<template>
  <div class="app-container" style="padding-bottom: 100px;">
    <div class="card_wrap">
      <div class="card">
        <div class="header">
          <div class="card_title">总销售额</div>
          <el-tooltip effect="dark" content="订单支付金额" placement="top">
            <i class="icon el-icon-warning-outline"></i>
          </el-tooltip>
        </div>
        <div class="number">{{ topData.totalSales || 0 }}</div>
        <div class="row">平均每单{{ topData.averageSales || 0 }}</div>
        <div class="row">今日销售额{{ topData.totalSalesToday || 0 }}</div>
      </div>
      <div class="card">
        <div class="header">
          <div class="card_title">支付笔数</div>
        </div>
        <div class="number">{{ topData.paymentsNumber }}</div>
        <div class="row"></div>
        <div class="row">今日支付笔数{{ topData.paymentsNumberToday || 0 }}</div>
      </div>
      <div class="card">
        <div class="header">
          <div class="card_title">用户数</div>
        </div>
        <div class="number">{{ topData.totalUser }}</div>
        <div class="row"></div>
        <div class="row">今日新增 {{ topData.userToday || 0 }} <i class="icon el-icon-caret-top"></i> </div>
      </div>
    </div>
    <!-- 销售额 -->
    <div class="chart_wrap">
      <div class="item">
        <div class="header">
          <div class="tab_wrap">
            <div class="item active">销售额</div>
          </div>
          <el-radio-group v-model="saleActive" @change="dateAmount">
            <el-radio-button label="7">近7天</el-radio-button>
            <el-radio-button label="30">30天</el-radio-button>
          </el-radio-group>
        </div>
        <div class="chart" ref="saleChart" v-loading="saleLoading" style="height: 400px;">
        </div>
      </div>
    </div>
    <div class="chart_wrap" style="display: flex;">
      <!-- 商品销售排行 -->
      <div class="item">
        <div class="header">
          <div class="tab_wrap">
            <div class="item active">商品销售排行</div>
          </div>
          <el-radio-group v-model="saleTableActive" @change="dateProduct">
            <el-radio-button label="7">近7天</el-radio-button>
            <el-radio-button label="30">30天</el-radio-button>
          </el-radio-group>
        </div>
        <div class="sale_data">
          <div class="card">
            <div class="sale_data_header">
              <div class="card_title">销售数量</div>
            </div>
            <div class="number">{{ productCount }}</div>
          </div>
          <div class="card">
            <div class="sale_data_header">
              <div class="card_title">销售金额</div>
            </div>
            <div class="number">￥{{ productSum }}</div>
          </div>
        </div>
        <div class="table">
          <el-table :data="saleTable" v-loading="saleTableLoading">
            <el-table-column label="排名" prop="productId"></el-table-column>
            <el-table-column label="商品名称" prop="productName"></el-table-column>
            <el-table-column label="数量" prop="productNum"></el-table-column>
            <el-table-column label="金额" prop="amount"></el-table-column>
          </el-table>
          <div class="head-container" style="padding-top: 20px;display: flex;justify-content: flex-end;">
            <el-pagination :total="saleTableTotal" :current-page="saleTablePage" @current-change="paginationChange"
              layout="total, prev, pager, next, jumper"></el-pagination>
          </div>
        </div>
      </div>
      <!-- 支付类型占比 -->
      <div class="item" style="margin-left: 20px;">
        <div class="header">
          <div class="tab_wrap">
            <div class="item active">支付占比类型</div>
          </div>
          <el-radio-group v-model="payChartDay" @change="datePayType">
            <el-radio-button label="7">近7天</el-radio-button>
            <el-radio-button label="30">30天</el-radio-button>
          </el-radio-group>
        </div>
        <div style="height: 400px;margin-top: 30px;" ref="payChart" v-loading="payChartLoading"></div>
      </div>
    </div>
  </div>
</template>

<script>
import { summaryGet, summaryTodayGet, dateProduct, dateAmount, datePayType } from '@/api/home'
import echarts from 'echarts'
import { debounce } from '@/utils'
export default {
  name: 'home',
  data() {
    return {
      topData: '',
      saleTab: 'sale',
      saleActive: '7',
      saleLoading: false,
      saleChart: null,
      payChartDay: '7',
      payChartLoading: false,
      payChart: null,
      chartType: 1,
      productCount: 0,
      productSum: 0,
      saleTableActive: '7',
      saleTable: [],
      saleTableLoading: false,
      saleTablePage: 1,
      saleTableTotal: 0,
      __resizeHandler: null
    }
  },
  mounted() {
    this.summaryGet()
    this.dateAmount()
    this.dateProduct()
    this.datePayType()

