feat: 添加存款分类设置功能，优化预算管理界面

Web/src/components/Budget/BudgetEditPopup.vue

@@ -2,7 +2,7 @@
   <PopupContainer 
     v-model="visible" 
     :title="isEdit ? `编辑${getCategoryName(form.category)}预算` : `新增${getCategoryName(form.category)}预算`" 
-    height="85%"
+    height="75%"
   >
     <div class="add-budget-form">
       <van-form>
@@ -175,14 +175,6 @@ const fetchCategories = async () => {
   }
 }
 
-watch(() => form.category, (newVal, oldVal) => {
-  // 只有在手动切换类型且不是初始化编辑数据时才清空
-  // 为简单起见，如果旧值存在（即不是第一次赋值），则清空已选分类
-  if (oldVal !== undefined) {
-    form.selectedCategories = []
-  }
-})
-
 const onSubmit = async () => {
   try {
     const data = {

Web/src/components/Budget/SavingsConfigPopup.vue

@@ -0,0 +1,181 @@
+<template>
+  <PopupContainer 
+    v-model="visible" 
+    title="设置存款分类" 
+    height="60%"
+  >
+    <div class="savings-config-content">
+      <div class="config-header">
+        <p class="subtitle">这些分类的统计值将计入“存款”中</p>
+      </div>
+
+      <div class="category-section">
+        <div class="section-title">可多选分类</div>
+        <div class="classify-buttons">
+          <van-button
+            v-if="incomeCategories.length > 0"
+            :type="isAllSelected ? 'primary' : 'default'"
+            size="small"
+            class="classify-btn all-btn"
+            @click="toggleAll"
+          >
+            {{ isAllSelected ? '取消全选' : '全选' }}
+          </van-button>
+          <van-button
+            v-for="item in incomeCategories"
+            :key="item.id"
+            :type="selectedCategories.includes(item.name) ? 'primary' : 'default'"
+            size="small"
+            class="classify-btn"
+            style="margin-bottom: 8px; margin-right: 8px;"
+            @click="toggleCategory(item.name)"
+          >
+            {{ item.name }}
+          </van-button>
+          <div v-if="incomeCategories.length === 0" class="no-data">暂无收入分类</div>
+        </div>
+      </div>
+    </div>
+    
+    <template #footer>
+      <van-button block round type="primary" @click="onSubmit">保存配置</van-button>
+    </template>
+  </PopupContainer>
+</template>
+
+<script setup>
+import { ref, computed, onMounted } from 'vue'
+import { showToast, showLoadingToast, closeToast } from 'vant'
+import { getCategoryList } from '@/api/transactionCategory'
+import { getConfig, setConfig } from '@/api/config'
+import PopupContainer from '@/components/PopupContainer.vue'
+
+const emit = defineEmits(['success'])
+
+const visible = ref(false)
+const categories = ref([])
+const selectedCategories = ref([])
+
+const open = async () => {
+  visible.value = true
+  await fetchCategories()
+  await fetchConfig()
+}
+
+defineExpose({
+  open
+})
+
+const incomeCategories = computed(() => {
+  return categories.value.filter(c => c.type === 1) // Income = 1
+})
+
+const isAllSelected = computed(() => {
+  return incomeCategories.value.length > 0 && 
+         incomeCategories.value.every(c => selectedCategories.value.includes(c.name))
+})
+
+const toggleCategory = (name) => {
+  const index = selectedCategories.value.indexOf(name)
+  if (index > -1) {
+    selectedCategories.value.splice(index, 1)
+  } else {
+    selectedCategories.value.push(name)
+  }
+}
+
+const toggleAll = () => {
+  if (isAllSelected.value) {
+    selectedCategories.value = []
+  } else {
+    selectedCategories.value = incomeCategories.value.map(c => c.name)
+  }
+}
+
+const fetchCategories = async () => {
+  try {
+    const res = await getCategoryList()
+    if (res.success) {
+      categories.value = res.data || []
+    }
+  } catch (err) {
+    console.error('获取分类列表失败', err)
+  }
+}
+
+const fetchConfig = async () => {
+  try {
+    const res = await getConfig('SavingsCategories')
+    if (res.success && res.data) {
+      selectedCategories.value = res.data.split(',').filter(x => x)
+    } else {
+      selectedCategories.value = []
+    }
+  } catch (err) {
+    console.error('获取配置失败', err)
+  }
+}
+
+const onSubmit = async () => {
+  showLoadingToast({ message: '保存中...', forbidClick: true })
+  try {
+    const value = selectedCategories.value.join(',')
+    const res = await setConfig('SavingsCategories', value)
+    if (res.success) {
+      showToast('配置已保存')
+      visible.value = false
+      emit('success')
+    }
+  } catch (err) {
+    console.error('保存配置失败', err)
+    showToast('保存失败')
+  } finally {
+    closeToast()
+  }
+}
+</script>
+
+<style scoped>
+.savings-config-content {
+  padding: 16px;
+}
+
+.config-header {
+  margin-bottom: 20px;
+}
+
+.subtitle {
+  font-size: 14px;
+  color: #969799;
+  margin: 0;
+}
+
+.section-title {
+  font-size: 16px;
+  font-weight: 500;
+  margin-bottom: 12px;
+}
+
+.classify-buttons {
+  display: flex;
+  flex-wrap: wrap;
+}
+
+.classify-btn {
+  margin-bottom: 8px;
+  margin-right: 8px;
+  border-radius: 20px;
+  min-width: 60px;
+}
+
+.all-btn {
+  border-style: dashed;
+}
+
+.no-data {
+  text-align: center;
+  color: #969799;
+  width: 100%;
+  padding: 20px 0;
+}
+</style>

