新增对话上下文,限制上下文最多5000字

pages/index/index.vue

@@ -49,7 +49,7 @@
       return {
         talkList: [],
         ajax: {
-          rows: 100, //每页数量
+          rows: 15, //每页数量
           page: 1, //页码
           flag: false, // 请求开关
           loading: false, // 加载中
@@ -76,8 +76,8 @@
       uni.onKeyboardHeightChange(e => {
         let h = this.keyboardHeight;
         this.keyboardHeight = e.height;
-        this.$nextTick(()=>{
-          setTimeout(()=>{
+        this.$nextTick(() => {
+          setTimeout(() => {
             uni.pageScrollTo({
               scrollTop: 9999999, // 当前位置向下滚动
               duration: 300 // 滚动过渡时间为300ms，默认值为300ms
@@ -106,7 +106,7 @@
           if (cl < nc.length) {
             this.c_content += nc[cl];
             cl++;
-            if (cl % 6 == 0) this.$nextTick(()=>{
+            if (cl % 6 == 0) this.$nextTick(() => {
               uni.pageScrollTo({
                 scrollTop: 999999,
               })
@@ -136,7 +136,7 @@
       },
       // 获取历史消息
       getHistoryMsg() {
-        return ;
+        return;
         if (this.ajax.flag) {
           return; //
         }
@@ -222,7 +222,7 @@
           }, 1500);
         })
       },
-      focus(){
+      focus() {
         // this.$nextTick(()=>{
         //   setTimeout(()=>{
         //     uni.pageScrollTo({
@@ -263,13 +263,13 @@
           })
           return;
         }
-        try{
+        try {
           clearInterval(this.timer);
-          this.talkList[this.talkList.length-1].content = this.c_content+'';
+          this.talkList[this.talkList.length - 1].content = this.c_content + '';
           this.c_content = '';
           this.n_content = '';
           this.socketTask.close({
-            success:(res)=> {
+            success: (res) => {
               console.log('关闭成功', res);
               this.wsLiveFlag = false;
             },
@@ -277,7 +277,7 @@
               console.log('关闭失败', err)
             }
           })
-        }catch(e){
+        } catch (e) {
           //TODO handle the exception
         }
         // 将当前发送信息 添加到消息列表。
@@ -350,7 +350,9 @@
           //     }
           //   }
           // };
-          let params = this.TEXT
+          if (this.historyTextList.length > 8) this.historyTextList = this.historyTextList.splice(-8);
+          this.isSurpass();
+          let params = this.historyTextList;
           realThis.socketTask.send({ // 发送消息，，都用uni的官方版本
             data: JSON.stringify(params),
             success() {
@@ -404,6 +406,19 @@
           }
         })
       },
+      // 判断文字是否超过五千字
+      isSurpass(){
+        let sum = this.historyTextList.reduce((accumulator, currentValue) => {
+          return accumulator + currentValue.content;
+        }, '');
+        if(sum.length>5000){
+          this.historyTextList.shift();
+          return this.isSurpass();
+        }else {
+          console.log(`本次发送${sum.length}字`);
+          return sum;
+        }
+      },
       // 鉴权
       getWebSocketUrl() {
         return new Promise((resolve, reject) => {
@@ -429,17 +444,17 @@
       },
       // 滚动到头部
       bindScroll() {
-      	if (this.userId == 0) {
-      		this.getHistory();
-      		this.getproductInfo();
-      		this.getOrderInfo();
-      		this.getRefundDetail();
-      		this.getStoreDetail();
-      	} else {
-      		this.getMerHistory();
-      	}
+        if (this.userId == 0) {
+          this.getHistory();
+          this.getproductInfo();
+          this.getOrderInfo();
+          this.getRefundDetail();
+          this.getStoreDetail();
+        } else {
+          this.getMerHistory();
+        }
       },
-      touchmove(e){
+      touchmove(e) {
         uni.hideKeyboard()
       }
     }
@@ -455,9 +470,17 @@
   }
 
   @keyframes blink {
-    0% { opacity: 1; }
-    50% { opacity: 0; }
-    100% { opacity: 1; }
+    0% {
+      opacity: 1;
+    }
+
+    50% {
+      opacity: 0;
+    }
+
+    100% {
+      opacity: 1;
+    }
   }
 
   .blinking-box {
@@ -521,8 +544,10 @@
     border-top: #e5e5e5 solid 1px;
     box-sizing: content-box;
     background-color: #f5f5f5;
-    transform: translateY(0); /* 初始化 transform 属性 */
-    transition: transform 0.3s ease; /* 添加过渡效果 */
+    transform: translateY(0);
+    /* 初始化 transform 属性 */
+    transition: transform 0.3s ease;
+    /* 添加过渡效果 */
 
     /* 兼容iPhoneX */
     padding-bottom: 0;
@@ -640,6 +665,7 @@
     margin: 0 !important;
     padding: 0 !important;
   }
+
   .placeholder {
     width: 100vw;
     background-color: #1573fb;