${PGPORT:=5432}
    : ''${PGDATABASE:=questionaires_dev}

    # this allows mix to work on the local directory
    mkdir -p .nix-mix
    mkdir -p .nix-hex
    export MIX_HOME=$PWD/.nix-mix
    export HEX_HOME=$PWD/.nix-hex
    export PATH=$MIX_HOME/bin:$PATH
    export PATH=$HEX_HOME/bin:$PATH
    export LANG=en_US.UTF-8
    export ERL_AFLAGS="-kernel shell_history enabled"

    if [ ! -d .sass ]; then
      echo "Unpack sass..."
      mkdir .sass
      tar -C .sass -xf ${sass_src}
    fi
    export LD_LIBRARY_PATH=$PWD/.sass/dart-sass/
    export MIX_SASS_PATH=$PWD/.sass/dart-sass/sass
    export MIX_SASS_VERSION=${sass_version}
    export RUSTLER_NIF_VERSION=2.14

    createdb -Upostgres $PGDATABASE 2>/dev/null
    if [ $? -eq 0 ]; then
      echo "importing test/questionaires.sql..."
      psql -Upostgres $PGDATABASE < test/questionaires.sql
    fi

		alias psql="psql -Upostgres $PGDATABASE"
		unset SSH_ASKPASS
  '';
  };
  dockerImage = dockerTools.buildLayeredImage {
    name = "frontend";
    tag = environment;
    maxLayers = 100;
    config = { Cmd = [ startRunit ]; };
    contents = [ self.foo ];
  };
})