from __future__ import annotations

from datetime import datetime
from typing import Any

from pydantic import BaseModel, ConfigDict, field_serializer


def to_camel(value: str) -> str:
    head, *tail = value.split("_")
    return head + "".join(item[:1].upper() + item[1:] for item in tail)


class ItiModel(BaseModel):
    model_config = ConfigDict(
        alias_generator=to_camel,
        populate_by_name=True,
        from_attributes=True,
        use_enum_values=True,
    )

    @field_serializer("*", when_used="json")
    def serialize_datetime(self, value: Any) -> Any:
        if isinstance(value, datetime):
            return value.isoformat()
        return value