feat:增加账本统计模块

src/utils/home/ledgerUtil.ts

@@ -0,0 +1,24 @@
+import { ILedgerRecord } from '@/types/ledger.ts'
+import { IStatsChart } from 'vue3-common/types'
+
+export const statsByField = (records: ILedgerRecord[],
+  field: keyof ILedgerRecord): IStatsChart[] => {
+  const statsMap = new Map<string, number>()
+
+  records.forEach((record) => {
+    const fieldValue = record[field] as string
+    const filedStats = record.totalPrice as number
+
+    const currentTotal = statsMap.get(fieldValue) || 0
+    // 计算当前字段对应的统计数据
+    statsMap.set(fieldValue, currentTotal + filedStats)
+  })
+
+  return Array.from(statsMap.entries())
+    .map(([name, value]) => ({
+      name,
+      value: Number(value.toFixed(2))
+    }))
+    .sort((a, b) => b.value - a.value)
+    .slice(0, 5)
+}