#!/usr/bin/env bash

if [ -n "${BASHRC_CXX+x}" ]; then
  return 0
else
  readonly BASHRC_CXX=1
fi

C_FLAGS=('-Wall' '-Wextra')

runc() (
  set -o errexit

  local -a c_flags=("${C_FLAGS[@]}")
  local -a src_files=()
  local -a prog_flags=()

  while [ "$#" -gt 0 ]; do
    case "$1" in
      -c|--c-flags)
        if [ "$#" -le 1 ]; then
          echo "${FUNCNAME[0]}: missing argument for parameter: $1" >&2
          return 1
        fi
        shift
        c_flags+=("$1")
        shift
        ;;

      -h)
        echo "usage: ${FUNCNAME[0]} [-h] [-c|--c-flags FLAG]"
        return 0
        ;;

      --)
        shift
        break
        ;;

      *)
        src_files+=("$( realpath "$1" )")
        shift
        ;;
    esac
  done

  prog_flags=("$@")

  local build_dir
  build_dir="$( mktemp --directory )"

  trap "$( printf 'popd > /dev/null && rm -rf %q' "$build_dir" )" 0
  pushd "$build_dir" > /dev/null

  local output_name
  output_name="$( mktemp --tmpdir=. "${FUNCNAME[0]}XXX.exe" )"

  gcc -o "$output_name" \
      "${c_flags[@]+"${c_flags[@]}"}" \
      "${src_files[@]+"${src_files[@]}"}"

  "$output_name" "${prog_flags[@]+"${prog_flags[@]}"}"
)

CXX_FLAGS=('-Wall' '-Wextra' '-std=c++14')

runcxx() (
  set -o errexit

  local cxx_flags=("${CXX_FLAGS[@]}")
  local -a src_files=()
  local -a prog_flags=()

  while [ "$#" -gt 0 ]; do
    case "$1" in
      -c|--cxx-flags)
        if [ "$#" -le 1 ]; then
          echo "${FUNCNAME[0]}: missing argument for parameter: $1" >&2
          return 1
        fi
        shift
        cxx_flags+=("$1")
        shift
        ;;

      -h)
        echo "usage: ${FUNCNAME[0]} [-h] [-c|--cxx-flags FLAG]"
        return 0
        ;;

      --)
        shift
        break
        ;;

      *)
        src_files+=("$( realpath "$1" )")
        shift
        ;;
    esac
  done

  prog_flags=("$@")

  local build_dir
  build_dir="$( mktemp --directory )"

  trap "$( printf 'popd > /dev/null && rm -rf %q' "$build_dir" )" 0
  pushd "$build_dir" > /dev/null

  local output_name
  output_name="$( mktemp --tmpdir=. "${FUNCNAME[0]}XXX.exe" )"

  g++ -o "$output_name" \
      "${cxx_flags[@]+"${cxx_flags[@]}"}" \
      "${src_files[@]+"${src_files[@]}"}"

  "$output_name" "${prog_flags[@]+"${prog_flags[@]}"}"
)