# Copyright (c) 2026 Krzysztof Rudnicki. MIT licence.
"""The console entrypoint.

`python main.py` used to do literally nothing: there was no __main__ block
and no uvicorn.run() call anywhere in the project.
"""

from __future__ import annotations

import runpy

import pytest
import uvicorn

import signal_bot.__main__ as entrypoint


@pytest.fixture
def captured(monkeypatch: pytest.MonkeyPatch) -> dict[str, object]:
    seen: dict[str, object] = {}

    def fake_run(target: str, **kwargs: object) -> None:
        seen["target"] = target
        seen.update(kwargs)

    monkeypatch.setattr(entrypoint.uvicorn, "run", fake_run)
    return seen


def test_runs_the_asgi_app_on_loopback_by_default(
    captured: dict[str, object], monkeypatch: pytest.MonkeyPatch
) -> None:
    monkeypatch.delenv("BIND_HOST", raising=False)
    monkeypatch.delenv("BIND_PORT", raising=False)
    entrypoint.main()
    assert captured["target"] == "signal_bot.app:app"
    assert captured["host"] == "127.0.0.1"
    assert captured["port"] == 8000


def test_bind_overrides_are_honoured(
    captured: dict[str, object], monkeypatch: pytest.MonkeyPatch
) -> None:
    # TEST-NET-1: proves the override without a bind-all literal.
    monkeypatch.setenv("BIND_HOST", "192.0.2.10")
    monkeypatch.setenv("BIND_PORT", "9001")
    entrypoint.main()
    assert captured["host"] == "192.0.2.10"
    assert captured["port"] == 9001


def test_module_runs_as_a_script(monkeypatch: pytest.MonkeyPatch) -> None:
    """`python -m signal_bot` must actually start the server."""
    seen: dict[str, object] = {}
    monkeypatch.setattr(uvicorn, "run", lambda target, **kw: seen.update(target=target))
    monkeypatch.delenv("BIND_HOST", raising=False)
    monkeypatch.delenv("BIND_PORT", raising=False)
    runpy.run_module("signal_bot", run_name="__main__", alter_sys=True)
    assert seen["target"] == "signal_bot.app:app"