#!/bin/bash
set -e

WINEVERSION="${VERSION:-"latest"}"

WINEHOME=$_REMOTE_USER_HOME
WINEPREFIX="$WINEHOME/.wine32"
WINEARCH="win32"
WINEDEBUG="-all"

update_rc_file() {
  # see if folder containing file exists
  local rc_file_folder
  rc_file_folder="$(dirname "$1")"
  if [ ! -d "${rc_file_folder}" ]; then
    echo "${rc_file_folder} does not exist. Skipping update of $1."
  elif [ ! -e "$1" ] || [[ "$(cat "$1")" != *"$2"* ]]; then
    echo "$2" >>"$1"
  fi
}

install_debian() {
  export DEBIAN_FRONTEND=noninteractive
  dpkg --add-architecture i386
  apt-get update
  apt-get install -y --no-install-recommends \
    apt-transport-https \
    ca-certificates \
    telnet \
    cabextract \
    gnupg2 \
    wget

  wget https://dl.winehq.org/wine-builds/winehq.key -O - | apt-key add -
  echo "deb https://dl.winehq.org/wine-builds/debian $VERSION_CODENAME main" >/etc/apt/sources.list.d/winehq.list

  if [ "${WINEVERSION}" != "latest" ]; then
    {
      echo "Package: *wine* *wine*:i386"
      echo "Pin: version $WINEVERSION~*"
      echo "Pin-Priority: 1001"
    } >/etc/apt/preferences.d/winehq.pref
  fi

  apt-get update
  apt-get install -y --no-install-recommends winehq-staging

  wget https://raw.githubusercontent.com/Winetricks/winetricks/master/src/winetricks -O /usr/bin/winetricks
  chmod +rx /usr/bin/winetricks

  snippet="export WINEHOME=\"$_REMOTE_USER_HOME\"
export WINEPREFIX=\"\$WINEHOME/.wine32\"
export WINEARCH=win32
export WINEDEBUG=-all"

  update_rc_file "$_REMOTE_USER_HOME/.zshenv" "${snippet}"
  update_rc_file "$_REMOTE_USER_HOME/.profile" "${snippet}"
  update_rc_file "$_REMOTE_USER_HOME/.bashrc" "${snippet}"

  su -l "$_REMOTE_USER" -c "mkdir -p $WINEPREFIX && wine wineboot --init"
  su -l "$_REMOTE_USER" -c "echo \"check-certificate=off\" >> ~/.wgetrc"
  su -l "$_REMOTE_USER" -c "winetricks corefonts"

  # Cleanup
  apt purge --auto-remove -y
  apt autoremove --purge -y
  rm -rf /var/lib/apt/lists/*
}

. /etc/os-release

if [ "${ID}" = "debian" ]; then
  install_debian
else
  echo "Linux distro ${ID} not supported."
  exit 1
fi