# Copyright 2016-2017 Versada <https://versada.eu/>
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).

import logging
import sys
from odoo.tests import TransactionCase
from odoo.tools import config
from odoo import exceptions

from ..hooks import initialize_sentry
from sentry_sdk.transport import HttpTransport
from sentry_sdk.integrations.logging import _IGNORED_LOGGERS


def remove_handler_ignore(handler_name):
    """Removes handlers of handlers ignored list.
    """
    _IGNORED_LOGGERS.discard(handler_name)


class TestException(exceptions.UserError):
    pass


class InMemoryTransport(HttpTransport):
    """A :class:`sentry_sdk.Hub.transport` subclass which simply stores events in a list.

    Extended based on the one found in raven-python to avoid additional testing
    dependencies: https://git.io/vyGO3
    """

    def __init__(self, *args, **kwargs):
        self.events = []

    def capture_event(self, event, *args, **kwargs):
        self.events.append(event)

    def has_event(self, event_level, event_msg):
        for event in self.events:
            if (event.get('level') == event_level and
                    event.get('logentry', {}).get('message') == event_msg):
                return True
        return False

    def flush(self, *args, **kwargs):
        pass

    def kill(self, *args, **kwargs):
        pass


class TestClientSetup(TransactionCase):

    def setUp(self):
        super(TestClientSetup, self).setUp()
        self.dsn = 'http://public:secret@example.com/1'
        config.options['sentry_enabled'] = True
        config.options['sentry_dsn'] = self.dsn
        self.client = initialize_sentry(config)._client
        self.client.transport = InMemoryTransport({'dsn': self.dsn})
        self.handler = self.client.integrations['logging']._handler

    def log(self, level, msg, exc_info=None):
        record = logging.LogRecord(
            __name__, level, __file__, 42, msg, (), exc_info)
        self.handler.emit(record)

    def assertEventCaptured(self, client, event_level, event_msg):
        self.assertTrue(
            client.transport.has_event(event_level, event_msg),
            msg='Event: "%s" was not captured' % event_msg
        )

    def assertEventNotCaptured(self, client, event_level, event_msg):
        self.assertFalse(
            client.transport.has_event(event_level, event_msg),
            msg='Event: "%s" was captured' % event_msg
        )

    def test_initialize_raven_sets_dsn(self):
        self.assertEqual(self.client.dsn, self.dsn)

    def test_capture_event(self):
        level, msg = logging.WARNING, 'Test event, can be ignored'
        self.log(level, msg)
        level = "warning"
        self.assertEventCaptured(self.client, level, msg)

    def test_capture_event_exc(self):
        level, msg = logging.WARNING, 'Test event, can be ignored exception'
        try:
            raise TestException(msg)
        except TestException:
            exc_info = sys.exc_info()
        self.log(level, msg, exc_info)
        level = "warning"
        self.assertEventCaptured(self.client, level, msg)

    def test_ignore_exceptions(self):
        config.options['sentry_ignore_exceptions'] = "odoo.exceptions.UserError"
        client = initialize_sentry(config)._client
        client.transport = InMemoryTransport({'dsn': self.dsn})
        level, msg = logging.WARNING, 'Test exception'
        try:
            raise exceptions.UserError(msg)
        except exceptions.UserError:
            exc_info = sys.exc_info()
        self.log(level, msg, exc_info)
        level = "warning"
        self.assertEventNotCaptured(client, level, msg)

    def test_exclude_logger(self):
        config.options['sentry_enabled'] = True
        config.options['sentry_exclude_loggers'] = __name__
        client = initialize_sentry(config)._client
        client.transport = InMemoryTransport({'dsn': self.dsn})
        level, msg = logging.WARNING, 'Test exclude logger %s' % __name__
        self.log(level, msg)
        level = "warning"
        # Revert ignored logger so it doesn't affect other tests
        remove_handler_ignore(__name__)
        self.assertEventNotCaptured(client, level, msg)