import random
from unittest.mock import patch, Mock

import requests
from django.test import TestCase, override_settings
from django.urls import reverse
from requests import RequestException

from bookmarks.models import UserProfile
from bookmarks.services import tasks
from bookmarks.tests.helpers import BookmarkFactoryMixin
from bookmarks.views.settings import app_version, get_version_info


class SettingsGeneralViewTestCase(TestCase, BookmarkFactoryMixin):

    def setUp(self) -> None:
        user = self.get_or_create_test_user()
        self.client.force_login(user)

    def create_profile_form_data(self, overrides=None):
        if not overrides:
            overrides = {}
        form_data = {
            'theme': UserProfile.THEME_AUTO,
            'bookmark_date_display': UserProfile.BOOKMARK_DATE_DISPLAY_RELATIVE,
            'bookmark_link_target': UserProfile.BOOKMARK_LINK_TARGET_BLANK,
            'web_archive_integration': UserProfile.WEB_ARCHIVE_INTEGRATION_DISABLED,
            'enable_sharing': False,
            'enable_favicons': False,
            'tag_search': UserProfile.TAG_SEARCH_STRICT,
            'display_url': False,
            'permanent_notes': False,
        }

        return {**form_data, **overrides}

    def test_should_render_successfully(self):
        response = self.client.get(reverse('bookmarks:settings.general'))

        self.assertEqual(response.status_code, 200)

    def test_should_check_authentication(self):
        self.client.logout()
        response = self.client.get(reverse('bookmarks:settings.general'), follow=True)

        self.assertRedirects(response, reverse('login') + '?next=' + reverse('bookmarks:settings.general'))

    def test_update_profile(self):
        form_data = {
            'update_profile': '',
            'theme': UserProfile.THEME_DARK,
            'bookmark_date_display': UserProfile.BOOKMARK_DATE_DISPLAY_HIDDEN,
            'bookmark_link_target': UserProfile.BOOKMARK_LINK_TARGET_SELF,
            'web_archive_integration': UserProfile.WEB_ARCHIVE_INTEGRATION_ENABLED,
            'enable_sharing': True,
            'enable_favicons': True,
            'tag_search': UserProfile.TAG_SEARCH_LAX,
            'display_url': True,
            'permanent_notes': True,
        }
        response = self.client.post(reverse('bookmarks:settings.general'), form_data)
        html = response.content.decode()

        self.user.profile.refresh_from_db()

        self.assertEqual(response.status_code, 200)
        self.assertEqual(self.user.profile.theme, form_data['theme'])
        self.assertEqual(self.user.profile.bookmark_date_display, form_data['bookmark_date_display'])
        self.assertEqual(self.user.profile.bookmark_link_target, form_data['bookmark_link_target'])
        self.assertEqual(self.user.profile.web_archive_integration, form_data['web_archive_integration'])
        self.assertEqual(self.user.profile.enable_sharing, form_data['enable_sharing'])
        self.assertEqual(self.user.profile.enable_favicons, form_data['enable_favicons'])
        self.assertEqual(self.user.profile.tag_search, form_data['tag_search'])
        self.assertEqual(self.user.profile.display_url, form_data['display_url'])
        self.assertEqual(self.user.profile.permanent_notes, form_data['permanent_notes'])
        self.assertInHTML('''
                <p class="form-input-hint">Profile updated</p>
            ''', html)

    def test_update_profile_should_not_be_called_without_respective_form_action(self):
        form_data = {
            'theme': UserProfile.THEME_DARK,
        }
        response = self.client.post(reverse('bookmarks:settings.general'), form_data)
        html = response.content.decode()

        self.user.profile.refresh_from_db()

        self.assertEqual(response.status_code, 200)
        self.assertEqual(self.user.profile.theme, UserProfile.THEME_AUTO)
        self.assertInHTML('''
                <p class="form-input-hint">Profile updated</p>
            ''', html, count=0)

    def test_enable_favicons_should_schedule_icon_update(self):
        with patch.object(tasks, 'schedule_bookmarks_without_favicons') as mock_schedule_bookmarks_without_favicons:
            # Enabling favicons schedules update
            form_data = self.create_profile_form_data({
                'update_profile': '',
                'enable_favicons': True,
            })
            self.client.post(reverse('bookmarks:settings.general'), form_data)

            mock_schedule_bookmarks_without_favicons.assert_called_once_with(self.user)

            # No update scheduled if favicons are already enabled
            mock_schedule_bookmarks_without_favicons.reset_mock()

            self.client.post(reverse('bookmarks:settings.general'), form_data)

            mock_schedule_bookmarks_without_favicons.assert_not_called()

