Files
EmailBill/Service/Budget/BudgetSavingsService.cs
SunCheng e93c3d6bae
All checks were successful
Docker Build & Deploy / Build Docker Image (push) Successful in 27s
Docker Build & Deploy / Deploy to Production (push) Successful in 9s
Docker Build & Deploy / Cleanup Dangling Images (push) Successful in 2s
Docker Build & Deploy / WeChat Notification (push) Successful in 2s
测试覆盖率
2026-01-28 17:00:58 +08:00

873 lines
32 KiB
C#
Raw Blame History

This file contains ambiguous Unicode characters
This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.
using Service.Transaction;
namespace Service.Budget;
public interface IBudgetSavingsService
{
Task<BudgetResult> GetSavingsDtoAsync(
BudgetPeriodType periodType,
DateTime? referenceDate = null,
IEnumerable<BudgetRecord>? existingBudgets = null);
}
public class BudgetSavingsService(
IBudgetRepository budgetRepository,
IBudgetArchiveRepository budgetArchiveRepository,
ITransactionStatisticsService transactionStatisticsService,
IConfigService configService,
IDateTimeProvider dateTimeProvider
) : IBudgetSavingsService
{
public async Task<BudgetResult> GetSavingsDtoAsync(
BudgetPeriodType periodType,
DateTime? referenceDate = null,
IEnumerable<BudgetRecord>? existingBudgets = null)
{
var budgets = existingBudgets;
if (existingBudgets == null)
{
budgets = await budgetRepository.GetAllAsync();
}
if (budgets == null)
{
throw new InvalidOperationException("No budgets found.");
}
budgets = budgets
// 排序顺序 1.硬性预算 2.月度->年度 3.实际金额倒叙
.OrderBy(b => b.IsMandatoryExpense)
.ThenBy(b => b.Type)
.ThenByDescending(b => b.Limit);
var year = referenceDate?.Year ?? dateTimeProvider.Now.Year;
var month = referenceDate?.Month ?? dateTimeProvider.Now.Month;
if (periodType == BudgetPeriodType.Month)
{
return await GetForMonthAsync(budgets, year, month);
}
else if (periodType == BudgetPeriodType.Year)
{
return await GetForYearAsync(budgets, year);
}
throw new NotSupportedException($"Period type {periodType} is not supported.");
}
private async Task<BudgetResult> GetForMonthAsync(
IEnumerable<BudgetRecord> budgets,
int year,
int month)
{
var transactionClassify = await transactionStatisticsService.GetAmountGroupByClassifyAsync(
new DateTime(year, month, 1),
new DateTime(year, month, 1).AddMonths(1)
);
var monthlyIncomeItems = new List<(string name, decimal limit, decimal current, bool isMandatory)>();
var monthlyExpenseItems = new List<(string name, decimal limit, decimal current, bool isMandatory)>();
var monthlyBudgets = budgets
.Where(b => b.Type == BudgetPeriodType.Month);
foreach (var budget in monthlyBudgets)
{
var classifyList = budget.SelectedCategories.Split(',', StringSplitOptions.RemoveEmptyEntries);
decimal currentAmount = 0;
var transactionType = budget.Category switch
{
BudgetCategory.Income => TransactionType.Income,
BudgetCategory.Expense => TransactionType.Expense,
_ => throw new NotSupportedException($"Budget category {budget.Category} is not supported.")
};
foreach (var classify in classifyList)
{
// 获取分类+收入支出类型一致的金额
if (transactionClassify.TryGetValue((classify, transactionType), out var amount))
{
currentAmount += amount;
}
}
// 硬性预算 如果实际发生金额小于 应(总天数/实际天数)发生金额
// 直接取应发生金额(为了预算的准确性)
if (budget.IsMandatoryExpense && currentAmount == 0)
{
currentAmount = budget.Limit / DateTime.DaysInMonth(year, month) * dateTimeProvider.Now.Day;
}
if (budget.Category == BudgetCategory.Income)
{
monthlyIncomeItems.Add((
name: budget.Name,
limit: budget.Limit,
current: currentAmount,
isMandatory: budget.IsMandatoryExpense
));
}
else if (budget.Category == BudgetCategory.Expense)
{
monthlyExpenseItems.Add((
name: budget.Name,
limit: budget.Limit,
current: currentAmount,
isMandatory: budget.IsMandatoryExpense
));
}
}
var yearlyIncomeItems = new List<(string name, decimal limit, decimal current)>();
var yearlyExpenseItems = new List<(string name, decimal limit, decimal current)>();
var yearlyBudgets = budgets
.Where(b => b.Type == BudgetPeriodType.Year);
// 只需要考虑实际发生在本月的年度预算 因为他会影响到月度的结余情况
foreach (var budget in yearlyBudgets)
{
var classifyList = budget.SelectedCategories.Split(',', StringSplitOptions.RemoveEmptyEntries);
decimal currentAmount = 0;
var transactionType = budget.Category switch
{
BudgetCategory.Income => TransactionType.Income,
BudgetCategory.Expense => TransactionType.Expense,
_ => throw new NotSupportedException($"Budget category {budget.Category} is not supported.")
