# This file was auto-generated by Fern from our API Definition.

import datetime as dt
import typing

from ..core.datetime_utils import serialize_datetime
from ..core.pydantic_utilities import deep_union_pydantic_dicts, pydantic_v1
from ..core.unchecked_base_model import UncheckedBaseModel


class ChatCitation(UncheckedBaseModel):
    """
    A section of the generated reply which cites external knowledge.
    """

    start: int = pydantic_v1.Field()
    """
    The index of text that the citation starts at, counting from zero. For example, a generation of `Hello, world!` with a citation on `world` would have a start value of `7`. This is because the citation starts at `w`, which is the seventh character.
    """

    end: int = pydantic_v1.Field()
    """
    The index of text that the citation ends after, counting from zero. For example, a generation of `Hello, world!` with a citation on `world` would have an end value of `11`. This is because the citation ends after `d`, which is the eleventh character.
    """

    text: str = pydantic_v1.Field()
    """
    The text of the citation. For example, a generation of `Hello, world!` with a citation of `world` would have a text value of `world`.
    """

    document_ids: typing.List[str] = pydantic_v1.Field()
    """
    Identifiers of documents cited by this section of the generated reply.
    """

    def json(self, **kwargs: typing.Any) -> str:
        kwargs_with_defaults: typing.Any = {"by_alias": True, "exclude_unset": True, **kwargs}
        return super().json(**kwargs_with_defaults)

    def dict(self, **kwargs: typing.Any) -> typing.Dict[str, typing.Any]:
        kwargs_with_defaults_exclude_unset: typing.Any = {"by_alias": True, "exclude_unset": True, **kwargs}
        kwargs_with_defaults_exclude_none: typing.Any = {"by_alias": True, "exclude_none": True, **kwargs}

        return deep_union_pydantic_dicts(
            super().dict(**kwargs_with_defaults_exclude_unset), super().dict(**kwargs_with_defaults_exclude_none)
        )

    class Config:
        frozen = True
        smart_union = True
        extra = pydantic_v1.Extra.allow
        json_encoders = {dt.datetime: serialize_datetime}