nextApts

#!/bin/sh
# script to get all appointments in the next 24 hours

apts=$(calcurse -d 2 | grep -v -e '^$' -e '^[0-9]' ) # get apts from the next 2 days
n=$(calcurse -d 2 | grep -c -v -e '^$' -e '^[0-9]' ) # line length 
nh=0 #counter for hours/minutes 
nn=0 #counter for names
isBreak=false
# save all appts in arrays
for i in $(seq 1 "${n}"); do 
	if ${isBreak}
	then
		isBreak=false
		continue
	fi
	if [ $((i%2)) -eq 0 ]; then
		names[nn]=$(echo "${apts}" | sed -n "${i}"p)
		nn=$((nn+1))
	else 
		hcheck=$(echo "${apts}" | sed -n "${i}"p | cut -d' ' -f3 | cut -d: -f1)
		if [ "${hcheck}" = ".." ]
		then
			isBreak=true
			continue
		fi
		hours[nh]=${hcheck}
                while echo "${hours[${nh}]#0}" | grep -e '^0[0-9]+$' > /dev/null 2>&1
                do
		     hours[nh]=${hours[${nh}]#0}
                done
		minutes[nh]=$(echo "${apts}" | sed -n "${i}"p | cut -d' ' -f3 | cut -d: -f2)
                while echo "${minutes[${nh}]#0}" | grep -e '^0[0-9]*$' > /dev/null 2>&1
                do
		     minutes[nh]=${minutes[${nh}]#0}
                done
		nh=$((nh+1))
	fi
done 
cHour=$(date +%-H)
while echo "${cHour}" | grep -e '^0[0-9]+$' > /dev/null 2>&1
do
     cHour=${cHour#0}
done
cMin=$(date +%-M)
while echo "${cMin}" | grep -e '^0[0-9]+$' > /dev/null 2>&1
do
     cMin=${cMin#0}
done
#print next apts for day 1
n1=$(calcurse -d 1 | grep -c -e '- [0-9]' ) # length of day 1
for i in $(seq 0 $((n1-1))); do
	if [ "${hours[${i}]}" -gt "${cHour}" ]; then
		if [ "${minutes[${i}]}" -ge "${cMin}" ]; then
			printf "[%02d:%02d] ${names[${i}]}\n" $((hours[i]-cHour)) $((minutes[i]-cMin))
		else
			printf "[%02d:%02d] ${names[${i}]}\n" $((hours[i]-cHour-1)) $((60-cMin+minutes[i]))
		fi
	elif [ "${hours[${i}]}" -eq "${cHour}" ]; then
		if [ "${minutes[${i}]}" -gt "${cMin}" ]; then
			printf "[00:%02d]  ${names[${i}]}\n" $((minutes[i]-cMin))
		fi
	fi
done

#print next apts for day 2
for i in $(seq "${n1}" $((nh-1))); do
	if [ "${hours[${i}]}" -le "${cHour}" ]; then
		if [ "${minutes[${i}]}" -ge "${cMin}" ]; then
			printf "[%02d:%02d] ${names[${i}]}\n" $((24-cHour+hours[i])) $((minutes[i]-cMin))
		else
			printf "[%02d:%02d] ${names[${i}]}\n" $((24-cHour+hours[i]-1)) $((60-cMin+minutes[i]))
		fi
	fi
done
calcurse -t