"""Collection of functions for mass IMAP server manipulation"""
import imaplib
import logging
import re

SERVER = 'intranator.m.i2n'
USERNAME = 'FIXME'
PASSWORD = 'FIXME'
ANNOTATION_SHARED_SEEN = '"/vendor/cmu/cyrus-imapd/sharedseen"'

MAILBOX_RESP = re.compile(r'\((?P<flags>.*?)\) "(?P<delimiter>.*)" (?P<name>.*)')

# imaplib.Debug = 5

class ImapAction:
    """Class for mass IMAP manipulation"""

    def __init__(self, server, username, password):
        self.mail_con = None
        self.mailboxes = None

        # connect to server
        try:
            self.mail_con = imaplib.IMAP4(server)
        except Exception as ex:
            raise UserWarning("Could not connect to host %s: %s" % (server, ex))

        # log in
        try:
            self.mail_con.login(username, password)
            logging.info("Logged in as %s.", username)
        except:
            self.logged_in = False
            raise UserWarning("Could not log in as user " + username)
        self.logged_in = True

        # list mailboxes
        try:
            _result, self.mailboxes = self.mail_con.list()
        except (self.mail_con.error):
            raise UserWarning("Could not retrieve mailboxes for user " + username)

    def mass_set_group_rights(self, identifier, rights):
        """Mass set ACL rights on mailboxes"""
        for raw_mailbox in self.mailboxes:
            mailbox = MAILBOX_RESP.match(raw_mailbox.decode('iso-8859-1')).groups()[2]
            if not mailbox.startswith('\"INBOX'):
                print('Skipping mailbox %s' % mailbox)
                continue
            print('Modifying ACL for mailbox %s' % mailbox)

            self.mail_con.setacl(mailbox, identifier, rights)

    def mass_set_shared_seen(self):
        """Enable shared seen state on all mailboxes"""
        for raw_mailbox in self.mailboxes:
            mailbox = MAILBOX_RESP.match(raw_mailbox.decode('iso-8859-1')).groups()[2]
            if not mailbox.startswith('\"INBOX'):
                print('Skipping mailbox %s' % mailbox)
                continue
            print('Setting sharedseen annotation on mailbox %s' % mailbox)

            self.mail_con.setannotation(mailbox, ANNOTATION_SHARED_SEEN, '("value.shared" "true")')

    def list_sharedseen_state(self):
        """List shared seen state on all mailboxes"""
        for raw_mailbox in self.mailboxes:
            mailbox = MAILBOX_RESP.match(raw_mailbox.decode('iso-8859-1')).groups()[2]
            if not mailbox.startswith('\"INBOX'):
                print('Skipping mailbox %s' % mailbox)
                continue

            raw_annotations = self.mail_con.getannotation(mailbox, ANNOTATION_SHARED_SEEN, '"value.shared"')

            # Hack to parse annotation result
            sharedseen_enabled = False
            if str(raw_annotations[1]).find('("value.shared" "true")') != -1:
                sharedseen_enabled = True

            print('sharedseen state on mailbox %s: %s' % (mailbox, sharedseen_enabled))

def main():
    """Main function"""
    imap = ImapAction(SERVER, USERNAME, PASSWORD)

    imap.mass_set_group_rights("group:infokonto", "lrswipcd")
    imap.mass_set_shared_seen()

    imap.list_sharedseen_state()

if(__name__ == "__main__"):
    main()