import pickle

import pytest

import gitlab
from gitlab import base


class FakeGitlab:
    pass


class FakeObject(base.RESTObject):
    pass


class FakeManager(base.RESTManager):
    _obj_cls = FakeObject
    _path = "/tests"


class FakeParent:
    id = 42


class FakeManagerWithParent(base.RESTManager):
    _path = "/tests/{test_id}/cases"
    _obj_cls = FakeObject
    _from_parent_attrs = {"test_id": "id"}


@pytest.fixture
def fake_gitlab():
    return FakeGitlab()


@pytest.fixture
def fake_manager(fake_gitlab):
    return FakeManager(fake_gitlab)


@pytest.fixture
def fake_manager_with_parent(fake_gitlab):
    return FakeManagerWithParent(fake_gitlab, parent=FakeParent)


@pytest.fixture
def fake_object(fake_manager):
    return FakeObject(fake_manager, {"attr1": "foo", "alist": [1, 2, 3]})


@pytest.fixture
def fake_object_with_parent(fake_manager_with_parent):
    return FakeObject(fake_manager_with_parent, {"attr1": "foo", "alist": [1, 2, 3]})


class TestRESTManager:
    def test_computed_path_simple(self):
        class MGR(base.RESTManager):
            _path = "/tests"
            _obj_cls = object

        mgr = MGR(FakeGitlab())
        assert mgr._computed_path == "/tests"

    def test_computed_path_with_parent(self):
        class MGR(base.RESTManager):
            _path = "/tests/{test_id}/cases"
            _obj_cls = object
            _from_parent_attrs = {"test_id": "id"}

        class Parent:
            id = 42

        mgr = MGR(FakeGitlab(), parent=Parent())
        assert mgr._computed_path == "/tests/42/cases"

    def test_path_property(self):
        class MGR(base.RESTManager):
            _path = "/tests"
            _obj_cls = object

        mgr = MGR(FakeGitlab())
        assert mgr.path == "/tests"


class TestRESTObject:
    def test_instantiate(self, fake_gitlab, fake_manager):
        attrs = {"foo": "bar"}
        obj = FakeObject(fake_manager, attrs.copy())

        assert attrs == obj._attrs
        assert {} == obj._updated_attrs
        assert obj._create_managers() is None
        assert fake_manager == obj.manager
        assert fake_gitlab == obj.manager.gitlab
        assert str(obj) == f"{type(obj)} => {attrs}"

    def test_instantiate_non_dict(self, fake_gitlab, fake_manager):
        with pytest.raises(gitlab.exceptions.GitlabParsingError):
            FakeObject(fake_manager, ["a", "list", "fails"])

    def test_missing_attribute_does_not_raise_custom(self, fake_gitlab, fake_manager):
        """Ensure a missing attribute does not raise our custom error message
        if the RESTObject was not created from a list"""
        obj = FakeObject(manager=fake_manager, attrs={"foo": "bar"})
        with pytest.raises(AttributeError) as excinfo:
            obj.missing_attribute
        exc_str = str(excinfo.value)
        assert "missing_attribute" in exc_str
        assert "was created via a list()" not in exc_str
        assert base._URL_ATTRIBUTE_ERROR not in exc_str

    def test_missing_attribute_from_list_raises_custom(self, fake_gitlab, fake_manager):
        """Ensure a missing attribute raises our custom error message if the
        RESTObject was created from a list"""
        obj = FakeObject(
            manager=fake_manager, attrs={"foo": "bar"}, created_from_list=True
        )
        with pytest.raises(AttributeError) as excinfo:
            obj.missing_attribute
        exc_str = str(excinfo.value)
        assert "missing_attribute" in exc_str
        assert "was created via a list()" in exc_str
        assert base._URL_ATTRIBUTE_ERROR in exc_str

    def test_picklability(self, fake_manager):
        obj = FakeObject(fake_manager, {"foo": "bar"})
        original_obj_module = obj._module
        pickled = pickle.dumps(obj)
        unpickled = pickle.loads(pickled)
        assert isinstance(unpickled, FakeObject)
        assert hasattr(unpickled, "_module")
        assert unpickled._module == original_obj_module
        pickle.dumps(unpickled)

    def test_attrs(self, fake_manager):
        obj = FakeObject(fake_manager, {"foo": "bar"})

        assert "bar" == obj.foo
        with pytest.raises(AttributeError):
            getattr(obj, "bar")

        obj.bar = "baz"
        assert "baz" == obj.bar
        assert {"foo": "bar"} == obj._attrs
        assert {"bar": "baz"} == obj._updated_attrs

    def test_get_id(self, fake_manager):
        obj = FakeObject(fake_manager, {"foo": "bar"})
        obj.id = 42
        assert 42 == obj.get_id()

