"""Tests FeedbackBusClient (J3.2).

On mock python-socketio pour ne pas ouvrir de vraie connexion réseau.
Le test E2E réel (vraie connexion bus 5004) est différé à J4.3.
"""

from unittest.mock import patch

import pytest

from agent_v0.agent_v1.network.feedback_bus import FeedbackBusClient, LEA_EVENTS


def test_init_creates_socketio_client():
    bus = FeedbackBusClient("http://localhost:5004")
    assert bus._sio is not None
    assert bus.connected is False


def test_init_strips_trailing_slash():
    bus = FeedbackBusClient("http://localhost:5004/")
    assert bus._url == "http://localhost:5004"


def test_lea_events_registered():
    bus = FeedbackBusClient("http://localhost:5004")
    handlers = bus._sio.handlers.get('/', {})
    for ev in LEA_EVENTS:
        assert ev in handlers, f"Handler {ev!r} non enregistré sur le client"


def test_dispatch_calls_callback():
    received = []
    bus = FeedbackBusClient(
        "http://localhost:5004",
        on_event=lambda e, p: received.append((e, p)),
    )
    bus._dispatch('lea:paused', {'workflow': 'demo', 'reason': 'incertain'})
    assert received == [('lea:paused', {'workflow': 'demo', 'reason': 'incertain'})]


def test_dispatch_handles_none_payload():
    received = []
    bus = FeedbackBusClient(
        "http://localhost:5004",
        on_event=lambda e, p: received.append((e, p)),
    )
    bus._dispatch('lea:done', None)
    assert received == [('lea:done', {})]


def test_dispatch_silenced_on_callback_error():
    """Une exception dans le callback consommateur ne doit jamais remonter."""
    def boom(event, payload):
        raise RuntimeError("callback fail")
    bus = FeedbackBusClient("http://localhost:5004", on_event=boom)
    bus._dispatch('lea:paused', {})  # ne doit pas raise


def test_default_callback_is_silent():
    """Sans callback fourni, le dispatch ne casse pas."""
    bus = FeedbackBusClient("http://localhost:5004")
    bus._dispatch('lea:paused', {'x': 1})  # ne doit pas raise


def test_token_in_authorization_header():
    bus = FeedbackBusClient("http://localhost:5004", token="abc123")
    captured = {}

    def fake_connect(url, headers=None, **kwargs):
        captured['headers'] = headers
        raise RuntimeError("stop here")

    with patch.object(bus._sio, 'connect', side_effect=fake_connect):
        bus._run()

    assert captured['headers']['Authorization'] == 'Bearer abc123'


def test_no_token_means_no_auth_header():
    bus = FeedbackBusClient("http://localhost:5004")
    captured = {}

    def fake_connect(url, headers=None, **kwargs):
        captured['headers'] = headers
        raise RuntimeError("stop here")

    with patch.object(bus._sio, 'connect', side_effect=fake_connect):
        bus._run()

    assert 'Authorization' not in captured['headers']


def test_run_silenced_on_connect_error():
    """connect() qui raise ne doit pas faire crasher le thread."""
    bus = FeedbackBusClient("http://localhost:5004")
    with patch.object(bus._sio, 'connect', side_effect=ConnectionError("boom")):
        bus._run()  # ne doit pas raise


def test_start_is_idempotent():
    """Un second start() pendant que le thread tourne ne doit pas en créer un autre."""
    import threading
    bus = FeedbackBusClient("http://localhost:5004")
    block = threading.Event()
    with patch.object(bus, '_run', side_effect=lambda: block.wait(timeout=2)):
        bus.start()
        first_thread = bus._thread
        bus.start()
        second_thread = bus._thread
        block.set()
    assert first_thread is second_thread, "start() doit être idempotent quand un thread tourne"


def test_stop_when_not_connected_is_silent():
    bus = FeedbackBusClient("http://localhost:5004")
    bus.stop()  # ne doit pas raise même si jamais connecté


def test_stop_silenced_on_disconnect_error():
    bus = FeedbackBusClient("http://localhost:5004")
    # Forcer connected=True sur l'instance et faire raise disconnect()
    with patch.object(bus._sio, 'disconnect', side_effect=RuntimeError("boom")):
        bus._sio.connected = True
        bus.stop()  # ne doit pas raise


# ----------------------------------------------------------------------
# J3.5 — Actions utilisateur (resume_replay / abort_replay)
# ----------------------------------------------------------------------

def test_resume_replay_emits_when_connected():
    bus = FeedbackBusClient("http://localhost:5004")
    bus._sio.connected = True
    with patch.object(bus._sio, 'emit') as mock_emit:
        ok = bus.resume_replay("rep_abc")
    assert ok is True
    mock_emit.assert_called_once_with("lea:replay_resume", {"replay_id": "rep_abc"})


def test_resume_replay_returns_false_when_disconnected():
    bus = FeedbackBusClient("http://localhost:5004")
    # _sio.connected reste False par défaut
    with patch.object(bus._sio, 'emit') as mock_emit:
        ok = bus.resume_replay("rep_abc")
    assert ok is False
    mock_emit.assert_not_called()


def test_abort_replay_emits_when_connected():
    bus = FeedbackBusClient("http://localhost:5004")
    bus._sio.connected = True
    with patch.object(bus._sio, 'emit') as mock_emit:
        ok = bus.abort_replay("rep_xyz")
    assert ok is True
    mock_emit.assert_called_once_with("lea:replay_abort", {"replay_id": "rep_xyz"})


def test_safe_emit_silenced_on_error():
    bus = FeedbackBusClient("http://localhost:5004")
    bus._sio.connected = True
    with patch.object(bus._sio, 'emit', side_effect=RuntimeError("boom")):
        ok = bus.resume_replay("rep_abc")
    assert ok is False  # erreur avalée silencieusement