<template>
  <div class="item-distribution">
    <div class="chart-container" ref="itemChart"></div>
    <div class="legend-grid">
      <div v-for="(item, index) in chartsData.items" :key="index" class="legend-item">
        <div class="legend-dot" :style="{ backgroundColor: item.color }"></div>
        <div class="legend-text">{{ item.name }}: {{ item.value }}</div>
      </div>
    </div>
  </div>
</template>

<script>
import * as echarts from 'echarts'

export default {
  name: 'ItemDistribution',
  props: {
    chartsData: {
      type: Object,
      default: () => ({
        items: [
          
        ]
      })
    }
  },
  data() {
    return {
      chart: null
    }
  },
  mounted() {
    this.$nextTick(() => {
      this.initChart()
    })
  },
  watch: {
    chartsData: {
      deep: true,
      handler() {
        this.$nextTick(() => {
          if (this.chart) this.chart.dispose()
          this.initChart()
        })
      }
    }
  },
  methods: {
    initChart() {
      if (!this.$refs.itemChart) return
      this.chart = echarts.init(this.$refs.itemChart)
      const option = {
        responsive: true,
        maintainAspectRatio: false,
        series: [{
          type: 'pie',
          radius: ['50%', '70%'],
          data: this.chartsData.items.map(item => ({
            name: item.name,
            value: item.value,
            color: item.color
          })),
          itemStyle: {
            color: function(params) {
              return params.data.color || params.color
            }
          },
          label: {
            show: true,
            color: 'rgba(255, 255, 255, 0.7)',
            fontSize: 10,
            formatter: '{b}\n{d}%'
          }
        }]
      }
      this.chart.setOption(option)
    }
  },
  beforeDestroy() {
    if (this.chart) this.chart.dispose()
  }
}
</script>

<style lang="scss" scoped>
.item-distribution {
  .chart-container {
    height: 300rpx;
  }
  
  .legend-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8rpx;
    margin-top: 16rpx;
  }
  
  .legend-item {
    display: flex;
    align-items: center;
    font-size: 24rpx;
    
    .legend-dot {
      width: 12rpx;
      height: 12rpx;
      border-radius: 50%;
      margin-right: 8rpx;
    }
    
    .legend-text {
      color: rgba(255, 255, 255, 0.7);
    }
  }
}
</style>
