from uuid import uuid4

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

from app.core.database import Base


class Category(Base):
    __tablename__ = "categories"

    id = Column(String(36), primary_key=True, default=lambda: str(uuid4()))
    name = Column(String(100), nullable=False, index=True)
    slug = Column(String(120), nullable=False, unique=True)
    description = Column(Text, nullable=True)
    image = Column(String(255), nullable=True)
    parent_id = Column(String(36), ForeignKey("categories.id"), nullable=True)
    is_active = Column(Boolean, default=True)
    display_order = Column(Integer, default=0)
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), onupdate=func.now())

    # Relationships
    parent = relationship("Category", remote_side=[id], backref="subcategories")
    products = relationship("Product", back_populates="category")

    def __repr__(self):
        return f"<Category {self.name}>"