citadel

My dotfiles, scripts and nix configs
git clone git://jb55.com/citadel
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default.nix (3728B)

      1 extra:
      2 { config, lib, pkgs, ... }:
      3 let imap-notify = (import <jb55pkgs> {}).imap-notify;
      4     penv = pkgs.python3.withPackages (ps: with ps; [ dbus-python pygobject3 ]);
      5     awake-from-sleep-fetcher = pkgs.writeScript "awake-from-sleep-fetcher" ''
      6       #!${penv}/bin/python3 -u
      7 
      8       import dbus
      9       import datetime
     10       import gobject
     11       import os
     12       from dbus.mainloop.glib import DBusGMainLoop
     13 
     14       def start_home():
     15         print("starting email fetcher")
     16         os.system("systemctl restart --user email-fetcher")
     17 
     18       def handle_sleep_callback(sleeping):
     19         if not sleeping:
     20           # awoke from sleep
     21           start_home()
     22 
     23       DBusGMainLoop(set_as_default=True) # integrate into main loob
     24       bus = dbus.SystemBus()             # connect to dbus system wide
     25       bus.add_signal_receiver(           # defince the signal to listen to
     26           handle_sleep_callback,            # name of callback function
     27           'PrepareForSleep',                 # signal name
     28           'org.freedesktop.login1.Manager',   # interface
     29           'org.freedesktop.login1'            # bus name
     30       )
     31 
     32       loop = gobject.MainLoop()          # define mainloop
     33       loop.run()
     34     '';
     35 
     36     notifier = user: pass: cmd: host: extra.util.writeBash "notifier" ''
     37       set -e
     38 
     39       arg="${host}"
     40 
     41       # wait for connectivity
     42       until ${pkgs.libressl.nc}/bin/nc -w 1 -vz ${host} 12788 &>/dev/null; do sleep 1; done
     43 
     44       # run it once first in case we missed any from lost connectivity
     45       ${cmd} || :
     46       export IMAP_NOTIFY_USER=${user}
     47       export IMAP_NOTIFY_PASS=${pass}
     48       export IMAP_NOTIFY_CMD=${cmd}
     49       export IMAP_NOTIFY_HOST=${host}
     50       export IMAP_NOTIFY_TLS=no
     51       exec ${imap-notify}/bin/imap-notify
     52     '';
     53 in
     54 with extra; {
     55   systemd.user.services.email-fetcher = {
     56     enable = if extra.is-minimal then false else true;
     57     description = "email fetcher";
     58 
     59     environment = {
     60       IMAP_ALLOW_UNAUTHORIZED = "0";
     61       IMAP_NOTIFY_PORT = "12788";
     62     };
     63 
     64     path = with pkgs; [ eject util-linux muchsync notmuch bash openssh ];
     65 
     66     serviceConfig.Type = "simple";
     67     serviceConfig.Restart = "always";
     68     serviceConfig.ExecStart =
     69       let cmd = util.writeBash "email-fetcher" ''
     70             set -e
     71             export HOME=/home/jb55
     72             export DATABASEDIR=$HOME/mail/personal
     73 
     74             EVAR=/home/jb55/var/notify
     75             LAST_COUNT=$EVAR/last-email-count
     76 
     77             notify() {
     78               local c=$(notmuch --config /home/jb55/.notmuch-config-personal count 'tag:inbox and not tag:filed and not tag:noise')
     79               local lc=$c
     80               if [ -f $LAST_COUNT ]; then
     81                 lc=$(<$LAST_COUNT)
     82               fi
     83               echo "$c" > $LAST_COUNT
     84               if [ -f ~/var/notify/home ] && [ $c -ne $lc ]; then
     85                 echo "$c" > $EVAR/email-notify
     86                 ${pkgs.libnotify}/bin/notify-send -i email-new "You Got Mail (inbox $c)"
     87               fi
     88             }
     89 
     90             (
     91               flock -x -w 100 200 || exit 1
     92               if [ -f ~/var/notify/home ]; then
     93                 ${pkgs.libnotify}/bin/notify-send -i email-new "Fetching new mail..."
     94               fi
     95               muchsync -C /home/jb55/.notmuch-config-personal notmuch
     96               notify
     97             ) 200>/tmp/email-notify.lock
     98           '';
     99       in notifier "jb55@jb55.com" private.personal-email-pass cmd "10.100.0.7";
    100   };
    101 
    102   systemd.user.services.awake-from-sleep-fetcher = {
    103     enable = if extra.is-minimal then false else true;
    104     description = "";
    105 
    106     path = with pkgs; [ systemd ];
    107 
    108     wantedBy = [ "default.target" ];
    109     after    = [ "default.target" ];
    110 
    111     serviceConfig.ExecStart = "${awake-from-sleep-fetcher}";
    112   };
    113 
    114 }