from unittest.mock import patch

import pytest
from django.contrib.auth import REDIRECT_FIELD_NAME
from django.http import HttpResponse
from django.test.utils import override_settings
from django.urls import reverse
from rest_framework import status
from rest_framework.test import APIClient

from apps.auth_token.constants import SLACK_AUTH_TOKEN_NAME


@pytest.mark.django_db
@pytest.mark.parametrize(
    "backend_name,expected_url",
    (
        ("slack-login", "/a/grafana-oncall-app/users/me"),
        ("slack-install-free", "/a/grafana-oncall-app/chat-ops"),
    ),
)
def test_complete_slack_auth_redirect_ok(
    make_organization,
    make_user_for_organization,
    make_slack_token_for_user,
    backend_name,
    expected_url,
):
    organization = make_organization()
    admin = make_user_for_organization(organization)
    _, slack_token = make_slack_token_for_user(admin)

    client = APIClient()
    url = (
        reverse("api-internal:complete-social-auth", kwargs={"backend": backend_name})
        + f"?{SLACK_AUTH_TOKEN_NAME}={slack_token}"
    )

    with patch("apps.api.views.auth.do_complete") as mock_do_complete:
        mock_do_complete.return_value = None
        response = client.get(url)

    assert response.status_code == status.HTTP_302_FOUND
    assert response.url == expected_url


@pytest.mark.django_db
def test_complete_slack_auth_redirect_error(
    make_organization,
    make_user_for_organization,
    make_slack_token_for_user,
):
    organization = make_organization()
    admin = make_user_for_organization(organization)
    _, slack_token = make_slack_token_for_user(admin)

    client = APIClient()
    url = (
        reverse("api-internal:complete-social-auth", kwargs={"backend": "slack-login"})
        + f"?{SLACK_AUTH_TOKEN_NAME}={slack_token}"
    )

    def _custom_do_complete(backend, *args, **kwargs):
        backend.strategy.session[REDIRECT_FIELD_NAME] = "some-url"
        return HttpResponse(status=status.HTTP_400_BAD_REQUEST)

    with patch("apps.api.views.auth.do_complete", side_effect=_custom_do_complete):
        response = client.get(url)

    assert response.status_code == status.HTTP_302_FOUND
    assert response.url == "some-url"


@pytest.mark.django_db
@patch("apps.social_auth.backends.GoogleOAuth2.get_redirect_uri")
@patch("apps.social_auth.backends.GoogleOAuth2Token.create_auth_token", return_value=("something", "token_string"))
@override_settings(SOCIAL_AUTH_GOOGLE_OAUTH2_SCOPE=["https://www.googleapis.com/auth/calendar.events.readonly"])
@override_settings(SOCIAL_AUTH_GOOGLE_OAUTH2_KEY="ouath2_key")
def test_google_start_auth_redirect_ok(
    _mock_create_google_oauth2_auth_token,
    mock_google_oauth2_backend_get_redirect_uri,
    make_organization_and_user_with_plugin_token,
    make_user_auth_headers,
):
    redirect_uri = "http://testserver"
    mock_google_oauth2_backend_get_redirect_uri.return_value = redirect_uri

    _, user, token = make_organization_and_user_with_plugin_token()

    client = APIClient()
    url = reverse("api-internal:social-auth", kwargs={"backend": "google-oauth2"})
    response = client.get(url, **make_user_auth_headers(user, token))

    assert response.status_code == status.HTTP_200_OK
    assert response.json() == (
        "https://accounts.google.com/o/oauth2/auth?client_id=ouath2_key"
        f"&redirect_uri={redirect_uri}&response_type=code"
        "&state=token_string&scope=https://www.googleapis.com/auth/calendar.events.readonly+openid+email+profile"
        "&access_type=offline&approval_prompt=auto"
    )


@pytest.mark.django_db
@patch("apps.api.views.auth.do_complete", return_value=None)
def test_google_complete_auth_redirect_ok(
    _mock_do_complete,
    make_organization,
    make_user_for_organization,
    make_google_oauth2_token_for_user,
):
    organization = make_organization()
    admin = make_user_for_organization(organization)
    _, google_oauth2_token = make_google_oauth2_token_for_user(admin)

    client = APIClient()
    url = (
        reverse("api-internal:complete-social-auth", kwargs={"backend": "google-oauth2"})
        + f"?state={google_oauth2_token}"
    )

    response = client.get(url)

    assert response.status_code == status.HTTP_302_FOUND
    assert response.url == "/a/grafana-oncall-app/users/me"