from __future__ import absolute_import, print_function

from mercurial import (

    error,

    pycompat,

    ui as uimod,

    util,

    wireproto,

    wireprototypes,

    wireprotov1peer,

)

stringio = util.stringio

class proto(object):

    def __init__(self, args):

        self.args = args

        self.name = 'dummyproto'

    def getargs(self, spec):

        args = self.args

        args.setdefault(b'*', {})

        names = spec.split()

        return [args[n] for n in names]

    def checkperm(self, perm):

        pass

wireprototypes.TRANSPORTS['dummyproto'] = {

    'transport': 'dummy',

    'version': 1,

}

class clientpeer(wireprotov1peer.wirepeer):

    def __init__(self, serverrepo, ui):

        self.serverrepo = serverrepo

        self.ui = ui

    def url(self):

        return b'test'

    def local(self):

        return None

    def peer(self):

        return self

    def canpush(self):

        return True

    def close(self):

        pass

    def capabilities(self):

        return [b'batch']

    def _call(self, cmd, **args):

        args = pycompat.byteskwargs(args)

        res = wireproto.dispatch(self.serverrepo, proto(args), cmd)

        if isinstance(res, wireprototypes.bytesresponse):

            return res.data

        elif isinstance(res, bytes):

            return res

        else:

            raise error.Abort('dummy client does not support response type')

    def _callstream(self, cmd, **args):

        return stringio(self._call(cmd, **args))

    @wireprotov1peer.batchable

    def greet(self, name):

        f = wireprotov1peer.future()

        yield {b'name': mangle(name)}, f

        yield unmangle(f.value)

class serverrepo(object):

    def greet(self, name):

        return b"Hello, " + name

    def filtered(self, name):

        return self

def mangle(s):

    return b''.join(pycompat.bytechr(ord(c) + 1) for c in pycompat.bytestr(s))

def unmangle(s):

    return b''.join(pycompat.bytechr(ord(c) - 1) for c in pycompat.bytestr(s))

def greet(repo, proto, name):

    return mangle(repo.greet(unmangle(name)))

wireproto.commands[b'greet'] = (greet, b'name',)

srv = serverrepo()

clt = clientpeer(srv, uimod.ui())

print(clt.greet(b"Foobar"))