from sqlalchemy import ForeignKey, Integer, String, Numeric, DateTime
from sqlalchemy.orm import Mapped, mapped_column
from app.core.database import Base
from app.models.base import TimestampMixin

class Transaction(TimestampMixin, Base):
    __tablename__ = "transactions"
    id: Mapped[int] = mapped_column(Integer, primary_key=True)
    brand_id: Mapped[int] = mapped_column(ForeignKey("brands.id", ondelete="CASCADE"), index=True)
    customer_id: Mapped[int] = mapped_column(ForeignKey("customers.id"), index=True)
    invoice_id: Mapped[int | None] = mapped_column(ForeignKey("invoices.id"))
    product_id: Mapped[int | None] = mapped_column(ForeignKey("products.id"))
    sku_id: Mapped[int | None] = mapped_column(ForeignKey("skus.id"))
    amount: Mapped[float] = mapped_column(Numeric(14,2))
    points_earned: Mapped[int] = mapped_column(Integer, default=0)
    external_reference: Mapped[str | None] = mapped_column(String(120), unique=True, index=True)
    status: Mapped[str] = mapped_column(String(20), default="completed", index=True)