from sqlalchemy import Column, String, Boolean, DateTime, ForeignKey, Table
from sqlalchemy.sql import func
from app.core.database.db_session import Base

# Many-to-many helper table for Product <-> Collection
product_collections = Table(
    "product_collections",
    Base.metadata,
    Column("product_id", String(26), ForeignKey("products.product_id", ondelete="CASCADE"), primary_key=True),
    Column("collection_id", String(26), ForeignKey("collections.collection_id", ondelete="CASCADE"), primary_key=True)
)

class Collection(Base):
    __tablename__ = "collections"

    collection_id = Column(String(26), primary_key=True)
    name = Column(String(100), unique=True, nullable=False)
    slug = Column(String(100), unique=True, nullable=False)
    description = Column(String(500), nullable=True)
    is_active = Column(Boolean, default=True)
    created_at = Column(DateTime, server_default=func.now())