#!/bin/sh

APP=zenity
SITE="Samueru-sama/Zenity-GTK3-AppImage"

# 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/share/applications/AM-$APP.desktop /usr/local/bin/$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=$(curl -Ls https://api.github.com/repos/Samueru-sama/Zenity-GTK3-AppImage/releases | jq '.' | grep browser_download_url | grep -i appimage | cut -d '"' -f 4 | head -1)
wget "$version"
wget "$version.zsync" 2> /dev/null
echo "$version" >> /opt/$APP/version
# Use tar fx ./*tar* for example in this line in case a compressed file is downloaded.
cd ..
mv ./tmp/*mage ./"$APP"
mv ./tmp/*.zsync ./"$APP".zsync 2> /dev/null
chmod a+x "/opt/$APP/$APP"
rm -R -f ./tmp

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

# SCRIPT TO UPDATE THE PROGRAM
cat >> "/opt/$APP/AM-updater" << 'EOF'
#!/bin/sh
APP=zenity
SITE="Samueru-sama/Zenity-GTK3-AppImage"
if [ -z "$APP" ]; then exit 1; fi
version0=$(cat "/opt/$APP/version")
version=$(curl -Ls https://api.github.com/repos/Samueru-sama/Zenity-GTK3-AppImage/releases | jq '.' | grep browser_download_url | grep -i appimage | cut -d '"' -f 4 | head -1)
if test -f "/opt/$APP/*.zsync"; then
	mkdir "/opt/$APP/tmp"
	cd "/opt/$APP/tmp" || exit 1
	wget "$version.zsync" 2> /dev/null
	cd ..
	mv ./tmp/*.zsync ./"$APP".zsync
	rm -R -f ./tmp
	zsync "/opt/$APP/$APP.zsync"
	rm -R -f "/opt/$APP/*zs-old" "/opt/$APP/*.part"
	chmod a+x /opt/$APP/$APP
	if [ "$version" != "$version0" ]; then
		rm -f /opt/$APP/version
		echo "$version" >> /opt/$APP/version
	fi
else
	if [ "$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 mage; then
			
			cd ..
			
	  		if test -f ./tmp/*mage; 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 "$APP is updated!"
	fi
fi
EOF
chmod a+x "/opt/$APP/AM-updater"

# LAUNCHER & ICON
cd "/opt/$APP" || exit 1
./"$APP" --appimage-extract .DirIcon 1>/dev/null && mv ./squashfs-root/.DirIcon ./DirIcon
./"$APP" --appimage-extract *.desktop 1>/dev/null && mv ./squashfs-root/*.desktop ./"$APP".desktop
./"$APP" --appimage-extract share/applications/*.desktop 1>/dev/null && mv ./squashfs-root/share/applications/*.desktop ./"$APP".desktop
./"$APP" --appimage-extract usr/share/applications/*.desktop 1>/dev/null && mv ./squashfs-root/usr/share/applications/*.desktop ./"$APP".desktop
if [ -L ./DirIcon ]; then
	LINKPATH=$(readlink ./DirIcon)
	./"$APP" --appimage-extract "$LINKPATH" && mv ./squashfs-root/"$LINKPATH" ./DirIcon
fi
sed -i "s#Exec=[^ ]*#Exec=$APP#g; s#Icon=.*#Icon=/opt/$APP/icons/$APP#g" ./"$APP".desktop
mv ./"$APP".desktop /usr/share/applications/AM-"$APP".desktop && mv ./DirIcon ./icons/"$APP" 2>/dev/null
rm -R -f ./squashfs-root