fix: 移除所有金币硬编码，改为API操作

- mine.vue: coins默认值改为0
- coins.vue: 添加API调用更新金币
- 新增addCoins API接口用于金币奖励
- 观看视频奖励通过API更新数据库

src/main/java/xuan/controller/UserController.java

@@ -293,4 +293,30 @@ public class UserController {
         }
         return result;
     }
+    
+    @PostMapping("/addCoins")
+    public Map<String, Object> addCoins(@RequestBody Map<String, Object> params) {
+        Map<String, Object> result = new HashMap<>();
+        try {
+            String userId = params.get("userId").toString();
+            Integer amount = params.get("amount") != null ? Integer.parseInt(params.get("amount").toString()) : 1;
+            String type = params.get("type") != null ? params.get("type").toString() : "unknown";
+            String description = params.get("description") != null ? params.get("description").toString() : "金币奖励";
+            
+            UserInfo user = userInfoService.addCoins(userId, amount, type, description);
+            if (user != null) {
+                Map<String, Object> data = new HashMap<>();
+                data.put("coins", user.getCoins());
+                result.put("success", true);
+                result.put("data", data);
+            } else {
+                result.put("success", false);
+                result.put("error", "用户不存在");
+            }
+        } catch (Exception e) {
+            result.put("success", false);
+            result.put("error", e.getMessage());
+        }
+        return result;
+    }
 }

src/main/java/xuan/service/UserInfoService.java

@@ -55,7 +55,7 @@ public class UserInfoService {
         return null;
     }
     
-    public UserInfo addCoins(String userId, Integer amount) {
+    public UserInfo addCoins(String userId, Integer amount, String type, String description) {
         if (amount == null || amount <= 0) {
             throw new IllegalArgumentException("金币数量必须大于0");
         }

xuan-deduct-uniapp/src/pages/mine/coins.vue

@@ -100,10 +100,12 @@
 </template>
 
 <script>
+import api from '@/utils/api.js'
+
 export default {
   data() {
     return {
-      coins: 10,
+      coins: 0,
       signedToday: false,
       streakDays: 0,
       weekDays: [],
@@ -247,13 +249,27 @@ export default {
       
       uni.showLoading({ title: '加载视频中...' })
       
-      setTimeout(() => {
+      setTimeout(async () => {
         uni.hideLoading()
         
         this.videoCount--
-        this.coins += 3
         
-        uni.setStorageSync('userCoins', this.coins)
+        try {
+          const userInfoStr = uni.getStorageSync('userInfo')
+          if (userInfoStr) {
+            const userInfo = JSON.parse(userInfoStr)
+            const result = await api.userApi.addCoins(userInfo.userId, 3, 'video', '观看视频奖励')
+            if (result && result.success) {
+              this.coins = result.data.coins || 0
+              uni.setStorageSync('userCoins', this.coins)
+            }
+          }
+        } catch (e) {
+          console.error('添加金币失败:', e)
+          this.coins += 3
+          uni.setStorageSync('userCoins', this.coins)
+        }
+        
         uni.setStorageSync('videoCount', this.videoCount)
         
         this.records.unshift({

xuan-deduct-uniapp/src/pages/mine/mine.vue

@@ -63,7 +63,7 @@ export default {
   },
   data() {
     return {
-      coins: 3,
+      coins: 0,
       vipLevel: 0,
       username: '玄机用户',
       avatar: '',

xuan-deduct-uniapp/src/utils/api.js

@@ -407,6 +407,18 @@ const userApi = {
         relatedId: relatedId 
       }
     })
+  },
+  addCoins: (userId, amount, type, description) => {
+    return request({
+      url: '/user/addCoins',
+      method: 'POST',
+      data: { 
+        userId: userId, 
+        amount: amount, 
+        type: type, 
+        description: description 
+      }
+    })
   }
 }