};
foreach (var classify in classifyList)
{
// 获取分类+收入支出类型一致的金额
if (transactionClassify.TryGetValue((classify, transactionType), out var amount))
{
currentAmount += amount;
}
}
if (currentAmount == 0)
{
continue;
}
if (budget.Category == BudgetCategory.Income)
{
yearlyIncomeItems.Add((
name: budget.Name,
limit: budget.Limit,
current: currentAmount
));
}
else if (budget.Category == BudgetCategory.Expense)
{
yearlyExpenseItems.Add((
name: budget.Name,
limit: budget.Limit,
current: currentAmount
));
}
}
var description = new StringBuilder();
#region
description.AppendLine("<h3>月度预算收入明细</h3>");
description.AppendLine("""
<table>
<thead>
<tr>
<th></th>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
""");
foreach (var item in monthlyIncomeItems)
{
description.AppendLine($"""
<tr>
<td>{item.name}</td>
<td>{item.limit:N0}</td>
<td>{(item.isMandatory ? "" : "")}</td>
</tr>
""");
}
description.AppendLine("</tbody></table>");
description.AppendLine($"""
<p>
收入合计:
<span class='income-value'>
<strong>{monthlyIncomeItems.Sum(item => item.limit):N0}</strong>
</span>
</p>
""");
description.AppendLine("<h3>月度预算支出明细</h3>");
description.AppendLine("""
<table>
<thead>
<tr>
<th></th>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
""");
foreach (var item in monthlyExpenseItems)
{
description.AppendLine($"""
<tr>
<td>{item.name}</td>
<td>{item.limit:N0}</td>
<td>{(item.isMandatory ? "" : "")}</td>
</tr>
""");
}
description.AppendLine("</tbody></table>");
description.AppendLine($"""
<p>
支出合计:
<span class='expense-value'>
<strong>{monthlyExpenseItems.Sum(item => item.limit):N0}</strong>
</span>
</p>
""");
#endregion
#region
if (yearlyIncomeItems.Any())
{
description.AppendLine("<h3>年度收入预算(发生在本月)</h3>");
description.AppendLine("""
<table>
<thead>
<tr>
<th></th>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
""");
foreach (var item in yearlyIncomeItems)
{
description.AppendLine($"""
<tr>
<td>{item.name}</td>
<td>{(item.limit == 0 ? "" : item.limit.ToString("N0"))}</td>
<td><span class='income-value'>{item.current:N0}</span></td>
</tr>
""");
}
description.AppendLine("</tbody></table>");
description.AppendLine($"""
<p>
收入合计:
<span class='income-value'>
<strong>{yearlyIncomeItems.Sum(item => item.current):N0}</strong>
</span>
</p>
""");
}
if (yearlyExpenseItems.Any())
{
description.AppendLine("<h3>年度支出预算(发生在本月)</h3>");
description.AppendLine("""
<table>
<thead>
<tr>
<th></th>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
""");
foreach (var item in yearlyExpenseItems)
{
description.AppendLine($"""
<tr>
<td>{item.name}</td>
<td>{(item.limit == 0 ? "" : item.limit.ToString("N0"))}</td>
<td><span class='expense-value'>{item.current:N0}</span></td>
</tr>
""");
}
description.AppendLine("</tbody></table>");
description.AppendLine($"""
<p>
支出合计:
<span class='expense-value'>
<strong>{yearlyExpenseItems.Sum(item => item.current):N0}</strong>
</span>
</p>
""");
}
#endregion
#region
description.AppendLine("<h3>存款计划结论</h3>");
var plannedIncome = monthlyIncomeItems.Sum(item => item.limit == 0 ? item.current : item.limit) + yearlyIncomeItems.Sum(item => item.current);
var plannedExpense = monthlyExpenseItems.Sum(item => item.limit == 0 ? item.current : item.limit) + yearlyExpenseItems.Sum(item => item.current);
var expectedSavings = plannedIncome - plannedExpense;
description.AppendLine($"""
<p>
计划存款:
<span class='income-value'>
<strong>{expectedSavings:N0}</strong>
</span>
=
</p>
<p>
