from datetime import datetime
from typing import Optional

from sqlmodel import Field, SQLModel


class User(SQLModel, table=True):
    id: Optional[int] = Field(default=None, primary_key=True)
    username: str = Field(index=True, unique=True)
    email: str = Field(index=True, unique=True)
    password_hash: str

    # Profile Info
    firstname: Optional[str] = None
    lastname: Optional[str] = None
    age: Optional[int] = None
    gender: Optional[str] = None
    height: Optional[float] = None
    weight: Optional[float] = None
    unit_preference: str = Field(default="metric")  # "metric" or "imperial"

    # Nutrition Targets
    target_calories: Optional[float] = None
    target_protein: Optional[float] = None
    target_carbs: Optional[float] = None
    target_fat: Optional[float] = None

    created_at: datetime = Field(default_factory=datetime.utcnow)