# -*- coding: utf-8; -*-

import datetime
from unittest.mock import patch

from wuttjamaican import problems as mod
from wuttjamaican.testing import ConfigTestCase


class TestProblemCheck(ConfigTestCase):

    def make_check(self):
        return mod.ProblemCheck(self.config)

    def test_system_key(self):
        check = self.make_check()
        self.assertRaises(AttributeError, getattr, check, 'system_key')

    def test_problem_key(self):
        check = self.make_check()
        self.assertRaises(AttributeError, getattr, check, 'problem_key')

    def test_title(self):
        check = self.make_check()
        self.assertRaises(AttributeError, getattr, check, 'title')

    def test_find_problems(self):
        check = self.make_check()
        problems = check.find_problems()
        self.assertEqual(problems, [])

    def test_get_email_context(self):
        check = self.make_check()
        problems = check.find_problems()
        context = check.get_email_context(problems)
        self.assertEqual(context, {})

    def test_make_email_attachments(self):
        check = self.make_check()
        problems = check.find_problems()
        context = check.get_email_context(problems)
        attachments = check.make_email_attachments(context)
        self.assertIsNone(attachments)


class FakeProblemCheck(mod.ProblemCheck):
    system_key = 'wuttatest'
    problem_key = 'fake_check'
    title = "Fake problem check"

    # def find_problems(self):
    #     return [{'foo': 'bar'}]


class TestProblemHandler(ConfigTestCase):

    def setUp(self):
        super().setUp()
        self.handler = self.make_handler()

    def make_handler(self):
        return mod.ProblemHandler(self.config)

    def test_get_all_problem_checks(self):

        # no checks by default
        checks = self.handler.get_all_problem_checks()
        self.assertIsInstance(checks, list)
        self.assertEqual(len(checks), 0)

        # but let's configure our fake check
        self.config.setdefault('wutta.problems.modules', 'tests.test_problems')
        checks = self.handler.get_all_problem_checks()
        self.assertIsInstance(checks, list)
        self.assertEqual(len(checks), 1)

    def test_filtered_problem_checks(self):

        # no checks by default
        checks = self.handler.filter_problem_checks()
        self.assertIsInstance(checks, list)
        self.assertEqual(len(checks), 0)

        # but let's configure our fake check
        self.config.setdefault('wutta.problems.modules', 'tests.test_problems')
        checks = self.handler.filter_problem_checks()
        self.assertIsInstance(checks, list)
        self.assertEqual(len(checks), 1)

        # filter by system_key
        checks = self.handler.filter_problem_checks(systems=['wuttatest'])
        self.assertEqual(len(checks), 1)
        checks = self.handler.filter_problem_checks(systems=['something_else'])
        self.assertEqual(len(checks), 0)

        # filter by problem_key
        checks = self.handler.filter_problem_checks(problems=['fake_check'])
        self.assertEqual(len(checks), 1)
        checks = self.handler.filter_problem_checks(problems=['something_else'])
        self.assertEqual(len(checks), 0)

        # filter by both
        checks = self.handler.filter_problem_checks(systems=['wuttatest'], problems=['fake_check'])
        self.assertEqual(len(checks), 1)
        checks = self.handler.filter_problem_checks(systems=['wuttatest'], problems=['bad_check'])
        self.assertEqual(len(checks), 0)

    def test_get_supported_systems(self):

        # no checks by default
        systems = self.handler.get_supported_systems()
        self.assertIsInstance(systems, list)
        self.assertEqual(len(systems), 0)

        # but let's configure our fake check
        self.config.setdefault('wutta.problems.modules', 'tests.test_problems')
        systems = self.handler.get_supported_systems()
        self.assertIsInstance(systems, list)
        self.assertEqual(systems, ['wuttatest'])

    def test_get_system_title(self):
        title = self.handler.get_system_title('wutta')
        self.assertEqual(title, 'wutta')

    def test_is_enabled(self):
        check = FakeProblemCheck(self.config)

        # enabled by default
        self.assertTrue(self.handler.is_enabled(check))

        # config can disable
        self.config.setdefault('wutta.problems.wuttatest.fake_check.enabled', 'false')
        self.assertFalse(self.handler.is_enabled(check))

    def test_should_run_for_weekday(self):
        check = FakeProblemCheck(self.config)

        # should run by default
        for weekday in range(7):
            self.assertTrue(self.handler.should_run_for_weekday(check, weekday))

