from sqlalchemy import Integer, String, Boolean, ForeignKey
from sqlalchemy.orm import Mapped, mapped_column, relationship
from app.database import Base

class Lender(Base):
    __tablename__ = "lenders"
    
    id: Mapped[int] = mapped_column(Integer, primary_key=True, index=True)
    name: Mapped[str] = mapped_column(String(255), nullable=False)
    code: Mapped[str] = mapped_column(String(50), unique=True, index=True, nullable=False)
    is_active: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)
    
    products: Mapped[list["Product"]] = relationship(back_populates="lender", cascade="all, delete-orphan")

class Product(Base):
    __tablename__ = "products"
    
    id: Mapped[int] = mapped_column(Integer, primary_key=True, index=True)
    lender_id: Mapped[int] = mapped_column(Integer, ForeignKey("lenders.id"), nullable=False)
    name: Mapped[str] = mapped_column(String(255), nullable=False)
    code: Mapped[str] = mapped_column(String(100), index=True, nullable=False)
    is_active: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)
    
    lender: Mapped["Lender"] = relationship(back_populates="products")
    configurations: Mapped[list["ProductConfiguration"]] = relationship(back_populates="product", cascade="all, delete-orphan")