    this.__resizeHandler = debounce(() => {
      if (this.saleChart) {
        this.saleChart.resize()
      }
      if (this.payChart) {
        this.payChart.resize()
      }
    }, 100)
    window.addEventListener('resize', this.__resizeHandler)
  },
  methods: {
    // 初始化销售额图标
    initSaleChart(time, data) {
      this.saleChart = null
      this.saleChart = echarts.init(this.$refs.saleChart)
      this.saleChart.setOption({
        title: {
          text: '销售趋势',
          x: 'center'
        },
        tooltip: {
          trigger: 'axis'
        },
        xAxis: [{
          type: 'category',
          data: time,
          axisTick: {
            alignWithLabel: true
          },
          axisLine: {
            lineStyle: {
              color: '#999'
            }
          },
          axisLabel: {
            rotate: time.length <= 7 ? 0 : 45,
            interval: 0,
            textStyle: {
              fontSize: '9'
            }
          }
        }],
        color: '#409eff',
        yAxis: [
          {
            type: 'value',
            axisLine: {
              lineStyle: {
                color: '#999'
              }
            },
            splitLine: {
              lineStyle: {
                type: 'dashed',
                color: '#ececec'
              }
            }
          }
        ],
        series: [
          {
            data: data,
            type: 'bar',
            barWidth: time.length <= 7 ? '50%' : '30%'
          }
        ]
      })
    },
    // 初始化销售额图表
    initPayChart(data) {
      this.payChart = echarts.init(this.$refs.payChart)
      this.payChart.setOption({
        tooltip: {
          trigger: 'item'
        },
        legend: {
          top: '5%',
          left: 'center'
        },
        color: ['#409eff', '#91cc75', '#fac858', '#ee6666', '#73c0de', '#3ba272', '#fc8452', '#9a60b4', '#ea7ccc'],
        series: [
          {
            type: 'pie',
            radius: ['40%', '70%'],
            avoidLabelOverlap: false,
            label: {
              show: false,
              position: 'center'
            },
            emphasis: {
              label: {
                show: true,
                fontSize: 20
              }
            },
            labelLine: {
              show: false
            },
            data: data
          }
        ]
      })
    },
    // 获取销售额柱状图数据
    async dateAmount() {
      try {
        this.saleLoading = true
        const res = await dateAmount(this.saleActive)
        const data = res.total.map(item => item.amount)
        const time = res.total.map(item => item.tradeDay)
        this.initSaleChart(time, data)
        setTimeout(() => {
          this.saleLoading = false
        }, 300);
      } catch (error) {
        console.log(error)
      }
    },
    paginationChange(e) {
      this.saleTablePage = e
      this.dateProduct()
    },
    // 获取销售额排行表格数据
    async dateProduct() {
      try {
        this.saleTableLoading = true
        const res = await dateProduct(this.saleTableActive, this.saleTablePage)
        this.saleTable = res.totalProduct
        this.saleTableTotal = res.productCount
        this.productCount = res.productCount
        this.productSum = res.productSum
        setTimeout(() => {
          this.saleTableLoading = false
        }, 300);
      } catch (error) {
        console.log(error)
      }
    },
    // 支付类型占比 饼图
    async datePayType() {
      try {
        this.payChartLoading = true
        const res = await datePayType(this.payChartDay)
        const data = res.countPayType.map(item => {
          return {
            value: item.count,
            name: item.payType
          }
        })
        setTimeout(() => {
          this.payChartLoading = false
        }, 300);
        this.initPayChart(data)
      } catch (error) {
        console.log(error)
      }
    },
    // 汇总数据
    async summaryGet() {
      try {
        const res1 = await summaryGet()
        const res2 = await summaryTodayGet()
        this.topData = {
          ...res1,
          ...res2
        }
      } catch (error) {
        console.log(error)
      }
    },
  }
}
</script>

<style scoped lang="scss">
.app-container {
  padding: 20px;
  background-color: #F5F5F5;
}

.card_wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;

  .card {
    flex: 1;
    background-color: #fff;
    border-radius: 2px;
    padding: 0 20px;

    .header {
      display: flex;
      justify-content: space-between;
      color: #999;
      padding-top: 20px;

      .card_title {
        font-size: 14px;
        flex: 1;
      }
    }

    .number {
      padding: 20px 0 10px 0;
      font-size: 24px;
      height: 60px;
    }

    .row {
      height: 40px;
      color: #555;
      font-size: 14px;
      display: flex;
      align-items: center;

      &:not(:last-child) {
        border-bottom: 1px solid #ececec;
      }

      .icon {
        color: rgb(255, 85, 85);
        margin-left: 4px;
      }
    }
  }
}

.chart_wrap {
  margin-top: 20px;

  .sale_data {
    display: flex;

    .card {
      flex: 1;
      background-color: #fff;
      border-radius: 2px;
      padding: 0 20px;

      .sale_data_header {
        display: flex;
        justify-content: space-between;
        color: #999;
        padding-top: 20px;

        .card_title {
          font-size: 14px;
          flex: 1;
        }
      }

      .number {
        padding-top: 10px;
        font-size: 24px;
        height: 60px;
      }
    }
  }

  .item {
    flex: 1;
    background-color: #fff;
    border-radius: 2px;

    .header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid #ececec;
      padding: 0 20px;

      .tab_wrap {
        display: flex;
        $color: #1890FF;

        .item {
          padding: 0 10px;
          height: 60px;
          display: flex;
          align-items: center;
          justify-content: center;
          font-size: 14px;
          color: $color;

          &.active {
            position: relative;

            &::after {
              content: "";
              width: 100%;
              border-bottom: 2px solid $color;
              position: absolute;
              bottom: 0;
              left: 0;
            }
          }
        }
      }
    }

    .chart {
      padding: 20px 0;
      height: 300px;
    }

    .table {
      padding: 20px;
    }
  }
}
</style>
