#!/bin/sh

# AM INSTALL SCRIPT VERSION 3.5
APP=appimageupdatetool
SITE1="pkgforge-dev/AppImageUpdate"
SITE2="AppImage/AppImageUpdate"

# CREATE DIRECTORIES AND ADD REMOVER
[ -n "$APP" ] && mkdir -p "/opt/$APP/tmp" "/opt/$APP/icons" && cd "/opt/$APP/tmp" || exit 1
printf "#!/bin/sh\nrm -f /usr/local/bin/$APP\nrm -R -f /opt/$APP" > ../remove
printf '\n%s' "rm -f /usr/local/share/applications/$APP-AM.desktop" >> ../remove
chmod a+x ../remove || exit 1

# CHOOSE A VERSION
read -r -p "
 Choose which version of appimageupdatetool AppImage to use:

 1. Fork with rate-limit-bypass & misc QOL changes, it works
    on more distros than the official release (recommended)

    Source: https://github.com/pkgforge-dev/AppImageUpdate

 2. Official release

    Source: https://github.com/AppImage/AppImageUpdate

 Which version you choose (type a number and press ENTER)?" response
case "$response" in
	1) rm -f /opt/"$APP"/version
	UPDATER=1
	version=$(curl -Ls https://api.github.com/repos/"$SITE1"/releases | sed 's/[()",{} ]/\n/g' | grep -io 'https.*appimageupdatetool.*86_64.*mage$' | head -1)
	wget "$version"
	echo "$version" >> /opt/$APP/version;;
	2) rm -f /opt/"$APP"/version
	version=$(curl -Ls https://api.github.com/repos/"$SITE2"/releases | sed 's/[()",{} ]/\n/g' | grep -io 'https.*appimageupdatetool.*86_64.*mage$' | head -1)
	UPDATER=2
	wget "$version"
	echo "$version" >> /opt/$APP/version;;
	*) /opt/"$APP"/remove && exit;;
esac
cd ..
mv ./tmp/*mage ./"$APP"
rm -R -f ./tmp || exit 1
chmod a+x ./"$APP" || exit 1

# LINK
ln -s "/opt/$APP/$APP" "/usr/local/bin/$APP"

# SCRIPT TO UPDATE THE PROGRAM
cat >> ./AM-updater << 'EOF'
#!/bin/sh
set -u
APP=appimageupdatetool
if [ -z "$APP" ]; then exit 1; fi
version0=$(cat "/opt/$APP/version")
version=$(curl -Ls https://api.github.com/repos/$SITE/releases | sed 's/[()",{} ]/\n/g' | grep -io 'https.*appimageupdatetool.*86_64.*mage$' | head -1)
[ -n "$version" ] || { echo "Error getting link"; exit 1; }
if command -v appimageupdatetool >/dev/null 2>&1; then
	cd "/opt/$APP" || exit 1
	appimageupdatetool -Or ./"$APP" && chmod a+x ./"$APP" && echo "$version" > ./version && exit 0
fi
if [ "$version" != "$version0" ]; then
	mkdir "/opt/$APP/tmp" && cd "/opt/$APP/tmp" || exit 1
	notify-send "A new version of $APP is available, please wait"
	wget "$version" || exit 1
	# Use tar fx ./*tar* here for example in this line in case a compressed file is downloaded.
	cd ..
	mv --backup=t ./tmp/*mage ./"$APP"
	chmod a+x ./"$APP" || exit 1
	echo "$version" > ./version
	rm -R -f ./*zs-old ./*.part ./tmp ./*~
	notify-send "$APP is updated!"
else
	echo "Update not needed!"
fi
EOF
if [ "$UPDATER" = "1" ]; then
	sed -i 's#$SITE#pkgforge-dev/AppImageUpdate#g' /opt/"$APP"/AM-updater
elif [ "$UPDATER" = "2" ]; then
	sed -i 's#$SITE#AppImage/AppImageUpdate#g' /opt/"$APP"/AM-updater
fi
chmod a+x ./AM-updater || exit 1