new init

apps/backend/app/models/delivery.py

@@ -0,0 +1,22 @@
+from app.core.database import Base
+from sqlalchemy import Column, Integer, String, DateTime, ForeignKey, Text
+from sqlalchemy.orm import relationship
+from datetime import datetime
+
+class Delivery(Base):
+    __tablename__ = "deliveries"
+
+    id = Column(Integer, primary_key=True, index=True)
+    product_id = Column(Integer, ForeignKey("products.id", ondelete="CASCADE"), nullable=False, index=True)
+
+    amount = Column(Integer, nullable=False, default=0)            # gelieferte Menge (Stück / Einheiten)
+    price_cents = Column(Integer, nullable=False, default=0)       # Einkaufspreis in Cent (gesamt oder pro Einheit – je nach Modell)
+    delivered_at = Column(DateTime(timezone=True), nullable=True)  # Lieferdatum
+    supplier = Column(String, nullable=True)                       # Lieferant (frei)
+    invoice_number = Column(String, nullable=True)                 # Rechnungsnummer
+    created_by = Column(Integer, nullable=True)                    # optional: User-ID, der die Lieferung erfasst hat
+    deposit_return_cents = Column(Integer, nullable=False, server_default="0")
+    note = Column(Text, nullable=True)  # oder String(1000)
+    
+    # Rückverknüpfung zum Produkt
+    product = relationship("Product", back_populates="deliveries")