#!/bin/sh

pgrep -u "$USER" >/dev/null || { echo "$USER not logged in; sync will not run."; exit ;}
pgrep -x mbsync >/dev/null && { echo "mbsync is already running." ; exit ;}
ping -q -c 1 1.1.1.1 > /dev/null || { echo "No internet connection detected."; exit ;}

DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/$(id -u)/bus
export DISPLAY=:0.0

syncandnotify() {
    acc="$(echo "$account" | sed "s/.*\///")"
    mbsync "$acc"
    new=$(find "$HOME/.local/share/mail/$acc/INBOX/new/" "$HOME/.local/share/mail/$acc/Inbox/new/" "$HOME/.local/share/mail/$acc/inbox/new/" -type f -newer "$HOME/.config/mutt/.mailsynclastrun" 2> /dev/null)
    newcount=$(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')
            notify-send --app-name="mutt-wizard" -i ~/Pictures/.icn/correo.png "New message in $acc" "$from: $subject" &
        done
    fi
}

if [ "$#" -eq "0" ]; then
    accounts="$(awk '/^Channel/ {print $2}' "$HOME/.mbsyncrc")"
else
    accounts=$*
fi

for account in $accounts
do
    syncandnotify &
done

wait
notmuch new 2>/dev/null

touch "$HOME/.config/mutt/.mailsynclastrun"