#!/usr/bin/python3

# Copyright (C) 2008 AG Projects
#

"""
This test simulates a session in which the caller proposes 3 streams in the
INVITE and the callee rejects two of these.
   - The caller sends an INVITE with 1 video stream and 2 audio streams
   - the callee sends a 200 OK with the ports for two of the streams set to 0
   - Both parties start sending media
   - Media flows for 5 seconds
   - The callee sends a BYE
"""

from common import *


def caller_update(protocol, session, caller_media, callee_media):
    print('doing update for caller')
    defer = session.do_update(protocol, 'caller', 'request', False)
    defer.addCallback(callee_update, protocol, session, caller_media, callee_media)
    return defer


def callee_update(callee_addr, protocol, session, caller_media, callee_media):
    print('doing update for callee')
    defer = session.do_update(protocol, 'callee', 'reply', True)
    defer.addCallback(change_caller1, callee_addr, protocol, session, caller_media, callee_media)
    return defer


def change_caller1(caller_addr, callee_addr, protocol, session, caller_media, callee_media):
    print('stopping media for caller')
    defer = session.caller.stop_media()
    defer.addCallback(change_caller2, caller_addr, callee_addr, protocol, session, callee_media)
    return defer


def change_caller2(result, caller_addr, callee_addr, protocol, session, callee_media):
    print('setting new media for caller')
    caller_media = caller.set_media([('audio', 0, 'sendrecv', {}), ('video', 0, 'sendrecv', {}), ('audio', 40020, 'sendrecv', {})])
    return do_media(caller_addr, callee_addr, protocol, session, caller_media, callee_media)


def do_media(caller_addr, callee_addr, protocol, session, caller_media, callee_media):
    (caller_ip, caller_ports) = caller_addr
    (callee_ip, callee_ports) = callee_addr
    print('starting media for both parties')
    session.caller.start_media(caller_ip, caller_ports)
    session.callee.start_media(callee_ip, callee_ports)
    defer = DeferredList([caller_media, callee_media])
    defer.addCallback(wait, protocol, session)
    return defer


def wait(result, protocol, session):
    print('got media, waiting 5 seconds')
    defer = Deferred()
    defer.addCallback(kthxbye, protocol, session)
    reactor.callLater(5, defer.callback, None)
    return defer


def kthxbye(result, protocol, session):
    print('sending remove')
    return session.do_remove(protocol, 'callee')


def disconnect(result, connector):
    print('disconnecting')
    connector.disconnect()
    reactor.callLater(1, reactor.stop)


def catch_all_err(failure):
    print(failure)


if __name__ == '__main__':
    caller = Endpoint('Alice <alice@example.com>', 'Caller UA', True)
    caller_media = caller.set_media([('audio', 40000, 'sendrecv', {}), ('video', 40010, 'sendrecv', {}), ('audio', 40020, 'sendrecv', {})])
    callee = Endpoint('Bob <bob@example.com>', 'Callee UA', False)
    callee_media = callee.set_media([('audio', 0, 'sendrecv', {}), ('video', 0, 'sendrecv', {}), ('audio', 30020, 'sendrecv', {})])
    session = Session(caller, callee)
    connector, defer = connect_to_dispatcher()
    defer.addCallback(caller_update, session, caller_media, callee_media)
    defer.addCallback(disconnect, connector)
    defer.addErrback(catch_all_err)
    reactor.run()