# SPDX-License-Identifier: AGPL-3.0-or-later
# pylint: disable=missing-module-docstring

import json
from urllib.parse import ParseResult
from mock import Mock
from searx.results import Timing

import searx.search.processors
from searx.search import Search
from searx.preferences import Preferences
from tests import SearxTestCase


class ViewsTestCase(SearxTestCase):  # pylint: disable=missing-class-docstring, too-many-public-methods
    def setUp(self):
        # skip init function (no external HTTP request)
        def dummy(*args, **kwargs):  # pylint: disable=unused-argument
            pass

        self.setattr4test(searx.search.processors, 'initialize_processor', dummy)

        from searx import webapp  # pylint: disable=import-outside-toplevel

        webapp.app.config['TESTING'] = True  # to get better error messages
        self.app = webapp.app.test_client()

        # remove sha for the static file
        # so the tests don't have to care about the changing URLs
        for k in webapp.static_files:
            webapp.static_files[k] = None

        # set some defaults
        test_results = [
            {
                'content': 'first test content',
                'title': 'First Test',
                'url': 'http://first.test.xyz',
                'engines': ['youtube', 'startpage'],
                'engine': 'startpage',
                'parsed_url': ParseResult(
                    scheme='http', netloc='first.test.xyz', path='/', params='', query='', fragment=''
                ),
                'template': 'default.html',
            },
            {
                'content': 'second test content',
                'title': 'Second Test',
                'url': 'http://second.test.xyz',
                'engines': ['youtube', 'startpage'],
                'engine': 'youtube',
                'parsed_url': ParseResult(
                    scheme='http', netloc='second.test.xyz', path='/', params='', query='', fragment=''
                ),
                'template': 'default.html',
            },
        ]

        timings = [
            Timing(engine='startpage', total=0.8, load=0.7),
            Timing(engine='youtube', total=0.9, load=0.6),
        ]

        def search_mock(search_self, *args):  # pylint: disable=unused-argument
            search_self.result_container = Mock(
                get_ordered_results=lambda: test_results,
                answers={},
                corrections=set(),
                suggestions=set(),
                infoboxes=[],
                unresponsive_engines=set(),
                results=test_results,
                number_of_results=3,
                results_length=lambda: len(test_results),
                get_timings=lambda: timings,
                redirect_url=None,
                engine_data={},
            )

        self.setattr4test(Search, 'search', search_mock)

        original_preferences_get_value = Preferences.get_value

        def preferences_get_value(preferences_self, user_setting_name: str):
            if user_setting_name == 'theme':
                return 'simple'
            return original_preferences_get_value(preferences_self, user_setting_name)

        self.setattr4test(Preferences, 'get_value', preferences_get_value)

        # to see full diffs
        self.maxDiff = None  # pylint: disable=invalid-name

    def test_index_empty(self):
        result = self.app.post('/')
        self.assertEqual(result.status_code, 200)
        self.assertIn(
            b'<div class="title"><h1>SearXNG</h1></div>',
            result.data,
        )

    def test_index_html_post(self):
        result = self.app.post('/', data={'q': 'test'})
        self.assertEqual(result.status_code, 308)
        self.assertEqual(result.location, '/search')

    def test_index_html_get(self):
        result = self.app.post('/?q=test')
        self.assertEqual(result.status_code, 308)
        self.assertEqual(result.location, '/search?q=test')

    def test_search_empty_html(self):
        result = self.app.post('/search', data={'q': ''})
        self.assertEqual(result.status_code, 200)
        self.assertIn(b'<div class="title"><h1>SearXNG</h1></div>', result.data)

    def test_search_empty_json(self):
        result = self.app.post('/search', data={'q': '', 'format': 'json'})
        self.assertEqual(result.status_code, 400)

    def test_search_empty_csv(self):
        result = self.app.post('/search', data={'q': '', 'format': 'csv'})
        self.assertEqual(result.status_code, 400)

    def test_search_empty_rss(self):
        result = self.app.post('/search', data={'q': '', 'format': 'rss'})
        self.assertEqual(result.status_code, 400)

    def test_search_html(self):
        result = self.app.post('/search', data={'q': 'test'})

        self.assertIn(
            b'<span class="url_o1"><span class="url_i1">http://second.test.xyz</span></span>',
            result.data,
        )
        self.assertIn(
            b'<p class="content">\n    second <span class="highlight">test</span> ',
            result.data,
        )

    def test_index_json(self):
        result = self.app.post('/', data={'q': 'test', 'format': 'json'})
        self.assertEqual(result.status_code, 308)

