STEAM="${HOME}/.local/share/Steam/steamapps/common"
GAMES="${HOME}/Games"

EXCLUDE=(
  "Proton - Experimental"
  "SteamLinuxRuntime_sniper"
  "Steamworks Shared"
  "Steam.dll"
)

is_excluded() {
  local dir=$1
  for exclude in "${EXCLUDE[@]}"; do
    if [[ "${dir}" == "${exclude}" ]]; then
      return 0
    fi
  done
  return 1
}

for game in "${STEAM}"/*/; do
  name=$(basename "${game}")

  if is_excluded "${name}"; then
    echo "Excluding ${name} from symlink creation."
    continue
  fi

  if [[ -L "${GAMES}/${name}" ]]; then
    continue
  fi

  if [[ -d "${GAMES}/${name}" || -f "${GAMES}/${name}" ]]; then
    >&2 echo "Error: ${name} is already a regular directory or file."
    continue
  fi

  echo "Creating symlink for ${name}..."
  ln -s "${game}" "${GAMES}/${name}"
done

for link in "${GAMES}"/*; do
  target=$(readlink "${link}")

  if [[ ! "${target}" == "${STEAM}/"* ]]; then
    continue
  fi

  name=$(basename "${target}")

  if [[ -e "${target}" ]] && ! is_excluded "${name}"; then
    continue
  fi

  echo "Removing symlink ${link}..."
  rm "${link}"
done