using AccountsBLL.AccountReports.AccountCashFlow;
using AccountsDAL.DTO.AccountsReports;
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
{
    // Indirect method — genuinely new, no legacy precedent (see CashFlowReportQB.cs class header for
    // the from-first-principles derivation). A single consolidated statement (Operating/Investing/
    // Financing sections, ~6 lines) for the requested period — no GroupType needed, unlike the Direct
    // method's Account/Group/Schedule breakdown.
    public class AccountCashFlowIndirectReport : BaseReportEndpoint<AccountCashFlowIndirectReport.AccountCashFlowIndirectReportParameter, CashFlowIndirectLineDTO>
    {
        private readonly IAccountCashFlowReportBLL _bll;

        public AccountCashFlowIndirectReport(IAccountCashFlowReportBLL bll)
        {
            _bll = bll;
        }

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

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

        protected override async IAsyncEnumerable<CashFlowIndirectLineDTO> ExecuteReportAsync(
            AccountCashFlowIndirectReportParameter req, LoginDTO login,
            [System.Runtime.CompilerServices.EnumeratorCancellation] CancellationToken ct)
        {
            var result = await _bll.GetCashFlowIndirectReport(
                req.ReportCallingDTO.CriteriaDTO, req.ReportCallingDTO.MenuId, login).ConfigureAwait(false);
            foreach (var row in result.Items)
            {
                ct.ThrowIfCancellationRequested();
                yield return row;
            }
        }

        protected override async Task<ResponseStandardDTO<object>> ExecutePagedAsync(
            AccountCashFlowIndirectReportParameter req, LoginDTO login, CancellationToken ct)
        {
            try
            {
                var result = await _bll.GetCashFlowIndirectReport(
                    req.ReportCallingDTO.CriteriaDTO, 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);
            }
        }
    }
}