namespace Application.Dto;

/// <summary>
/// 预算响应
/// </summary>
public record BudgetResponse
{
    public long Id { get; init; }
    public string Name { get; init; } = string.Empty;
    public BudgetPeriodType Type { get; init; }
    public decimal Limit { get; init; }
    public decimal Current { get; init; }
    public BudgetCategory Category { get; init; }
    public string[] SelectedCategories { get; init; } = [];
    public DateTime StartDate { get; init; }
    public bool NoLimit { get; init; }
    public bool IsMandatoryExpense { get; init; }
    public decimal UsagePercentage { get; init; }
    
    /// <summary>
    /// 存款明细数据（仅存款预算返回）
    /// </summary>
    public SavingsDetailDto? Details { get; init; }
}

/// <summary>
/// 存款明细数据 DTO
/// </summary>
public record SavingsDetailDto
{
    public List<BudgetDetailItemDto> IncomeItems { get; init; } = new();
    public List<BudgetDetailItemDto> ExpenseItems { get; init; } = new();
    public SavingsCalculationSummaryDto Summary { get; init; } = new();
}

/// <summary>
/// 预算明细项 DTO
/// </summary>
public record BudgetDetailItemDto
{
    public long Id { get; init; }
    public string Name { get; init; } = string.Empty;
    public BudgetPeriodType Type { get; init; }
    public decimal BudgetLimit { get; init; }
    public decimal ActualAmount { get; init; }
    public decimal EffectiveAmount { get; init; }
    public string CalculationNote { get; init; } = string.Empty;
    public bool IsOverBudget { get; init; }
    public bool IsArchived { get; init; }
    public int[]? ArchivedMonths { get; init; }
}

/// <summary>
/// 存款计算汇总 DTO
/// </summary>
public record SavingsCalculationSummaryDto
{
    public decimal TotalIncomeBudget { get; init; }
    public decimal TotalExpenseBudget { get; init; }
    public decimal PlannedSavings { get; init; }
    public string CalculationFormula { get; init; } = string.Empty;
}


/// <summary>
/// 创建预算请求
/// </summary>
public record CreateBudgetRequest
{
    public string Name { get; init; } = string.Empty;
    public BudgetPeriodType Type { get; init; } = BudgetPeriodType.Month;
    public decimal Limit { get; init; }
    public BudgetCategory Category { get; init; }
    public string[] SelectedCategories { get; init; } = [];
    public DateTime? StartDate { get; init; }
    public bool NoLimit { get; init; }
    public bool IsMandatoryExpense { get; init; }
}

/// <summary>
/// 更新预算请求
/// </summary>
public record UpdateBudgetRequest
{
    public long Id { get; init; }
    public string Name { get; init; } = string.Empty;
    public BudgetPeriodType Type { get; init; } = BudgetPeriodType.Month;
    public decimal Limit { get; init; }
    public BudgetCategory Category { get; init; }
    public string[] SelectedCategories { get; init; } = [];
    public DateTime? StartDate { get; init; }
    public bool NoLimit { get; init; }
    public bool IsMandatoryExpense { get; init; }
}

/// <summary>
/// 分类统计响应
/// </summary>
public record BudgetCategoryStatsResponse
{
    public BudgetStatsDetail Month { get; init; } = new();
    public BudgetStatsDetail Year { get; init; } = new();
}

/// <summary>
/// 统计详情
/// </summary>
public record BudgetStatsDetail
{
    public decimal Limit { get; init; }
    public decimal Current { get; init; }
    public decimal Remaining { get; init; }
    public decimal UsagePercentage { get; init; }
    public List<decimal?> Trend { get; init; } = [];
    public string Description { get; init; } = string.Empty;
}

/// <summary>
/// 未覆盖分类响应
/// </summary>
public record UncoveredCategoryResponse
{
    public string Category { get; init; } = string.Empty;
    public decimal Amount { get; init; }
    public int Count { get; init; }
}

/// <summary>
/// 更新归档总结请求
/// </summary>
public record UpdateArchiveSummaryRequest
{
    public DateTime ReferenceDate { get; init; }
    public string? Summary { get; init; }
}

/// <summary>
/// 存款明细数据
/// </summary>
public record SavingsDetail
{
    public List<BudgetDetailItem> IncomeItems { get; init; } = new();
    public List<BudgetDetailItem> ExpenseItems { get; init; } = new();
    public SavingsCalculationSummary Summary { get; init; } = new();
}

/// <summary>
/// 预算明细项
/// </summary>
public record BudgetDetailItem
{
    public long Id { get; init; }
    public string Name { get; init; } = string.Empty;
    public BudgetPeriodType Type { get; init; }
    public decimal BudgetLimit { get; init; }
    public decimal ActualAmount { get; init; }
    public decimal EffectiveAmount { get; init; }
    public string CalculationNote { get; init; } = string.Empty;
    public bool IsOverBudget { get; init; }
    public bool IsArchived { get; init; }
    public int[]? ArchivedMonths { get; init; }
}

/// <summary>
/// 存款计算汇总
/// </summary>
public record SavingsCalculationSummary
{
    public decimal TotalIncomeBudget { get; init; }
    public decimal TotalExpenseBudget { get; init; }
    public decimal PlannedSavings { get; init; }
    public string CalculationFormula { get; init; } = string.Empty;
}