"""Child-related request and response models."""

from datetime import datetime
from pydantic import BaseModel, Field


class CreateChildRequest(BaseModel):
    """Request model for creating a child."""

    name: str = Field(..., min_length=1, max_length=100)
    birth_time: datetime
    birth_weight: float = Field(..., gt=0, description="Birth weight in grams")


class ChildResponse(BaseModel):
    """Response model for child data."""

    id: int
    name: str
    birth_time: datetime
    birth_weight: float
    created_at: datetime
    parent_count: int | None = None
    parent_usernames: list[str] | None = None