"""Email de test depuis l'écran « Messages » (`POST .../notifications/test`) :
envoi synchrone, résultat réel du serveur SMTP renvoyé à la coordination."""

import smtplib

import pytest

from app.config import get_settings
from app.models import Role


def _url(edition):
    return f"/editions/{edition.id}/notifications/test"


class _FakeSmtp:
    def __init__(self, error=None):
        self.sent = []
        self.error = error

    def __enter__(self):
        return self

    def __exit__(self, *exc):
        return False

    def send_message(self, message):
        if self.error:
            raise self.error
        self.sent.append(message)


@pytest.fixture
def smtp_enabled(monkeypatch):
    monkeypatch.setenv("EMAIL_ENABLED", "true")
    get_settings.cache_clear()


def test_disabled_email_is_reported(client, edition):
    resp = client.post(_url(edition), json={"email": "moi@exemple.fr"})
    assert resp.status_code == 200
    assert resp.json()["status"] == "disabled"


def test_sends_the_test_email(client, edition, smtp_enabled, monkeypatch):
    fake = _FakeSmtp()
    monkeypatch.setattr("app.email.sender.open_smtp", lambda settings: fake)
    resp = client.post(_url(edition), json={"email": " moi@exemple.fr "})
    assert resp.json()["status"] == "sent"
    (message,) = fake.sent
    assert message["To"] == "moi@exemple.fr"


def test_connection_failure_is_reported_with_the_server_message(
    client, edition, smtp_enabled, monkeypatch
):
    def refuse(settings):
        raise smtplib.SMTPAuthenticationError(535, b"authentication failed")

    monkeypatch.setattr("app.email.sender.open_smtp", refuse)
    body = client.post(_url(edition), json={"email": "moi@exemple.fr"}).json()
    assert body["status"] == "connection_failed"
    assert "535" in body["detail"]


def test_rejected_message_never_echoes_the_address(client, edition, smtp_enabled, monkeypatch):
    refused = smtplib.SMTPRecipientsRefused({"moi@exemple.fr": (550, b"no such user")})
    monkeypatch.setattr("app.email.sender.open_smtp", lambda settings: _FakeSmtp(refused))
    body = client.post(_url(edition), json={"email": "moi@exemple.fr"}).json()
    assert body["status"] == "rejected"
    assert "550" in body["detail"]
    assert "moi@exemple.fr" not in body["detail"]


@pytest.mark.parametrize("email", ["", "pas-un-email", "@exemple.fr", "moi@", "a b@c.fr"])
def test_invalid_address_is_rejected(client, edition, email):
    resp = client.post(_url(edition), json={"email": email})
    assert resp.status_code == 422


def test_is_coordinator_only(edition, make_account, as_account):
    lead = as_account(make_account(Role.LEAD))
    assert lead.post(_url(edition), json={"email": "moi@exemple.fr"}).status_code == 403