#!/bin/bash
# Use Linux system dependencies where possible, but take into account different .so names.

os=`uname`
if [ "$os" == 'Linux' ]; then
	locations=(/lib /lib64 /usr/lib /usr/lib64 /usr/lib/i386-linux-gnu /usr/lib/x86_64-linux-gnu /usr/local/lib /opt/lib)
	sonames=(liblua.so.5.1.5 liblua5.1.so.5.1 liblua5.1.so.0 liblua.so.5.1 liblua-5.1.so liblua5.1.so)

	if [ -f Eluant.dll.config ]; then
		exit 0
	fi

	for location in "${locations[@]}" ; do
		for soname in ${sonames[@]} ; do
			if [ -f $location/$soname ]; then
				liblua51=$soname
				echo "Detected Lua 5.1 library at "$location/$soname
				break 2
			fi
		done
	done

	if [ -z "$liblua51" ]; then
		echo "Lua 5.1 library detection failed."
		exit 1
	else
		sed "s/@LIBLUA51@/${liblua51}/" thirdparty/Eluant.dll.config.in > Eluant.dll.config
		echo "Eluant.dll.config has been created successfully."
	fi
elif [ "$os" == 'Darwin' ]; then
	if [ ! -f libSDL2.dylib ]; then
		echo "Fetching OS X SDL2 library from GitHub."
		curl -LOs https://raw.githubusercontent.com/OpenRA/OpenRALauncherOSX/master/dependencies/libSDL2.dylib
	fi

	if [ ! -f liblua.5.1.dylib ]; then
		echo "Fetching OS X Lua 5.1 library from GitHub."
		curl -LOs https://raw.githubusercontent.com/OpenRA/OpenRALauncherOSX/master/dependencies/liblua.5.1.dylib
	fi

	if [ ! -f Eluant.dll.config ]; then
		echo "Fetching OS X Lua configuration file from GitHub."
		curl -LOs https://raw.githubusercontent.com/OpenRA/OpenRALauncherOSX/master/dependencies/Eluant.dll.config
	fi
fi