v0.1.31 - Mix Editor multi edit

backend/app/api/editor.py

@@ -423,6 +423,45 @@ def update_editor_mix(
     return _serialize_mix_row(mix, visible_count=visible_count, product_count=total)
 
 
+@router.delete("/mixes/{mix_id}", status_code=204)
+def delete_editor_mix(
+    mix_id: int,
+    session: AuthSession = Depends(_require_editor_session),
+    db: Session = Depends(get_db),
+):
+    """Delete a mix that no product depends on.
+
+    A product must reference a mix (`products.mix_id` is NOT NULL), so a mix that
+    still drives products can't be removed without orphaning them — those should
+    be marked inactive instead. The mix's own ingredient rows cascade away with
+    it via the `delete-orphan` relationship.
+    """
+    mix = db.scalar(select(Mix).where(Mix.id == mix_id, Mix.tenant_id == session.tenant_id))
+    if mix is None:
+        raise HTTPException(status_code=404, detail="Mix not found")
+
+    product_total = (
+        db.scalar(
+            select(func.count())
+            .select_from(Product)
+            .where(Product.tenant_id == session.tenant_id, Product.mix_id == mix_id)
+        )
+        or 0
+    )
+    if product_total > 0:
+        raise HTTPException(
+            status_code=409,
+            detail=(
+                f"This mix has {product_total} linked product"
+                f"{'s' if product_total != 1 else ''}. Mark it inactive or remove its products first."
+            ),
+        )
+
+    db.delete(mix)
+    db.commit()
+    return None
+
+
 @router.get("/mixes/{mix_id}/ingredients", response_model=EditorMixFormulaRead)
 def get_editor_mix_ingredients(
     mix_id: int,