#! /bin/bash

SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
CHCH_ICAL_SRC="https://cloud.chch.it/remote.php/dav/public-calendars/KVJE5OXYIY9B9V5C?export"
CHCH_ICAL="/var/www/chch_api/chch.ical"
WIKI_PATH="/var/www/chch/"
RAND="$(date +%s)$RANDOM$RANDOM$RANDOM"
CHCH_ICAL_TMP="/tmp/chch_$RAND.ical"
CHCH_ICAL_FAIL="/tmp/chch_ical_wget_failed"
CHCH_ICAL_FAIL_WARN_SENT="/tmp/chch_ical_wget_warned"
CHCH_ICAL_FAIL_WARN_DELAY=60 # miniutes

rm -rf /tmp/chch_*.ical
wget "$CHCH_ICAL_SRC" -O "$CHCH_ICAL_TMP" -q -T 45 -t 1
if [ $? -ne 0 ]; then
	if [ ! -f "$CHCH_ICAL_FAIL" ]; then
		touch "$CHCH_ICAL_FAIL"
	fi
	if [ ! -f "$CHCH_ICAL_FAIL_WARN_SENT" ] && test "$(find "$CHCH_ICAL_FAIL" -mmin +$CHCH_ICAL_FAIL_WARN_DELAY)"; then
		echo "ERROR: wget failed to download calendar" >&2
		touch "$CHCH_ICAL_FAIL_WARN_SENT"
	fi
else
	mv "$CHCH_ICAL_TMP" "$CHCH_ICAL" >/dev/null 2>&1
	if [ -f "$CHCH_ICAL_FAIL_WARN_SENT" ]; then
		echo "INFO: wget recovered from previous error" >&2
	fi
	rm -rf "$CHCH_ICAL_FAIL"
	rm -rf "$CHCH_ICAL_FAIL_WARN_SENT"
fi
rm -rf "$CHCH_ICAL_TMP"

# this requires -> icalparser from https://github.com/OzzyCzech/icalparser.git
head $CHCH_ICAL -n1 >/dev/null 2>&1 && php "$SCRIPT_DIR/include/chch_ical2mediawiki.php" "$CHCH_ICAL" 2>/dev/null | php "$WIKI_PATH/maintenance/edit.php" -m -b --no-rc -s "automatische Aktualisierung aus dem ical feed" "Aktuelle_ChCh-Termine" >/dev/null 2>&1
echo "Hauptseite" | php "$WIKI_PATH/maintenance/purgeList.php" --purge > /dev/null 2>&1