import sys, ldap
from ceo import members, uwldap, terms, ldapi

def max_term(term1, term2):
    if terms.compare(term1, term2) > 0:
        return term1
    else:
        return term2

class ExpiredAccounts:
  help = '''
expiredaccounts [--email]

Displays a list of expired accounts. If --email is specified, expired account
owners will be emailed.
'''

  def main(self, args):
    send_email = False
    if len(args) == 1 and args[0] == '--email':
      sys.stderr.write("If you want to send an account expiration notice to " \
        "these users then type 'Yes, do this' and hit enter\n")
      if raw_input() == 'Yes, do this':
        send_email = True
    uwl = ldap.initialize(uwldap.uri())
    mlist = members.expired_accounts()
    for member in mlist.values():
      term = "f0000"
      term = reduce(max_term, member.get("term", []), term)
      term = reduce(max_term, member.get("nonMemberTerm", []), term)
      expiredfor = terms.delta(term, terms.current())

      if expiredfor <= 3:
        uid = member['uid'][0]
        name = member['cn'][0]
        email = None
        print '%s (expired for %d terms)' % (uid.ljust(12), expiredfor)
        if send_email:
          print "  sending mail to %s" % uid
          members.send_account_expired_email(name, uid)