# SPDX-FileCopyrightText: 2020 The Magma Authors.
# SPDX-FileCopyrightText: 2022 Open Networking Foundation <support@opennetworking.org>
#
# SPDX-License-Identifier: BSD-3-Clause

from unittest import TestCase, main

import fakeredis
from common.redis.containers import RedisFlatDict, RedisHashDict
from common.redis.serializers import (
    RedisSerde,
    get_proto_deserializer,
    get_proto_serializer,
)
from orc8r.protos.service303_pb2 import LogVerbosity


class RedisDictTests(TestCase):
    """
    Tests for the RedisHashDict and RedisFlatDict containers
    """

    def setUp(self):
        client = fakeredis.FakeStrictRedis()
        # Use arbitrary orc8r proto to test with
        self._hash_dict = RedisHashDict(
            client,
            "unittest",
            get_proto_serializer(),
            get_proto_deserializer(LogVerbosity),
        )

        serde = RedisSerde(
            'log_verbosity',
            get_proto_serializer(),
            get_proto_deserializer(LogVerbosity),
        )
        self._flat_dict = RedisFlatDict(client, serde)

    def test_hash_insert(self):
        expected = LogVerbosity(verbosity=0)
        expected2 = LogVerbosity(verbosity=1)

        # insert proto
        self._hash_dict['key1'] = expected
        version = self._hash_dict.get_version("key1")
        actual = self._hash_dict['key1']
        self.assertEqual(1, version)
        self.assertEqual(expected, actual)

        # update proto
        self._hash_dict['key1'] = expected2
        version2 = self._hash_dict.get_version("key1")
        actual2 = self._hash_dict['key1']
        self.assertEqual(2, version2)
        self.assertEqual(expected2, actual2)

    def test_missing_version(self):
        missing_version = self._hash_dict.get_version("key2")
        self.assertEqual(0, missing_version)

    def test_hash_delete(self):
        expected = LogVerbosity(verbosity=2)
        self._hash_dict['key3'] = expected

        actual = self._hash_dict['key3']
        self.assertEqual(expected, actual)

        self._hash_dict.pop('key3')
        self.assertRaises(KeyError, self._hash_dict.__getitem__, 'key3')

    def test_flat_insert(self):
        expected = LogVerbosity(verbosity=5)
        expected2 = LogVerbosity(verbosity=1)

        # insert proto
        self._flat_dict['key1'] = expected
        version = self._flat_dict.get_version("key1")
        actual = self._flat_dict['key1']
        self.assertEqual(1, version)
        self.assertEqual(expected, actual)

        # update proto
        self._flat_dict["key1"] = expected2
        version2 = self._flat_dict.get_version("key1")
        actual2 = self._flat_dict["key1"]
        actual3 = self._flat_dict.get("key1")
        self.assertEqual(2, version2)
        self.assertEqual(expected2, actual2)
        self.assertEqual(expected2, actual3)

    def test_flat_missing_version(self):
        missing_version = self._flat_dict.get_version("key2")
        self.assertEqual(0, missing_version)

    def test_flat_bad_key(self):
        expected = LogVerbosity(verbosity=2)
        self.assertRaises(
            ValueError, self._flat_dict.__setitem__,
            'bad:key', expected,
        )
        self.assertRaises(
            ValueError, self._flat_dict.__getitem__,
            'bad:key',
        )
        self.assertRaises(
            ValueError, self._flat_dict.__delitem__,
            'bad:key',
        )

    def test_flat_delete(self):
        expected = LogVerbosity(verbosity=2)
        self._flat_dict['key3'] = expected

        actual = self._flat_dict['key3']
        self.assertEqual(expected, actual)

        del self._flat_dict['key3']
        self.assertRaises(
            KeyError, self._flat_dict.__getitem__,
            'key3',
        )
        self.assertEqual(None, self._flat_dict.get('key3'))

    def test_flat_clear(self):
        expected = LogVerbosity(verbosity=2)
        self._flat_dict['key3'] = expected

        actual = self._flat_dict['key3']
        self.assertEqual(expected, actual)

        self._flat_dict.clear()
        self.assertEqual(0, len(self._flat_dict.keys()))

    def test_flat_garbage_methods(self):
        expected = LogVerbosity(verbosity=2)
        expected2 = LogVerbosity(verbosity=3)

        key = "k1"
        key2 = "k2"
        bad_key = "bad_key"
        self._flat_dict[key] = expected
        self._flat_dict[key2] = expected2

        self._flat_dict.mark_as_garbage(key)
        is_garbage = self._flat_dict.is_garbage(key)
        self.assertTrue(is_garbage)
        is_garbage2 = self._flat_dict.is_garbage(key2)
        self.assertFalse(is_garbage2)

        self.assertEqual([key], self._flat_dict.garbage_keys())
        self.assertEqual([key2], self._flat_dict.keys())

        self.assertIsNone(self._flat_dict.get(key))
        self.assertEqual(expected2, self._flat_dict.get(key2))

        deleted = self._flat_dict.delete_garbage(key)
        not_deleted = self._flat_dict.delete_garbage(key2)
        self.assertTrue(deleted)
        self.assertFalse(not_deleted)

        self.assertIsNone(self._flat_dict.get(key))
        self.assertEqual(expected2, self._flat_dict.get(key2))

        with self.assertRaises(KeyError):
            self._flat_dict.is_garbage(bad_key)
        with self.assertRaises(KeyError):
            self._flat_dict.mark_as_garbage(bad_key)


if __name__ == "__main__":
    main()