import feedparser
from django.contrib.auth.models import User
from django.test import TestCase

from .models import PodcastEpisode, PodcastFeed
from .views import FeedFetch, _apply_feed, _entry_link


def _feed(link):
    item_link = f'<link>{link}</link>' if link is not None else ''
    return feedparser.parse(
        '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"><channel><title>99 ZU EINS</title>'
        '<item><title>Folge 724</title><guid>g724</guid>' + item_link +
        '<enclosure url="https://cdn.example/724.mp3" type="audio/mpeg" length="1"/></item>'
        '</channel></rss>'
    )


class EpisodeLinkTests(TestCase):
    def setUp(self):
        self.user = User.objects.create_user(username='alice', password='pw12345678')
        self.client.force_login(self.user)
        self.feed = PodcastFeed.objects.create(user=self.user, rss_url='https://example.org/rss', title='99 ZU EINS')

    def fetch(self, link):
        _apply_feed(self.feed, FeedFetch(200, _feed(link)))
        return PodcastEpisode.objects.get(feed=self.feed)

    def test_entry_link_takes_only_web_addresses(self):
        self.assertEqual(_entry_link({'link': ' https://x.fireside.fm/724 '}), 'https://x.fireside.fm/724')
        self.assertEqual(_entry_link({'link': 'javascript:alert(1)'}), '')
        self.assertEqual(_entry_link({}), '')

    def test_a_new_episode_gets_the_items_link(self):
        self.assertEqual(self.fetch('https://99zueins.fireside.fm/724').link, 'https://99zueins.fireside.fm/724')

    def test_a_refresh_fills_the_link_of_an_episode_that_has_none(self):
        self.assertEqual(self.fetch(None).link, '')
        self.assertEqual(self.fetch('https://99zueins.fireside.fm/724').link, 'https://99zueins.fireside.fm/724')

    def test_episode_detail_returns_the_link(self):
        ep = self.fetch('https://99zueins.fireside.fm/724')
        r = self.client.get(f'/podcasts/episodes/{ep.id}/')
        self.assertEqual(r.status_code, 200)
        self.assertEqual(r.json()['link'], 'https://99zueins.fireside.fm/724')