chore：智能客服聊天不乱窜了

pages_tool/ai-chat/ai-chat-message.vue

@@ -1,23 +1,13 @@
 <template>
   <view class="ai-chat-container">
-    <!-- 聊天消息列表 -->
-    <!-- #ifdef H5 -->
+    <!-- 聊天消息列表 - 统一使用 scroll-into-view -->
     <scroll-view 
       class="chat-messages" 
       scroll-y 
       :scroll-into-view="scrollIntoViewId"
-      :scroll-with-animation="true"
-      @scroll="onScroll">
-    <!-- #endif -->
-    
-    <!-- #ifdef MP-WEIXIN -->
-    <scroll-view 
-      class="chat-messages" 
-      scroll-y 
       :scroll-top="scrollTop"
       :scroll-with-animation="true"
       @scroll="onScroll">
-    <!-- #endif -->
       
       <!-- 加载更多历史消息 -->
       <view class="load-more" v-if="hasMoreHistory">
@@ -184,13 +174,7 @@
           </view>
         </view>
       </view>
-    <!-- #ifdef H5 -->
     </scroll-view>
-    <!-- #endif -->
-    
-    <!-- #ifdef MP-WEIXIN -->
-    </scroll-view>
-    <!-- #endif -->
     
     <!-- 输入区域 -->
     <view class="input-area">
@@ -497,8 +481,8 @@ export default {
   watch: {
       messages: {
         handler(newVal, oldVal) {
-          // 仅在新增消息时触发滚动，流式响应时由手动控制
-          if (!this.isLoadingHistory && !this.isStreaming && newVal.length !== oldVal.length) {
+          // 仅当不是加载历史且不是流式响应时，执行滚底
+          if (!this.isLoadingHistory && !this.isStreaming && newVal.length > oldVal.length) {
             this.$nextTick(() => {
               this.scrollToBottom()
             })
@@ -897,6 +881,9 @@ async loadChatHistoryIfExist() {
      isStreaming: true
    };
  
+   // 标记正在流式响应
+   this.isStreaming = true;
+   
    // 移除加载状态，添加流式消息
    this.messages = this.messages.filter(msg => msg.type !== 'loading');
    this.shouldScrollToBottom = true;
@@ -926,6 +913,7 @@ async loadChatHistoryIfExist() {
 
          // 标记流式结束
          streamMessage.isStreaming = false;
+         this.isStreaming = false;
 
          // 检查内容是否为空，如果为空则移除该消息
          if (!streamMessage.content || streamMessage.content.trim() === '') {
@@ -965,6 +953,7 @@ async loadChatHistoryIfExist() {
 
         // 标记流式结束
         streamMessage.isStreaming = false;
+        this.isStreaming = false;
 
         // 检查内容是否为空，如果为空则移除该消息
         if (!streamMessage.content || streamMessage.content.trim() === '') {
@@ -991,6 +980,8 @@ async loadChatHistoryIfExist() {
      // #endif
    } catch (error) {
      console.error('流式请求失败:', error);
+     // 标记流式结束
+     this.isStreaming = false;
      // 移除流式消息
      this.messages = this.messages.filter(msg => msg.id !== streamMessage.id);
      // 显示错误
@@ -1074,30 +1065,24 @@ async loadChatHistoryIfExist() {
       return mins.toString().padStart(2, '0') + ':' + secs.toString().padStart(2, '0')
     },
     
-    // 滚动到底部
+    // 滚动到底部 - 统一使用 scroll-into-view
     scrollToBottom() {
       if (this.scrollTimer) {
         clearTimeout(this.scrollTimer);
       }
       this.scrollTimer = setTimeout(() => {
-        // #ifdef H5
         if (this.messages.length > 0) {
           const filteredMessages = this.messages.filter(msg => msg.content && msg.content.trim() !== '');
           if (filteredMessages.length > 0) {
             const lastMessage = filteredMessages[filteredMessages.length - 1];
             const lastIndex = this.messages.indexOf(lastMessage);
-            this.scrollIntoViewId = `msg-${lastMessage.id || lastMessage.timestamp}-${lastIndex}`;
-            // 保持 scrollIntoViewId 不清除，避免频繁切换
+            // 先设为空，再设置新值，确保能触发滚动
+            this.scrollIntoViewId = null;
+            this.$nextTick(() => {
+              this.scrollIntoViewId = `msg-${lastMessage.id || lastMessage.timestamp}-${lastIndex}`;
+            });
           }
         }
-        // #endif
-        
-        // #ifdef MP-WEIXIN
-        // 直接设置大值滚动到底部，不要重置为0
-        this.$nextTick(() => {
-          this.scrollTop = 9999999;
-        });
-        // #endif
       }, 100);
     },