namespace ComplianceDAL.DTO.GSTReturn;

public class CompliancePeriodDTO
{
    public int PeriodId { get; set; }
    public string Framework { get; set; } = "GST_INDIA";
    public string GSTIN { get; set; } = string.Empty;
    public string ReturnType { get; set; } = string.Empty;
    public int PeriodYear { get; set; }
    public int PeriodMonth { get; set; }
    public string Status { get; set; } = "NotStarted";
    public DateTime? SubmittedOn { get; set; }
    public string AckNumber { get; set; } = string.Empty;
    public DateTime? FiledOn { get; set; }
    public string ConfirmationNumber { get; set; } = string.Empty;
    public int ClientId { get; set; }
    public string DatabaseName { get; set; } = string.Empty;
    public int? ModifiedById { get; set; }
    public DateTime? ModifiedOn { get; set; }
}

public class GetReturnStatusRequestDTO
{
    public string GSTIN { get; set; } = string.Empty;
    public string ReturnPeriod { get; set; } = string.Empty;  // MMYYYY
    public string ReturnType { get; set; } = "GSTR1";
    public string Framework { get; set; } = "GST_INDIA";
}

public class ReturnStatusListFilterDTO
{
    public string Framework { get; set; } = "GST_INDIA";
    public string GSTIN { get; set; } = string.Empty;
    public string ReturnType { get; set; } = string.Empty;
    public int PeriodYear { get; set; }
}

public class SyncReturnStatusRequestDTO
{
    public string GSTIN { get; set; } = string.Empty;
    public string ReturnPeriod { get; set; } = string.Empty;  // MMYYYY
    public string ReturnType { get; set; } = "GSTR1";
}

// GSTR-3B DTOs
public class GSTR3BDTO
{
    public string GSTIN { get; set; } = string.Empty;
    public string ReturnPeriod { get; set; } = string.Empty;
    public GSTR3BSection31DTO Section31 { get; set; } = new();
    public GSTR3BSummaryDTO Summary { get; set; } = new();
}

public class GSTR3BSection31DTO
{
    // 3.1(a) Outward taxable supplies (other than zero rated, nil and exempted)
    public decimal TaxableValueA { get; set; }
    public decimal IGSTAmountA { get; set; }
    public decimal CGSTAmountA { get; set; }
    public decimal SGSTAmountA { get; set; }
    public decimal CessAmountA { get; set; }

    // 3.1(b) Outward taxable supplies (zero rated)
    public decimal TaxableValueB { get; set; }
    public decimal IGSTAmountB { get; set; }
    public decimal CessAmountB { get; set; }

    // 3.1(c) Other outward supplies (Nil rated, exempted)
    public decimal TaxableValueC { get; set; }

    // 3.1(d) Inward supplies liable to reverse charge — populated in Phase 5
    public decimal TaxableValueD { get; set; }
    public decimal IGSTAmountD { get; set; }
    public decimal CGSTAmountD { get; set; }
    public decimal SGSTAmountD { get; set; }
    public decimal CessAmountD { get; set; }

    // Credit note adjustments
    public decimal CDNRIGSTAmount { get; set; }
    public decimal CDNRCGSTAmount { get; set; }
    public decimal CDNRSGSTAmount { get; set; }
}

public class GSTR3BSummaryDTO
{
    public decimal NetIGST { get; set; }
    public decimal NetCGST { get; set; }
    public decimal NetSGST { get; set; }
    public decimal NetCess { get; set; }
    public decimal TotalTaxLiability { get; set; }
}

public class SubmitGSTR3BRequestDTO
{
    public string GSTIN { get; set; } = string.Empty;
    public string ReturnPeriod { get; set; } = string.Empty;
    public string EVCOtp { get; set; } = string.Empty;
}

// Raw row for computing GSTR-3B section 3.1 from DB — public for DAL/BLL access
public class GSTR3BOutwardRawDTO
{
    public decimal TaxableValueA { get; set; }
    public decimal IGSTAmountA { get; set; }
    public decimal CGSTAmountA { get; set; }
    public decimal SGSTAmountA { get; set; }
    public decimal CessAmountA { get; set; }
    public decimal TaxableValueB { get; set; }
    public decimal IGSTAmountB { get; set; }
    public decimal CessAmountB { get; set; }
    public decimal TaxableValueC { get; set; }
    public decimal CDNRIGSTAmount { get; set; }
    public decimal CDNRCGSTAmount { get; set; }
    public decimal CDNRSGSTAmount { get; set; }
}