using AccountsBLL.AccountReports.AccountOutstanding;
using AccountsDAL.DTO.Reports;
using FastEndpoints;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.DTO.Framework.ResponseStandard;
using GB5Shared.DTO.Report;
using GB5Shared.FastEndPoint;
using static GB5Shared.GB5Constant.Constant;

namespace AccountsSL.EndPoints.AccountReports
{
    // Wired to the existing legacy MREPORT row REPORTID = -1399995571 ("Outstanding Detail") — already
    // has 33 MREPORTVIEW rows live (Account/AccountGroup/InCharge/PriceCategory/Route/OU groupings,
    // Receivable/Payable splits, etc.), confirmed via sqlcmd before this endpoint was written. New
    // GB5-backed views are added as siblings under the same REPORTID, not a new REPORT row.
    public class AccountOutstandingDetailReport : BaseReportEndpoint<AccountOutstandingDetailReport.AccountOutstandingDetailReportParameter, OutstandingDetailReportDTO>
    {
        private readonly IAccountOutstandingReportBLL _bll;

        public AccountOutstandingDetailReport(IAccountOutstandingReportBLL bll)
        {
            _bll = bll;
        }

        public override void Configure()
        {
            Post("/AccountReports/AccountOutstandingDetailReport");
            AllowAnonymous();
        }

        public record AccountOutstandingDetailReportParameter(
            [property: FromHeader] string Login,
            [property: FromBody] ReportCallingDTO ReportCallingDTO,
            [property: QueryParam] int FirstNumber,
            [property: QueryParam] int MaxResult
        );

        protected override async IAsyncEnumerable<OutstandingDetailReportDTO> ExecuteReportAsync(
            AccountOutstandingDetailReportParameter req, LoginDTO login,
            [System.Runtime.CompilerServices.EnumeratorCancellation] CancellationToken ct)
        {
            // No dedicated streaming DAL path yet for Outstanding (unlike AccountLedger) — export reuses
            // the same paged query at a high cap. Outstanding result sets are bounded by distinct
            // pending bills, not raw transaction volume, so this is acceptable for phase 1.
            var result = await _bll.GetOutstandingDetailReport(
                1, int.MaxValue, req.ReportCallingDTO.CriteriaDTO,
                sortBy: null, req.ReportCallingDTO.MenuId, login).ConfigureAwait(false);
            foreach (var row in result.Items)
            {
                ct.ThrowIfCancellationRequested();
                yield return row;
            }
        }

        protected override async Task<ResponseStandardDTO<object>> ExecutePagedAsync(
            AccountOutstandingDetailReportParameter req, LoginDTO login, CancellationToken ct)
        {
            try
            {
                var result = await _bll.GetOutstandingDetailReport(
                    req.FirstNumber, req.MaxResult, req.ReportCallingDTO.CriteriaDTO,
                    sortBy: null, req.ReportCallingDTO.MenuId, login).ConfigureAwait(false);
                return await GB5Shared.ResponseStandard.Response.CreateSuccessResponse(
                    result, CacheKeyLevel.NOT_REQUIRED, login).ConfigureAwait(false);
            }
            catch (Exception ex)
            {
                return await GB5Shared.ResponseStandard.Response.CreateExceptionError<string>(
                    ex, CacheKeyLevel.NOT_REQUIRED, login, ex.Message, 500).ConfigureAwait(false);
            }
        }
    }
}