#! /bin/bash

MY_DIR=$(dirname $0) #Used so that script will work no matter where the script folder is put.

#Changes selected screen  screen by replacing .png in /usr/share/remarkable/
function replacepng(){
	echo "choose a file you would like to replace $OLDPNG with:" 
	cd ~/Pictures/rMscreens
	select NEWPNG in $(ls *.png)
	do
		case $NEWPNG in
			*) break
			;;
		esac
	done
	echo "You selected $NEWPNG"
	echo ""
	echo "Are you sure you want to change $OLDPNG ?"
	select CHOICE in yes no
	do
		case $CHOICE in
			yes)
				scp $NEWPNG root@10.11.99.1:/tmp
				ssh root@10.11.99.1 /opt/bin/changescrn $OLDPNG /tmp/$NEWPNG #Calls 'changscrn' to replace the old screen with the new one
				echo "All done!"
				echo ""
				ssh root@10.11.99.1 rm /tmp/$NEWPNG #removes orginal .png file from device to save space.
				mainmenu
			;;
			no)
				mainmenu
			;;
			*)
				echo "Please choose 1 for yes or 2 for no" 
			;;
		esac
	done
}

#Restore default screens
function restoredefaults(){
	echo "Select a screen you'd like to restore to its default"
	select OLDPNG in batteryempty lowbattery overheating poweroff rebooting recovery splash starting suspended
	do
		scp ~/Pictures/rMscreens/$OLDPNG.png root@10.11.99.1:/tmp
		echo "Copied file to rM"
		ssh root@10.11.99.1 /opt/bin/changescrn $OLDPNG /tmp/$OLDPNG.png
		echo "restored $OLDPNG screen to default"
		echo ""
		mainmenu
	done 
	
}

#Main menu
function mainmenu(){
echo "Choose the screen you would like to replace or quit:"
select OLDPNG in batteryempty lowbattery overheating poweroff rebooting recovery splash starting suspended Restore_Defaults Quit
do
	case $OLDPNG in
		Restore_Defaults)
			restoredefaults
		;;
		Quit)
			exit
		;;
		batteryempty | lowbattery  | overheating | poweroff | rebooting | recovery | splash | starting | suspended)
		echo "You chose $OLDPNG"
		echo ""
		replacepng
		;;	
		*)
			echo "Please choose from available options"
			mainmenu
		;;
	esac
done 
}


#MAIN SCRIPT STARTS HERE
mainmenu