# Copyright (C) 2002-2007 John Goerzen <jgoerzen@complete.org>
#               2010 Sebastian Spaeth <Sebastian@SSpaeth.de> and contributors
#
#    This program is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program; if not, write to the Free Software
#    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA

from offlineimap.repository.IMAP import IMAPRepository, MappedIMAPRepository
from offlineimap.repository.Gmail import GmailRepository
from offlineimap.repository.Maildir import MaildirRepository
from offlineimap.repository.LocalStatus import LocalStatusRepository

class Repository(object):
    """Abstract class that returns the correct Repository type
    instance based on 'account' and 'reqtype', e.g.  a
    class:`ImapRepository` instance."""

    def __new__(cls, account, reqtype):
        """
        :param account: :class:`Account`
        :param regtype: 'remote', 'local', or 'status'"""

        if reqtype == 'remote':
            name = account.getconf('remoterepository')
            # We don't support Maildirs on the remote side.
            typemap = {'IMAP': IMAPRepository,
                       'Gmail': GmailRepository}

        elif reqtype == 'local':
            name = account.getconf('localrepository')
            typemap = {'IMAP': MappedIMAPRepository,
                       'Maildir': MaildirRepository}

        elif reqtype == 'status':
            # create and return a LocalStatusRepository
            name = account.getconf('localrepository')
            return LocalStatusRepository(name, account)

        else:
            raise ValueError("Request type %s not supported" % reqtype)

        config = account.getconfig()
        repostype = config.get('Repository ' + name, 'type').strip()
        try:
            repo = typemap[repostype]
        except KeyError:
            raise ValueError("'%s' repository not supported for %s repositories"
                             "." % (repostype, reqtype))
        return repo(name, account)


    def __init__(self, account, reqtype):
        """Load the correct Repository type and return that. The
        __init__ of the corresponding Repository class will be
        executed instead of this stub

        :param account: :class:`Account`
        :param regtype: 'remote', 'local', or 'status'
        """
        pass