using AccountsBLL.AccountReports.PAndLReport;
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
{
    // GB5-native replacement for the GB4 legacy gb4/as/AccountsReports.svc/PLHorizontal endpoint —
    // MREPORT -1399975830 "P and L Horizontal", live menus AC20091 (Schedule)/AC20092 (Group)/
    // AC20093 (Account), each passing its own GroupType (2/1/0 respectively). Same rows as
    // PAndLVerticalReport — see PAndLReportQB.cs class header — Horizontal only differs in how the
    // frontend renders them (Income|Expense side by side rather than stacked). Cut over via
    // MWEBSERVICE.SECONDURITEMPLATE, not by replacing the legacy URITEMPLATE — see the companion
    // migration.
    public class PAndLHorizontalReport : BaseReportEndpoint<PAndLHorizontalReport.PAndLHorizontalReportParameter, PAndLHorizontalReportDTO>
    {
        private readonly IPAndLReportBLL _bll;

        public PAndLHorizontalReport(IPAndLReportBLL bll)
        {
            _bll = bll;
        }

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

        public record PAndLHorizontalReportParameter(
            [property: FromHeader] string Login,
            [property: FromBody] ReportCallingDTO ReportCallingDTO,
            // String, not int — matches the {Type} substitution convention already configured live
            // on MMENU.URIPARAMETERVALUE for AC20091/92/93 ('ACCOUNTSCHEDULE'/'ACCOUNTGROUP'/
            // 'ACCOUNT'), same as PAndLVerticalReport's Type parameter.
            [property: QueryParam] string? Type,
            [property: QueryParam] int FirstNumber,
            [property: QueryParam] int MaxResult
        );

        private static int ToGroupType(string? type) => type?.ToUpperInvariant() switch
        {
            "ACCOUNTGROUP" => 1,
            "ACCOUNTSCHEDULE" => 2,
            _ => 0,
        };

        protected override async IAsyncEnumerable<PAndLHorizontalReportDTO> ExecuteReportAsync(
            PAndLHorizontalReportParameter req, LoginDTO login,
            [System.Runtime.CompilerServices.EnumeratorCancellation] CancellationToken ct)
        {
            var rows = await _bll.GetPAndLHorizontal(
                ToGroupType(req.Type), req.ReportCallingDTO.CriteriaDTO, req.ReportCallingDTO.MenuId, login).ConfigureAwait(false);
            foreach (var row in rows)
            {
                ct.ThrowIfCancellationRequested();
                yield return row;
            }
        }

        protected override async Task<ResponseStandardDTO<object>> ExecutePagedAsync(
            PAndLHorizontalReportParameter req, LoginDTO login, CancellationToken ct)
        {
            try
            {
                var rows = await _bll.GetPAndLHorizontal(
                    ToGroupType(req.Type), req.ReportCallingDTO.CriteriaDTO, req.ReportCallingDTO.MenuId, login).ConfigureAwait(false);
                return await GB5Shared.ResponseStandard.Response.CreateSuccessResponse(
                    rows, 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);
            }
        }
    }
}