&nbsp;&nbsp;&nbsp;&nbsp;
计划收入:
<span class='income-value'>
<strong>{monthlyIncomeItems.Sum(item => item.limit):N0}</strong>
</span>
</p>
""");
if (yearlyIncomeItems.Count > 0)
{
description.AppendLine($"""
<p>
&nbsp;&nbsp;&nbsp;&nbsp;
+ 本月发生的年度预算收入:
<span class='income-value'>
<strong>{yearlyIncomeItems.Sum(item => item.current):N0}</strong>
</span>
</p>
""");
}
description.AppendLine($"""
<p>
&nbsp;&nbsp;&nbsp;&nbsp;
- 计划支出:
<span class='expense-value'>
<strong>{monthlyExpenseItems.Sum(item => item.limit):N0}</strong>
</span>
""");
if (yearlyExpenseItems.Count > 0)
{
description.AppendLine($"""
<p>
&nbsp;&nbsp;&nbsp;&nbsp;
- 本月发生的年度预算支出:
<span class='expense-value'>
<strong>{yearlyExpenseItems.Sum(item => item.current):N0}</strong>
</span>
</p>
""");
}
description.AppendLine($"""
</p>
""");
#endregion
var savingsCategories = await configService.GetConfigByKeyAsync<string>("SavingsCategories") ?? string.Empty;
var currentActual = 0m;
if (!string.IsNullOrEmpty(savingsCategories))
{
var cats = new HashSet<string>(savingsCategories.Split(',', StringSplitOptions.RemoveEmptyEntries));
foreach(var kvp in transactionClassify)
{
if (cats.Contains(kvp.Key.Item1))
{
currentActual += kvp.Value;
}
}
}
var record = new BudgetRecord
{
Id = -2,
Name = "月度存款计划",
Type = BudgetPeriodType.Month,
Limit = expectedSavings,
Category = BudgetCategory.Savings,
SelectedCategories = savingsCategories,
StartDate = new DateTime(year, month, 1),
NoLimit = false,
IsMandatoryExpense = false,
CreateTime = dateTimeProvider.Now,
UpdateTime = dateTimeProvider.Now
};
return BudgetResult.FromEntity(
record,
currentActual,
new DateTime(year, month, 1),
description.ToString()
);
}
private async Task<BudgetResult> GetForYearAsync(
IEnumerable<BudgetRecord> budgets,
int year)
{
// 因为非当前月份的读取归档数据,这边依然是读取当前月份的数据
var currentMonth = dateTimeProvider.Now.Month;
var transactionClassify = await transactionStatisticsService.GetAmountGroupByClassifyAsync(
new DateTime(year, currentMonth, 1),
new DateTime(year, currentMonth, 1).AddMonths(1)
);
var currentMonthlyIncomeItems = new List<(long id, string name, decimal limit, int factor, decimal current, bool isMandatory)>();
var currentYearlyIncomeItems = new List<(long id, string name, decimal limit, int factor, decimal current, bool isMandatory)>();
var currentMonthlyExpenseItems = new List<(long id, string name, decimal limit, int factor, decimal current, bool isMandatory)>();
var currentYearlyExpenseItems = new List<(long id, string name, decimal limit, int factor, decimal current, bool isMandatory)>();
// 归档的预算收入支出明细
var archiveIncomeItems = new List<(long id, string name, int[] months, decimal limit, decimal current)>();
var archiveExpenseItems = new List<(long id, string name, int[] months, decimal limit, decimal current)>();
// 获取归档数据
var archives = await budgetArchiveRepository.GetArchivesByYearAsync(year);
var archiveBudgetGroups = archives
.SelectMany(a => a.Content.Select(x => (a.Month, Archive: x)))
.Where(b => b.Archive.Type == BudgetPeriodType.Month) // 因为本来就是当前年度预算的生成 ,归档无需关心年度, 以最新地为准即可
.GroupBy(b => (b.Archive.Id, b.Archive.Limit));
foreach (var archiveBudgetGroup in archiveBudgetGroups)
{
var (_, archive) = archiveBudgetGroup.First();
var archiveItems = archive.Category switch
{
BudgetCategory.Income => archiveIncomeItems,
BudgetCategory.Expense => archiveExpenseItems,
_ => throw new NotSupportedException($"Category {archive.Category} is not supported.")
