#!/usr/bin/env python

FATAL = 'checkmail: fatal: '

import os

def die(c,s1,s2):
  print s1 + s2
  os._exit(c)

import signal

def sigint_handler(sig,f):
  die(111,FATAL,'keyboard interrupt')

signal.signal(signal.SIGINT,sigint_handler)

def max(a,b):
  if (a < b):
    return b
  else:
    return a

import re 
import time

try:
  envhome = os.environ['HOME']
except KeyError:
  die(111,FATAL,'environment variable $HOME not found')

mdir = envhome + '/Maildir/'

if (False == os.path.exists(mdir)):
  die(111,FATAL,'Maildir not found')

latestmsg = -1 

for (root,dirlist,files) in os.walk(mdir):
  if (None != re.compile('\/new$').search(root)):
    numfiles = len(files)
    if (0 < numfiles):
      try:
        os.chdir(root)
      except OSError:
        die(111,FATAL,'chdir failed')
      for x in files:
        try:
          latestmsg = max(latestmsg,os.path.getmtime(x))
        except OSError:
          die(111,FATAL,'getmtime failed')
      if (1 == numfiles):
        msgcase = ''
      else:
        msgcase = 's'
      print '%d new msg%s in %s' % (numfiles,msgcase,root)

if (-1 == latestmsg):
  print 'No new messages.'
else:
  mtimestr = time.ctime(latestmsg)
  print 'Latest msg: ' + mtimestr