#!/bin/sh
set -e

if test -z "$SWAYSOCK" && pidof gnome-shell &> /dev/null
then
    exit 0
fi

test -z "$XDG_RUNTIME_DIR" &&
    export XDG_RUNTIME_DIR=/run/user/$(id -u)

die() {
    test "$?" = 0 ||
        notify-send "Failed to sync mail" "try unlocking your gpg key"
}
trap die EXIT

getnew() {
    pushd "$HOME/.local/share/mail/" >/dev/null

    find */INBOX*/new -type f |
        sed -E '/Duolingo|LBRY/d' |
        wc -l

    popd >/dev/null
}

OLD=$(getnew)

if test "$1" = "update" && ! pidof mbsync; then
    if ! ping -c3 {{@@ mail.personal.mail @@}} &> /dev/null
    then
        exit 0
    fi
    mbsync -a ||
    mbsync -a ||
    mbsync -a
fi

NEW=$(getnew)

if test "$NEW" -gt "$OLD"; then
    notify-send " New E-Mails!"
fi

echo $NEW | sed 's/^0$//'

caller=$(ps -o comm= $PPID)
if test "$caller" != "waybar"; then
    pidof waybar >/dev/null &&
        pkill -SIGRTMIN+4 waybar
fi

# vim:ft=sh