#!/bin/sh

set -e

bootstrap_install() {
	install -dv "$destdir"
	install -dv "$bindir"
	install -dv "$libdir"
	install -dv "$docdir"
	install -d "$prefix/bin/"
	install -d "$prefix/share/applications/"
	for eta in ./eve-transl${qtver}-??.tar.gz ;do
		install -m 0644 "$eta" "$libdir"
	done
	if [ -f "./dxvk-$dvver.tar.gz" ] ;then
		install -d "$libdir/dxvk/"
		echo "$dvver" >"$libdir/dxvk/version"
		chmod 0644 "$libdir/dxvk/version"
		tar xf ./dxvk-$dvver.tar.gz -C $libdir/dxvk/ --no-same-owner \
			--strip-components=1 dxvk-$dvver/x32 dxvk-$dvver/x64
	fi
	install -m 0644 "./evesetup.shlib" "$libdir"
	install -m 0644 "./evelauncher-${elver}.tar.gz" "$libdir"
	install -m 0644 "./evelauncher.kwinrule" "$docdir"
	install -m 0644 "./evelauncher.lua" "$docdir"
	sed -i s,./eve-transl,$libdir/eve-transl, ./evelauncher.sh
	for cmd in backup launcher.sh regedit restore wine winecfg winetricks ;do
		cmd=eve$cmd
		if [ -f "./$cmd" ] ;then
			sed -i s,SETUPDIR=\"\",SETUPDIR=\"$destdir\", ./$cmd
			sed -i s,./evesetup.shlib,$libdir/evesetup.shlib, ./$cmd
			install "./$cmd" "$bindir/"
		else
			if [ "$cmd" = "everestore" ] ;then
				ln -s evebackup "$bindir/$cmd"
			else
				ln -s evewine "$bindir/$cmd"
			fi
		fi
		[ "$bindir" != "$prefix/bin" ] && ln -s "$bindir/$cmd" "$prefix/bin/$cmd"
		if [ ! "$cmd" = "evewine" ] ;then
			oexec=$(grep Exec= ./${cmd%.*}.desktop)
			sed -i s,$oexec,Exec=$prefix/bin/$cmd, ./${cmd%.*}.desktop
			install -m 0644 "./${cmd%.*}.desktop" "$prefix/share/applications/"
		fi
	done
	for icons in $(find . -type f -name '*.png') ;do
		install -D -m 0644 "$icons" "$prefix/share/${icons#*/}"
	done
	if [ -x $(which gtk-update-icon-cache) ] ;then
		if [ -f "${prefix}/share/icons/hicolor/icon-theme.cache" ] ;then
			gtk-update-icon-cache -t -f "${prefix}/share/icons/hicolor" 2>/dev/null
			chmod 0644 "${prefix}/share/icons/hicolor/icon-theme.cache"
		fi
	fi
}

bootstrap_remove() {
	for icons in $(find . -type f -name '*.png') ;do
		rm -f "$prefix/share/${icons#*/}"
	done
	for cmd in backup launcher.sh regedit restore wine winecfg winetricks ;do
		cmd=eve$cmd
		rm -fv "$prefix/bin/$cmd"
		if [ ! "$cmd" = "evewine" ] ;then
			rm -f "$prefix/share/applications/${cmd%.*}.desktop"
		fi
	done
	printf "\nRemove $destdir...\n"
	rm -rf "$destdir"
}