            # No update scheduled when disabling favicons
            form_data = self.create_profile_form_data({
                'enable_favicons': False,
            })

            self.client.post(reverse('bookmarks:settings.general'), form_data)

            mock_schedule_bookmarks_without_favicons.assert_not_called()

    def test_refresh_favicons(self):
        with patch.object(tasks, 'schedule_refresh_favicons') as mock_schedule_refresh_favicons:
            form_data = {
                'refresh_favicons': '',
            }
            response = self.client.post(reverse('bookmarks:settings.general'), form_data)
            html = response.content.decode()

            mock_schedule_refresh_favicons.assert_called_once()
            self.assertInHTML('''
                <p class="form-input-hint">
                    Scheduled favicon update. This may take a while...
                </p>
            ''', html)

    def test_refresh_favicons_should_not_be_called_without_respective_form_action(self):
        with patch.object(tasks, 'schedule_refresh_favicons') as mock_schedule_refresh_favicons:
            form_data = {
            }
            response = self.client.post(reverse('bookmarks:settings.general'), form_data)
            html = response.content.decode()

            mock_schedule_refresh_favicons.assert_not_called()
            self.assertInHTML('''
                <p class="form-input-hint">
                    Scheduled favicon update. This may take a while...
                </p>
            ''', html, count=0)

    def test_refresh_favicons_should_be_visible_when_favicons_enabled_in_profile(self):
        profile = self.get_or_create_test_user().profile
        profile.enable_favicons = True
        profile.save()

        response = self.client.get(reverse('bookmarks:settings.general'))
        html = response.content.decode()

        self.assertInHTML('''
            <button class="btn mt-2" name="refresh_favicons">Refresh Favicons</button>
        ''', html, count=1)

    def test_refresh_favicons_should_not_be_visible_when_favicons_disabled_in_profile(self):
        profile = self.get_or_create_test_user().profile
        profile.enable_favicons = False
        profile.save()

        response = self.client.get(reverse('bookmarks:settings.general'))
        html = response.content.decode()

        self.assertInHTML('''
            <button class="btn mt-2" name="refresh_favicons">Refresh Favicons</button>
        ''', html, count=0)

    @override_settings(LD_ENABLE_REFRESH_FAVICONS=False)
    def test_refresh_favicons_should_not_be_visible_when_disabled(self):
        profile = self.get_or_create_test_user().profile
        profile.enable_favicons = True
        profile.save()

        response = self.client.get(reverse('bookmarks:settings.general'))
        html = response.content.decode()

        self.assertInHTML('''
            <button class="btn mt-2" name="refresh_favicons">Refresh Favicons</button>
        ''', html, count=0)

    def test_about_shows_version_info(self):
        response = self.client.get(reverse('bookmarks:settings.general'))
        html = response.content.decode()

        self.assertInHTML(f'''
            <tr>
                <td>Version</td>
                <td>{get_version_info(random.random())}</td>
            </tr>
        ''', html)

    def test_get_version_info_just_displays_latest_when_versions_are_equal(self):
        latest_version_response_mock = Mock(status_code=200, json=lambda: {'name': f'v{app_version}'})
        with patch.object(requests, 'get', return_value=latest_version_response_mock):
            version_info = get_version_info(random.random())
            self.assertEqual(version_info, f'{app_version} (latest)')

    def test_get_version_info_shows_latest_version_when_versions_are_not_equal(self):
        latest_version_response_mock = Mock(status_code=200, json=lambda: {'name': f'v123.0.1'})
        with patch.object(requests, 'get', return_value=latest_version_response_mock):
            version_info = get_version_info(random.random())
            self.assertEqual(version_info, f'{app_version} (latest: 123.0.1)')

    def test_get_version_info_silently_ignores_request_errors(self):
        with patch.object(requests, 'get', side_effect=RequestException()):
            version_info = get_version_info(random.random())
            self.assertEqual(version_info, f'{app_version}')

    def test_get_version_info_handles_invalid_response(self):
        latest_version_response_mock = Mock(status_code=403, json=lambda: {})
        with patch.object(requests, 'get', return_value=latest_version_response_mock):
            version_info = get_version_info(random.random())
            self.assertEqual(version_info, app_version)

        latest_version_response_mock = Mock(status_code=200, json=lambda: {})
        with patch.object(requests, 'get', return_value=latest_version_response_mock):
            version_info = get_version_info(random.random())
            self.assertEqual(version_info, app_version)