#!/bin/sh

function get_task_value {
	echo "$task_data" | grep "^$1" | sed -E "s/^$1 +//"
}

ids=$(task limit:none recur | grep -E '^ ?[[:digit:]].*[[:alpha:]].*[[:digit:]]$' | sed -E 's/^ ?([[:digit:]]+) .*/\1/')

excluded_ids=$(for id in $ids
	do
		task_data="$(task $id)"
		echo "$(get_task_value 'Parent task') $(get_task_value 'Description' | sed 's/ /_/g') $(get_task_value 'Due') $id"	 
	done | sort | rev | uniq -f3 | rev | sed -E 's/.* ([[:digit:]]+)$/\1/')

del_ids=$(for id in $excluded_ids $ids
	do
		echo $id
	done | sort | uniq -u)

if [ ! -z "$del_ids" -a "$del_ids" != " " ]
then
	{ echo 'all'; yes n; } | task $del_ids del
fi