        obj.id = None
        assert obj.get_id() is None

    def test_encoded_id(self, fake_manager):
        obj = FakeObject(fake_manager, {"foo": "bar"})
        obj.id = 42
        assert 42 == obj.encoded_id

        obj.id = None
        assert obj.encoded_id is None

        obj.id = "plain"
        assert "plain" == obj.encoded_id

        obj.id = "a/path"
        assert "a%2Fpath" == obj.encoded_id

        # If you assign it again it does not double URL-encode
        obj.id = obj.encoded_id
        assert "a%2Fpath" == obj.encoded_id

    def test_custom_id_attr(self, fake_manager):
        class OtherFakeObject(FakeObject):
            _id_attr = "foo"

        obj = OtherFakeObject(fake_manager, {"foo": "bar"})
        assert "bar" == obj.get_id()

    def test_update_attrs(self, fake_manager):
        obj = FakeObject(fake_manager, {"foo": "bar"})
        obj.bar = "baz"
        obj._update_attrs({"foo": "foo", "bar": "bar"})
        assert {"foo": "foo", "bar": "bar"} == obj._attrs
        assert {} == obj._updated_attrs

    def test_update_attrs_deleted(self, fake_manager):
        obj = FakeObject(fake_manager, {"foo": "foo", "bar": "bar"})
        obj.bar = "baz"
        obj._update_attrs({"foo": "foo"})
        assert {"foo": "foo"} == obj._attrs
        assert {} == obj._updated_attrs

    def test_dir_unique(self, fake_manager):
        obj = FakeObject(fake_manager, {"manager": "foo"})
        assert len(dir(obj)) == len(set(dir(obj)))

    def test_create_managers(self, fake_gitlab, fake_manager):
        class ObjectWithManager(FakeObject):
            fakes: "FakeManager"

        obj = ObjectWithManager(fake_manager, {"foo": "bar"})
        obj.id = 42
        assert isinstance(obj.fakes, FakeManager)
        assert obj.fakes.gitlab == fake_gitlab
        assert obj.fakes._parent == obj

    def test_equality(self, fake_manager):
        obj1 = FakeObject(fake_manager, {"id": "foo"})
        obj2 = FakeObject(fake_manager, {"id": "foo", "other_attr": "bar"})
        assert obj1 == obj2
        assert len(set((obj1, obj2))) == 1

    def test_equality_custom_id(self, fake_manager):
        class OtherFakeObject(FakeObject):
            _id_attr = "foo"

        obj1 = OtherFakeObject(fake_manager, {"foo": "bar"})
        obj2 = OtherFakeObject(fake_manager, {"foo": "bar", "other_attr": "baz"})
        assert obj1 == obj2

    def test_equality_no_id(self, fake_manager):
        obj1 = FakeObject(fake_manager, {"attr1": "foo"})
        obj2 = FakeObject(fake_manager, {"attr1": "bar"})
        assert not obj1 == obj2

    def test_inequality(self, fake_manager):
        obj1 = FakeObject(fake_manager, {"id": "foo"})
        obj2 = FakeObject(fake_manager, {"id": "bar"})
        assert obj1 != obj2

    def test_inequality_no_id(self, fake_manager):
        obj1 = FakeObject(fake_manager, {"attr1": "foo"})
        obj2 = FakeObject(fake_manager, {"attr1": "bar"})
        assert obj1 != obj2
        assert len(set((obj1, obj2))) == 2

    def test_equality_with_other_objects(self, fake_manager):
        obj1 = FakeObject(fake_manager, {"id": "foo"})
        obj2 = None
        assert not obj1 == obj2

    def test_dunder_str(self, fake_manager):
        fake_object = FakeObject(fake_manager, {"attr1": "foo"})
        assert str(fake_object) == (
            "<class 'tests.unit.test_base.FakeObject'> => {'attr1': 'foo'}"
        )

    @pytest.mark.parametrize(
        "id_attr,repr_attr, attrs, expected_repr",
        [
            ("id", None, {"id": 1}, "<ReprObject id:1>"),
            (
                "id",
                "name",
                {"id": 1, "name": "fake"},
                "<ReprObject id:1 name:fake>",
            ),
            ("name", "name", {"name": "fake"}, "<ReprObject name:fake>"),
            ("id", "name", {"id": 1}, "<ReprObject id:1>"),
            (None, None, {}, "<ReprObject>"),
            (None, "name", {"name": "fake"}, "<ReprObject name:fake>"),
            (None, "name", {}, "<ReprObject>"),
        ],
        ids=[
            "GetMixin with id",
            "GetMixin with id and _repr_attr",
            "GetMixin with _repr_attr matching _id_attr",
            "GetMixin with _repr_attr without _repr_attr value defined",
            "GetWithoutIDMixin",
            "GetWithoutIDMixin with _repr_attr",
            "GetWithoutIDMixin with _repr_attr without _repr_attr value defined",
        ],
    )
    def test_dunder_repr(self, fake_manager, id_attr, repr_attr, attrs, expected_repr):
        class ReprObject(FakeObject):
            _id_attr = id_attr
            _repr_attr = repr_attr

