增加现场提货的配置

packages/domain/src/index.ts

@@ -33,36 +33,48 @@ export function saleUnitLabel(saleUnit: ProductSaleUnit | string | null | undefi
   return saleUnit === 'BOX' ? '箱' : '瓶';
 }
 
+export type DeliveryFulfillmentType = 'LOCAL' | 'CROSS_CITY' | 'ON_SITE_PICKUP';
+
+/** 城市履约起购（瓶当量） */
+export type MinPurchaseMins = {
+  pickupMinQty: number;
+  localMinQty: number;
+  crossMinQty: number;
+};
+
+export function minBottleQtyForDelivery(
+  deliveryType: DeliveryFulfillmentType,
+  mins: MinPurchaseMins,
+): number {
+  if (deliveryType === 'ON_SITE_PICKUP') {
+    return mins.pickupMinQty > 0 ? mins.pickupMinQty : 2;
+  }
+  if (deliveryType === 'LOCAL') {
+    return mins.localMinQty;
+  }
+  return mins.crossMinQty;
+}
+
 export function validateMinPurchase(
-  deliveryType: 'LOCAL' | 'CROSS_CITY' | 'ON_SITE_PICKUP',
+  deliveryType: DeliveryFulfillmentType,
   quantity: number,
-  localMinQty: number,
-  crossMinQty: number,
+  mins: MinPurchaseMins,
   options?: { bottlesPerUnit?: number; saleUnit?: ProductSaleUnit },
 ): { ok: boolean; message?: string } {
   const bottlesPerUnit = options?.bottlesPerUnit ?? 1;
   const saleUnit = options?.saleUnit ?? (bottlesPerUnit > 1 ? 'BOX' : 'BOTTLE');
   const bottleQty = toBottleQuantity(quantity, bottlesPerUnit);
   const unit = saleUnitLabel(saleUnit);
-
-  if (deliveryType === 'ON_SITE_PICKUP') {
-    const minBottles = localMinQty > 0 ? localMinQty : 2;
-    if (bottleQty < minBottles) {
-      const minSale = toMinSaleQuantity(minBottles, bottlesPerUnit);
-      return { ok: false, message: `现场提货至少购买 ${minSale}${unit}` };
-    }
-    return { ok: true };
-  }
-  const minBottles = deliveryType === 'LOCAL' ? localMinQty : crossMinQty;
+  const minBottles = minBottleQtyForDelivery(deliveryType, mins);
   if (bottleQty < minBottles) {
     const minSale = toMinSaleQuantity(minBottles, bottlesPerUnit);
-    return {
-      ok: false,
-      message:
-        deliveryType === 'LOCAL'
+    const message =
+      deliveryType === 'ON_SITE_PICKUP'
+        ? `现场提货至少购买 ${minSale}${unit}`
+        : deliveryType === 'LOCAL'
           ? `同城配送至少购买 ${minSale}${unit}`
-          : `跨城配送至少购买 ${minSale}${unit}`,
-    };
+          : `跨城配送至少购买 ${minSale}${unit}`;
+    return { ok: false, message };
   }
   return { ok: true };
 }