#!/usr/bin/env bash
set -euo pipefail

config_dir="${XDG_CONFIG_HOME:-$HOME/.config}/deckless"
settings_env="${DECKLESS_SETTINGS_ENV:-${config_dir}/deckless.env}"

if [[ -r "$settings_env" ]]; then
  # shellcheck disable=SC1090
  . "$settings_env"
fi

launcher=(steam -tenfoot)

if [[ "${DECKLESS_USE_GAMEMODE:-1}" != '0' ]] && command -v gamemoderun >/dev/null 2>&1; then
  launcher=(gamemoderun "${launcher[@]}")
fi

if [[ "${DECKLESS_USE_GAMESCOPE:-1}" != '0' ]] && command -v gamescope >/dev/null 2>&1; then
  refresh="${DECKLESS_GAMESCOPE_REFRESH:-240}"
  gamescope_args=(-e -f --adaptive-sync)

  if [[ -n "$refresh" ]]; then
    gamescope_args+=(-r "$refresh")
  fi

  if [[ "${DECKLESS_USE_MANGOAPP:-1}" != '0' ]]; then
    gamescope_args+=(--mangoapp)
  fi

  exec gamescope "${gamescope_args[@]}" -- "${launcher[@]}"
fi

exec "${launcher[@]}"