using AccountsBLL.AccountReports.RatioAnalysis;
using AccountsBLL.AccountReports;
using AccountsDAL.DTO.AccountsReports;
using FastEndpoints;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.DTO.Report;
using GB5Shared.FastEndPoint;

namespace AccountsSL.EndPoints.AccountReports
{
    // Ratio Analysis Dashboard — reads from the already-posted FFINANCE fact table instead of live
    // TVOUCHER aggregation, the first report in this migration wave to do so (see the plan file's
    // "Ratio Analysis Dashboard" section). Wired under the EXISTING legacy REPORTID -1399896764
    // ("Ratio Analysis Dashboard") and its REPORTVIEWID -1399999760 ("Ratio Analysis View") — both
    // confirmed live via sqlcmd, never created fresh. Result set is small and bounded (~12 ratios x
    // their own element count) so the default ExecutePagedAsync (caps at 500 rows) is left
    // un-overridden, per BaseReportEndpoint's own guidance for reports too small to bother with
    // real SQL-level paging.
    public class AccountRatioAnalysisReport : BaseReportEndpoint<AccountRatioAnalysisReport.AccountRatioAnalysisReportParameter, RatioAnalysisDashBoardDTO>
    {
        private readonly IRatioAnalysisReportBLL _bll;

        public AccountRatioAnalysisReport(IRatioAnalysisReportBLL bll)
        {
            _bll = bll;
        }

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

        public record AccountRatioAnalysisReportParameter(
            [property: FromHeader] string Login,
            [property: FromBody] ReportCallingDTO ReportCallingDTO
        );

        protected override async IAsyncEnumerable<RatioAnalysisDashBoardDTO> ExecuteReportAsync(
            AccountRatioAnalysisReportParameter req, LoginDTO login,
            [System.Runtime.CompilerServices.EnumeratorCancellation] CancellationToken ct)
        {
            var criteria = AccountReportCriteriaParser.Parse(req.ReportCallingDTO.CriteriaDTO, login);
            var ouIds = criteria.OUIds is { Count: > 0 } ? criteria.OUIds : null;

            var rows = await _bll.GetRatioAnalysisDashboard(
                criteria.PeriodFromDate, criteria.PeriodToDate, ouIds, criteria.OUGroupId, login, ct).ConfigureAwait(false);
            foreach (var row in rows)
            {
                ct.ThrowIfCancellationRequested();
                yield return row;
            }
        }
    }
}