#!/bin/sh

# Configure the two things below for your MUA and the host being run.
IMAPHOST=linnode.donarmstrong.com
MUA=mutt

#set -x

# Don't check mail if ~/.nocheck exists and we're not running
# interactively.
if [ -z "$CRON" ] && [ -e ~/.nocheck ]; then
    exit 0;
fi;

if [ -z "$HOSTNAME" ]; then
    HOSTNAME="$(hostname)"
fi;

IONICE=""
if which ionice >/dev/null 2>&1; then
    IONICE="ionice -c 3"
fi;

# if we're not running under cron or there is a mailserver running
if [ -z "$CRON" ] || kill -0 `pgrep -U $(id -u) -x $MUA` 2>/dev/null; then
    # and we can ping the imap host
    if ping -q -c 3 $IMAPHOST >/dev/null 2>&1; then
	# source the ssh info if it exists
	if [ -e ~/.ssh/"ssh_agent_info_$HOSTNAME" ]; then
	    . ~/.ssh/"ssh_agent_info_$HOSTNAME" > /dev/null;
	fi;
	PID="$(pgrep -U $(id -u) offlineimap)";
	if [ -n "$PID" ]; then
	    # if offlineimap has been running for more than 20 minutes
	    if [ $(( $(date +'%s') - $(stat -c '%Y' /proc/$PID/cmdline) )) -gt 1200 ]; then
		kill "$PID" >/dev/null 2>&1 || true;
		sleep 5
		kill -0 "$PID" >/dev/null 2>&1 && kill -9 "$PID" >/dev/null 2>&1;
		PID="$(pgrep -U $(id -u) offlineimap)";
	    fi;
	fi;
	if [ -z "$PID" ]; then
	    if nice -n 19 ${IONICE} offlineimap -o -u Noninteractive.Basic 2>&1 |grep validity| \
		perl -ne 'my ($account,$list) = /UID validity problem for folder ([\w-]+)\.([\w-]+)/;
                      next unless defined $account and length $account;
                      qx(/home/don/bin/deletemailbox -a $account $list > /dev/null);'; then
	    # Clean the lists up too
		for account in bugs lists; do
		    find /home/don/Mail/$account -maxdepth 1 -mindepth 1 -type d \
			-exec sh -c 'test $(find "{}" -type f |wc -l) -eq 0' ';' \
			-printf '%f\000'|xargs -0 -rn 1 ~/bin/deletemailbox -a $account >/dev/null 2>&1;
		    find /home/don/Mail/$account -maxdepth 2 -mindepth 2 -iname 'new' \
			-type d -ctime +60 -printf '%h\n'|xargs -rn 1 basename|xargs \
			-rn 1 /home/don/bin/deletemailbox -a $account >/dev/null 2>&1;
		done;
	    fi;
            if which notmuch >/dev/null 2>&1; then
                nice -n 19 ${IONICE} notmuch new >/dev/null 2>&1;
            fi;
	fi;
    fi;
fi;