#!/bin/sh
set -eu

[ "${1:-}" = -q ] && exec >/dev/null

VAR=$HOME/.var/offlineimap
LOCKFILE="$VAR/.cron.lock"
trapfn() { rm -f "$LOCKFILE"; trap - 0 1 2 3 4 5 6 7 8 10 11 12 13 14 15; }
trap trapfn 1 2 3 4 5 6 7 8 10 11 12 13 14 15
if ! lockfile -0 -r0 -l 3600 "$LOCKFILE" 2>/dev/null; then
  echo "E: offlineimap is already running." >&2
  exit 1
fi

trap trapfn 0

if ! test -t 0; then
  echo Renicing because we are not run interactively…
  renice 20 -p $$ >/dev/null
  ionice -c3 -p $$
fi

ret=0
/usr/bin/offlineimap "$@" || ret=$?

trapfn
exit $ret