Refactor category budget setting

The category budget setting is now based on the monthly budget amount, which is then divided into daily and weekly budgets.

src/contexts/budget/budgetUtils.ts

@@ -1,4 +1,3 @@
-
 import { BudgetData, BudgetPeriod, CategoryBudget, Transaction } from './types';
 import { EXPENSE_CATEGORIES } from '@/constants/categoryIcons';
 
@@ -53,7 +52,7 @@ export const calculateCategorySpending = (
   }));
 };
 
-// 예산 데이터 업데이트 계산
+// 예산 데이터 업데이트 계산 - 수정된 함수
 export const calculateUpdatedBudgetData = (
   prevBudgetData: BudgetData,
   type: BudgetPeriod,
@@ -61,79 +60,35 @@ export const calculateUpdatedBudgetData = (
 ): BudgetData => {
   console.log(`예산 업데이트 계산: 타입=${type}, 금액=${amount}`);
   
-  if (type === 'monthly') {
-    // 문제 수정: 일일 예산은 월간/30, 주간 예산은 월간/4.3으로 계산
-    const dailyAmount = Math.round(amount / 30);
-    const weeklyAmount = Math.round(amount / 4.3);
-    
-    console.log(`월간 예산 ${amount}원으로 설정 → 일일: ${dailyAmount}원, 주간: ${weeklyAmount}원`);
-    
-    return {
-      daily: {
-        targetAmount: dailyAmount,
-        spentAmount: prevBudgetData.daily.spentAmount,
-        remainingAmount: Math.max(0, dailyAmount - prevBudgetData.daily.spentAmount)
-      },
-      weekly: {
-        targetAmount: weeklyAmount,
-        spentAmount: prevBudgetData.weekly.spentAmount,
-        remainingAmount: Math.max(0, weeklyAmount - prevBudgetData.weekly.spentAmount)
-      },
-      monthly: {
-        targetAmount: amount,
-        spentAmount: prevBudgetData.monthly.spentAmount,
-        remainingAmount: Math.max(0, amount - prevBudgetData.monthly.spentAmount)
-      }
-    };
-  } else if (type === 'weekly') {
-    // 문제 수정: 월간 예산은 주간*4.3, 일일 예산은 주간/7로 계산
-    const monthlyAmount = Math.round(amount * 4.3);
-    const dailyAmount = Math.round(amount / 7);
-    
-    console.log(`주간 예산 ${amount}원으로 설정 → 월간: ${monthlyAmount}원, 일일: ${dailyAmount}원`);
-    
-    return {
-      daily: {
-        targetAmount: dailyAmount,
-        spentAmount: prevBudgetData.daily.spentAmount,
-        remainingAmount: Math.max(0, dailyAmount - prevBudgetData.daily.spentAmount)
-      },
-      weekly: {
-        targetAmount: amount,
-        spentAmount: prevBudgetData.weekly.spentAmount,
-        remainingAmount: Math.max(0, amount - prevBudgetData.weekly.spentAmount)
-      },
-      monthly: {
-        targetAmount: monthlyAmount,
-        spentAmount: prevBudgetData.monthly.spentAmount,
-        remainingAmount: Math.max(0, monthlyAmount - prevBudgetData.monthly.spentAmount)
-      }
-    };
-  } else {
-    // 문제 수정: 주간 예산은 일일*7, 월간 예산은 일일*30으로 계산
-    const weeklyAmount = Math.round(amount * 7);
-    const monthlyAmount = Math.round(amount * 30);
-    
-    console.log(`일일 예산 ${amount}원으로 설정 → 주간: ${weeklyAmount}원, 월간: ${monthlyAmount}원`);
-    
-    return {
-      daily: {
-        targetAmount: amount,
-        spentAmount: prevBudgetData.daily.spentAmount,
-        remainingAmount: Math.max(0, amount - prevBudgetData.daily.spentAmount)
-      },
-      weekly: {
-        targetAmount: weeklyAmount,
-        spentAmount: prevBudgetData.weekly.spentAmount,
-        remainingAmount: Math.max(0, weeklyAmount - prevBudgetData.weekly.spentAmount)
-      },
-      monthly: {
-        targetAmount: monthlyAmount,
-        spentAmount: prevBudgetData.monthly.spentAmount,
-        remainingAmount: Math.max(0, monthlyAmount - prevBudgetData.monthly.spentAmount)
-      }
-    };
-  }
+  // 카테고리 예산은 항상 월간 기준이므로, monthly 계산 방식 사용
+  // 월간→주간→일간 순서로 변환
+  const monthlyAmount = type === 'monthly' ? amount : 
+                        type === 'weekly' ? Math.round(amount * 4.3) : 
+                        Math.round(amount * 30);
+  
+  // 월간 금액에서 주간, 일간 계산
+  const weeklyAmount = Math.round(monthlyAmount / 4.3);
+  const dailyAmount = Math.round(monthlyAmount / 30);
+  
+  console.log(`예산 변환: 월간=${monthlyAmount}원, 주간=${weeklyAmount}원, 일간=${dailyAmount}원`);
+  
+  return {
+    daily: {
+      targetAmount: dailyAmount,
+      spentAmount: prevBudgetData.daily.spentAmount,
+      remainingAmount: Math.max(0, dailyAmount - prevBudgetData.daily.spentAmount)
+    },
+    weekly: {
+      targetAmount: weeklyAmount,
+      spentAmount: prevBudgetData.weekly.spentAmount,
+      remainingAmount: Math.max(0, weeklyAmount - prevBudgetData.weekly.spentAmount)
+    },
+    monthly: {
+      targetAmount: monthlyAmount,
+      spentAmount: prevBudgetData.monthly.spentAmount,
+      remainingAmount: Math.max(0, monthlyAmount - prevBudgetData.monthly.spentAmount)
+    }
+  };
 };
 
 // 지출액 계산 (일일, 주간, 월간)