};
archiveItems.Add((
id: archiveBudgetGroup.Key.Id,
name: archive.Name,
months: archiveBudgetGroup.Select(x => x.Month).OrderBy(m => m).ToArray(),
limit: archiveBudgetGroup.Key.Limit,
current: archiveBudgetGroup.Sum(x => x.Archive.Actual)
));
}
// 处理当月最新地没有归档的预算
foreach (var budget in budgets)
{
var currentAmount = 0m;
var classifyList = budget.SelectedCategories.Split(',', StringSplitOptions.RemoveEmptyEntries);
var transactionType = budget.Category switch
{
BudgetCategory.Income => TransactionType.Income,
BudgetCategory.Expense => TransactionType.Expense,
_ => throw new NotSupportedException($"Budget category {budget.Category} is not supported.")
};
foreach (var classify in classifyList)
{
// 获取分类+收入支出类型一致的金额
if (transactionClassify.TryGetValue((classify, transactionType), out var amount))
{
currentAmount += amount;
}
}
// 硬性预算 如果实际发生金额小于 应(总天数/实际天数)发生金额
// 直接取应发生金额(为了预算的准确性)
if (budget.IsMandatoryExpense && currentAmount == 0)
{
currentAmount = budget.IsMandatoryExpense && currentAmount == 0
? budget.Limit / (DateTime.IsLeapYear(year) ? 366 : 365) * dateTimeProvider.Now.DayOfYear
: budget.Limit / DateTime.DaysInMonth(year, currentMonth) * dateTimeProvider.Now.Day;
}
AddOrIncCurrentItem(
budget.Id,
budget.Type,
budget.Category,
budget.Name,
budget.Limit,
budget.Type == BudgetPeriodType.Year
? 1
: 12 - currentMonth + 1,
currentAmount,
budget.IsMandatoryExpense
);
}
var description = new StringBuilder();
#region
var archiveIncomeDiff = 0m;
if (archiveIncomeItems.Any())
{
description.AppendLine("<h3>已归档收入明细</h3>");
description.AppendLine("""
<table>
<thead>
<tr>
<th></th>
<th></th>
<th></th>
<th></th>
<th></th>
</tr>
</thead>
</tbody>
""");
// 已归档的收入
foreach (var (_, name, months, limit, current) in archiveIncomeItems)
{
description.AppendLine($"""
<tr>
<td>{name}</td>
<td>{(limit == 0 ? "" : limit.ToString("N0"))}</td>
<td>{FormatMonths(months)}</td>
<td>{limit * months.Length:N0}</td>
<td><span class='income-value'>{current:N0}</span></td>
</tr>
""");
}
description.AppendLine("</tbody></table>");
archiveIncomeDiff = archiveIncomeItems.Sum(i => i.current) - archiveIncomeItems.Sum(i => i.limit * i.months.Length);
description.AppendLine($"""
<p>
<span class="highlight">已归档收入总结: </span>
{(archiveIncomeDiff > 0 ? "超额收入" : "未达预期")}:
<span class='{(archiveIncomeDiff > 0 ? "income-value" : "expense-value")}'>
<strong>{archiveIncomeDiff:N0}</strong>
</span>
=
<span class='income-value'>
<strong>{archiveIncomeItems.Sum(i => i.limit * i.months.Length):N0}</strong>
</span>
-
:
<span class='income-value'>
<strong>{archiveIncomeItems.Sum(i => i.current):N0}</strong>
</span>
</p>
""");
}
#endregion
#region
description.AppendLine("<h3>预算收入明细</h3>");
description.AppendLine("""
<table>
<thead>
<tr>
<th></th>
<th></th>
<th>/</th>
<th></th>
</tr>
</thead>
<tbody>
""");
// 当前预算
foreach (var (_, name, limit, factor, _, _) in currentMonthlyIncomeItems)
{
description.AppendLine($"""
<tr>
<td>{name}</td>
<td>{(limit == 0 ? "" : limit.ToString("N0"))}</td>
<td>{FormatMonthsByFactor(factor)}</td>
<td>{(limit == 0 ? "不限额" : (limit * factor).ToString("N0"))}</td>
</tr>
""");
}
// 年预算
foreach (var (_, name, limit, _, _, _) in currentYearlyIncomeItems)
{
description.AppendLine($"""
<tr>
<td>{name}</td>
<td>{(limit == 0 ? "" : limit.ToString("N0"))}</td>
<td>{year}</td>
<td>{(limit == 0 ? "不限额" : limit.ToString("N0"))}</td>
</tr>
""");
}
description.AppendLine("</tbody></table>");
description.AppendLine($"""
