# SPDX-License-Identifier: Apache-2.0
#
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# this file be licensed under the Apache-2.0 license or a
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# 	http://www.apache.org/licenses/LICENSE-2.0
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import pickle

from pytest import raises

from opensearch_dsl import Q, serializer, utils


def test_attrdict_pickle():
    ad = utils.AttrDict({})

    pickled_ad = pickle.dumps(ad)
    assert ad == pickle.loads(pickled_ad)


def test_attrlist_pickle():
    al = utils.AttrList([])

    pickled_al = pickle.dumps(al)
    assert al == pickle.loads(pickled_al)


def test_attrlist_slice():
    class MyAttrDict(utils.AttrDict):
        pass

    l = utils.AttrList([{}, {}], obj_wrapper=MyAttrDict)
    assert isinstance(l[:][0], MyAttrDict)


def test_merge():
    a = utils.AttrDict({"a": {"b": 42, "c": 47}})
    b = {"a": {"b": 123, "d": -12}, "e": [1, 2, 3]}

    utils.merge(a, b)

    assert a == {"a": {"b": 123, "c": 47, "d": -12}, "e": [1, 2, 3]}


def test_merge_conflict():
    for d in (
        {"a": 42},
        {"a": {"b": 47}},
    ):
        utils.merge({"a": {"b": 42}}, d)
        with raises(ValueError):
            utils.merge({"a": {"b": 42}}, d, True)


def test_attrdict_bool():
    d = utils.AttrDict({})

    assert not d
    d.title = "Title"
    assert d


def test_attrlist_items_get_wrapped_during_iteration():
    al = utils.AttrList([1, object(), [1], {}])

    l = list(iter(al))

    assert isinstance(l[2], utils.AttrList)
    assert isinstance(l[3], utils.AttrDict)


def test_serializer_deals_with_Attr_versions():
    d = utils.AttrDict({"key": utils.AttrList([1, 2, 3])})

    assert serializer.serializer.dumps(d) == serializer.serializer.dumps(
        {"key": [1, 2, 3]}
    )


def test_serializer_deals_with_objects_with_to_dict():
    class MyClass(object):
        def to_dict(self):
            return 42

    assert serializer.serializer.dumps(MyClass()) == "42"


def test_recursive_to_dict():
    assert utils.recursive_to_dict({"k": [1, (1.0, {"v": Q("match", key="val")})]}) == {
        "k": [1, (1.0, {"v": {"match": {"key": "val"}}})]
    }


def test_attrdict_get():
    a = utils.AttrDict({"a": {"b": 42, "c": 47}})
    assert a.get("a", {}).get("b", 0) == 42
    assert a.get("a", {}).get("e", 0) == 0
    assert a.get("d", {}) == {}
    with raises(AttributeError):
        assert a.get("d")