TaxHacker/lib/stats.ts

import { Transaction } from "@/prisma/client"

export function calcTotalPerCurrency(transactions: Transaction[]): Record<string, number> {
  return transactions.reduce(
    (acc, transaction) => {
      if (transaction.convertedCurrencyCode) {
        acc[transaction.convertedCurrencyCode.toUpperCase()] =
          (acc[transaction.convertedCurrencyCode.toUpperCase()] || 0) + (transaction.convertedTotal || 0)
      } else if (transaction.currencyCode) {
        acc[transaction.currencyCode.toUpperCase()] =
          (acc[transaction.currencyCode.toUpperCase()] || 0) + (transaction.total || 0)
      }
      return acc
    },
    {} as Record<string, number>
  )
}