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offlineimap-notify.sh
#!/bin/bash
usage="usage: $(basename "$0") [-hn] ACCOUNT
Check an offlineimap account's mail directory for new messages and trigger notification
where:
-h show this help text
ACCOUNT the offlineimap account name"
: ${1?"Usage: $0 ACCOUNT"}
while getopts ':hs:' option; do
case "$option" in
h) echo "$usage"
exit
;;
\?) printf "illegal option: -%s\n" "$OPTARG" >&2
echo "$usage" >&2
exit 1
;;
esac
done
function clean {
sed "s/^\[/\\\[/g" | sed "s/\"/'/g" | sed 's/\!/❕/g'
}
function extract_sender {
grep -o '^From: \(.*\)$' $1 | sed "s/^From: //g" | clean
}
function extract_subject {
grep -o '^Subject: \(.*\)$' $1 | sed "s/^Subject: //g" | perl -pe 'use MIME::Words(decode_mimewords); $_=decode_mimewords($_);' | clean
}
function offlineimap_notify {
account=$1
previousmessages=/tmp/offlineimap_${account}_messages
newcount=0
sender=''
subject=''
# run OfflineIMAP once, with quiet interface
# offlineimap -o -u quiet -a $account
maildirnew="$HOME/mail/$account/INBOX/new"
if [ ! -e "$previousmessages" ] ; then
touch "$previousmessages"
fi
# check if the mails weren't already seen/reported before
# and add them to a temporary list of previously seen/reported mails
for file in $maildirnew/*
do
if [ ! -f $file ] ; then
continue
fi
filename=$(basename "$file")
if grep -Fxq "$filename" "$previousmessages" ; then
: echo "seen"
else
echo "$filename" >> "$previousmessages"
newcount=$((newcount+1))
if [ -z "$sender" ] ; then
sender="`extract_sender $file`"
fi
if [ -z "$subject" ] ; then
subject=`extract_subject $file`
fi
fi
done
if [ $newcount -gt 1 ] ; then
title="$newcount new messages for $account 📬 "
subtitle=`echo -e "$sender and others"`
body=`echo -e "$subject"`
else
title="New message for $account ✉️"
subtitle=`echo -e "$sender"`
body=`echo -e "$subject"`
fi
if [ $newcount -gt 0 ]
then
# osascript -e 'display notification "'"$body"'" with title "'"$title"'" subtitle "'"$subtitle"'"'
terminal-notifier -title "${title}" -subtitle "${subtitle}" -message "$body" -sender 'org.gnu.Emacs'
fi
}
offlineimap_notify $1
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