Erfasse Shopify-Bestellungen trotz Fehlbestand

db/README.md

@@ -10,6 +10,7 @@
 6. `db/migrations/0006_phase1_otc_products.sql`
 7. `db/migrations/0007_phase1_excel_webhook.sql`
 8. `db/migrations/0008_shopify_sync_technical.sql`
+9. `db/migrations/0013_virtual_shortage_lot_allocations.sql`
 
 ## Beispielausfuehrung
 

db/migrations/0013_virtual_shortage_lot_allocations.sql

@@ -0,0 +1,35 @@
+-- Keep order capture independent from physical stock availability.
+
+ALTER TABLE stock_lot
+  DROP CONSTRAINT IF EXISTS chk_stock_lot_status;
+
+ALTER TABLE stock_lot
+  ADD CONSTRAINT chk_stock_lot_status
+  CHECK (status IN ('open', 'current', 'closed', 'virtual_shortage'));
+
+ALTER TABLE stock_lot
+  DROP CONSTRAINT IF EXISTS chk_stock_lot_number_required_for_non_open;
+
+ALTER TABLE stock_lot
+  ADD CONSTRAINT chk_stock_lot_number_required_for_non_open
+  CHECK (status = 'open' OR lot_number IS NOT NULL);
+
+CREATE TABLE stock_lot_allocation_replacement (
+  id BIGSERIAL PRIMARY KEY,
+  from_allocation_id BIGINT NOT NULL REFERENCES sales_order_line_lot_allocation(id) ON DELETE RESTRICT,
+  to_allocation_id BIGINT NOT NULL REFERENCES sales_order_line_lot_allocation(id) ON DELETE RESTRICT,
+  from_lot_id BIGINT NOT NULL REFERENCES stock_lot(id) ON DELETE RESTRICT,
+  to_lot_id BIGINT NOT NULL REFERENCES stock_lot(id) ON DELETE RESTRICT,
+  product_id BIGINT NOT NULL REFERENCES product(id) ON DELETE RESTRICT,
+  qty NUMERIC(14, 4) NOT NULL,
+  changed_by TEXT NOT NULL,
+  reason TEXT NOT NULL,
+  created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+  CONSTRAINT chk_stock_lot_allocation_replacement_qty_positive CHECK (qty > 0),
+  CONSTRAINT chk_stock_lot_allocation_replacement_distinct_lots CHECK (from_lot_id <> to_lot_id)
+);
+
+CREATE INDEX idx_stock_lot_allocation_replacement_from
+  ON stock_lot_allocation_replacement(from_allocation_id);
+CREATE INDEX idx_stock_lot_allocation_replacement_to
+  ON stock_lot_allocation_replacement(to_allocation_id);