echo "Stopping impermanence mount with source: $source, target: $target, path: $path."

source_current="$source"
target_current="$target"

IFS='/' read -ra path_parts <<< "$path"
unset "path_parts[-1]"

for part in "${path_parts[@]}"; do
  source_current="$source_current/$part"
  target_current="$target_current/$part"

  if [ ! -d "$target_current" ]; then
    break
  fi

  if [ -d "$source_current" ]; then
    continue
  fi

  read -r mode owner group <<< "$(stat -c '%a %u %g' "$target_current")"
  install -d -m "$mode" -o "$owner" -g "$group" "$source_current"
done

source=$(realpath -m "$source/$path")
target=$(realpath -m "$target/$path")

if [ ! -e "$target" ] || { [ -d "$target" ] && [ -z "$(ls -A "$target")" ]; } || { [ -f "$target" ] && [ ! -s "$target" ]; }; then
  exit 0
fi

if [ -e "$source" ]; then
  >&2 echo "Error: Source $source already exists. Cannot move $target to $source."
  exit 1
fi

echo "Moving target $target to source $source."
mv "$target" "$source"