from datetime import datetime

from sqlalchemy import (Boolean, Column, DateTime, Float, ForeignKey, Index,
                        Integer, String, Text, UniqueConstraint)
from sqlalchemy.orm import relationship

# Import Base from the central database module instead of creating a new one
from app.core.database import Base
from models.database.base import TimestampMixin

class Product(Base, TimestampMixin):
    __tablename__ = "products"

    id = Column(Integer, primary_key=True, index=True)
    vendor_id = Column(Integer, ForeignKey("vendors.id"), nullable=False)
    marketplace_product_id = Column(Integer, ForeignKey("marketplace_products.id"), nullable=False)

    # Shop-specific overrides (can override the main product data)
    product_id = Column(String)  # Shop's internal product ID
    price = Column(Float)  # Override main product price
    sale_price = Column(Float)
    currency = Column(String)
    availability = Column(String)  # Override availability
    condition = Column(String)

    # Shop-specific metadata
    is_featured = Column(Boolean, default=False)
    is_active = Column(Boolean, default=True)
    display_order = Column(Integer, default=0)

    # Inventory management
    min_quantity = Column(Integer, default=1)
    max_quantity = Column(Integer)

    # Relationships
    vendor = relationship("Vendor", back_populates="product")
    marketplace_product = relationship("MarketplaceProduct", back_populates="product")

    # Constraints
    __table_args__ = (
        UniqueConstraint("vendor_id", "marketplace_product_id", name="uq_product"),
        Index("idx_product_active", "vendor_id", "is_active"),
        Index("idx_product_featured", "vendor_id", "is_featured"),
    )