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# Copyright (C) 2010, 2011 Sebastian Thiel (byronimo@gmail.com) and contributors
#
# This module is part of GitDB and is released under
# the New BSD License: http://www.opensource.org/licenses/bsd-license.php
"""Implement a transport compatible database which sends objects using the git protocol"""

from git.db.interface import ( TransportDB, 
                                PushInfo,
                                FetchInfo,
                                RefSpec )

from git.refs.remote import RemoteReference
from git.remote import Remote


__all__ = ["PureTransportDB"]

class PurePushInfo(PushInfo):
    """TODO: Implementation"""
    __slots__ = tuple()
    
        
        
class PureFetchInfo(FetchInfo):
    """TODO"""
    __slots__ = tuple()
    

class PureTransportDB(TransportDB):
    # The following variables need to be set by the derived class
    #{Configuration
    protocol = None
    RemoteCls = Remote
    #}end configuraiton
    
    #{ Interface
    
    def fetch(self, url, refspecs, progress=None, **kwargs):
        raise NotImplementedError()
        
    def push(self, url, refspecs, progress=None, **kwargs):
        raise NotImplementedError()
        
    @property
    def remotes(self):
        return self.RemoteCls.list_items(self)
        
    def remote(self, name='origin'):
        return self.remotes[name]
        
    def create_remote(self, name, url, **kwargs):
        return self.RemoteCls.create(self, name, url, **kwargs)
        
    def delete_remote(self, remote):
        return self.RemoteCls.remove(self, remote)
    
    #}end interface