#!/bin/bash
unset WINEPREFIX
export WINEPREFIX="$HOME"/.local/share/gog-heroes-of-might-and-magic-3-complete-edition 
SOURCE=/opt/gog/heroes-of-might-and-magic-3-complete-edition
DATA_DIR="${WINEPREFIX}/HoMM3-data"
UNIONFS_MNT="${WINEPREFIX}/drive_c/GOG Games/HoMM 3 Complete"
if [ ! -d "$WINEPREFIX" ]
then
  mkdir -p "$WINEPREFIX"
  wineboot -i
fi
if ! mountpoint "${UNIONFS_MNT}"
then
  if ! unionfs -o cow,allow_other,relaxed_permissions,suid,dev ${DATA_DIR}=RW:${SOURCE}=RO "${UNIONFS_MNT}"
  then
    echo "Failed to mount unionfs" >&2
    exit 1
  fi
fi
cd "${UNIONFS_MNT}"
wine h3ccmped.exe "$@"
cd ..
fusermount -u "${UNIONFS_MNT}"