#!/bin/bash
# Author : Ismael Barros² <ismael@barros2.org>
# License : BSD http://en.wikipedia.org/wiki/BSD_license

pg4l_dir=$(dirname $(readlink -f $0))
. "$pg4l_dir/util.sh"

OIFS=$IFS
NIFS=$'\n'

[ -z "$*" ] && {
	echo "Usage: "
	echo "  $0 <lgp_installer.run> [options]"
	echo "Options:"
	echo "  --skip-extract: Skip extract of the makeself package"
	echo "  --skip-cleanup: Skip cleanup of temporal directories"
	echo "  --skip-appimage: Skip creation of AppImage"
	echo "  --no-lgp-unpacker: Don't use nix installer to extract the package data"
	exit
}

EXTRACT=1
CLEANUP=1
APPIMAGE=1
USE_NIX_UNPACKER=1

for i in $@; do
        case $i in
                --skip-extract) EXTRACT=; shift ;;
                --skip-cleanup) CLEANUP=; shift ;;
                --skip-appimage) APPIMAGE=; shift ;;
                --lgp-unpacker) USE_NIX_UNPACKER=; shift ;;
		*) pkg=$i; shift ;;
	esac
done

[ -n "$pkg" ] || die "No lgp installer specified"

target="$PWD/${pkg}_uncompressed"
appDirPath="$PWD/${pkg}.AppDir"

if [ "$USE_NIX_UNPACKER" ]; then
	if [ $EXTRACT ]; then
		echo "Installing $pkg on $appDirPath ..."
		sh "$pkg" -u --accept-license -d "$appDirPath" || die "Could not extract package"
	fi

	cd "$appDirPath" || exit 1

	# Find package name and version
	uninstallScript="$(find -iname uninstall.sh)"
	packageName=$(desktopFile_getParameter "$uninstallScript" PROGNAME)
	packageVersion=$(desktopFile_getParameter "$uninstallScript" PROGVER)
else
	if [ $EXTRACT ]; then
		sh "$pkg" --noexec --target "$target" || die "Could not unpack package"
	fi

	cd "$target" || exit 1

	configFile="$(find -iname config.lua)"
	[ -n "$configFile" ] || die "Could not find config file"

	# Find package name and version
	packageName=$(desktopFile_getParameter ??? "$configFile")
	packageVersion=$(desktopFile_getParameter ??? "$configFile")

	mkdir -p "$appDirPath"

	for i in instarchive_all instarchive_all_x86; do
		echo "Unpacking file '$i' ..."
		tar -xJvf "$i" -C "$appDirPath" || die "Could not extract $i" || die
	done
fi

cd "$appDirPath" || exit 1

[ -n "$packageName" ] || die "Could not find package name"
[ -n "$packageVersion" ] || die "Could not find package version"
echo "Package: $packageName $packageVersion"

desktopFile="$(find -iname "*.desktop" | grep -v AppRun.desktop | grep -v Manual | head -n1)"
echo $desktopFile
[ -n "$desktopFile" ] || die "Could not find desktop file"

binFilename=$(desktopFile_getParameter "$desktopFile" Exec)
[ -n "$binFilename" ] && binFilename=$(find -name $(basename $binFilename))
[ -n "$binFilename" ] || die "Could not find binary name"

iconPath=$(desktopFile_getParameter "$desktopFile" Icon)
[ -n "$iconPath" ] || die "Could not find icon path"


convert -resize 32x "$iconPath" "$appDirPath"/AppRun.png || die "Could not copy icon"
[ -f "AppRun-0.png" ] && {
	mv -v AppRun-0.png AppRun.png
	rm -v AppRun-?.png
}
optipng "$appDirPath"/AppRun.png >/dev/null


cd "$appDirPath"
cp $pg4l_dir/data/AppRun.desktop .
cp $pg4l_dir/util.sh .
Suffix=-nix
desktopFile_setParameter "AppRun.desktop" "Name" "$packageName r1$Suffix"
desktopFile_setParameter "AppRun.desktop" "X-AppImage-Version" "$packageVersion"
desktopFile_setParameter "AppRun.desktop" "X-AppImage-Release" "1"
desktopFile_setParameter "AppRun.desktop" "X-AppImage-SourcePackages" "$(basename "$pkg")"
desktopFile_setParameter "AppRun.desktop" "X-AppImage-Tags" "NIX"

echo "Creating AppRun with Exec='$binFilename'..."

echo '#!/bin/bash' > AppRun
echo 'cd $(dirname "$(readlink -f "$0")")' >> AppRun
#for i in $(for i in $(find -iname *.so*); do dirname "$i"; done | sort | uniq); do
#	echo "export LD_LIBRARY_PATH=\$LD_LIBRARY_PATH:$i" >> AppRun	
#done
echo "./$binFilename" >> AppRun
chmod +x AppRun

if [ $APPIMAGE ]; then
	$pg4l_dir/buildAppImage || die "Could not build AppImage"
fi

if [ $CLEANUP ]; then
	echo "Removing $target"
	rm -rf "$target"
	echo "Removing $appDirPath"
	rm -rf "$appDirPath"
fi