Wrapper for running HobbitInstaller for FF8 in Linux

hobbit_wrapper.sh

#!/bin/bash
# Locate SteamLibrary containing app_id
getSteamLibrary() {
  local app_id="$1"

  local path=$(
  awk -v app_id="$app_id" '
    /^[[:space:]]*"[0-9]+"$/ {
    in_block = 1;
    block = $0;
    next;
    }
    in_block {
    block = block "\n" $0;
    if ($0 ~ /^\s*}/) {
      in_block = 0;
      if (block ~ app_id) {
      match(block, /"path"\s+"([^"]+)"/, arr);
      print arr[1];
      exit;
      }
    }
    }
  ' "${HOME}/.steam/root/steamapps/libraryfolders.vdf"
  )

  echo "$path"
}

# Download from GitHub
downloadDependency() {
  local XDG_CACHE_HOME="${XDG_CACHE_HOME:=${HOME}/.cache}"
  local REPO=$1
  local FILTER=$2
  local RETURN_VARIABLE=$3
  local RELEASE_URL=$(
  curl -s https://api.github.com/repos/"$REPO"/releases/latest  \
  | grep "browser_download_url.$FILTER" \
  | head -1 \
  | cut -d : -f 2,3 \
  | tr -d \")
  local FILENAME="${XDG_CACHE_HOME}/$(basename "$RELEASE_URL")"
  if [ -f "$FILENAME" ]; then
  echo "$FILENAME is ready to be installed."
  else
  echo "$FILENAME not found. Downloading..."
  curl -#SL -o $FILENAME $RELEASE_URL
  fi
  eval "${RETURN_VARIABLE}=\"$FILENAME\""
}

FF8_DIR=$(LIBRARY=$(getSteamLibrary 39150) && [ -n "$LIBRARY" ] && echo "$LIBRARY/steamapps/common/FINAL FANTASY VIII" || echo "NONE")
if [ "$FF8_DIR" = "NONE" ]; then
   echo "Error: Couldn't detect FF8 library."
   exit 1
fi

shopt -s expand_aliases
if which protontricks &> /dev/null; then
  echo "Native Protontricks already installed. Continuing."
else
  echo "Installing Protontricks via flatpak"
  alias protontricks='flatpak run com.github.Matoking.protontricks'
  alias protontricks-launch='flatpak run --command=protontricks-launch com.github.Matoking.protontricks'
  flatpak --system install com.github.Matoking.protontricks -y
  flatpak override --user --filesystem=/run/media/mmcblk0p1 com.github.Matoking.protontricks
  echo
fi

echo "Downloading HobbitInstaller"
downloadDependency "HobbitDur/HobbitInstaller" "*.zip" ZIPFILE
unzip -u "$ZIPFILE" -d "$FF8_DIR"
echo

echo "Launching HobbitInstaller"
cd "$FF8_DIR"
protontricks-launch --appid 39150 "HobbitInstaller.exe" &> /dev/null
cd -
echo

echo "Done! You can close this window now."