import json

from django.test.utils import override_settings
from hc.api.models import Channel
from hc.test import BaseTestCase
from mock import patch


class AddSlackBtnTestCase(BaseTestCase):
    @override_settings(SLACK_CLIENT_ID="foo")
    def test_it_prepares_login_link(self):
        r = self.client.get("/integrations/add_slack/")
        self.assertContains(r, "Before adding Slack integration", status_code=200)

        self.assertContains(r, "?next=/integrations/add_slack/")

    @override_settings(SLACK_CLIENT_ID="foo")
    def test_slack_button(self):
        self.client.login(username="alice@example.org", password="password")
        r = self.client.get("/integrations/add_slack/")
        self.assertContains(r, "slack.com/oauth/authorize", status_code=200)

        # There should now be a key in session
        self.assertTrue("slack" in self.client.session)

    @patch("hc.front.views.requests.post")
    def test_it_handles_oauth_response(self, mock_post):
        session = self.client.session
        session["slack"] = "foo"
        session.save()

        oauth_response = {
            "ok": True,
            "team_name": "foo",
            "incoming_webhook": {"url": "http://example.org", "channel": "bar"},
        }

        mock_post.return_value.text = json.dumps(oauth_response)
        mock_post.return_value.json.return_value = oauth_response

        url = "/integrations/add_slack_btn/?code=12345678&state=foo"

        self.client.login(username="alice@example.org", password="password")
        r = self.client.get(url, follow=True)
        self.assertRedirects(r, "/integrations/")
        self.assertContains(r, "The Slack integration has been added!")

        ch = Channel.objects.get()
        self.assertEqual(ch.slack_team, "foo")
        self.assertEqual(ch.slack_channel, "bar")
        self.assertEqual(ch.slack_webhook_url, "http://example.org")
        self.assertEqual(ch.project, self.project)

        # Session should now be clean
        self.assertFalse("slack" in self.client.session)

    def test_it_avoids_csrf(self):
        session = self.client.session
        session["slack"] = "foo"
        session.save()

        url = "/integrations/add_slack_btn/?code=12345678&state=bar"

        self.client.login(username="alice@example.org", password="password")
        r = self.client.get(url)
        self.assertEqual(r.status_code, 400)

    @patch("hc.front.views.requests.post")
    def test_it_handles_oauth_error(self, mock_post):
        session = self.client.session
        session["slack"] = "foo"
        session.save()

        oauth_response = {"ok": False, "error": "something went wrong"}

        mock_post.return_value.text = json.dumps(oauth_response)
        mock_post.return_value.json.return_value = oauth_response

        url = "/integrations/add_slack_btn/?code=12345678&state=foo"

        self.client.login(username="alice@example.org", password="password")
        r = self.client.get(url, follow=True)
        self.assertRedirects(r, "/integrations/")
        self.assertContains(r, "something went wrong")