from typing import List

import pytest

from facefusion import state_manager
from facefusion.libraries import datachannel as datachannel_module, opus as opus_module, vpx as vpx_module
from facefusion.rtc import add_audio_track, add_video_track, create_peer_connection, create_sdp_answer, create_sdp_offer, delete_peers, get_payload_type, send_audio, send_video, set_remote_description
from facefusion.types import RtcPeer


@pytest.fixture(scope = 'module', autouse = True)
def before_all() -> None:
	state_manager.init_item('download_providers', [ 'github', 'huggingface' ])

	datachannel_module.pre_check()
	opus_module.pre_check()
	vpx_module.pre_check()


def test_create_peer_connection() -> None:
	peer_connection = create_peer_connection()
	datachannel_library = datachannel_module.create_static_library()

	assert peer_connection
	assert datachannel_library.rtcDeletePeerConnection(peer_connection) == 0


def test_create_sdp_offer() -> None:
	sender_peer_connection = create_peer_connection()
	add_video_track(sender_peer_connection, 'sendonly', 'vp8', 96)
	add_audio_track(sender_peer_connection, 'sendonly', 'opus', 111)
	sdp_offer = create_sdp_offer(sender_peer_connection)

	assert 'm=video' in sdp_offer
	assert 'VP8/90000' in sdp_offer
	assert 'a=ssrc:42 cname:video' in sdp_offer
	assert 'm=audio' in sdp_offer
	assert 'opus/48000/2' in sdp_offer
	assert 'a=ssrc:43 cname:audio' in sdp_offer

	datachannel_module.create_static_library().rtcDeletePeerConnection(sender_peer_connection)


def test_create_sdp_answer() -> None:
	datachannel_library = datachannel_module.create_static_library()

	sender_peer_connection = create_peer_connection()
	add_video_track(sender_peer_connection, 'sendonly', 'vp8', 96)
	add_audio_track(sender_peer_connection, 'sendonly', 'opus', 111)
	sdp_offer = create_sdp_offer(sender_peer_connection)

	receiver_peer_connection = create_peer_connection()
	set_remote_description(receiver_peer_connection, sdp_offer)
	add_video_track(receiver_peer_connection, 'recvonly', 'vp8', 96)
	add_audio_track(receiver_peer_connection, 'recvonly', 'opus', 111)
	sdp_answer = create_sdp_answer(receiver_peer_connection)

	assert 'm=video' in sdp_answer
	assert 'VP8/90000' in sdp_answer
	assert 'm=audio' in sdp_answer
	assert 'opus/48000/2' in sdp_answer
	assert 'a=recvonly' in sdp_answer

	assert datachannel_library.rtcDeletePeerConnection(sender_peer_connection) == 0
	assert datachannel_library.rtcDeletePeerConnection(receiver_peer_connection) == 0


def test_send_video() -> None:
	datachannel_library = datachannel_module.create_static_library()
	peer_connection = create_peer_connection()
	video_track = add_video_track(peer_connection, 'sendonly', 'vp8', 96)
	rtc_peer : RtcPeer =\
	{
		'peer_connection': peer_connection,
		'video':
		{
			'sender_track': video_track,
			'receiver_track': video_track,
			'codec': 'vp8'
		}
	}

	send_video(rtc_peer, bytes(1024), 0)

	datachannel_library.rtcDeletePeerConnection(peer_connection)


def test_send_audio() -> None:
	datachannel_library = datachannel_module.create_static_library()
	peer_connection = create_peer_connection()
	audio_track = add_audio_track(peer_connection, 'sendonly', 'opus', 111)
	rtc_peer : RtcPeer =\
	{
		'peer_connection': peer_connection,
		'video':
		{
			'sender_track': 0,
			'receiver_track': 0,
			'codec': 'vp8'
		},
		'audio':
		{
			'sender_track': audio_track,
			'receiver_track': audio_track,
			'codec': 'opus'
		}
	}

	send_audio(rtc_peer, bytes(960), 0)

	datachannel_library.rtcDeletePeerConnection(peer_connection)


def test_delete_peers() -> None:
	datachannel_library = datachannel_module.create_static_library()
	peer_connection = create_peer_connection()
	rtc_peers : List[RtcPeer] =\
	[
		{
			'peer_connection': peer_connection,
			'video':
			{
				'sender_track': 0,
				'receiver_track': 0,
				'codec': 'vp8'
			}
		}
	]

	delete_peers(rtc_peers)

	assert datachannel_library.rtcDeletePeerConnection(peer_connection) == -1


def test_get_payload_type() -> None:
	peer_connection = create_peer_connection()
	add_video_track(peer_connection, 'sendonly', 'vp8', 96)
	add_audio_track(peer_connection, 'sendonly', 'opus', 111)
	sdp_offer = create_sdp_offer(peer_connection)

	assert get_payload_type(sdp_offer, 'vp8') == 96
	assert get_payload_type(sdp_offer, 'opus') == 111
	assert get_payload_type(sdp_offer, 'av1') == 0

	datachannel_module.create_static_library().rtcDeletePeerConnection(peer_connection)