#!/bin/sh

# AM INSTALL SCRIPT VERSION 3.5
set -u
APP=i3
SITE="Samueru-sama/i3-AppImage"

# CREATE DIRECTORIES AND ADD REMOVER
[ -n "$APP" ] && mkdir -p "/opt/$APP/tmp" && cd "/opt/$APP/tmp" || exit 1
printf "#!/bin/sh\nset -e\nrm -f /usr/local/bin/$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

version=$(curl -Ls https://api.github.com/repos/"$SITE"/releases | sed 's/[()",{} ]/\n/g' | grep -oi 'https.*continuous.*i3.*86_64.*mage$' | head -1)
wget "$version" || exit 1
#wget "$version.zsync" 2> /dev/null # Comment out this line if you want to use zsync
# Use tar fx ./*tar* here for example in this line in case a compressed file is downloaded.
cd ..
mv ./tmp/*mage ./"$APP"
mv ./tmp/*.zsync ./"$APP".zsync 2>/dev/null
rm -R -f ./tmp || exit 1
echo "$version" > ./version
chmod a+x ./"$APP" || exit 1

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

# SCRIPT TO UPDATE THE PROGRAM
cat >> ./AM-updater << 'EOF'
#!/bin/sh
APP=i3
SITE="Samueru-sama/i3-AppImage"
if [ -z "$APP" ]; then exit 1; fi
version0=$(cat "/opt/$APP/version")
version=$(curl -Ls https://api.github.com/repos/"$SITE"/releases | sed 's/[()",{} ]/\n/g' | grep -oi 'https.*continuous.*i3.*86_64.*mage$' | head -1)
[ -n "$version" ] || { echo "Error getting link"; exit 1; }
if [ "$version" != "$version0" ]; then
	notify-send "A new version of $APP is available, please wait"
	mkdir "/opt/$APP/tmp" && cd "/opt/$APP/tmp" || exit 1
	wget "$version" || exit 1
	cd ..
	mv --backup=t ./tmp/*"$APP"* ./"$APP" || exit 1
	echo "$version" > ./version
	rm -R -f ./tmp ./*~
	chmod a+x ./"$APP" || exit 1
	notify-send "$APP is updated!"
else
	echo "Update not needed!"
fi
EOF
chmod a+x ./AM-updater || exit 1