<template>
  <div class="list-wrapper">
        <div class="header-wrapper header-padding" v-if="fixed">
          <div class="header">
            <div style="width: 25%; text-align: left;">我邀请的好友</div>
            <div class="register-time">注册时间</div>
            <div style="width: 20%; text-align: right;">我的佣金</div>
          </div>
        </div>

    <Scroll ref="scroll" class="list" :options="scrollOptions" :scrollEvents="['scroll']" :data="list"
            @scroll="scroll"
            @pulling-up="onPullingUp">
      <Banner ref="banner"></Banner>

      <div class="list-comp" ref="header">
        <div class="title">邀请记录</div>
        <div class="header-wrapper">
          <div class="header">
            <div style="width: 25%; text-align: left;">我邀请的好友</div>
            <div class="register-time">注册时间</div>
            <div style="width: 20%; text-align: right;">我的佣金</div>
          </div>
        </div>
      </div>

      <template v-if="list.length">
        <div class="item" v-for="item in list">
          <div class="name"
               style="width: 25%; text-align: center; text-overflow:ellipsis; overflow: hidden; white-space: nowrap;">
            {{item.nickname}}
          </div>
          <div class="register-time">{{item.dateStr}}</div>
          <div class="amount" style="width: 20%; text-align: center;">{{item.amountStr}}</div>
        </div>
      </template>

      <div class="empty" v-else>
        快去邀请好友吧！
      </div>

      <div class="footer">
      </div>
    </Scroll>
  </div>
</template>

<script>
import { Scroll } from 'cube-ui';
import Banner from './banner';
import { createNamespacedHelpers } from 'vuex';

const { mapState, mapActions } = createNamespacedHelpers('gain');

export default {
  data() {
    return {
      scrollOptions: {
        bounce: {
          top: false
        },
        pullUpLoad: true
      },
      fixed: false
    };
  },
  mounted() {
    this.fetchList();
    this.fetchResource().then(() => {
      this.$nextTick(() => {
        this.$refs.scroll.$forceUpdate();
      });
    });
  },
  methods: {
    ...mapActions(['fetchList', 'fetchResource']),

    async onPullingUp() {
      const result = await this.fetchList();

      if (!result) {
        this.$refs.scroll.$forceUpdate();
      }
    },
    scroll({ y }) {
      const height = this.$refs.banner.$el.offsetHeight + this.$refs.header.offsetHeight;

      if (-y >= height) {
        this.fixed = true;
      } else {
        this.fixed = false;
      }
    }
  },
  computed: {
    ...mapState(['list']),
  },
  components: {
    Scroll,
    Banner
  }
};
</script>

<style lang="scss" scoped>
  .list-comp {
    padding: 40px 30px 0 30px;
  }

  .header-padding {
    margin: 0 30px 0 30px;
    z-index: 100;
    background-color: white;
    width: calc(100% - 60px);
  }

  .list-wrapper {
    height: 100%;
  }

  .list-comp {
    height: 100%;
  }

  .title {
    font-size: 34px;
    color: #222;
    text-align: center;
    font-weight: bold;
    margin-bottom: 20px;
  }

  .header-wrapper {
    position: relative;
    height: 100px;
  }

  .header {
    display: flex;
    font-size: 28px;
    color: #b0b0b0;
    justify-content: space-between;
    height: 100px;
    line-height: 100px;

    .fixed {
      position: absolute;
    }
  }

  .header:before {
    content: " ";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 1px;
    border-top: 1px solid #b0b0b0;
    -webkit-transform-origin: 0 0;
    transform-origin: 0 0;
    -webkit-transform: scaleY(0.5);
    transform: scaleY(0.5);
  }

  .register-time {
    position: absolute;
    width: 100%;
    text-align: center;
  }

  .list {
    height: 100%;
  }

  .item {
    height: 100px;
    font-size: 28px;
    color: #444;
    display: flex;
    border-bottom: 0.5PX solid #e0e0e0;
    line-height: 100px;
    position: relative;
    justify-content: space-between;
    margin: 0 30px 0 30px;
  }

  .empty {
    width: 100%;
    height: 150px;
    font-size: 28px;
    color: #b0b0b0;
    line-height: 150px;
    text-align: center;
  }

  .footer {
    height: 98px;
    width: 100%;
  }

</style>