import importlib
import sys
from datetime import datetime as real_datetime

import logging
import pytest


def import_registrator_safely(monkeypatch):
    """
    registrator.py configure logging.basicConfig(filename='/sdsat/logs/..') au top-level.
    En CI, ce chemin peut ne pas exister et casser l'import.
    On neutralise basicConfig avant import.
    """
    monkeypatch.setattr(logging, "basicConfig", lambda *args, **kwargs: None)

    if "registrator" in sys.modules:
        del sys.modules["registrator"]

    return importlib.import_module("registrator")


def test_get_hostname_success(monkeypatch):
    registrator = import_registrator_safely(monkeypatch)

    monkeypatch.setattr(registrator.socket, "gethostname", lambda: "my-host")
    assert registrator.get_hostname() == "my-host"


def test_get_hostname_exception(monkeypatch):
    registrator = import_registrator_safely(monkeypatch)

    def boom():
        raise Exception("fail")

    monkeypatch.setattr(registrator.socket, "gethostname", boom)
    assert registrator.get_hostname() is None


def test_get_public_ip_success(monkeypatch):
    registrator = import_registrator_safely(monkeypatch)

    class FakeResp:
        def json(self):
            return {"origin": "1.2.3.4"}

    monkeypatch.setattr(registrator.requests, "get", lambda url: FakeResp())
    assert registrator.get_public_ip() == "1.2.3.4"


def test_get_public_ip_multiple_addresses(monkeypatch):
    registrator = import_registrator_safely(monkeypatch)

    class FakeResp:
        def json(self):
            return {"origin": "1.2.3.4, 5.6.7.8"}

    monkeypatch.setattr(registrator.requests, "get", lambda url: FakeResp())
    assert registrator.get_public_ip() == "1.2.3.4"


def test_get_public_ip_exception_returns_fallback(monkeypatch):
    registrator = import_registrator_safely(monkeypatch)

    def boom(url):
        raise Exception("network down")

    monkeypatch.setattr(registrator.requests, "get", boom)
    assert registrator.get_public_ip() == "69.69.69.69"


def test_send_to_api_posts_expected_payload(monkeypatch):
    registrator = import_registrator_safely(monkeypatch)

    # Fixe la date pour un test déterministe
    class FakeDateTime:
        @staticmethod
        def now():
            return real_datetime(2025, 1, 2, 3, 4, 5)

    monkeypatch.setattr(registrator, "datetime", FakeDateTime)

    captured = {}

    class FakePostResp:
        status_code = 200
        text = "OK"

    def fake_post(url, json):
        captured["url"] = url
        captured["json"] = json
        return FakePostResp()

    monkeypatch.setattr(registrator.requests, "post", fake_post)

    registrator.send_to_api("my-host", "8.8.8.8")

    assert captured["url"] == "http://api.sdsat.fr:8000/registrator"
    assert captured["json"]["host"] == "my-host"

    # IMPORTANT :
    # Ce test suppose que tu as corrigé registrator.py :
    #   "IP": IP
    assert captured["json"]["IP"] == "8.8.8.8"

    assert captured["json"]["Date_registration"] == "2025-01-02T03:04:05"