#!/bin/sh

# Lists events happening in a specific time range.
# Recurring events are listed at most once, and only if their first occurrence
# is in the range.
#
# The events are read from the following files in the /home/sebastiano/.local/share/sdep folder:
#	once: events that only happen once; full date needs to be specified
#	daily: events that happen every day; only specify the time in HH:MM format
#	weekly: only specify Weekday + time
#	monthly: only specify day of the month + time

# This script uses relies on the non-portable -d option of GNU date.

# Usage: sdep-list [today|tomorrow|week|nextweek|past|future]
# No options = all

from=""
to=""
w="%d %b %H:%M"

case $1 in
	today)
		from="$(date +%Y-%m-%d) 0:00"
		to="$(date +%Y-%m-%d) 23:59"
		w="%H:%M"
		;;
	tomorrow)
		from="$(date -d tomorrow +%Y-%m-%d) 0:00"
		to="$(date -d tomorrow +%Y-%m-%d) 23:59"
		w="%H:%M"
		;;
	week)
		from="$(date -d 'last monday' +%Y-%m-%d) 0:00"
		to="$(date -d sunday +%Y-%m-%d) 23:59"
		w="%a %H:%M"
		;;
	nextweek)
		from="$(date -d 'next monday' +%Y-%m-%d) 0:00"
		to="$(date -d 'next monday + 6 days' +%Y-%m-%d) 23:59"
		w="%a %H:%M"
		;;
	past)
		to="$(date +'%Y-%m-%d %H:%M')"
		;;
	future)
		from="$(date +'%Y-%m-%d %H:%M')"
		;;
	*)
		;;
esac

tempfile=$(mktemp)

cat "/home/sebastiano/.local/share/sdep/once" > "$tempfile"
sed "s/^/$(date +%Y-%m-%d) /" <"/home/sebastiano/.local/share/sdep/daily" | >> "$tempfile"
while read line; do
	weekday=$(echo "$line" | sed "s/ .*$//")
	echo "$line" | sed "s/^[ ]*[^ ]* /$(date -d $weekday +%Y-%m-%d) /"
done <"/home/sebastiano/.local/share/sdep/weekly" >> "$tempfile"
sed "s/^[ ]*/$(date +%Y-%m-)/" <"/home/sebastiano/.local/share/sdep/daily" >> "$tempfile"

sdep -w "$w" -f "$from" -t "$to" <"$tempfile"

rm "$tempfile"