# 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
from .tool_call import ToolCall


class ChatMessage(UncheckedBaseModel):
    """
    Represents a single message in the chat history, excluding the current user turn. It has two properties: `role` and `message`. The `role` identifies the sender (`CHATBOT`, `SYSTEM`, or `USER`), while the `message` contains the text content.

    The chat_history parameter should not be used for `SYSTEM` messages in most cases. Instead, to add a `SYSTEM` role message at the beginning of a conversation, the `preamble` parameter should be used.
    """

    message: str = pydantic_v1.Field()
    """
    Contents of the chat message.
    """

    tool_calls: typing.Optional[typing.List[ToolCall]] = None

    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}