feat(catalog): add product fulfillment flags and auto SKU

Enable online/cross-city/on-site purchase switches with trade gates, HQ and proxy UI, and server-generated DK SKUs.

Co-authored-by: Cursor <cursoragent@cursor.com>

server/dukang-api/src/modules/trade/trade.service.ts

@@ -86,6 +86,22 @@ export class TradeService {
       }
     }
 
+    if (!onSitePickup) {
+      const allowOnline = product.allowOnlinePurchase !== false;
+      const allowCross = product.allowCrossCityDelivery !== false;
+      if (deliveryType === 'LOCAL' && !allowOnline) {
+        throw new BadRequestException('该商品不支持线上购买');
+      }
+      if (deliveryType === 'CROSS_CITY') {
+        if (!allowOnline) {
+          throw new BadRequestException('该商品不支持线上购买');
+        }
+        if (!allowCross) {
+          throw new BadRequestException('该商品不支持跨城配送');
+        }
+      }
+    }
+
     const check = validateMinPurchase(
       deliveryType,
       body.quantity,
@@ -1121,6 +1137,9 @@ export class TradeService {
         benefitAmount: p.benefitAmount != null ? Number(p.benefitAmount) : null,
         coverUrl: (p as { mainImageUrl?: string | null }).mainImageUrl ?? null,
         allowOnSitePickup: !!(p as { allowOnSitePickup?: boolean }).allowOnSitePickup,
+        allowOnlinePurchase: (p as { allowOnlinePurchase?: boolean }).allowOnlinePurchase !== false,
+        allowCrossCityDelivery:
+          (p as { allowCrossCityDelivery?: boolean }).allowCrossCityDelivery !== false,
       })),
       promoCodes,
       stores: stores.map((s) => ({
@@ -1166,6 +1185,19 @@ export class TradeService {
       if (receiverCity && receiverCity !== city.name && receiverCity !== '郑州市') {
         deliveryType = 'CROSS_CITY';
       }
+      const allowOnline = product.allowOnlinePurchase !== false;
+      const allowCross = product.allowCrossCityDelivery !== false;
+      if (deliveryType === 'LOCAL' && !allowOnline) {
+        throw new BadRequestException('该商品不支持线上购买');
+      }
+      if (deliveryType === 'CROSS_CITY') {
+        if (!allowOnline) {
+          throw new BadRequestException('该商品不支持线上购买');
+        }
+        if (!allowCross) {
+          throw new BadRequestException('该商品不支持跨城配送');
+        }
+      }
     }
 
     const check = validateMinPurchase(
@@ -1486,6 +1518,9 @@ export class TradeService {
         benefitAmount: p.benefitAmount != null ? Number(p.benefitAmount) : null,
         coverUrl: (p as { mainImageUrl?: string | null }).mainImageUrl ?? null,
         allowOnSitePickup: !!(p as { allowOnSitePickup?: boolean }).allowOnSitePickup,
+        allowOnlinePurchase: (p as { allowOnlinePurchase?: boolean }).allowOnlinePurchase !== false,
+        allowCrossCityDelivery:
+          (p as { allowCrossCityDelivery?: boolean }).allowCrossCityDelivery !== false,
       })),
       promoCodes,
       stores: [],