#!/bin/sh

get_library()
{
	if ! [ -f ./$1 ]; then
		echo "[SteamPlay-FTEQW] No game.so for $1 found, checking..."
		if ! [ -f ./$2 ]; then
			echo "[SteamPlay-FTEQW] Grabbing new library..."
			wget https://www.frag-net.com/dl/lib/$2
		fi
		tar xvfz ./$2
	fi
}

PLAY_RERELEASE=1

# there's run & wait-before-run, we only care about the latter.
COMMANDTYPE=$1

# this is how Steam tries to run the game
if [ "$COMMANDTYPE" == "wait-before-run" ]; then
	# dependency check...
	if ! [ -x "$(command -v wget)" ]; then
		xmessage "You don't have wget installed. Please install wget."
		exit
	fi
	if ! [ -x "$(command -v unzip)" ]; then
		xmessage "You don't have unzip installed. Please install unzip."
		exit
	fi

	# used to decipher which game we'll play
	GAMEBINARY=$(basename "$2")
	# steam game dir
	GAMEDIR=$(dirname "$2")

	# we have an unknown amount of parameters, let's make sure we get them
	# make sure this is quotes, because HeXen II has a space in its path
	PARMARR=( "$@" )
	ARGLEN=${#PARMARR[@]}

	# get every parameter after the second (game location) and put it into
	# its own variable to pass over later
	GAMEARGS=${PARMARR[@]:2:$ARGLEN-1}

	# Do we have a system-wide install of FTEQW?
	if [ -x "$(command -v fteqw)" ]; then
		ENGINE=fteqw
	else
		# If we don't... use a SteamPlay-FTEQW one
		SCRPATH="$( cd "$( dirname $(readlink -nf $0) )" && pwd )"
		PATH="$SCRPATH":"$PATH"
		ENGINE=fteqw-sdl2

		# If we don't have it, grab the latest version!
		if [ ! -f "$SCRPATH/fteqw-sdl2" ]; then
			cd "$SCRPATH"
			wget https://www.fteqw.org/dl/fteqw-sdl2-linux64.zip
			unzip fteqw-sdl2-linux64.zip
			rm fteqw-sdl2-linux64.zip readme.txt
		fi
	fi

	if [ "$GAMEBINARY" == "Quake_x64_steam.exe" ]; then
		if [ $PLAY_RERELEASE == 1 ]; then
			$ENGINE -basedir "$GAMEDIR" $GAMEARGS
		else
			NEWPATH=$(dirname "$GAMEDIR")
			$ENGINE -basedir "$NEWPATH" -quake $GAMEARGS
		fi
	elif [ "$GAMEBINARY" == "Winquake.exe" ]; then
		$ENGINE -basedir "$GAMEDIR" $GAMEARGS
	elif [ "$GAMEBINARY" == "qwcl.exe" ]; then
		$ENGINE -basedir "$GAMEDIR" -game qw $GAMEARGS
	elif [ "$GAMEBINARY" == "Glquake.exe" ]; then
		$ENGINE -basedir "$GAMEDIR" -quake $GAMEARGS
	elif [ "$GAMEBINARY" == "glqwcl.exe" ]; then
		$ENGINE -basedir "$GAMEDIR" -quake -game qw $GAMEARGS
	elif [ "$GAMEBINARY" == "quake3.exe" ]; then
		$ENGINE -basedir "$GAMEDIR" -quake3 $GAMEARGS
	elif [ "$GAMEBINARY" == "quake2.exe" ]; then
		cd "$GAMEDIR"
		get_library baseq2/game.so q2-baseq2.tgz
		get_library ctf/game.so q2-ctf.tgz
		get_library rogue/game.so q2-rogue.tgz
		get_library xatrix/game.so q2-xatrix.tgz
		$ENGINE -basedir "$GAMEDIR" -quake2 $GAMEARGS
	elif [ "$GAMEBINARY" == "glh2.exe" ]; then
		$ENGINE -basedir "$GAMEDIR" -hexen2 $GAMEARGS
	else
		$ENGINE -basedir "$GAMEDIR" $GAMEARGS
	fi
fi