增加抢单接口

src/main/java/com/rj/service/impl/LbGoodsServiceImpl.java

@@ -7,6 +7,7 @@ import com.rj.dto.hxr.HxrLbGoodsPageData;
 import com.rj.dto.hxr.HxrLbGoodsSelectResponse;
 import com.rj.entity.LbGoods;
 import com.rj.mapper.LbGoodsMapper;
+import com.rj.service.HxrAdminBuyService;
 import com.rj.service.HxrAdminGoodsService;
 import com.rj.service.ILbGoodsService;
 import com.rj.tenant.TenantContextHolder;
@@ -35,6 +36,8 @@ public class LbGoodsServiceImpl extends ServiceImpl<LbGoodsMapper, LbGoods> impl
 
     private final HxrAdminGoodsService hxrAdminGoodsService;
 
+    private final HxrAdminBuyService hxrAdminBuyService;
+
     @Override
     public Map<String, Object> add(LbGoods entity) {
         Map<String, Object> result = new HashMap<>();
@@ -371,6 +374,111 @@ public class LbGoodsServiceImpl extends ServiceImpl<LbGoodsMapper, LbGoods> impl
         }
     }
 
+    @Override
+    public Map<String, Object> rushBuy(String token, Integer maxBuyCount, List<Long> idList) {
+        Map<String, Object> result = new HashMap<>();
+        try {
+            if (token == null || token.isBlank()) {
+                result.put("success", false);
+                result.put("message", "token不能为空");
+                return result;
+            }
+            if (maxBuyCount == null || maxBuyCount <= 0) {
+                result.put("success", false);
+                result.put("message", "maxBuyCount必须大于0");
+                return result;
+            }
+            if (idList == null || idList.isEmpty()) {
+                result.put("success", false);
+                result.put("message", "idList不能为空");
+                return result;
+            }
+
+            List<Long> distinctIds = idList.stream()
+                    .filter(id -> id != null)
+                    .distinct()
+                    .toList();
+            if (distinctIds.isEmpty()) {
+                result.put("success", false);
+                result.put("message", "idList无有效id");
+                return result;
+            }
+
+            List<LbGoods> found = this.listByIds(distinctIds);
+            Map<Long, LbGoods> goodsById = new LinkedHashMap<>();
+            for (LbGoods goods : found) {
+                if (goods.getId() != null) {
+                    goodsById.put(goods.getId(), goods);
+                }
+            }
+
+            List<Map<String, Object>> details = new ArrayList<>();
+            int successCount = 0;
+            int failCount = 0;
+            boolean stoppedByMax = false;
+
+            for (Long goodsId : idList) {
+                if (goodsId == null) {
+                    continue;
+                }
+                if (successCount >= maxBuyCount) {
+                    stoppedByMax = true;
+                    break;
+                }
+
+                Map<String, Object> item = new LinkedHashMap<>();
+                item.put("id", goodsId);
+
+                LbGoods goods = goodsById.get(goodsId);
+                if (goods == null) {
+                    item.put("success", false);
+                    item.put("message", "lb_goods中未找到该货品");
+                    details.add(item);
+                    failCount++;
+                    continue;
+                }
+                if (goods.getSellerId() == null) {
+                    item.put("success", false);
+                    item.put("message", "seller_id为空，无法抢购");
+                    details.add(item);
+                    failCount++;
+                    continue;
+                }
+
+                item.put("sellerId", goods.getSellerId());
+                item.put("title", goods.getTitle());
+
+                HxrAdminBuyService.BuyApiResult buyResult =
+                        hxrAdminBuyService.buy(goodsId, goods.getSellerId(), token);
+                item.put("apiCode", buyResult.apiCode());
+                item.put("message", buyResult.apiMsg());
+                item.put("success", buyResult.success());
+                details.add(item);
+
+                if (buyResult.success()) {
+                    successCount++;
+                } else {
+                    failCount++;
+                }
+            }
+
+            result.put("success", successCount > 0);
+            result.put("message", successCount > 0
+                    ? "抢购完成，成功 " + successCount + " 笔，失败 " + failCount + " 笔"
+                    : "抢购未成功");
+            result.put("successCount", successCount);
+            result.put("failCount", failCount);
+            result.put("stoppedByMax", stoppedByMax);
+            result.put("details", details);
+            return result;
+        } catch (Exception e) {
+            log.error("rushBuy failed", e);
+            result.put("success", false);
+            result.put("message", "抢购异常：" + e.getMessage());
+            return result;
+        }
+    }
+
     private static void applyDefaults(LbGoods entity) {
         if (entity.getPrice() == null) {
             entity.setPrice(BigDecimal.ZERO);