import json

from django.core import mail
from django.test.utils import override_settings

from hc.api.models import Channel, Check
from hc.test import BaseTestCase


class AddEmailTestCase(BaseTestCase):
    def setUp(self):
        super().setUp()
        self.check = Check.objects.create(project=self.project)
        self.url = f"/projects/{self.project.code}/add_email/"

    def test_instructions_work(self):
        self.client.login(username="alice@example.org", password="password")
        r = self.client.get(self.url)
        self.assertContains(r, "Get an email message")
        self.assertContains(r, "Requires confirmation")
        self.assertContains(r, "Set Up Email Notifications")

    def test_it_creates_channel(self):
        form = {"value": "dan@example.org", "down": "true", "up": "true"}

        self.client.login(username="alice@example.org", password="password")
        r = self.client.post(self.url, form)
        self.assertRedirects(r, self.channels_url)

        c = Channel.objects.get()
        doc = json.loads(c.value)
        self.assertEqual(c.kind, "email")
        self.assertEqual(doc["value"], "dan@example.org")
        self.assertFalse(c.email_verified)
        self.assertEqual(c.project, self.project)

        # Email should have been sent
        self.assertEqual(len(mail.outbox), 1)

        email = mail.outbox[0]
        self.assertTrue(email.subject.startswith("Verify email address on"))
        # Make sure we're sending to an email address, not a JSON string:
        self.assertEqual(email.to[0], "dan@example.org")

        # Make sure it calls assign_all_checks
        self.assertEqual(c.checks.count(), 1)

    def test_team_access_works(self):
        form = {"value": "bob@example.org", "down": "true", "up": "true"}

        self.client.login(username="bob@example.org", password="password")
        self.client.post(self.url, form)

        ch = Channel.objects.get()
        # Added by bob, but should belong to alice (bob has team access)
        self.assertEqual(ch.project, self.project)

    def test_it_rejects_bad_email(self):
        form = {"value": "not an email address", "down": "true", "up": "true"}

        self.client.login(username="alice@example.org", password="password")
        r = self.client.post(self.url, form)
        self.assertContains(r, "Enter a valid email address.")

    def test_it_trims_whitespace(self):
        form = {"value": "   alice@example.org   ", "down": "true", "up": "true"}

        self.client.login(username="alice@example.org", password="password")
        self.client.post(self.url, form)

        c = Channel.objects.get()
        doc = json.loads(c.value)
        self.assertEqual(doc["value"], "alice@example.org")

    @override_settings(EMAIL_USE_VERIFICATION=False)
    def test_it_hides_confirmation_needed_notice(self):
        self.client.login(username="alice@example.org", password="password")
        r = self.client.get(self.url)
        self.assertNotContains(r, "Requires confirmation")

    @override_settings(EMAIL_USE_VERIFICATION=False)
    def test_it_auto_verifies_email(self):
        form = {"value": "dan@example.org", "down": "true", "up": "true"}

        self.client.login(username="alice@example.org", password="password")
        r = self.client.post(self.url, form)
        self.assertRedirects(r, self.channels_url)

        c = Channel.objects.get()
        doc = json.loads(c.value)
        self.assertEqual(c.kind, "email")
        self.assertEqual(doc["value"], "dan@example.org")
        self.assertTrue(c.email_verified)

        # Email should *not* have been sent
        self.assertEqual(len(mail.outbox), 0)

    def test_it_auto_verifies_own_email(self):
        form = {"value": "alice@example.org", "down": "true", "up": "true"}

        self.client.login(username="alice@example.org", password="password")
        r = self.client.post(self.url, form)
        self.assertRedirects(r, self.channels_url)

        c = Channel.objects.get()
        doc = json.loads(c.value)
        self.assertEqual(c.kind, "email")
        self.assertEqual(doc["value"], "alice@example.org")
        self.assertTrue(c.email_verified)

        # Email should *not* have been sent
        self.assertEqual(len(mail.outbox), 0)

    def test_it_rejects_unchecked_up_and_down(self):
        form = {"value": "alice@example.org"}

        self.client.login(username="alice@example.org", password="password")
        r = self.client.post(self.url, form)
        self.assertContains(r, "Please select at least one.")

    def test_it_requires_rw_access(self):
        self.bobs_membership.role = "r"
        self.bobs_membership.save()

        self.client.login(username="bob@example.org", password="password")
        r = self.client.get(self.url)
        self.assertEqual(r.status_code, 403)