update activity

src/main/java/com/example/afrishop_v3/controllers/ActivityController.java

@@ -195,7 +195,7 @@ public class ActivityController {
                     double value = con.getValue();
                     discount = String.valueOf(value);
                     if (itemCount < key) {
-                        map.put("message", "Buy " + (key-itemCount) + " more item to Enjoy " + discount + "% off !");
+                        map.put("message", "Buy " + (key - itemCount) + " more item to Enjoy " + discount + "% off !");
                         break;
                     } else {
                         map.put("message", "Congrats, you've got " + discount + "% off !");
@@ -255,4 +255,91 @@ public class ActivityController {
         return activity;
     }
 
+    @PostMapping("/caculateCartDiscount")
+    public Result caculateCartDiscount1(@RequestBody String[] cartIds) {
+
+        BigDecimal itemPrice = BigDecimal.ZERO;
+
+        Map<String, Object> map = new HashMap<>();
+
+        List<Activity> fullList = activityRepository.findAllByUseType(1);
+
+        if (fullList.size() == 0 || fullList == null)
+            return new Result(ResultCodeEnum.SERVICE_ERROR.getCode(), "There is no online activity");
+
+        Activity activity = fullList.get(0);
+        String type = activity.getType().toString();
+        List<Condition> conList = JSONObject.parseArray(activity.getCondition(), Condition.class);
+        Collections.sort(conList, Comparator.comparing(Condition::getKey));
+
+        StringBuffer msg = new StringBuffer();
+        map.put("activity", activity);
+
+        if (cartIds == null) {
+            msg.append(activity.getContent());
+        }
+
+        int itemCount = 0;
+        for (String cartId : cartIds) {
+            Optional<TbCfCartRecordR> byId = cartRecordRRepository.findById(cartId);
+            if (byId.isPresent()) {
+                TbCfCartRecordR cart = byId.get();
+                itemCount += cart.getItemNum();
+                itemPrice = itemPrice.add(cart.getItemPrice()
+                        .multiply(new BigDecimal(cart.getItemNum())));
+            }
+        }
+
+        BigDecimal lessAmount;
+        String discount;
+        for (Condition con : conList) {
+            if ("1".equals(type) || "2".equals(type)) {
+                double key = con.getKey();
+                BigDecimal threshold = new BigDecimal(key);
+                double value = con.getValue();
+                discount = String.valueOf(value);
+                if ("1".equals(type)) {
+                    discount = "$" + discount;
+                } else {
+                    discount = discount + "%";
+                }
+                while (itemPrice.compareTo(threshold) >= 0) {
+                    msg.append("Congrats, you've got " + discount + " off ");
+                }
+
+                if (itemPrice.compareTo(threshold) < 0) {
+                    lessAmount = threshold.subtract(itemPrice);
+                    msg.append("Spend " + lessAmount + " more to Enjoy " + discount + " off !");
+                    break;
+                } /*else {
+                    msg.delete(0, msg.length());
+                    msg.append("Congrats, you've got " + discount + " off !");
+                }*/
+            } else if ("3".equals(type)) {
+                int key = (int) con.getKey();
+                double value = con.getValue();
+
+                /**
+                 * 2
+                 * 2==9
+                 * 3==8
+                 */
+
+                if (itemCount >= key) {
+                    msg.append("Congrats, you've got " + value + "% off !");
+                } else {
+                    msg.append("Buy " + (key - itemCount) + " more item to Enjoy " + value + "% off !");
+
+                }
+            }
+        }
+
+        map.put("message", msg);
+
+        return new Result(map);
+    }
+
+
 }
+
+