import re

import pytest
from django.core import mail
from django.core.exceptions import ValidationError
from django.urls import reverse

from intent.accounts.validators import username_validators


def _sign_in_with_code(client, email):
    client.post(reverse("account_request_login_code"), {"email": email})
    code = re.search(r"^\s*([A-Z0-9-]{6,})\s*$", mail.outbox[-1].body, re.MULTILINE).group(1)
    return client.post(reverse("account_confirm_login_code"), {"code": code})


def test_login_page_offers_code_not_password(client, db):
    html = client.get(reverse("account_login")).content.decode()
    assert 'type="password"' not in html
    assert reverse("account_request_login_code") in html


def test_signup_has_no_password(client, db):
    html = client.get(reverse("account_signup")).content.decode()
    assert 'type="password"' not in html


def test_sign_in_with_emailed_code(client, make_user):
    user = make_user("ada")
    response = _sign_in_with_code(client, "ada@example.com")
    assert response.status_code == 302
    assert client.session["_auth_user_id"] == user.pk


def test_staff_cannot_sign_in_through_allauth(client, make_user):
    make_user("root", is_staff=True)
    response = _sign_in_with_code(client, "root@example.com")
    assert response["Location"].startswith(reverse("admin:login"))
    assert "_auth_user_id" not in client.session


@pytest.mark.parametrize("value", ["ada", "ada-lovelace", "a_1"])
def test_valid_usernames(value):
    for validator in username_validators:
        validator(value)


@pytest.mark.parametrize("value", ["ada@example.com", "-ada", "ada.l", "x" * 40])
def test_invalid_usernames(value):
    with pytest.raises(ValidationError):
        for validator in username_validators:
            validator(value)