Web/src/views/BudgetView.vue

@@ -2,7 +2,18 @@
   <div class="page-container-flex">
     <van-nav-bar title="预算管理" placeholder>
       <template #right>
-        <van-icon name="plus" size="20" @click="budgetEditRef.open({ category: activeTab })" />
+        <van-icon
+          v-if="activeTab !== BudgetCategory.Savings"
+          name="plus" 
+          size="20" 
+          @click="budgetEditRef.open({ category: activeTab })" 
+        />
+        <van-icon
+          v-else
+          name="info-o" 
+          size="20" 
+          @click="savingsConfigRef.open()"
+        />
       </template>
     </van-nav-bar>
 
@@ -123,12 +134,15 @@
                   status-tag-text="积累中"
                   @toggle-stop="handleToggleStop"
                   @switch-period="(dir) => handleSwitchPeriod(budget, dir)"
-                  @click="budgetEditRef.open({
-                    data: budget,
-                    isEditFlag: true,
-                    category: budget.category
-                  })"
                 >
+                  <template #tag>
+                    <!-- 占位，避免显示停止/恢复按钮 -->
+                    <span />
+                  </template>
+                  <template #actions>
+                    <!-- 占位，避免显示停止/恢复按钮 -->
+                    <span />
+                  </template>
                   <template #amount-info>
                     <div class="info-item">
                       <div class="label">已存</div>
@@ -164,6 +178,10 @@
       ref="budgetEditRef"
       @success="fetchBudgetList" 
     />
+    <SavingsConfigPopup
+      ref="savingsConfigRef"
+      @success="fetchBudgetList"
+    />
     </div>
   </div>
 </template>
@@ -176,9 +194,11 @@ import { BudgetPeriodType, BudgetCategory } from '@/constants/enums'
 import BudgetCard from '@/components/Budget/BudgetCard.vue'
 import BudgetSummary from '@/components/Budget/BudgetSummary.vue'
 import BudgetEditPopup from '@/components/Budget/BudgetEditPopup.vue'
+import SavingsConfigPopup from '@/components/Budget/SavingsConfigPopup.vue'
 
 const activeTab = ref(BudgetCategory.Expense)
 const budgetEditRef = ref(null)
+const savingsConfigRef = ref(null)
 
 const expenseBudgets = ref([])
 const incomeBudgets = ref([])

WebApi/Controllers/BudgetController.cs

@@ -4,6 +4,7 @@
 [Route("api/[controller]/[action]")]
 public class BudgetController(
     IBudgetService budgetService,
+    IConfigService configService,
     ILogger<BudgetController> logger) : ControllerBase
 {
     /// <summary>
@@ -23,6 +24,10 @@ public class BudgetController(
                 dtos.Add(BudgetDto.FromEntity(budget, currentAmount, referenceDate));
             }
 
