#!/usr/bin/env perl
use 5.016;
use strict;
use warnings;

use POSIX 'mkfifo';

my ($pw_pipe, $pid);

sub cleanup {
    unlink($pw_pipe) if $pw_pipe;
    kill KILL => $pid if $pid;
}

$SIG{INT} = $SIG{TERM} = sub { cleanup; exit };
END { cleanup }

$pw_pipe = "/run/user/$>/mbsyncloop";
mkfifo($pw_pipe, 0700) or die "couldn't create $pw_pipe";

my $pw = `rbw get mail.tozt.net doy\@tozt.net`;

$pid = fork;
die unless defined $pid;
if (!$pid) {
    $SIG{PIPE} = sub {};
    while (1) {
        open my $fh, '>', $pw_pipe or die "couldn't open $pw_pipe";
        $fh->print("$pw\n");
        close $fh;
    }
    exit;
}

my $last_all = 0;
while (1) {
    my $now = time;

    my $channel;
    if ($now - $last_all > 15 * 60) {
        $last_all = $now;
        $channel = "all";
    }
    else {
        $channel = "priority";
    }

    system("mbsync -c ~/.mbsyncloop $channel") and last;
    system("notmuch new | grep -v '^No new mail\.\$'");
    sleep 60 - (time - $now);
}