<p>
预算收入合计:
<span class='expense-value'>
<strong>
{
currentMonthlyIncomeItems.Sum(i => i.limit * i.factor)
+ currentYearlyIncomeItems.Sum(i => i.limit)
:N0}
</strong>
</span>
</p>
""");
#endregion
#region
var archiveExpenseDiff = 0m;
if (archiveExpenseItems.Any())
{
description.AppendLine("<h3>已归档支出明细</h3>");
description.AppendLine("""
<table>
<thead>
<tr>
<th></th>
<th></th>
<th></th>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
""");
// 已归档的支出
foreach (var (_, name, months, limit, current) in archiveExpenseItems)
{
description.AppendLine($"""
<tr>
<td>{name}</td>
<td>{(limit == 0 ? "" : limit.ToString("N0"))}</td>
<td>{FormatMonths(months)}</td>
<td>{limit * months.Length:N0}</td>
<td><span class='expense-value'>{current:N0}</span></td>
</tr>
""");
}
description.AppendLine("</tbody></table>");
archiveExpenseDiff = archiveExpenseItems.Sum(i => i.limit * i.months.Length) - archiveExpenseItems.Sum(i => i.current);
description.AppendLine($"""
<p>
<span class="highlight">已归档支出总结: </span>
{(archiveExpenseDiff > 0 ? "节省支出" : "超支")}:
<span class='{(archiveExpenseDiff > 0 ? "income-value" : "expense-value")}'>
<strong>{archiveExpenseDiff:N0}</strong>
</span>
=
<span class='expense-value'>
<strong>{archiveExpenseItems.Sum(i => i.limit * i.months.Length):N0}</strong>
</span>
- :
<span class='expense-value'>
<strong>{archiveExpenseItems.Sum(i => i.current):N0}</strong>
</span>
</p>
""");
}
#endregion
#region
description.AppendLine("<h3>预算支出明细</h3>");
description.AppendLine("""
<table>
<thead>
<tr>
<th></th>
<th></th>
<th>/</th>
<th></th>
</tr>
</thead>
<tbody>
""");
// 未来月预算
foreach (var (_, name, limit, factor, _, _) in currentMonthlyExpenseItems)
{
description.AppendLine($"""
<tr>
<td>{name}</td>
<td>{(limit == 0 ? "" : limit.ToString("N0"))}</td>
<td>{FormatMonthsByFactor(factor)}</td>
<td>{(limit == 0 ? "不限额" : (limit * factor).ToString("N0"))}</td>
</tr>
""");
}
// 年预算
foreach (var (_, name, limit, _, _, _) in currentYearlyExpenseItems)
{
description.AppendLine($"""
<tr>
<td>{name}</td>
<td>{(limit == 0 ? "" : limit.ToString("N0"))}</td>
<td>{year}</td>
<td>{(limit == 0 ? "不限额" : limit.ToString("N0"))}</td>
</tr>
""");
}
description.AppendLine("</tbody></table>");
// 合计
description.AppendLine($"""
<p>
支出预算合计:
<span class='expense-value'>
<strong>
{
currentMonthlyExpenseItems.Sum(i => i.limit * i.factor)
+ currentYearlyExpenseItems.Sum(i => i.limit)
:N0}
</strong>
</span>
</p>
""");
#endregion
#region
var archiveIncomeBudget = archiveIncomeItems.Sum(i => i.limit * i.months.Length);
var archiveExpenseBudget = archiveExpenseItems.Sum(i => i.limit * i.months.Length);
var archiveSavings = archiveIncomeBudget - archiveExpenseBudget + archiveIncomeDiff + archiveExpenseDiff;
var expectedIncome = currentMonthlyIncomeItems.Sum(i => i.limit == 0 ? i.current : i.limit * i.factor) + currentYearlyIncomeItems.Sum(i => i.isMandatory || i.limit == 0 ? i.current : i.limit);
var expectedExpense = currentMonthlyExpenseItems.Sum(i => i.limit == 0 ? i.current : i.limit * i.factor) + currentYearlyExpenseItems.Sum(i => i.isMandatory || i.limit == 0 ? i.current : i.limit);
var expectedSavings = expectedIncome - expectedExpense;
description.AppendLine("<h3>存款计划结论</h3>");
description.AppendLine($"""
<p>
<strong>归档存款:</strong>
<span class='income-value'><strong>{archiveSavings:N0}</strong></span>
=
归档收入: <span class='income-value'>{archiveIncomeBudget:N0}</span>
-
