# encoding: utf-8
"""Tests of Branding API views. """
import json
import urllib

import ddt
import mock
from config_models.models import cache
from django.conf import settings
from django.contrib.auth.models import User
from django.core.urlresolvers import reverse
from django.test import TestCase

from branding.models import BrandingApiConfig
from openedx.core.djangoapps.dark_lang.models import DarkLangConfig
from openedx.core.djangoapps.lang_pref.api import released_languages
from openedx.core.djangoapps.site_configuration.tests.mixins import SiteMixin
from openedx.core.djangoapps.theming.tests.test_util import with_comprehensive_theme_context
from student.tests.factories import UserFactory


@ddt.ddt
class TestFooter(TestCase):
    """Test API end-point for retrieving the footer. """

    def setUp(self):
        """Clear the configuration cache. """
        super(TestFooter, self).setUp()
        cache.clear()

    @ddt.data("*/*", "text/html", "application/json")
    def test_feature_flag(self, accepts):
        self._set_feature_flag(False)
        resp = self._get_footer(accepts=accepts)
        self.assertEqual(resp.status_code, 404)

    @ddt.data(
        # Open source version
        (None, "application/json", "application/json; charset=utf-8", "Open edX"),
        (None, "text/html", "text/html; charset=utf-8", "lms-footer.css"),
        (None, "text/html", "text/html; charset=utf-8", "Open edX"),

        # EdX.org version
        ("edx.org", "application/json", "application/json; charset=utf-8", "edX Inc"),
        ("edx.org", "text/html", "text/html; charset=utf-8", "lms-footer-edx.css"),
        ("edx.org", "text/html", "text/html; charset=utf-8", "edX Inc"),
    )
    @ddt.unpack
    def test_footer_content_types(self, theme, accepts, content_type, content):
        self._set_feature_flag(True)
        with with_comprehensive_theme_context(theme):
            resp = self._get_footer(accepts=accepts)

        self.assertEqual(resp.status_code, 200)
        self.assertEqual(resp["Content-Type"], content_type)
        self.assertIn(content, resp.content)

    @mock.patch.dict(settings.FEATURES, {'ENABLE_FOOTER_MOBILE_APP_LINKS': True})
    @ddt.data("edx.org", None)
    def test_footer_json(self, theme):
        self._set_feature_flag(True)
        with with_comprehensive_theme_context(theme):
            resp = self._get_footer()

        self.assertEqual(resp.status_code, 200)
        json_data = json.loads(resp.content)
        self.assertTrue(isinstance(json_data, dict))

        # Logo
        self.assertIn("logo_image", json_data)

        # Links
        self.assertIn("navigation_links", json_data)
        for link in json_data["navigation_links"]:
            self.assertIn("name", link)
            self.assertIn("title", link)
            self.assertIn("url", link)

        # Social links
        self.assertIn("social_links", json_data)
        for link in json_data["social_links"]:
            self.assertIn("name", link)
            self.assertIn("title", link)
            self.assertIn("url", link)
            self.assertIn("icon-class", link)
            self.assertIn("action", link)

        # Mobile links
        self.assertIn("mobile_links", json_data)
        for link in json_data["mobile_links"]:
            self.assertIn("name", link)
            self.assertIn("title", link)
            self.assertIn("url", link)
            self.assertIn("image", link)

        # Legal links
        self.assertIn("legal_links", json_data)
        for link in json_data["legal_links"]:
            self.assertIn("name", link)
            self.assertIn("title", link)
            self.assertIn("url", link)

        # OpenEdX
        self.assertIn("openedx_link", json_data)
        self.assertIn("url", json_data["openedx_link"])
        self.assertIn("title", json_data["openedx_link"])
        self.assertIn("image", json_data["openedx_link"])

        # Copyright
        self.assertIn("copyright", json_data)

    def test_absolute_urls_with_cdn(self):
        self._set_feature_flag(True)

        # Ordinarily, we'd use `override_settings()` to override STATIC_URL,
        # which is what the staticfiles storage backend is using to construct the URL.
        # Unfortunately, other parts of the system are caching this value on module
        # load, which can cause other tests to fail.  To ensure that this change
        # doesn't affect other tests, we patch the `url()` method directly instead.
        cdn_url = "http://cdn.example.com/static/image.png"
        with mock.patch('branding.api.staticfiles_storage.url', return_value=cdn_url):
            resp = self._get_footer()

        self.assertEqual(resp.status_code, 200)
        json_data = json.loads(resp.content)

        self.assertEqual(json_data["logo_image"], cdn_url)

        for link in json_data["mobile_links"]:
            self.assertEqual(link["url"], cdn_url)

    @ddt.data(
        ("en", "registered trademarks"),
        ("eo", u"régïstéréd trädémärks"),  # Dummy language string
        ("unknown", "registered trademarks"),  # default to English
    )
    @ddt.unpack
    def test_language_override_translation(self, language, expected_copyright):
        self._set_feature_flag(True)

        # Load the footer with the specified language
        resp = self._get_footer(params={'language': language})
        self.assertEqual(resp.status_code, 200)
        json_data = json.loads(resp.content)

        # Verify that the translation occurred
        self.assertIn(expected_copyright, json_data['copyright'])

    @ddt.data(
        # OpenEdX
        (None, "en", "lms-footer.css"),
        (None, "ar", "lms-footer-rtl.css"),

