#!/bin/bash
set -e

WIREGUARD_STATUS_CACHE_REFRESH_INTERVAL=${WIREGUARD_STATUS_CACHE_REFRESH_INTERVAL:-60}

case "$WIREGUARD_STATUS_CACHE_REFRESH_INTERVAL" in
    30|60|150|300)
        ;;
    *)
        echo "Error: Invalid WIREGUARD_STATUS_CACHE_REFRESH_INTERVAL value: $WIREGUARD_STATUS_CACHE_REFRESH_INTERVAL. Allowed values are 30, 60, 150, 300."
        exit 1
        ;;
esac

echo "Starting cron with WIREGUARD_STATUS_CACHE_REFRESH_INTERVAL=$WIREGUARD_STATUS_CACHE_REFRESH_INTERVAL"

# Create cron tasks
cat <<EOF > /etc/cron.d/cron_tasks
*/15 * * * * root sleep 20  ; /cron_runner.sh check_updates                >> /var/log/cron.log 2>&1
*/10 * * * * root sleep 15  ; /cron_runner.sh update_peer_latest_handshake >> /var/log/cron.log 2>&1
* * * * *    root sleep 10  ; /cron_runner.sh peer_scheduler               >> /var/log/cron.log 2>&1
* * * * *    root sleep 30  ; /cron_runner.sh calculate_peer_schedules     >> /var/log/cron.log 2>&1
EOF

CMD="echo -n cron_refresh_wireguard_status_cache ; /cron_runner.sh refresh_wireguard_status_cache >> /var/log/cron.log 2>&1"

if [ "$WIREGUARD_STATUS_CACHE_REFRESH_INTERVAL" -eq 30 ]; then
    echo "* * * * *    root             $CMD" >> /etc/cron.d/cron_tasks
    echo "* * * * *    root sleep 30  ; $CMD" >> /etc/cron.d/cron_tasks
elif [ "$WIREGUARD_STATUS_CACHE_REFRESH_INTERVAL" -eq 60 ]; then
    echo "* * * * *    root             $CMD" >> /etc/cron.d/cron_tasks
elif [ "$WIREGUARD_STATUS_CACHE_REFRESH_INTERVAL" -eq 150 ]; then
    echo "*/5 * * * *  root             $CMD" >> /etc/cron.d/cron_tasks
    echo "*/5 * * * *  root sleep 150 ; $CMD" >> /etc/cron.d/cron_tasks
elif [ "$WIREGUARD_STATUS_CACHE_REFRESH_INTERVAL" -eq 300 ]; then
    echo "*/5 * * * *  root             $CMD" >> /etc/cron.d/cron_tasks
fi

chmod 0644 /etc/cron.d/cron_tasks

echo > /var/log/cron.log
cron
tail -n 0 -F /var/log/cron.log