from datetime import datetime
from typing import Optional

import pytest

import odmantic
from odmantic.field import Field
from odmantic.model import EmbeddedModel, Model
from odmantic.reference import Reference


def test_field_defined_as_primary_key_and_custom_name():
    with pytest.raises(
        ValueError, match="cannot specify a primary field with a custom key_name"
    ):
        Field(primary_field=True, key_name="not _id")


def test_field_defined_as_primary_key_default_name():
    f = Field(primary_field=True)
    assert f.key_name == "_id"


def test_field_define_key_as__id_without_setting_as_primary():
    with pytest.raises(
        ValueError,
        match="cannot specify key_name='_id' without defining the field as primary",
    ):
        Field(key_name="_id")


def test_pos_key_name():
    class M(Model):
        field: int = Field(key_name="alternate_name")

    assert +M.field == "alternate_name"
    assert ++M.field == "$alternate_name"


def test_unknown_attr_embedded_model():
    class E(EmbeddedModel): ...

    class M(Model):
        field: E

    with pytest.raises(AttributeError):
        M.field.unknown_attr  # type: ignore


@pytest.mark.parametrize("operator_name", ("lt", "lte", "gt", "gte", "match"))
def test_reference_field_operator_not_allowed(operator_name: str):
    class E(Model): ...

    class M(Model):
        field: E = Reference()

    with pytest.raises(
        AttributeError,
        match=f"operator {operator_name} not allowed for ODMReference fields",
    ):
        getattr(M.field, operator_name)


def test_field_required_in_doc_without_default():
    class M(Model):
        field: str

    assert M.__odm_fields__["field"].is_required_in_doc()


def test_field_required_in_doc_with_default():
    class M(Model):
        field: str = Field("hi")

    assert not M.__odm_fields__["field"].is_required_in_doc()


def test_field_required_in_doc_default_factory_disabled():
    class M(Model):
        field: str = Field(default_factory=lambda: "hi")  # pragma: no cover

    assert M.__odm_fields__["field"].is_required_in_doc()


def test_field_required_in_doc_default_factory_enabled():
    class M(Model):
        field: str = Field(default_factory=lambda: "hi")  # pragma: no cover

        model_config = {
            "parse_doc_with_default_factories": True,
        }

    assert not M.__odm_fields__["field"].is_required_in_doc()


def test_multiple_optional_fields():
    class M(Model):
        field: str = Field(default_factory=lambda: "hi")  # pragma: no cover
        optionalBoolField: Optional[bool] = None
        optionalDatetimeField: Optional[datetime] = None

    assert (
        M.__odm_fields__["optionalBoolField"].pydantic_field.annotation
        == Optional[bool]
    )
    assert (
        M.__odm_fields__["optionalDatetimeField"].pydantic_field.annotation
        == Optional[odmantic.bson._datetime]
    )

    instance = M(field="Hi")
    # This should work and never throw a value error
    instance.optionalBoolField = True