        # EdX.org
        ("edx.org", "en", "lms-footer-edx.css"),
        ("edx.org", "ar", "lms-footer-edx-rtl.css"),
    )
    @ddt.unpack
    def test_language_rtl(self, theme, language, static_path):
        self._set_feature_flag(True)

        with with_comprehensive_theme_context(theme):
            resp = self._get_footer(accepts="text/html", params={'language': language})

        self.assertEqual(resp.status_code, 200)
        self.assertIn(static_path, resp.content)

    @ddt.data(
        # OpenEdX
        (None, True),
        (None, False),

        # EdX.org
        ("edx.org", True),
        ("edx.org", False),
    )
    @ddt.unpack
    def test_show_openedx_logo(self, theme, show_logo):
        self._set_feature_flag(True)

        with with_comprehensive_theme_context(theme):
            params = {'show-openedx-logo': 1} if show_logo else {}
            resp = self._get_footer(accepts="text/html", params=params)

        self.assertEqual(resp.status_code, 200)

        if show_logo:
            self.assertIn(settings.FOOTER_OPENEDX_URL, resp.content)
        else:
            self.assertNotIn(settings.FOOTER_OPENEDX_URL, resp.content)

    @ddt.data(
        # OpenEdX
        (None, False),
        (None, True),

        # EdX.org
        ("edx.org", False),
        ("edx.org", True),
    )
    @ddt.unpack
    def test_include_dependencies(self, theme, include_dependencies):
        self._set_feature_flag(True)
        with with_comprehensive_theme_context(theme):
            params = {'include-dependencies': 1} if include_dependencies else {}
            resp = self._get_footer(accepts="text/html", params=params)

        self.assertEqual(resp.status_code, 200)

        if include_dependencies:
            self.assertIn("vendor", resp.content)
        else:
            self.assertNotIn("vendor", resp.content)

    @ddt.data(
        # OpenEdX
        (None, None, '1'),
        (None, 'eo', '1'),
        (None, None, ''),

        # EdX.org
        ('edx.org', None, '1'),
        ('edx.org', 'eo', '1'),
        ('edx.org', None, '')
    )
    @ddt.unpack
    def test_include_language_selector(self, theme, language, include_language_selector):
        self._set_feature_flag(True)
        DarkLangConfig(released_languages='en,eo,es-419,fr', enabled=True, changed_by=User().save()).save()

        with with_comprehensive_theme_context(theme):
            params = {
                key: val for key, val in [
                    ('language', language), ('include-language-selector', include_language_selector)
                ] if val
            }
            resp = self._get_footer(accepts="text/html", params=params)

        self.assertEqual(resp.status_code, 200)

        if include_language_selector:
            selected_language = language if language else 'en'
            self._verify_language_selector(resp.content, selected_language)
        else:
            self.assertNotIn('footer-language-selector', resp.content)

    def test_no_supported_accept_type(self):
        self._set_feature_flag(True)
        resp = self._get_footer(accepts="application/x-shockwave-flash")
        self.assertEqual(resp.status_code, 406)

    def _set_feature_flag(self, enabled):
        """Enable or disable the feature flag for the branding API end-points. """
        config = BrandingApiConfig(enabled=enabled)
        config.save()

    def _get_footer(self, accepts="application/json", params=None):
        """Retrieve the footer. """
        url = reverse("branding_footer")

        if params is not None:
            url = u"{url}?{params}".format(
                url=url,
                params=urllib.urlencode(params)
            )

        return self.client.get(url, HTTP_ACCEPT=accepts)

    def _verify_language_selector(self, content, selected_language):
        """ Verify that the language selector is present and correctly configured."""
        # Verify the selector is included
        self.assertIn('footer-language-selector', content)

        # Verify the correct language is selected
        self.assertIn('<option value="{}" selected="selected">'.format(selected_language), content)

        # Verify the language choices
        for language in released_languages():
            if language.code == selected_language:
                continue
            self.assertIn('<option value="{}">'.format(language.code), content)


class TestIndex(SiteMixin, TestCase):
    """ Test the index view """

    def setUp(self):
        """ Set up a user """
        super(TestIndex, self).setUp()

        patcher = mock.patch("student.models.tracker")
        self.mock_tracker = patcher.start()
        self.user = UserFactory.create()
        self.user.set_password("password")
        self.user.save()

    def test_index_does_not_redirect_without_site_override(self):
        """ Test index view does not redirect if MKTG_URLS['ROOT'] is not set """
        response = self.client.get(reverse("root"))
        self.assertEqual(response.status_code, 200)

    def test_index_redirects_to_marketing_site_with_site_override(self):
        """ Test index view redirects if MKTG_URLS['ROOT'] is set in SiteConfiguration """
        self.use_site(self.site_other)
        response = self.client.get(reverse("root"))
        self.assertRedirects(
            response,
            self.site_configuration_other.values["MKTG_URLS"]["ROOT"],
            fetch_redirect_response=False
        )

    def test_header_logo_links_to_marketing_site_with_site_override(self):
        """
        Test marketing site root link is included on dashboard page
        if MKTG_URLS['ROOT'] is set in SiteConfiguration
        """
        self.use_site(self.site_other)
        self.client.login(username=self.user.username, password="password")
        response = self.client.get(reverse("dashboard"))
        self.assertIn(self.site_configuration_other.values["MKTG_URLS"]["ROOT"], response.content)
