tel-todo

#!/usr/bin/env bash
# to-do list manager for TEL
# by @SealyJ - github.com/sealedjoy
version=0.2
todolist=~/.tel/data/todo
option="${1}" 
[[ -e $todolist ]] || echo "Manage your notes list with the 'tel-todo' command\nEnjoy TEL updates" > ${todolist}  #if no list make a new one
if [ -z "$1" ] ; then
	printf "\e[33;5;2m To Do\e[m:\n"
	n=1
	IFS='\n';while read line; do
	# reading each line
	echo -e " $n \e[3m$line\e[0m"
	n=$((n+1))
	done < $todolist

else

	case ${option} in 
		-v | --version)
			printf "\e[33;5;2m To Do\e[m: version: $version"
			exit 0
		;;
		-h | --help)
			echo "tel-todo [OPTION] [INPUT]
		'$> tel-todo'            = show to-do list
		'$> tel-todo free willy' = add free willy to your to-do list
		'$> tel-todo -h'         = show this help menu
		'$> tel-todo -v'         = show version info
		'$> tel-todo -e'         = open list in $EDITOR
		'$> tel-todo -c'	 = clear entire list
		'$> tel-todo -r'       	 = remove the most recent line
		'$> tel-todo -r 3'       = remove line #3
		'$> tel-todo -r 1 7 3'   = remove lines #1, 7 and 3 "
		;; 
		-c | --clear)
			printf "\e[33;5;2m To Do:\e[m Are you sure you want to clear the whole list? y/N : "
			read confirm
			if [ "$confirm" == "y" ] || [ "$confirm" == "Y" ] ; then
				> $todolist
				printf "\e[33;5;2m To Do:\e[m " ; echo "Cleared the list of entries"
			else
				printf "\e[33;5;2m To Do:\e[m " ; echo "Cancelled clearing the list"
			fi	
				;;
		-r | --remove)
		if [ -z "$2" ] ; then #if $3 etc then also remove 
				printf "\e[33;5;2m To Do:\e[m "
				echo "Removed the most recent line from the list"
				sed -i '$d' $todolist
				exit 0
		else
			shift

			# define the input array
			#arr=(12345_34 5_32134 8_123 13_1234)

			# generate a sorted version
			sorted=( )
			while IFS= read -r item; do
			  sorted+=( "$item" )
			done < <(printf '%s\n' "${@}" | sort -r -g)
			unset IFS
			#echo "sorted = ${sorted[@]}"
			printf "\e[33;5;2m To Do:\e[m " ;echo -n "Removing lines..."
			for delete_number in "${sorted[@]}"
			do
				echo -ne "#${delete_number} "
				sed_format="${delete_number}d"
				sed -i "$sed_format" $todolist
			done
		fi
		;;
		-e | --edit)
			printf "\e[33;5;2m To Do:\e[m "
			echo "Opening in $EDITOR"
			$EDITOR $todolist
			;; 
		*)  
		printf "\e[33;5;2m To Do:\e[m "
		echo "$@" >> $todolist
		echo -e "Added \e[3m'$@'\e[0m to your list"
		exit 0 
		;;
	esac 
fi