todo

#! /bin/bash

source "kv-bash"

# Initialize ID
COUNT=`kvget count`
if [[ -z $COUNT ]]
then
    kvset count 1
fi

# Add thing with a unique ID
function add_thing() {
    thing_to_add="$@"
    id=`kvget count`
    kvset $id "$thing_to_add"
    let "id+=1"
    kvset count $id
}

# Delete thing based on ID
function del_thing() {
    echo "What've you done, ol' (wo)man?"
    echo "-------"
    kvlist
    echo "-------"
    read ID
		for idn in $ID; do
    	kvdel $idn
		done
}

# Reorder
function reorder_things() {
    id=1
    for i in "$KV_USER_DIR/"*; do
        if [ -f "$i" ]; then
            key="$(basename "$i")"
            value=$(kvget "$key")
            if((key!= "count"))
            then
                 kvdel $key 
                 kvset $id "$value"
                 let "id+=1"
             fi
        fi
		done 
    kvset count $id
}

function show_help() {
    echo "This is what I can do: "
    echo "todo add <task> : Adds your task along with a Unique ID"
		echo "todo upd: Asks for the unique ID and helps you update your task. White space will keep the task as it is"
    echo "todo del: Asks for the unique ID of your task and removes it"
    echo "todo: Displays your tasks"
    echo "todo clear: Clears your tasks"
}

function update {
		kvlist &>/dev/null
		if [ $? = 6 ] ; then
			echo "Add a task before using the update command" 
		else
			echo -n "Task(s) to update: "
			read ID
			for idn in $ID; do
				echo -n "Task $idn should say: "
				read newtask
					if [ -n "$newtask" ]; then
						kvset $idn "$newtask"
					else
						echo "Task $idn will not be updated"
					fi
			done
			echo ""
			echo "Updated list:"
			kvlist
		fi
}

if(($# > 0))
then
  case $1 in
    add)
        shift
        add_thing $@
        exit 0
        ;;
		upd)
				update
				exit 0
				;;
    del)
        del_thing
        reorder_things
        exit 0
        ;;
    help)
        show_help
        exit 0
        ;;
    clear)
        kvclear
        exit 0
        ;;

    *)
        echo "Invalid option: $1" >&2
        exit 1
        ;;
   esac
else
 kvlist
fi