using General_Ledger_Service.DTOs.Reports;

namespace General_Ledger_Service.Services.CsvDocuments
{
    // Retrofit 2026-07-31 - Section column carries the classified section name (Non-Current
    // Assets, Current Assets, Equity, Non-Current/Current Liabilities, Unclassified) rather than
    // the old AccountType/depth-indentation pair (05_LKAS_Report_PDF_Templates.md Section 10).
    public static class BalanceSheetCsvDocument
    {
        public static byte[] Generate(BalanceSheetReportDto data)
        {
            var csv = new CsvBuilder();
            csv.AddRow("Section", "Account Code", "Account Name", "Balance");

            void WriteSection(string section, BalanceSheetSectionDto s)
            {
                foreach (var line in s.Lines)
                {
                    csv.AddRow(section, line.AccountCode, line.AccountName, line.Balance);
                }
            }

            WriteSection("Non-Current Assets", data.NonCurrentAssets);
            WriteSection("Current Assets", data.CurrentAssets);
            WriteSection("Unclassified Assets", data.UnclassifiedAssets);
            csv.AddRow("Asset", "", "TOTAL ASSETS", data.TotalAssets);

            WriteSection("Equity", data.Equity);
            WriteSection("Non-Current Liabilities", data.NonCurrentLiabilities);
            WriteSection("Current Liabilities", data.CurrentLiabilities);
            WriteSection("Unclassified Liabilities", data.UnclassifiedLiabilities);
            csv.AddRow("Liability/Equity", "", "TOTAL EQUITY AND LIABILITIES", data.TotalEquityAndLiabilities);

            return csv.Build();
        }
    }
}