        # config can disable, e.g. for weekends
        self.config.setdefault('wutta.problems.wuttatest.fake_check.day5', 'false')
        self.config.setdefault('wutta.problems.wuttatest.fake_check.day6', 'false')
        for weekday in range(5):
            self.assertTrue(self.handler.should_run_for_weekday(check, weekday))
        for weekday in (5, 6):
            self.assertFalse(self.handler.should_run_for_weekday(check, weekday))

    def test_organize_problem_checks(self):
        checks = [FakeProblemCheck]

        organized = self.handler.organize_problem_checks(checks)
        self.assertIsInstance(organized, dict)
        self.assertEqual(list(organized), ['wuttatest'])
        self.assertIsInstance(organized['wuttatest'], dict)
        self.assertEqual(list(organized['wuttatest']), ['fake_check'])
        self.assertIs(organized['wuttatest']['fake_check'], FakeProblemCheck)

    def test_find_problems(self):
        check = FakeProblemCheck(self.config)
        problems = self.handler.find_problems(check)
        self.assertEqual(problems, [])

    def test_get_email_key(self):
        check = FakeProblemCheck(self.config)
        key = self.handler.get_email_key(check)
        self.assertEqual(key, 'wuttatest_problems_fake_check')

    def test_get_global_email_context(self):
        context = self.handler.get_global_email_context()
        self.assertEqual(context, {})

    def test_get_check_email_context(self):
        check = FakeProblemCheck(self.config)
        problems = []
        context = self.handler.get_check_email_context(check, problems)
        self.assertEqual(context, {'system_title': 'wuttatest'})

    def test_send_problem_report(self):
        check = FakeProblemCheck(self.config)
        problems = []
        with patch.object(self.app, 'send_email') as send_email:
            self.handler.send_problem_report(check, problems)
            send_email.assert_called_once_with('wuttatest_problems_fake_check', {
                'system_title': 'wuttatest',
                'config': self.config,
                'app': self.app,
                'check': check,
                'problems': problems,
            }, default_subject="Fake problem check", attachments=None)

    def test_run_problem_check(self):
        with patch.object(FakeProblemCheck, 'find_problems') as find_problems:
            with patch.object(self.handler, 'send_problem_report') as send_problem_report:

                # check runs by default
                find_problems.return_value = [{'foo': 'bar'}]
                problems = self.handler.run_problem_check(FakeProblemCheck)
                self.assertEqual(problems, [{'foo': 'bar'}])
                find_problems.assert_called_once_with()
                send_problem_report.assert_called_once()

                # does not run if generally disabled
                find_problems.reset_mock()
                send_problem_report.reset_mock()
                with patch.object(self.handler, 'is_enabled', return_value=False):
                    problems = self.handler.run_problem_check(FakeProblemCheck)
                    self.assertIsNone(problems)
                    find_problems.assert_not_called()
                    send_problem_report.assert_not_called()

                    # unless caller gives force flag
                    problems = self.handler.run_problem_check(FakeProblemCheck, force=True)
                    self.assertEqual(problems, [{'foo': 'bar'}])
                    find_problems.assert_called_once_with()
                    send_problem_report.assert_called_once()

                # does not run if disabled for weekday
                find_problems.reset_mock()
                send_problem_report.reset_mock()
                weekday = datetime.date.today().weekday()
                self.config.setdefault(f'wutta.problems.wuttatest.fake_check.day{weekday}', 'false')
                problems = self.handler.run_problem_check(FakeProblemCheck)
                self.assertIsNone(problems)
                find_problems.assert_not_called()
                send_problem_report.assert_not_called()

                # unless caller gives force flag
                problems = self.handler.run_problem_check(FakeProblemCheck, force=True)
                self.assertEqual(problems, [{'foo': 'bar'}])
                find_problems.assert_called_once_with()
                send_problem_report.assert_called_once()

    def test_run_problem_checks(self):
        with patch.object(FakeProblemCheck, 'find_problems') as find_problems:
            with patch.object(self.handler, 'send_problem_report') as send_problem_report:

                # check runs by default
                find_problems.return_value = [{'foo': 'bar'}]
                self.handler.run_problem_checks([FakeProblemCheck])
                find_problems.assert_called_once_with()
                send_problem_report.assert_called_once()

                # does not run if generally disabled
                find_problems.reset_mock()
                send_problem_report.reset_mock()
                with patch.object(self.handler, 'is_enabled', return_value=False):
                    self.handler.run_problem_checks([FakeProblemCheck])
                    find_problems.assert_not_called()
                    send_problem_report.assert_not_called()

                    # unless caller gives force flag
                    self.handler.run_problem_checks([FakeProblemCheck], force=True)
                    find_problems.assert_called_once_with()
                    send_problem_report.assert_called_once()

                # does not run if disabled for weekday
                find_problems.reset_mock()
                send_problem_report.reset_mock()
                weekday = datetime.date.today().weekday()
                self.config.setdefault(f'wutta.problems.wuttatest.fake_check.day{weekday}', 'false')
                self.handler.run_problem_checks([FakeProblemCheck])
                find_problems.assert_not_called()
                send_problem_report.assert_not_called()

                # unless caller gives force flag
                self.handler.run_problem_checks([FakeProblemCheck], force=True)
                find_problems.assert_called_once_with()
                send_problem_report.assert_called_once()