<template>
  <div class="customer-cluster">
    <el-card shadow="hover">
      <div class="chart-title">客户群体聚类分析</div>
      <div ref="chart" class="chart-container"></div>
    </el-card>
  </div>
</template>

<script>
import * as echarts from 'echarts'
export default {
  name: 'CustomerCluster',
  props: {
    customerCluster: {
      type: Array,
      required: true,
      default: () => []
    }
  },
  data () {
    return {
      chartInstance: null,
      chartOptions: {
        tooltip: {
          trigger: 'item',
          formatter: (params) => {
            return `客户名称: ${params.data[2]}<br />购买频次: ${params.data[0]}<br />客单价: ${params.data[1]}`
          }
        },
        xAxis: { name: '购买频次' },
        yAxis: { name: '客单价' },
        series: [
          {
            symbolSize: 10,
            type: 'scatter',
            data: []
          }
        ]
      }
    }
  },
  watch: {
    customerCluster: {
      immediate: true,
      handler(newVal) {
        this.updateChart()
      }
    }
  },
  mounted () {
    this.initChart()
  },
  beforeDestroy () {
    if (this.chartInstance) {
      this.chartInstance.dispose()
    }
    window.removeEventListener('resize', this.handleResize)
  },
  methods: {
    initChart () {
      const chartDom = this.$refs.chart
      if (!chartDom) return
      this.chartInstance = echarts.init(chartDom)
      this.updateChart()
      window.addEventListener('resize', this.handleResize)
    },
    updateChart () {
      if (!this.chartInstance) return
      // 格式化数据
      const chartData = this.customerCluster.map(item => [item.purchaseFreq, item.avgOrderAmount, item.customerName])
      this.chartOptions.series[0].data = chartData
      this.chartInstance.setOption(this.chartOptions)
    },
    handleResize () {
      if (this.chartInstance) {
        this.chartInstance.resize()
      }
    }
  }
}
</script>

<style scoped>
.customer-cluster {
  width: 100%;
  height: 100%;
}
.chart-title {
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 8px;
}
.chart-container {
  width: 100%;
  height: 400px;
}
.el-card {
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  padding: 16px;
  display: flex;
  flex-direction: column;
}
</style>
