"""Load src/slack-bot/app.py under a unique module name so it doesn't collide
with the other Lambdas' app.py modules in sys.modules, plus common test doubles."""

import importlib.util
import pathlib
import sys
from unittest.mock import MagicMock

import pytest

_ROOT = pathlib.Path(__file__).resolve().parents[2]


def _load(name, relpath):
    spec = importlib.util.spec_from_file_location(name, _ROOT / relpath)
    mod = importlib.util.module_from_spec(spec)
    sys.modules[name] = mod
    spec.loader.exec_module(mod)
    return mod


@pytest.fixture
def slackbot_app():
    return _load("slackbot_app", "src/slack-bot/app.py")


@pytest.fixture
def slackbot_handler(monkeypatch):
    """Load handler.py; skip Slack auth.test so request parsing is the unit."""
    from slack_bolt import App
    from slack_bolt.adapter.aws_lambda import SlackRequestHandler

    slack_bot_dir = str(_ROOT / "src/slack-bot")
    monkeypatch.syspath_prepend(slack_bot_dir)
    saved = {name: sys.modules.get(name) for name in ("app", "handler")}
    for name in saved:
        sys.modules.pop(name, None)
    mod = _load("slackbot_handler", "src/slack-bot/handler.py")
    bolt_app = App(
        token="xoxb-test",
        signing_secret="test-secret",
        process_before_response=True,
        token_verification_enabled=False,
    )
    wrapped = SlackRequestHandler(app=bolt_app)
    monkeypatch.setattr(mod, "_get_handler", lambda: wrapped)
    yield mod
    mod._slack_handler = None
    for name, previous in saved.items():
        if previous is None:
            sys.modules.pop(name, None)
        else:
            sys.modules[name] = previous


@pytest.fixture
def respond():
    return MagicMock(name="respond")


@pytest.fixture
def client():
    return MagicMock(name="client")


@pytest.fixture
def routing_spy(slackbot_app, monkeypatch):
    """Replace the 3CX routing call with a spy so tests can assert on it
    without touching the network."""
    spy = MagicMock(name="_update_3cx_routing")
    monkeypatch.setattr(slackbot_app, "_update_3cx_routing", spy)
    return spy


@pytest.fixture
def text_of():
    """Helper: pull the `text=` kwarg from a mock's most recent call."""

    def _get(mock):
        return mock.call_args.kwargs.get("text", "")

    return _get