<template>
  <div class="nbank-institution-section mb-6">
    <div class="flex items-center mb-4">
      <span class="font-bold text-gray-800">非银机构 {{ nbankTotal }}次</span>
    </div>
    
    <div class="grid grid-cols-2 gap-4">
      <!-- 饼图 -->
      <div class="h-64">
        <v-chart class="chart-container" :option="pieChartOption" autoresize />
      </div>
      
      <!-- 详细列表 -->
      <div class="space-y-2">
        <div 
          v-for="(item, index) in detailList" 
          :key="index"
          class="flex justify-between items-center text-sm py-1 border-b border-gray-100"
        >
          <span class="text-gray-600">{{ item.label }}</span>
          <span class="text-[#333333] font-bold">{{ item.value }}次</span>
        </div>
      </div>
    </div>
  </div>
</template>

<script setup>
import { computed } from 'vue'
import VChart from 'vue-echarts'
import { use } from 'echarts/core'
import { CanvasRenderer } from 'echarts/renderers'
import { PieChart } from 'echarts/charts'
import {
  TitleComponent,
  TooltipComponent,
  LegendComponent
} from 'echarts/components'
import { getNBankApplicationDetails, FIELD_LABELS } from '../utils/dataParser'

// 注册ECharts组件
use([
  CanvasRenderer,
  PieChart,
  TitleComponent,
  TooltipComponent,
  LegendComponent
])

const props = defineProps({
  data: {
    type: Object,
    required: true,
    default: () => ({})
  },
  period: {
    type: String,
    required: true
  }
})

// 获取非银机构申请详情
const nbankDetails = computed(() => getNBankApplicationDetails(props.data, props.period))

// 计算非银机构总次数
const nbankTotal = computed(() => {
  const details = nbankDetails.value
  return Object.values(details).reduce((sum, val) => sum + (val || 0), 0)
})

// 详细列表
const detailList = computed(() => {
  const details = nbankDetails.value
  const labels = FIELD_LABELS.nbank
  
  return Object.entries(details)
    .filter(([key, value]) => value > 0)
    .map(([key, value]) => ({
      key,
      label: labels[key] || key,
      value
    }))
    .sort((a, b) => b.value - a.value)
})

// 饼图配置
const pieChartOption = computed(() => {
  const list = detailList.value
  
  if (list.length === 0) {
    return {
      title: {
        text: '暂无数据',
        left: 'center',
        top: 'center',
        textStyle: {
          color: '#999',
          fontSize: 14
        }
      }
    }
  }

  return {
    tooltip: {
      trigger: 'item',
      formatter: '{b}: {c}次 ({d}%)'
    },
    legend: {
      orient: 'vertical',
      left: 'left',
      top: 'middle',
      textStyle: {
        fontSize: 11
      }
    },
    series: [
      {
        name: '申请次数',
        type: 'pie',
        radius: ['40%', '70%'],
        center: ['60%', '50%'],
        avoidLabelOverlap: false,
        itemStyle: {
          borderRadius: 4,
          borderColor: '#fff',
          borderWidth: 2
        },
        label: {
          show: true,
          formatter: '{b}\n{c}次'
        },
        emphasis: {
          label: {
            show: true,
            fontSize: 14,
            fontWeight: 'bold'
          }
        },
        data: list.map(item => ({
          value: item.value,
          name: item.label
        }))
      }
    ]
  }
})
</script>

<style scoped>
.nbank-institution-section {
  background: #f9fafb;
  padding: 16px;
  border-radius: 8px;
}
</style>


