order button

trade-hub/backend/app/models.py

@@ -49,6 +49,9 @@ class User(Base):
     inventory: Mapped[list["InventoryEntry"]] = relationship(
         back_populates="user", cascade="all, delete-orphan"
     )
+    orders: Mapped[list["Order"]] = relationship(
+        back_populates="user", cascade="all, delete-orphan"
+    )
 
 
 class UserSession(Base):
@@ -109,3 +112,46 @@ class InventoryEntry(Base):
     )
 
     user: Mapped[User] = relationship(back_populates="inventory")
+
+
+class Order(Base):
+    """A public request for a catalog item placed by a logged-in user.
+
+    Orders are intentionally visible to everyone (see app/orders.py). They
+    reference catalog items by `class_name` only, exactly like inventory rows,
+    so a catalog refresh cannot break them.
+    """
+
+    __tablename__ = "orders"
+    __table_args__ = (
+        CheckConstraint("quantity >= 1", name="ck_orders_quantity_positive"),
+        CheckConstraint(
+            "quality IS NULL OR (quality >= 1 AND quality <= 1000)",
+            name="ck_orders_quality_range",
+        ),
+        CheckConstraint(
+            "status IN ('open', 'fulfilled')",
+            name="ck_orders_status",
+        ),
+    )
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    user_id: Mapped[int] = mapped_column(
+        ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True
+    )
+    class_name: Mapped[str] = mapped_column(String(255), nullable=False)
+    quantity: Mapped[int] = mapped_column(Integer, nullable=False, default=1)
+    # Mining/refining quality (1-1000); only valid for quality-applicable ores.
+    quality: Mapped[int | None] = mapped_column(Integer, nullable=True)
+    notes: Mapped[str] = mapped_column(Text, nullable=False, default="")
+    status: Mapped[str] = mapped_column(
+        String(16), nullable=False, default="open", server_default="open"
+    )
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), nullable=False, default=utcnow
+    )
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), nullable=False, default=utcnow, onupdate=utcnow
+    )
+
+    user: Mapped[User] = relationship(back_populates="orders")