from sqlalchemy import Boolean, Column, DateTime, Float, ForeignKey, Integer, String, Text
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func

from app.db.session import Base


class Category(Base):
    __tablename__ = "categories"

    id = Column(Integer, primary_key=True, index=True)
    name = Column(String, unique=True, index=True, nullable=False)
    description = Column(Text)

    # Relationships
    products = relationship("Product", back_populates="category")
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), onupdate=func.now())


class Product(Base):
    __tablename__ = "products"

    id = Column(Integer, primary_key=True, index=True)
    name = Column(String, index=True, nullable=False)
    description = Column(Text)
    price = Column(Float, nullable=False)
    stock = Column(Integer, default=0)
    image_url = Column(String)
    is_active = Column(Boolean, default=True)
    category_id = Column(Integer, ForeignKey("categories.id"))

    # Relationships
    category = relationship("Category", back_populates="products")
    reviews = relationship("Review", back_populates="product", cascade="all, delete-orphan")
    order_items = relationship("OrderItem", back_populates="product")
    cart_items = relationship("CartItem", back_populates="product")
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), onupdate=func.now())