        fake_object = ReprObject(fake_manager, attrs)

        assert repr(fake_object) == expected_repr

    def test_pformat(self, fake_manager):
        fake_object = FakeObject(
            fake_manager, {"attr1": "foo" * 10, "ham": "eggs" * 15}
        )
        assert fake_object.pformat() == (
            "<class 'tests.unit.test_base.FakeObject'> => "
            "\n{'attr1': 'foofoofoofoofoofoofoofoofoofoo',\n"
            " 'ham': 'eggseggseggseggseggseggseggseggseggseggseggseggseggseggseggs'}"
        )

    def test_pprint(self, capfd, fake_manager):
        fake_object = FakeObject(
            fake_manager, {"attr1": "foo" * 10, "ham": "eggs" * 15}
        )
        result = fake_object.pprint()
        assert result is None
        stdout, stderr = capfd.readouterr()
        assert stdout == (
            "<class 'tests.unit.test_base.FakeObject'> => "
            "\n{'attr1': 'foofoofoofoofoofoofoofoofoofoo',\n"
            " 'ham': 'eggseggseggseggseggseggseggseggseggseggseggseggseggseggseggs'}\n"
        )
        assert stderr == ""

    def test_repr(self, fake_manager):
        attrs = {"attr1": "foo"}
        obj = FakeObject(fake_manager, attrs)
        assert repr(obj) == "<FakeObject id:None>"

        FakeObject._id_attr = None
        assert repr(obj) == "<FakeObject>"

    def test_attributes_get(self, fake_object):
        assert fake_object.attr1 == "foo"
        result = fake_object.attributes
        assert result == {"attr1": "foo", "alist": [1, 2, 3]}

    def test_attributes_shows_updates(self, fake_object):
        # Updated attribute value is reflected in `attributes`
        fake_object.attr1 = "hello"
        assert fake_object.attributes == {"attr1": "hello", "alist": [1, 2, 3]}
        assert fake_object.attr1 == "hello"
        # New attribute is in `attributes`
        fake_object.new_attrib = "spam"
        assert fake_object.attributes == {
            "attr1": "hello",
            "new_attrib": "spam",
            "alist": [1, 2, 3],
        }

    def test_attributes_is_copy(self, fake_object):
        # Modifying the dictionary does not cause modifications to the object
        result = fake_object.attributes
        result["alist"].append(10)
        assert result == {"attr1": "foo", "alist": [1, 2, 3, 10]}
        assert fake_object.attributes == {"attr1": "foo", "alist": [1, 2, 3]}

    def test_attributes_has_parent_attrs(self, fake_object_with_parent):
        assert fake_object_with_parent.attr1 == "foo"
        result = fake_object_with_parent.attributes
        assert result == {"attr1": "foo", "alist": [1, 2, 3], "test_id": "42"}

    def test_asdict(self, fake_object):
        assert fake_object.attr1 == "foo"
        result = fake_object.asdict()
        assert result == {"attr1": "foo", "alist": [1, 2, 3]}

    def test_asdict_no_parent_attrs(self, fake_object_with_parent):
        assert fake_object_with_parent.attr1 == "foo"
        result = fake_object_with_parent.asdict()
        assert result == {"attr1": "foo", "alist": [1, 2, 3]}
        assert "test_id" not in fake_object_with_parent.asdict()
        assert "test_id" not in fake_object_with_parent.asdict(with_parent_attrs=False)
        assert "test_id" in fake_object_with_parent.asdict(with_parent_attrs=True)

    def test_asdict_modify_dict_does_not_change_object(self, fake_object):
        result = fake_object.asdict()
        # Demonstrate modifying the dictionary does not modify the object
        result["attr1"] = "testing"
        result["alist"].append(4)
        assert result == {"attr1": "testing", "alist": [1, 2, 3, 4]}
        assert fake_object.attr1 == "foo"
        assert fake_object.alist == [1, 2, 3]

    def test_asdict_modify_dict_does_not_change_object2(self, fake_object):
        # Modify attribute and then ensure modifying a list in the returned dict won't
        # modify the list in the object.
        fake_object.attr1 = [9, 7, 8]
        assert fake_object.asdict() == {
            "attr1": [9, 7, 8],
            "alist": [1, 2, 3],
        }
        result = fake_object.asdict()
        result["attr1"].append(1)
        assert fake_object.asdict() == {
            "attr1": [9, 7, 8],
            "alist": [1, 2, 3],
        }

    def test_asdict_modify_object(self, fake_object):
        # asdict() returns the updated value
        fake_object.attr1 = "spam"
        assert fake_object.asdict() == {"attr1": "spam", "alist": [1, 2, 3]}