+            // 创造虚拟的存款预算
+            dtos.Add(await GetVirtualSavingsDtoAsync(BudgetPeriodType.Month, referenceDate));
+            dtos.Add(await GetVirtualSavingsDtoAsync(BudgetPeriodType.Year, referenceDate));
+
             return dtos.Ok();
         }
         catch (Exception ex)
@@ -40,6 +45,15 @@ public class BudgetController(
     {
         try
         {
+            if (id == -1)
+            {
+                return (await GetVirtualSavingsDtoAsync(BudgetPeriodType.Year, referenceDate)).Ok();
+            }
+            if (id == -2)
+            {
+                return (await GetVirtualSavingsDtoAsync(BudgetPeriodType.Month, referenceDate)).Ok();
+            }
+
             var budget = await budgetService.GetByIdAsync(id);
             if (budget == null) return "预算不存在".Fail<BudgetDto>();
 
@@ -147,6 +161,84 @@ public class BudgetController(
         }
     }
 
+    private async Task<BudgetDto> GetVirtualSavingsDtoAsync(BudgetPeriodType periodType, DateTime? referenceDate = null)
+    {
+        var allBudgets = await budgetService.GetAllAsync();
+        var date = referenceDate ?? DateTime.Now;
+
+        decimal incomeLimitAtPeriod = 0;
+        decimal expenseLimitAtPeriod = 0;
+
+        var savingsCategories = await configService.GetConfigByKeyAsync<string>("SavingsCategories") ?? string.Empty;
+        var selectedCategoryList = savingsCategories.Split(',', StringSplitOptions.RemoveEmptyEntries);
+
+        foreach (var b in allBudgets)
+        {
+            if (b.IsStopped || b.Category == BudgetCategory.Savings) continue;
+
+            // 如果设置了存款分类，并且预算有指定分类，则只统计相关的预算
+            if (selectedCategoryList.Length > 0)
+            {
+                var budgetCategories = b.SelectedCategories.Split(',', StringSplitOptions.RemoveEmptyEntries);
+                if (budgetCategories.Length > 0 && !budgetCategories.Intersect(selectedCategoryList).Any())
+                {
+                    continue;
+                }
+            }
+
+            // 折算系数：根据当前请求的 periodType (Year 或 Month)，将预算 b 的 Limit 折算过来
+            decimal factor = 1.0m;
+
+            if (periodType == BudgetPeriodType.Year)
+            {
+                factor = b.Type switch
+                {
+                    BudgetPeriodType.Month => 12,
+                    BudgetPeriodType.Week => 52,
+                    BudgetPeriodType.Year => 1,
+                    _ => 0
+                };
+            }
+            else if (periodType == BudgetPeriodType.Month)
+            {
+                factor = b.Type switch
+                {
+                    BudgetPeriodType.Month => 1,
+                    BudgetPeriodType.Week => 52m / 12m,
+                    BudgetPeriodType.Year => 1m / 12m,
+                    _ => 0
+                };
+            }
+            else
+            {
+                factor = 0; // 其他周期暂不计算虚拟存款
+            }
+
+            if (b.Category == BudgetCategory.Income) incomeLimitAtPeriod += b.Limit * factor;
+            else if (b.Category == BudgetCategory.Expense) expenseLimitAtPeriod += b.Limit * factor;
+        }
+
+        var virtualBudget = new BudgetRecord
+        {
+            Id = periodType == BudgetPeriodType.Year ? -1 : -2,
+            Name = periodType == BudgetPeriodType.Year ? "年度存款" : "月度存款",
+            Category = BudgetCategory.Savings,
+            Type = periodType,
+            Limit = incomeLimitAtPeriod - expenseLimitAtPeriod,
+            StartDate = periodType == BudgetPeriodType.Year ? new DateTime(date.Year, 1, 1) : new DateTime(date.Year, date.Month, 1),
+            SelectedCategories = savingsCategories
+        };
+
+        // 计算实际发生的 收入 - 支出
+        var incomeHelper = new BudgetRecord { Category = BudgetCategory.Income, Type = periodType, StartDate = virtualBudget.StartDate, SelectedCategories = savingsCategories };
+        var expenseHelper = new BudgetRecord { Category = BudgetCategory.Expense, Type = periodType, StartDate = virtualBudget.StartDate, SelectedCategories = savingsCategories };
+
+        var actualIncome = await budgetService.CalculateCurrentAmountAsync(incomeHelper, date);
+        var actualExpense = await budgetService.CalculateCurrentAmountAsync(expenseHelper, date);
+
+        return BudgetDto.FromEntity(virtualBudget, actualIncome - actualExpense, date);
+    }
+
     private async Task<string> ValidateBudgetSelectedCategoriesAsync(BudgetRecord record)
     {
         var allBudgets = await budgetService.GetAllAsync();