uni-app 154朋友圈评论功能（一 )

<template>
  <view>
    <free-transparent-bar :scrollTop="scrollTop" @clickRight="clickRight"></free-transparent-bar>
    <view class="position-relative" style="height: 620rpx;">
      <image src="https://douyinzcmcss.oss-cn-shenzhen.aliyuncs.com/shengchengqi/datapic/1.jpg" mode="aspectFill" style="height: 590rpx;" class="bg-secondary w-100"></image>
      <image :src="user.avatar || '/static/images/demo/demo6.jpg'" style="width: 120rpx;height:120rpx;right: 30rpx;" mode="" class="bg-secondary rounded position-absolute bottom-0"></image>
      <text class="text-white font-md position-absolute" style="bottom: 45rpx;right: 160rpx">{{user.nickname || user.username}}</text>
    </view>
    
    <!-- 朋友圈列表样式 -->
    <free-moment-list v-for="(item,index) in list" :key='index' :item="item" :index="index" @action="doAction" @reply="replyEvent"></free-moment-list>
    
    <!-- 评论框 -->
    <free-popup ref="action" bottom transformOrigin="center bottom">
      <view style="height: 105rpx;" class="bg-light border-top flex align-center">
        <textarea fixed class="bg-white rounded p-2 font-md" style="height: 45rpx;width: 420rpx;" value="" placeholder=""  v-model="content" :focus="true"/>
        <free-icon-button @click="changeFaceModeal"><text class="iconfont font-lg">&#xe605;</text></free-icon-button>
        <free-main-button name="发送" :disabled="content.length===0" @click="send"></free-main-button>
      </view>
      
      <!-- 表情包 -->
      <scroll-view v-if="faceModal" scroll-y="true" style="height: 350rpx;" class="bg-light">
        <view class="flex flex-wrap">
          <view class="flex align-center justify-center" hover-class="bg-white" style="width:107rpx;height:107rpx;" v-for="(item,index) in faceList" :key="index" @click="addFace(item)">
            <text>{{item}}</text>
          </view>
        </view>
      </scroll-view>
    </free-popup>
    
    <!-- 上拉加载 -->
    <view class="flex align-center justify-center py-5 bg-light" v-if="list.length >= 10">
      <text class="text-muted font">{{loadmore}}</text>
    </view>
  </view>
</template>
<script>
  import freeTransparentBar from '@/components/free-ui/free-transparent-bar.vue';
  import freeMomentList from '@/components/free-ui/free-moment-list.vue';
  import freePopup from '@/components/free-ui/free-popup.vue';
  import freeIconButton from '@/components/free-ui/free-icon-button.vue';
  import freeMainButton from '@/components/free-ui/free-main-button.vue';
  import $H from '@/common/free-lib/request.js';
  import { mapState } from 'vuex';
  export default {
    components:{
      freeTransparentBar,
      freeMomentList,
      freePopup,
      freeIconButton,
      freeMainButton
    },
    data() {
      return {
        content:'',
        scrollTop:0,
        faceModal:false,
        faceList:["😀","😁","😂","😃","😄","😅","😆","😉","😊","😋","😎","😍","😘","😗","😙","😚","😇","😐","😑","😶","😏","😣","😥","😮","😯","😪","😫","😴","😌","😛","😜","😝","😒","😓","😔","😕","😲","😷","😖","😞","😟","😤","😢","😭","😦","😧","😨","😬","😰","😱","😳","😵","😡","😠"],
        commentIndex:-1,
        page:1,
        loadmore:'上拉加载更多',
        key:'moment_timeline',
        list:[],
        reply_user:false
      }
    },
    onPageScroll(e) {
      this.scrollTop = e.scrollTop;
    },
    onReachBottom() {
      if(this.loadmore !== '上拉加载更多'){
        return;
      }
      this.page += 1;
      this.loadmore = '加载中...';
      this.getData().catch(err=>{
        this.page -= 1;
        uni.showToast({
          title:'加载失败',
          icon:'none'
        });
        this.loadmore = '上拉加载更多';
      })
    },
    onLoad(e) {
      if(e.key){
        this.key  = e.key;
      }
      this.page = 1;
      this.getData();
    },
    onPullDownRefresh() {
      this.page = 1;
      this.getData().then(res=>{
        uni.showToast({
          title:'刷新成功',
          icon:'none'
        });
        uni.stopPullDownRefresh();
      }).catch(err=>{
        uni.showToast({
          title:'刷新失败',
          icon:'none'
        });
        uni.stopPullDownRefresh();
      });
    },
    computed:{
      ...mapState({
        user:state=>state.user.user
      })
    },
    methods: {
      // 点击操作菜单
      doAction(e){
        uni.showActionSheet({
          itemList: ['点赞','评论'],
          success: res => {
            if(res.tapIndex === 0){
              // 点赞
              this.doSupport(e)
            }else{
              this.content='';
              this.faceModal=false;
              this.commentIndex = e.index;
              this.reply_user = false;
              this.$refs.action.show();
              // this.doComment(e)
            }
          }
        });
      },
      // 获取数据
      getData(){
        return new Promise((result,reject)=>{
          let page = this.page;
          $H.get('/'+this.key+'/'+page).then(res=>{
            this.list = page === 1 ? res : [...this.list,...res];
            this.loadmore = this.list.length === (page * 10) ? '上拉加载更多' : '没有更多了'
            result(res);
          }).catch(err=>{
            reject(err);
          })
        })
      },
      // 点赞
      doSupport(e){
        $H.post('/moment/like',{id:e.item.moment_id}).then(res=>{
         let i = e.item.likes.findIndex(item=>item.id === this.user.id);
         if(i !== -1){
           // 取消点赞
           e.item.likes.splice(i,1);
         }else{
           // 点赞
           e.item.likes.push({
             id:this.user.id,
             name:this.user.nickname || this.user.username
           })
         }
         uni.showToast({
          title:i !== -1 ? '取消点赞成功' : '点赞成功',
        icon:'none'
         });
         