归档支出: <span class='expense-value'>{archiveExpenseBudget:N0}</span>
{(archiveIncomeDiff >= 0 ? " + " : " - ")}: <span class='{(archiveIncomeDiff >= 0 ? "income-value" : "expense-value")}'>{(archiveIncomeDiff >= 0 ? archiveIncomeDiff : -archiveIncomeDiff):N0}</span>
{(archiveExpenseDiff >= 0 ? " + 节省支出" : " - 超额支出")}: <span class='{(archiveExpenseDiff >= 0 ? "income-value" : "expense-value")}'>{(archiveExpenseDiff >= 0 ? archiveExpenseDiff : -archiveExpenseDiff):N0}</span>
</p>
<p>
<strong></strong>
<span class='income-value'><strong>{expectedSavings:N0}</strong></span>
=
: <span class='income-value'>{expectedIncome:N0}</span>
-
: <span class='expense-value'>{expectedExpense:N0}</span>
</p>
<p>
<strong></strong>
<span class='{(archiveSavings + expectedSavings > 0 ? "income-value" : "expense-value")}'>
<strong>{archiveSavings + expectedSavings:N0}</strong>
</span>
=
:
<span class='income-value'>{expectedSavings:N0}</span>
{(archiveSavings > 0 ? "+" : "-")}
:
<span class='{(archiveSavings > 0 ? "income-value" : "expense-value")}'>{Math.Abs(archiveSavings):N0}</span>
</p>
""");
#endregion
var savingsCategories = await configService.GetConfigByKeyAsync<string>("SavingsCategories") ?? string.Empty;
var currentActual = 0m;
if (!string.IsNullOrEmpty(savingsCategories))
{
var cats = new HashSet<string>(savingsCategories.Split(',', StringSplitOptions.RemoveEmptyEntries));
foreach(var kvp in transactionClassify)
{
if (cats.Contains(kvp.Key.Item1))
{
currentActual += kvp.Value;
}
}
}
var record = new BudgetRecord
{
Id = -1,
Name = "年度存款计划",
Type = BudgetPeriodType.Year,
Limit = archiveSavings + expectedSavings,
Category = BudgetCategory.Savings,
SelectedCategories = savingsCategories,
StartDate = new DateTime(year, 1, 1),
NoLimit = false,
IsMandatoryExpense = false,
CreateTime = dateTimeProvider.Now,
UpdateTime = dateTimeProvider.Now
};
return BudgetResult.FromEntity(
record,
currentActual,
new DateTime(year, 1, 1),
description.ToString()
);
void AddOrIncCurrentItem(
long id,
BudgetPeriodType periodType,
BudgetCategory category,
string name,
decimal limit,
int factor,
decimal incAmount,
bool isMandatory)
{
var current = (periodType, category) switch
{
(BudgetPeriodType.Month, BudgetCategory.Income) => currentMonthlyIncomeItems,
(BudgetPeriodType.Month, BudgetCategory.Expense) => currentMonthlyExpenseItems,
(BudgetPeriodType.Year, BudgetCategory.Income) => currentYearlyIncomeItems,
(BudgetPeriodType.Year, BudgetCategory.Expense) => currentYearlyExpenseItems,
_ => throw new NotSupportedException($"Category {category} is not supported.")
};
if (current.Any(i => i.id == id))
{
var existing = current.First(i => i.id == id);
current.Remove(existing);
current.Add((id, existing.name, existing.limit, existing.factor + factor, existing.current + incAmount, isMandatory));
}
else
{
current.Add((id, name, limit, factor, incAmount, isMandatory));
}
}
string FormatMonthsByFactor(int factor)
{
var months = factor == 12
? Enumerable.Range(1, 12).ToArray()
: Enumerable.Range(dateTimeProvider.Now.Month, factor).ToArray();
return FormatMonths(months.ToArray());
}
string FormatMonths(int[] months)
{
// 如果是连续的月份 则简化显示 1~3
Array.Sort(months);
if (months.Length >= 2)
{
var isContinuous = true;
for (var i = 1; i < months.Length; i++)
{
if (months[i] != months[i - 1] + 1)
{
isContinuous = false;
break;
}
}
if (isContinuous)
{
return $"{months.First()}~{months.Last()}月";
}
}
return string.Join(", ", months) + "月";
}
}
}