#!/bin/bash

# Downloads SteamCMD, downloads/updates the 7dtd engine

sdtdCommandUpdateengine() {
	local FORCED=no
	local CHECKONLY=no
	if [ "$1" = "--force" ]; then
		FORCED=yes
	fi

	if [ ! -e $SDTD_BASE/steamcmd ]; then
		mkdir $SDTD_BASE/steamcmd
		cd /tmp
		wget http://media.steampowered.com/installer/steamcmd_linux.tar.gz
		tar -xvzf steamcmd_linux.tar.gz -C $SDTD_BASE/steamcmd
		cd $SDTD_BASE/steamcmd
		./steamcmd.sh +quit
	fi

	if [ "$1" = "--check" -o "$2" = "--check" ]; then
		local LOCAL=$(getLocalEngineVersion)
		local REMOTE=$(getRemoteEngineVersion)
		if [ $REMOTE -gt $LOCAL ]; then
			echo "Newer engine version available."
		else
			echo "Engine up to date."
		fi
		echo "Local buildid:     $LOCAL"
		echo "Available buildid: $REMOTE"
		return
	fi

	for I in $(getInstanceList); do
		if [ $(isRunning $I) -eq 1 ]; then
			echo "At least one instance is still running (\"$I\")."
			echo "Before updating the engine please stop all instances!"
			return
		fi
	done

	local LOCAL=$(getLocalEngineVersion)
	local REMOTE=$(getRemoteEngineVersion)

	if [ "$FORCED" = "yes" -o $REMOTE -gt $LOCAL ]; then
		echo "A newer version of the engine is available."
		echo "Local buildid:     $LOCAL"
		echo "Available buildid: $REMOTE"
		echo
		
		while : ; do
			local CONTINUE
			read -p "Continue? (yn) " CONTINUE
			case $CONTINUE in
				y)
					echo "Updating..."
					break
					;;
				n)
					echo "Canceled"
					return
					;;
				*)
					echo "Wrong input"
			esac
		done

		cd $SDTD_BASE/steamcmd
		./steamcmd.sh +@sSteamCmdForcePlatformType windows +login $STEAM_USER $STEAM_PASS +force_install_dir $SDTD_BASE/engine "+app_update 294420" validate +quit

		cp $SDTD_BASE/linux_files/engine/* $SDTD_BASE/engine/ -R
		cp $SDTD_BASE/engine/Install/32bit/SteamworksManaged.dll $SDTD_BASE/engine/7DaysToDie_Data/Managed/

		chown $SDTD_USER.$SDTD_GROUP -R $SDTD_BASE/engine
	else
		echo "Engine is already at the newest build (local: $LOCAL, remote: $REMOTE)."
	fi
}

sdtdCommandUpdateengineHelp() {
	echo "Usage: $(basename $0) updateengine [--force | --check]"
	echo
	echo "Check for a newer version of engine (aka game) files of 7dtd. If there is a newer"
	echo "version they can be updated by this command."
	echo
	echo "If --force is specified you are asked if you want to redownload the engine"
	echo "even if there is no new version available."
	echo
	echo "If --check is specified it will only output the current local and remote build ids"
	echo "and if an update is available."
}

sdtdCommandUpdateengineDescription() {
	echo "Update the 7dtd engine files"
}

sdtdCommandUpdateengineExpects() {
	case $1 in
		2)
			echo "--force --check"
			;;
	esac
}