import uuid
from datetime import datetime
from sqlalchemy import Column, String, DateTime, Integer, Numeric, ForeignKey
from sqlalchemy.orm import relationship
from app.database import Base


class Product(Base):
    __tablename__ = "products"

    id = Column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()))
    sku = Column(String(50), unique=True, nullable=False)
    name = Column(String(200), nullable=False)
    description = Column(String(1000), nullable=True)
    category_id = Column(String(36), ForeignKey("categories.id"), nullable=True)
    price = Column(Numeric(10, 2), nullable=False)
    min_stock = Column(Integer, default=0)
    current_stock = Column(Integer, default=0)
    created_at = Column(DateTime, default=datetime.utcnow)
    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)