#!/usr/bin/env bash

# Author: w0rp <devw0rp@gmail.com>, hauleth <lukasz@niemier.pl>
# Description: This script wraps DMD so we can get something which is capable of reading
#   D code from stdin.

set -eu

check_dubfile() {
  [[ -e "$1/dub.json" || -e "$1/dub.sdl" || -e "$1/package.json" ]]
}

traverse() {
  path=$(pwd)
  while [ "$path" != "/" ] \
    && ! check_dubfile "$path"
  do
    path=$(dirname "$path")
  done

  echo "$path"
}

import_line_options() {
  root="$(traverse)"

  if check_dubfile "$root"
  then
    dub describe --root="$root" --import-paths | awk '{ print "-I" $0 }'
  else
    echo -n
  fi
}

temp_dir=$(mktemp -d 2>/dev/null || mktemp -d -t 'ale_linters')
temp_file="$temp_dir/file.d"
trap 'rm -r "$temp_dir"' EXIT

while read -r; do
  echo "$REPLY" >> "$temp_file"
done

dmd $(import_line_options) "$@" "$temp_file"