import mock
from unittest import TestCase

import requests
from redash.query_runner import BaseHTTPQueryRunner


class RequiresAuthQueryRunner(BaseHTTPQueryRunner):
    requires_authentication = True


class TestBaseHTTPQueryRunner(TestCase):

    def test_requires_authentication_default(self):
        self.assertFalse(BaseHTTPQueryRunner.requires_authentication)
        schema = BaseHTTPQueryRunner.configuration_schema()
        self.assertNotIn('username', schema['required'])
        self.assertNotIn('password', schema['required'])

    def test_requires_authentication_true(self):
        schema = RequiresAuthQueryRunner.configuration_schema()
        self.assertIn('username', schema['required'])
        self.assertIn('password', schema['required'])

    def test_get_auth_with_values(self):
        query_runner = BaseHTTPQueryRunner({
            'username': 'username',
            'password': 'password'
        })
        self.assertEqual(query_runner.get_auth(), ('username', 'password'))

    def test_get_auth_empty(self):
        query_runner = BaseHTTPQueryRunner({})
        self.assertIsNone(query_runner.get_auth())

    def test_get_auth_empty_requires_authentication(self):
        query_runner = RequiresAuthQueryRunner({})
        self.assertRaisesRegexp(
            ValueError,
            "Username and Password required",
            query_runner.get_auth
        )

    @mock.patch('requests.request')
    def test_get_response_success(self, mock_get):
        mock_response = mock.Mock()
        mock_response.status_code = 200
        mock_response.text = "Success"
        mock_get.return_value = mock_response

        url = 'https://example.com/'
        query_runner = BaseHTTPQueryRunner({})
        response, error = query_runner.get_response(url)
        mock_get.assert_called_once_with('get', url, auth=None)
        self.assertEqual(response.status_code, 200)
        self.assertIsNone(error)

    @mock.patch('requests.request')
    def test_get_response_success_custom_auth(self, mock_get):
        mock_response = mock.Mock()
        mock_response.status_code = 200
        mock_response.text = "Success"
        mock_get.return_value = mock_response

        url = 'https://example.com/'
        query_runner = BaseHTTPQueryRunner({})
        auth = ('username', 'password')
        response, error = query_runner.get_response(url, auth=auth)
        mock_get.assert_called_once_with('get', url, auth=auth)
        self.assertEqual(response.status_code, 200)
        self.assertIsNone(error)

    @mock.patch('requests.request')
    def test_get_response_failure(self, mock_get):
        mock_response = mock.Mock()
        mock_response.status_code = 301
        mock_response.text = "Redirect"
        mock_get.return_value = mock_response

        url = 'https://example.com/'
        query_runner = BaseHTTPQueryRunner({})
        response, error = query_runner.get_response(url)
        mock_get.assert_called_once_with('get', url, auth=None)
        self.assertIn(query_runner.response_error, error)

    @mock.patch('requests.request')
    def test_get_response_httperror_exception(self, mock_get):
        mock_response = mock.Mock()
        mock_response.status_code = 500
        mock_response.text = "Server Error"
        http_error = requests.HTTPError()
        mock_response.raise_for_status.side_effect = http_error
        mock_get.return_value = mock_response

        url = 'https://example.com/'
        query_runner = BaseHTTPQueryRunner({})
        response, error = query_runner.get_response(url)
        mock_get.assert_called_once_with('get', url, auth=None)
        self.assertIsNotNone(error)
        self.assertIn("Failed to execute query", error)

    @mock.patch('requests.request')
    def test_get_response_requests_exception(self, mock_get):
        mock_response = mock.Mock()
        mock_response.status_code = 500
        mock_response.text = "Server Error"
        exception_message = "Some requests exception"
        requests_exception = requests.RequestException(exception_message)
        mock_response.raise_for_status.side_effect = requests_exception
        mock_get.return_value = mock_response

        url = 'https://example.com/'
        query_runner = BaseHTTPQueryRunner({})
        response, error = query_runner.get_response(url)
        mock_get.assert_called_once_with('get', url, auth=None)
        self.assertIsNotNone(error)
        self.assertEqual(exception_message, error)

    @mock.patch('requests.request')
    def test_get_response_generic_exception(self, mock_get):
        mock_response = mock.Mock()
        mock_response.status_code = 500
        mock_response.text = "Server Error"
        exception_message = "Some generic exception"
        exception = ValueError(exception_message)
        mock_response.raise_for_status.side_effect = exception
        mock_get.return_value = mock_response

        url = 'https://example.com/'
        query_runner = BaseHTTPQueryRunner({})
        self.assertRaisesRegexp(
            ValueError,
            exception_message,
            query_runner.get_response,
            url
        )