#!/usr/bin/env sh

pgrep -x mbsync >/dev/null && exit
ping -q -c 1 1.1.1.1 >/dev/null || exit

DATA="${XDG_DATA_HOME:-$HOME/.local/share}"
CONFIG="${XDG_CONFIG_HOME:-$HOME/.config}"

ICON="$HOME/img/.icn/App_Mail.svg"

syncandnotify() {
	acc="$(echo "$account" | sed "s/.*\///")"
	mbsync -c "$CONFIG"/isync/mbsyncrc "$acc"
	new=$(find "$DATA/mail/$acc/INBOX/new/" "$DATA/mail/$acc/Inbox/new/" "$DATA/mail/$acc/inbox/new/" -type f -newer "$CONFIG/neomutt/.mailsynclastrun" 2>/dev/null)
	newcount=$(echo "$new" | sed '/^\s*$/d' | wc -l)
	if [ "$newcount" -gt "0" ]; then
		for file in $new; do
			# Extract subject and sender from mail.
			from=$(awk '/^From: / && ++n ==1,/^\<.*\>:/' "$file" | perl -CS -MEncode -ne 'print decode("MIME-Header", $_)' | awk '{ $1=""; if (NF>=3)$NF=""; print $0 }' | sed 's/^[[:blank:]]*[\"'\''\<]*//;s/[\"'\''\>]*[[:blank:]]*$//')
			subject=$(awk '/^Subject: / && ++n == 1,/^\<.*\>: / && ++i == 2' "$file" | head -n-1 | perl -CS -MEncode -ne 'print decode("MIME-Header", $_)' | sed 's/^Subject: //' | sed 's/^{[[:blank:]]*[\"'\''\<]*//;s/[\"'\''\>]*[[:blank:]]*$//' | tr -d '\n')

			if [ -n "$DISPLAY" ]; then
				notify-send --app-name="neomutt" -i "$ICON" "Mensaje nuevo para $acc" "$from: $subject" &
			fi
		done
	fi
}

if [ "$#" -eq "0" ]; then
	accounts="$(awk '/^Channel/ {print $2}' "$CONFIG/isync/mbsyncrc")"
else
	for arg in "$@"; do
		[ "${arg%${arg#?}}" = '-' ] && opts="${opts:+${opts} }${arg}" && shift 1
	done
	accounts=$*
fi

for account in $accounts; do
	syncandnotify &
done

wait
notmuch new 2>/dev/null

touch "$CONFIG/neomutt/.mailsynclastrun"