Refactor budgetUtils.ts

Refactor budgetUtils.ts to improve code organization and maintainability by splitting the logic into multiple files. The functionality remains the same.

src/contexts/budget/utils/spendingCalculation.ts

@@ -0,0 +1,58 @@
+
+import { BudgetData, Transaction } from '../types';
+
+// 지출액 계산 (일일, 주간, 월간)
+export const calculateSpentAmounts = (
+  transactions: Transaction[],
+  prevBudgetData: BudgetData
+): BudgetData => {
+  console.log("지출액 계산 시작, 트랜잭션 수:", transactions.length);
+  
+  // 지출 거래 필터링
+  const expenseTransactions = transactions.filter(t => t.type === 'expense');
+  
+  // 오늘 지출 계산
+  const todayExpenses = expenseTransactions.filter(t => {
+    if (t.date.includes('오늘')) return true;
+    return false;
+  });
+  const dailySpent = todayExpenses.reduce((sum, t) => sum + t.amount, 0);
+  
+  // 이번 주 지출 계산 (단순화된 버전)
+  const weeklyExpenses = expenseTransactions.filter(t => {
+    if (t.date.includes('오늘') || t.date.includes('어제') || t.date.includes('이번주')) return true;
+    return true;
+  });
+  const weeklySpent = weeklyExpenses.reduce((sum, t) => sum + t.amount, 0);
+  
+  // 이번 달 총 지출 계산
+  const monthlySpent = expenseTransactions.reduce((sum, t) => sum + t.amount, 0);
+
+  // 기존 예산 목표 유지 (없으면 기본값 0)
+  const dailyTarget = prevBudgetData?.daily?.targetAmount || 0;
+  const weeklyTarget = prevBudgetData?.weekly?.targetAmount || 0;
+  const monthlyTarget = prevBudgetData?.monthly?.targetAmount || 0;
+
+  // 예산 데이터 업데이트
+  const updatedBudget = {
+    daily: {
+      targetAmount: dailyTarget,
+      spentAmount: dailySpent,
+      remainingAmount: Math.max(0, dailyTarget - dailySpent)
+    },
+    weekly: {
+      targetAmount: weeklyTarget,
+      spentAmount: weeklySpent,
+      remainingAmount: Math.max(0, weeklyTarget - weeklySpent)
+    },
+    monthly: {
+      targetAmount: monthlyTarget,
+      spentAmount: monthlySpent,
+      remainingAmount: Math.max(0, monthlyTarget - monthlySpent)
+    }
+  };
+  
+  console.log("지출액 계산 결과:", updatedBudget);
+  
+  return updatedBudget;
+};