build_lib() {
	if [ ! -r "./evelauncher-$elver.tar.gz" ] ;then
		printf "\nDownload evelauncher-$elver.tar.gz...\n\n"
		$dltool https://binaries.eveonline.com/evelauncher-$elver.tar.gz
	fi
	rcsum="$(sha256sum ./evelauncher-$elver.tar.gz| cut -d' ' -f1)"
	if [ "$rcsum" != "$elcsum" ] ;then
		printf "\n\nError: Checksum evelauncher-$elver.tar.gz mismatch!"
		printf "\nLeaving.\n\n"
		exit 0
	fi
	printf "\nExtract evelauncher-$elver.tar.gz..."
	tar xf evelauncher-$elver.tar.gz
	echo "done."
	printf "\nClean up evelauncher directory..."
	cd evelauncher/
	rm -f ./*.a ./*.la ./*.pem ./*.prl ./libxcb*
	cp -f ../evelauncher.sh.real ./evelauncher.sh
	chmod 0755 ./*
	chmod 0644 ./*.qm ./*.conf ./errorpage/*
	echo "done."
	printf "\nReplace identical files with symbolic links..."
	ln -sf evelauncher.sh LogLite.sh
	ln -sf libicudata.so.55.1 libicudata.so
	ln -sf libicudata.so.55.1 libicudata.so.55
	ln -sf libicui18n.so.55.1 libicui18n.so
	ln -sf libicui18n.so.55.1 libicui18n.so.55
	ln -sf libicuuc.so.55.1 libicuuc.so
	ln -sf libicuuc.so.55.1 libicuuc.so.55
	ln -sf libgpr.so.6.0.0 libgpr.so
	ln -sf libgpr.so.6.0.0 libgpr.so.6
	ln -sf libgrpc++.so.1.12.0 libgrpc++.so
	ln -sf libgrpc++.so.1.12.0 libgrpc++.so.1
	ln -sf libgrpc++.so.1.12.0 libgrpc++.so.6
	ln -sf libgrpc.so.6.0.0 libgrpc.so
	ln -sf libgrpc.so.6.0.0 libgrpc.so.6
	ln -sf libpng12.so.0.54.0 libpng12.so.0
	ln -sf libprotobuf.so.16.0.0 libprotobuf.so
	ln -sf libprotobuf.so.16.0.0 libprotobuf.so.16
	echo "done."
	printf "\nRemove unneeded symbols from files..."
	find ./ -maxdepth 1 -type f -exec strip -s {} 2>/dev/null \;
	echo "done."
	printf "\nRepack evelauncher-$elver.tar.gz..."
	cd ../
	rm evelauncher-$elver.tar.gz
	tar czf evelauncher-$elver.tar.gz evelauncher/
	rm -rf evelauncher/
	printf "done.\n\n"
}

get_dxvk() {
	if [ ! -r "./dxvk-$dvver.tar.gz" ] ;then
		printf "\nDownload dxvk-$dvver.tar.gz...\n\n"
		$dltool https://github.com/doitsujin/dxvk/releases/download/v$dvver/dxvk-$dvver.tar.gz
	fi
	rcsum="$(sha256sum ./dxvk-$dvver.tar.gz| cut -d' ' -f1)"
	if [ "$rcsum" != "$dvcsum" ] ;then
		printf "\n\nWarning: Checksum dxvk-$dvver.tar.gz mismatch, ignored.\n"
		rm ./dxvk-$dvver.tar.gz 2>/dev/null || true
	fi
}

check_req() {
	dltool=$(which curl 2>/dev/null || which wget 2>/dev/null  || true)
	case ${dltool##*/} in
		curl)	dltool="$dltool -L -O" ;;
		wget)	dltool="$dltool -nc" ;;
		*)	printf "\nError: curl or wget not found. One of them are needed for downloading sources."
			printf "\n       Please install curl or wget with your Package Manager.\n"
			printf "\nLeaving.\n\n"
			exit 0 ;;
	esac
	req="7z lsof "
	until [ -z "$req" ];do
		i=${req%% *}
		[ $(which $i &>/dev/null; echo $?) -ne 0 ] && mreq="$mreq$i\n"
		req=${req#* }
	done
	if [ ! -z $mreq ] ;then
		printf "\nError: Following requirements are missing:\n"
		printf "\n$mreq\n"
		read -p 'Install anyway? (y/N) ' key
		if [ "x$(echo $key | tr [:upper:] [:lower:])" != "xy" ] ;then
			printf "\nLeaving.\n\n"
			exit 0
		fi
	fi
}

prefix="/usr"
destdir="/opt/evesetup"
bindir="$destdir/bin"
libdir="$destdir/lib"
docdir="$destdir/doc"
qtver="5.12"
elver=""
elcsum=""
dvver=""
dvcsum=""
rcsum=""
key=""

if [ $(id -u) -ne 0 ] ;then
	printf "\nEVE Online Launcher Setup need root permissions.\n\n"
	exit 0
fi

if [ -d "$destdir" ] ;then
	printf "\n"
	read -p 'Remove EVE Online Launcher Setup? (Y/n) ' key
	if [ "x$(echo $key | tr [:upper:] [:lower:])" != "xn" ] ;then
		printf "\nRemoving...\n\n"
		bootstrap_remove
	fi
else
	printf "\n"
	read -p 'Install EVE Online Launcher Setup? (Y/n) ' key
	if [ "x$(echo $key | tr [:upper:] [:lower:])" != "xn" ] ;then
		printf "\nInstalling...\n"
		check_req
		build_lib
		get_dxvk
		bootstrap_install
		printf "\nYou can now start EVE Online Launcher and his Tools:\n\n"
		for cmd in *.desktop ;do
			oexec=$(sed -rn 's,^Exec=,,;s,.*/,,p' $cmd)
			[ ! "$oexec" = "evelauncher.sh" ] && printf " $oexec\t- $(sed -rn 's,^Comment=,,p' $cmd)\n"
		done
		printf "\n evelauncher.sh\t- EVE Online Launcher\n"
	fi
fi
printf "\nDone.\n\n"