offlineimap-notify-send

#!/usr/bin/env bash

# ./offlineimap-notify-send
#
# depends: perl, notify-send
#
# cronjob:
#   * * * * * XDG_RUNTIME_DIR=/run/user/$(id -u) /home/qbbr/bin/offlineimap-notify-send
#
# author: @qbbr

MAIL_DIR="${HOME}/Mail"
PREV_MSG="/tmp/offlineimap-prev-msg"
NEWMAIL_ICON="/usr/share/icons/Numix/32/actions/mail-message-new.svg"

clean() {
	# replace <>, its tag for dunst
	sed 's/</(/g' | sed 's/>/)/g'
}

getFrom() {
	grep -o '^From: \(.*\)$' ${1} | sed 's/^From: //g' | clean
}

getSubject() {
	grep -o '^Subject: \(.*\)$' ${1} | sed 's/^Subject: //g' | perl -pe 'use utf8;use Encode;binmode(STDOUT,":utf8");$_=Encode::decode("MIME-Header",$_);' | clean
}

checkAccDir() {
	local ACC=${1}
	local NEW_DIR="${MAIL_DIR}/${acc}/INBOX/new"
	local PREV_MSG_FILE="${PREV_MSG}-${acc}"

	if [[ ! -f ${PREV_MSG_FILE} ]]; then
		touch "${PREV_MSG_FILE}"
	fi

	#echo "Checking: ${acc} ..."
	for file in ${NEW_DIR}/*; do
		if [[ ! -f ${file} ]] ; then
			continue
		fi

		filename=${file##*/}

		if ! grep -Fxq "${filename}" "${PREV_MSG_FILE}"; then
			echo "${filename}" >> "${PREV_MSG_FILE}"
			from=$(getFrom ${file})
			subject=$(getSubject ${file})

			notify-send -i "${NEWMAIL_ICON}" -a "to acc '${ACC}'" "from '${from}'" "${subject}"  &
		fi
	done
}

# multi acc check
for i in ${MAIL_DIR}/*; do
	acc="${i##*/}"
	# skip nn _ dir, its mutt symlinks
	if [[ "${acc}" != "_" ]]; then
		checkAccDir ${acc}
	fi
done