<template>
  <view class="chat-item" :class="active ? 'active' : ''">
    <!-- rich-text中的表情包会屏蔽事件，所以这里用一个遮罩层捕获点击事件 -->
    <view class="mask" @tap="showChatBox()"></view>
    <view class="left">
      <head-image :url="chat.headImage" :name="chat.showName"></head-image>
    </view>
    <view class="chat-right">
      <view class="chat-name">
        <view class="chat-name-text">
          <view>{{ chat.showName }}</view>
        </view>
        <view class="chat-time">{{ $date.toTimeText(chat.lastSendTime, true) }}</view>
      </view>
      <view class="chat-content">
        <view class="chat-at-text">{{ atText }}</view>
        <view class="chat-send-name" v-if="isShowSendName">{{ chat.sendNickName + ':&nbsp;' }}</view>
        <rich-text class="chat-content-text" :nodes="$emo.transform(chat.lastContent,'emoji-small')"></rich-text>
        <uni-badge v-if="chat.unreadCount > 0" :max-num="99" :text="chat.unreadCount" />
      </view>
    </view>
  </view>
</template>

<script>
import { mapGetters } from 'vuex'

export default {
  name: "chatItem",
  props: {
    chat: {
      type: Object
    },
    index: {
      type: Number
    },
    active: {
      type: Boolean,
      default: false
    }
  },
  computed: {
    // 映射 isLoading getter（用于判断是否正在加载消息）
    ...mapGetters('chatStore', ['isLoading']),

    isShowSendName() {
      if (!this.chat.sendNickName) return false
      const size = this.chat.messages.length
      if (size === 0) return false
      const lastMsg = this.chat.messages[size - 1]
      return this.$msgType.isNormal(lastMsg.type)
    },
    atText() {
      if (this.chat.atMe) return "[有人@我]"
      if (this.chat.atAll) return "[@全体成员]"
      return ""
    }
  },
  methods: {
    showChatBox() {
      // 初始化期间进入会话会导致消息不刷新
      if (!getApp().$vm.isInit || this.isLoading()) {
        uni.showToast({
          title: "正在初始化页面,请稍后...",
          icon: 'none'
        })
        return
      }
      uni.navigateTo({
        url: "/pages/chat/chat-box?chatIdx=" + this.index
      })
    }
  }
}
</script>

<style scoped lang="scss">
.chat-item {
  height: 96rpx;
  display: flex;
  margin-bottom: 2rpx;
  position: relative;
  padding: 18rpx 20rpx;
  align-items: center;
  background-color: white;
  white-space: nowrap;

  &:hover {
    background-color: $im-bg-active;
  }

  &.active {
    background-color: $im-bg-active;
  }

  .mask {
    position: absolute;
    width: 100%;
    height: 100%;
    left: 0;
    right: 0;
    z-index: 99;
  }

  .left {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100rpx;
    height: 100rpx;
  }

  .chat-right {
    height: 100%;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-left: 20rpx;
    text-align: left;
    overflow: hidden;

    .chat-name {
      display: flex;

      .chat-name-text {
        flex: 1;
        font-size: $im-font-size-large;
        white-space: nowrap;
        overflow: hidden;
        display: flex;
        align-items: center;
      }

      .chat-time {
        font-size: $im-font-size-smaller-extra;
        color: $im-text-color-lighter;
        text-align: right;
        white-space: nowrap;
        overflow: hidden;
      }
    }

    .chat-content {
      display: flex;
      font-size: $im-font-size-smaller;
      color: $im-text-color-lighter;
      padding-top: 8rpx;
      align-items: center;

      .chat-at-text {
        color: $im-color-danger;
      }

      .chat-send-name {
        font-size: $im-font-size-smaller;
      }

      .chat-content-text {
        flex: 1;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
      }
    }
  }
}
</style>
