#!/bin/bash

# recognize destination of this script
script_path=$(dirname "$(readlink -f "$0")")

# set default path to user's desktop
#root_path="/home/$(whoami)/Desktop/"

# set default path to user's downloads folder
root_path="/home/$(whoami)/Downloads/"

stm_upload() {

	sleep 1;

	echo

	file_to_upload=$1

	if [ -f $file_to_upload ]; then
		st-flash --reset write $file_to_upload 0x8000000
		rm $file_to_upload
	fi
}

dfu_upload() {

	sleep 1;

	echo

	file_to_upload=$1

	if [ -f $file_to_upload ]; then
		dfu-util -a 0 -s 0x08000000:leave -D $file_to_upload
		rm $file_to_upload
	fi
}

inotifywait --format '%w%f' -m -r -e close_write $root_path | while IFS= read -r file; do

	# remove path to obtain relative path to $root_path
	path=$(realpath --relative-to="$root_path" $file)

	# does the file contain string "_NUCLEO_" in name
	if [[ $file == *"_NUCLEO_"* ]]; then
		# do not upload uncomplete file
		if [[ $file != *".crdownload"* ]]; then
			if [[ $file == *".bin"* ]]; then

				echo "file ready for upload: $path"
				sleep 0.1

				# is device supporting DFU?
				if [[ $file == *"NUCLEO_F042K6"* ]]; then
					dfu_upload $root_path/$path
				else
					stm_upload $root_path/$path
				fi
			fi
		fi
	fi
done