#!/bin/sh

if [ -n "$VERBOSE" ]; then
    set -x
fi;

cmd_exists () {
    if which "$1" >/dev/null 2>&1; then
        return 0;
    else
        return 1;
    fi;
}

# Configure the two things below for your MUA and the host being run.
IMAPHOST=$( awk -F= '/remotehost/{print $2}' ~/.offlineimaprc | head -n 1 )
MUAS="neomutt mutt mutt-ng"

# 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 cmd_exists "ionice"; then
    IONICE="ionice -c 3"
fi;

# if we are running under cron and there is no running MUA, exit
if [ -n "$CRON" ]; then
    RUNNING_MUA=0
    for MUA in $MUAS;  do 
        if kill -0 `pgrep -U $(id -u) -x $MUA` 2>/dev/null; then
            RUNNING_MUA=1
            break;
        fi;
    done;
    if [ "x$RUNNING_MUA" = "x0" ]; then
        exit 0;
    fi;
fi;

# 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
	nice -n 19 ${IONICE} offlineimap -o -u basic 2>&1 |grep validity| \
  	    perl -ne 'my ($account,$list) = /UID validity problem for folder ([\w-]+)\.([\w-]+)/;
                  next unless defined $account and length $account;
                  qx(/home/don/bin/deletemailbox -a Inbox $account.$list > /dev/null);';
    if cmd_exists "notmuch"; then
        nice -n 19 ${IONICE} notmuch new >/dev/null 2>&1;
    fi;
fi;