        })
      },
      // 添加表情
      addFace(item){
        this.content += item;
      },
      // 开启关闭表情包面板
      changeFaceModeal(){
        uni.hideKeyboard();
        setTimeout(()=>{
          this.faceModal = !this.faceModal;
        },100);
      },
      // 发送
      send(){
        let item = this.list[this.commentIndex];
        $H.post('/moment/comment',{
          id:item.moment_id,
          content:this.content,
          reply_id:this.reply_user ? this.reply_user.id : 0
        }).then(res=>{
          item.comments.push({
            content:this.content,
            user:{
              id:this.user.id,
              name:this.user.nickname || this.user.username
            },
            replay:this.reply_user ? this.reply : null
          })
          uni.showToast({
            title:'评论成功',
            icon:'none'
          })
        })
        this.$refs.action.hide();
      },
      replyEvent(e){
        this.content = '';
        this.faceModal = false,
        this.commentIndex = e.index,
        this.reply_user = e.replay;
        this.$refs.action.show();
      },
      // 选择发表朋友圈类型
      clickRight(){
        let list = [{
          name:'图文',
          key:'image'
        },
        {
          name:'视频',
          key:'video'
        },
        {
          name:'文字',
          key:'text'
        }];
        uni.showActionSheet({
          itemList:list.map(v=>v.name),
          success:res=>{
            uni.navigateTo({
              url: '../add-moment/add-moment?type='+list[res.tapIndex].key,
            });
          }
        })
      }
    },
  }
</script>
<style>
</style>

<template>
  <view class="p-3 flex align-start border-bottom border-light-secondary">
    <free-avatar :src='item.avatar' size="80"></free-avatar>
    <view class="pl-2 flex-1 flex flex-column">
      <!-- 昵称 -->
      <text class="font-md text-hover-primary">{{item.user_name}}</text>
      <!-- 内容 -->
      <text v-if="item.content" class="font-md text-dark mb-1">{{item.content}}</text>
      <!-- 图片 -->
      <view v-if="item.image.length" class="py-2 flex flex-wrap">
        <block v-for="(image,imageIndex) in item.image" :key='imageIndex'>
          <!-- 单图 -->
          <free-image v-if="item.image.length==1" :src="item.image[imageIndex]" imageClass='rounded' @click="preview(image)"></free-image>
          <free-image v-else :src="item.image[imageIndex]" imageClass='rounded' mode="aspectFill" style="width: 180rpx;height: 180rpx;" class="bg-secondary mr-2 mb-2" @click="preview(image)"></free-image>
        </block>
      </view>
      <!-- 视频 -->
      <view class="py-2" v-if="item.video">
        <video :src="item.video.src" :poster="item.video.poster" controls style="height: 300rpx;width: 500rpx;" loop></video>
      </view>
      <!-- 时间|操作 -->
      <view class="flex align-center justify-between">
        <text class="font-sm text-light-muted">{{item.created_at|formatTime}}</text>
        <view class="rounded p-1 bg-light" @click="$emit('action',{item,index})">
          <text class="text-hover-primary iconfont font">&#xe62a;</text>
        </view>
      </view>
      <!-- 点赞列表，评论列表 -->
      <view class="bg-light mt-2" v-if="item.likes.length || item.comments.length">
        <!-- 点赞 -->
        <view v-if="item.likes.length" class="border-bottom flex align-start p-2">
          <text class="flex-shrink iconfont font text-hover-primary">&#xe637;</text>
          <view class="flex flex-wrap flex-1 ml-1">
            <text v-for="(s,si) in item.likes" :key='si' class="font text-hover-primary ml-1">{{s.name}}</text>
          </view>
        </view>
        <!-- 评论 -->
        <view v-if="item.comments.length" class="border-bottom flex align-start p-2">
          <text class="flex-shrink iconfont font-md text-hover-primary">&#xe64e;</text>
          <view class="flex flex-column flex-wrap flex-1 ml-2">
            <view class="flex" v-for="(c,ci) in item.comments" :key="ci">
              <text class="text-hover-primary font">{{c.user.name}}:</text>
              <text class="font text-dark flex-1" @click="$emit('reply',{item,index,reply:c.user})">{{c.content}}</text>
            </view>
          </view>
        </view>
      </view>
    </view>
  </view>
</template>
<script>
  import freeAvatar from '@/components/free-ui/free-avatar.vue';
  import freeImage from '@/components/free-ui/free-image.vue';
  import $T from '@/common/free-lib/time.js';
  export default {
    components:{
      freeAvatar,
      freeImage
    },
    filters:{
      formatTime(value){
        return $T.gettime(value);
      }
    },
    props:{
      item:Object,
      index:Number
    },
    methods:{
      // 查看大图
      preview(src){
        uni.previewImage({
          current:src,
          urls:this.item.image
        })
      }
    }
  }
</script>
<style>
</style>