#!/bin/sh

APP=jq
SITE="jqlang/jq"

# CREATE DIRECTORIES
if [ -z "$APP" ]; then exit 1; fi
mkdir -p "/opt/$APP/tmp" "/opt/$APP/icons" && cd "/opt/$APP/tmp" || exit 1

# ADD THE REMOVER
echo "#!/bin/sh
rm -f /usr/local/bin/$APP
rm -R -f /opt/$APP" >> "/opt/$APP/remove"
chmod a+x "/opt/$APP/remove"

# DOWNLOAD AND PREPARE THE APP
# $version is also used for updates

version=$(curl -Ls https://api.github.com/repos/"$SITE"/releases | sed 's/[()",{}]/ /g; s/ /\n/g' | grep -o 'https.*linux.*amd64' | head -1)
wget "$version"
echo "$version" >> /opt/$APP/version
cd ..
mv ./tmp/jq* ./"$APP"
chmod a+x "/opt/$APP/$APP"
rm -R -f ./tmp

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

# SCRIPT TO UPDATE THE PROGRAM
cat >> "/opt/$APP/AM-updater" << 'EOF'
#!/bin/sh
APP=jq
SITE="jqlang/jq"
if [ -z "$APP" ]; then exit 1; fi
version0=$(cat "/opt/$APP/version")
version=$(curl -Ls https://api.github.com/repos/"$SITE"/releases | sed 's/[()",{}]/ /g; s/ /\n/g' | grep -o 'https.*linux.*amd64' | head -1)
if [ "$version" = "$version0" ]; then
	echo "Update not needed!" && exit 0
else
	notify-send "A new version of $APP is available, please wait"
	mkdir "/opt/$APP/tmp"
	cd "/opt/$APP/tmp" || exit 1
	wget "$version"
	if ls . | grep jq; then
		cd ..
  		if test -f ./tmp/*jq; then rm ./version
  		fi
  		echo "$version" >> ./version
  		mv --backup=t ./tmp/* ./"$APP"
  		chmod a+x "/opt/$APP/$APP"
  		rm -R -f ./tmp ./*~
	fi
	notify-send "$APP is updated!"
fi

EOF
chmod a+x "/opt/$APP/AM-updater"