import uuid
from datetime import datetime
from sqlalchemy import Column, String, DateTime, Integer, Enum, ForeignKey
from app.database import Base
import enum


class MovementType(str, enum.Enum):
    IN = "IN"
    OUT = "OUT"
    ADJUST = "ADJUST"


class StockMovement(Base):
    __tablename__ = "stock_movements"

    id = Column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()))
    product_id = Column(String(36), ForeignKey("products.id"), nullable=False)
    type = Column(Enum(MovementType), nullable=False)
    quantity = Column(Integer, nullable=False)
    reason = Column(String(200), nullable=True)
    created_at = Column(DateTime, default=datetime.utcnow)