feat(F-102): completed feature

project/migrations/038_product_weight_min_purchase.js

@@ -0,0 +1,24 @@
+/**
+ * Product unit weight and minimum purchase quantity, plus per-method weight
+ * limits for shipping (max weight and free-shipping weight cap).
+ * @param {import('node-pg-migrate').MigrationBuilder} pgm
+ */
+export const up = (pgm) => {
+  pgm.sql(
+    `ALTER TABLE catalog_products ADD COLUMN IF NOT EXISTS unit_weight_kg numeric(8,3) NOT NULL DEFAULT 1`,
+  );
+  pgm.sql(
+    `ALTER TABLE catalog_products ADD COLUMN IF NOT EXISTS min_purchase_qty integer NOT NULL DEFAULT 1`,
+  );
+  pgm.sql(`ALTER TABLE shipping_methods ADD COLUMN IF NOT EXISTS max_weight_kg numeric(8,3) NULL`);
+  pgm.sql(
+    `ALTER TABLE shipping_methods ADD COLUMN IF NOT EXISTS free_shipping_max_weight_kg numeric(8,3) NULL`,
+  );
+};
+
+export const down = (pgm) => {
+  pgm.sql(`ALTER TABLE shipping_methods DROP COLUMN IF EXISTS free_shipping_max_weight_kg`);
+  pgm.sql(`ALTER TABLE shipping_methods DROP COLUMN IF EXISTS max_weight_kg`);
+  pgm.sql(`ALTER TABLE catalog_products DROP COLUMN IF EXISTS min_purchase_qty`);
+  pgm.sql(`ALTER TABLE catalog_products DROP COLUMN IF EXISTS unit_weight_kg`);
+};