import pytest
from flask import Response, url_for
from flask_wtf.csrf import CSRFError
from notifications_python_client.errors import HTTPError


def test_bad_url_returns_page_not_found(client_request):
    page = client_request.get_url(
        "/bad_url",
        _expected_status=404,
    )
    assert page.h1.string.strip() == "Page not found"
    assert page.title.string.strip() == "Page not found – Notify.gov"


def test_load_service_before_request_handles_404(client_request, mocker):
    exc = HTTPError(Response(status=404), "Not found")
    get_service = mocker.patch("app.service_api_client.get_service", side_effect=exc)

    client_request.get(
        "main.service_dashboard",
        service_id="00000000-0000-0000-0000-000000000000",
        _expected_status=404,
    )

    get_service.assert_called_once_with("00000000-0000-0000-0000-000000000000")


@pytest.mark.parametrize(
    "url",
    [
        "/new-password/MALFORMED_TOKEN",
        "/user-profile/email/confirm/MALFORMED_TOKEN",
        "/verify-email/MALFORMED_TOKEN",
    ],
)
def test_malformed_token_returns_page_not_found(client_request, url):
    page = client_request.get_url(url, _expected_status=404)

    assert page.h1.string.strip() == "Page not found"
    flash_banner = page.find("div", class_="banner-dangerous").string.strip()
    assert flash_banner == "There’s something wrong with the link you’ve used."
    assert page.title.string.strip() == "Page not found – Notify.gov"


def test_csrf_returns_400(client_request, mocker):
    # we turn off CSRF handling for tests, so fake a CSRF response here.
    csrf_err = CSRFError("400 Bad Request: The CSRF tokens do not match.")
    mocker.patch("app.main.views.index.render_template", side_effect=csrf_err)

    page = client_request.get_url(
        "/privacy",
        _expected_status=400,
        _test_page_title=False,
    )

    assert (
        page.h1.string.strip()
        == "Sorry, we can't deliver what you asked for right now."
    )
    assert (
        page.title.string.strip()
        == "Sorry, there’s a problem with the service – Notify.gov"
    )


def test_csrf_redirects_to_sign_in_page_if_not_signed_in(client_request, mocker):
    csrf_err = CSRFError("400 Bad Request: The CSRF tokens do not match.")
    mocker.patch("app.main.views.index.render_template", side_effect=csrf_err)

    client_request.logout()
    client_request.get_url(
        "/privacy",
        _expected_redirect=url_for("main.sign_in", next="/privacy"),
    )


def test_405_returns_something_went_wrong_page(client_request, mocker):
    page = client_request.post_url("/", _expected_status=405)

    assert (
        page.h1.string.strip()
        == "Sorry, we can't deliver what you asked for right now."
    )
    assert (
        page.title.string.strip()
        == "Sorry, there’s a problem with the service – Notify.gov"
    )
