"""Shared API response schemas."""

from typing import Generic, TypeVar

from pydantic import BaseModel, ConfigDict, Field


def to_camel(value: str) -> str:
    head, *tail = value.split("_")
    return head + "".join(part.capitalize() for part in tail)


class ApiSchema(BaseModel):
    model_config = ConfigDict(alias_generator=to_camel, populate_by_name=True)


DataT = TypeVar("DataT")


class ApiResponse(ApiSchema, Generic[DataT]):
    code: int = 200
    message: str = "success"
    data: DataT | None = Field(default=None)


class HealthData(ApiSchema):
    status: str = "ok"
    service: str
    version: str