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


class Shop(Base):
    __tablename__ = "shops"

    id = Column(Integer, primary_key=True, index=True)
    shop_code = Column(
        String, unique=True, index=True, nullable=False
    )  # e.g., "TECHSTORE", "FASHIONHUB"
    shop_name = Column(String, nullable=False)  # Display name
    description = Column(Text)
    owner_id = Column(Integer, ForeignKey("users.id"), nullable=False)

    # Contact information
    contact_email = Column(String)
    contact_phone = Column(String)
    website = Column(String)

    # Business information
    business_address = Column(Text)
    tax_number = Column(String)

    # Status
    is_active = Column(Boolean, default=True)
    is_verified = Column(Boolean, default=False)

    # Timestamps
    created_at = Column(DateTime, default=datetime.utcnow)
    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)

    # Relationships
    owner = relationship("User", back_populates="owned_shops")
    shop_products = relationship("ShopProduct", back_populates="shop")
    marketplace_import_jobs = relationship(
        "MarketplaceImportJob", back_populates="shop"
    )


class ShopProduct(Base):
    __tablename__ = "shop_products"

    id = Column(Integer, primary_key=True, index=True)
    shop_id = Column(Integer, ForeignKey("shops.id"), nullable=False)
    product_id = Column(Integer, ForeignKey("products.id"), nullable=False)

    # Shop-specific overrides (can override the main product data)
    shop_product_id = Column(String)  # Shop's internal product ID
    shop_price = Column(Float)  # Override main product price
    shop_sale_price = Column(Float)
    shop_currency = Column(String)
    shop_availability = Column(String)  # Override availability
    shop_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)

    # Timestamps
    created_at = Column(DateTime, default=datetime.utcnow)
    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)

    # Relationships
    shop = relationship("Shop", back_populates="shop_products")
    product = relationship("Product", back_populates="shop_products")

    # Constraints
    __table_args__ = (
        UniqueConstraint("shop_id", "product_id", name="uq_shop_product"),
        Index("idx_shop_product_active", "shop_id", "is_active"),
        Index("idx_shop_product_featured", "shop_id", "is_featured"),
    )