    def test_search_json(self):
        result = self.app.post('/search', data={'q': 'test', 'format': 'json'})
        result_dict = json.loads(result.data.decode())

        self.assertEqual('test', result_dict['query'])
        self.assertEqual(len(result_dict['results']), 2)
        self.assertEqual(result_dict['results'][0]['content'], 'first test content')
        self.assertEqual(result_dict['results'][0]['url'], 'http://first.test.xyz')

    def test_index_csv(self):
        result = self.app.post('/', data={'q': 'test', 'format': 'csv'})
        self.assertEqual(result.status_code, 308)

    def test_search_csv(self):
        result = self.app.post('/search', data={'q': 'test', 'format': 'csv'})

        self.assertEqual(
            b'title,url,content,host,engine,score,type\r\n'
            b'First Test,http://first.test.xyz,first test content,first.test.xyz,startpage,,result\r\n'  # noqa
            b'Second Test,http://second.test.xyz,second test content,second.test.xyz,youtube,,result\r\n',  # noqa
            result.data,
        )

    def test_index_rss(self):
        result = self.app.post('/', data={'q': 'test', 'format': 'rss'})
        self.assertEqual(result.status_code, 308)

    def test_search_rss(self):
        result = self.app.post('/search', data={'q': 'test', 'format': 'rss'})

        self.assertIn(b'<description>Search results for "test" - searx</description>', result.data)

        self.assertIn(b'<opensearch:totalResults>3</opensearch:totalResults>', result.data)

        self.assertIn(b'<title>First Test</title>', result.data)

        self.assertIn(b'<link>http://first.test.xyz</link>', result.data)

        self.assertIn(b'<description>first test content</description>', result.data)

    def test_redirect_about(self):
        result = self.app.get('/about')
        self.assertEqual(result.status_code, 302)

    def test_info_page(self):
        result = self.app.get('/info/en/search-syntax')
        self.assertEqual(result.status_code, 200)
        self.assertIn(b'<h1>Search syntax</h1>', result.data)

    def test_health(self):
        result = self.app.get('/healthz')
        self.assertEqual(result.status_code, 200)
        self.assertIn(b'OK', result.data)

    def test_preferences(self):
        result = self.app.get('/preferences')
        self.assertEqual(result.status_code, 200)
        self.assertIn(b'<form id="search_form" method="post" action="/preferences"', result.data)
        self.assertIn(b'<div id="categories_container">', result.data)
        self.assertIn(b'<legend id="pref_ui_locale">Interface language</legend>', result.data)

    def test_browser_locale(self):
        result = self.app.get('/preferences', headers={'Accept-Language': 'zh-tw;q=0.8'})
        self.assertEqual(result.status_code, 200)
        self.assertIn(
            b'<option value="zh-Hant-TW" selected="selected">',
            result.data,
            'Interface locale ignored browser preference.',
        )
        self.assertIn(
            b'<option value="zh-Hant-TW" selected="selected">',
            result.data,
            'Search language ignored browser preference.',
        )

    def test_browser_empty_locale(self):
        result = self.app.get('/preferences', headers={'Accept-Language': ''})
        self.assertEqual(result.status_code, 200)
        self.assertIn(
            b'<option value="en" selected="selected">', result.data, 'Interface locale ignored browser preference.'
        )

    def test_locale_occitan(self):
        result = self.app.get('/preferences?locale=oc')
        self.assertEqual(result.status_code, 200)
        self.assertIn(
            b'<option value="oc" selected="selected">', result.data, 'Interface locale ignored browser preference.'
        )

    def test_stats(self):
        result = self.app.get('/stats')
        self.assertEqual(result.status_code, 200)
        self.assertIn(b'<h1>Engine stats</h1>', result.data)

    def test_robots_txt(self):
        result = self.app.get('/robots.txt')
        self.assertEqual(result.status_code, 200)
        self.assertIn(b'Allow: /', result.data)

    def test_opensearch_xml(self):
        result = self.app.get('/opensearch.xml')
        self.assertEqual(result.status_code, 200)
        self.assertIn(
            b'<Description>SearXNG is a metasearch engine that respects your privacy.</Description>', result.data
        )

    def test_favicon(self):
        result = self.app.get('/favicon.ico')
        self.assertEqual(result.status_code, 200)

    def test_config(self):
        result = self.app.get('/config')
        self.assertEqual(result.status_code, 200)
        json_result = result.get_json()
        self.assertTrue(json_result)