using FastEndpoints;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.DTO.Framework.ResponseStandard;
using GB5Shared.DTO.Report;
using GB5Shared.FastEndPoint;
using MMBLL.MMReports;
using MMDAL.DTO.MMHead;
using static GB5Shared.GB5Constant.Constant;

namespace MMSL.EndPoints.MMReports
{
    // Procurement Overview Dashboard, Tile 3 -- "Purchase Order Monitoring". Wires up
    // PurchaseStatusReportDTO's PO->GRN->quality half only for Phase 1 -- payment/voucher tracing
    // (VoucherId/PJV/MR/MINS fields on that DTO) is intentionally left unpopulated pending live
    // schema confirmation of TVOUCHER/TBILLALLOCATION/TPAYMENT. See GET_PO_MONITORING_DETAIL in
    // MMReportsQB.cs for the exact scope.
    public class GetPOMonitoringDashboard
        : BaseReportEndpoint<GetPOMonitoringDashboard.GetPOMonitoringDashboardParameter, PurchaseStatusReportDTO>
    {
        private readonly IMMReportsBLL _bll;

        public GetPOMonitoringDashboard(IMMReportsBLL bll)
        {
            _bll = bll;
        }

        public override void Configure()
        {
            Post("/MMReports/GetPOMonitoringDashboard");
            AllowAnonymous();
        }

        public record GetPOMonitoringDashboardParameter(
            [property: FromHeader] string Login,
            [property: FromBody] ReportCallingDTO ReportCallingDTO,
            [property: QueryParam] string PoBizTransactionClassIds,
            [property: QueryParam] int PoBizTransactionClassId,
            [property: QueryParam] int GrnBizTransactionClassId
        );

        protected override async IAsyncEnumerable<PurchaseStatusReportDTO> ExecuteReportAsync(
            GetPOMonitoringDashboardParameter req, LoginDTO login,
            [System.Runtime.CompilerServices.EnumeratorCancellation] CancellationToken ct)
        {
            var result = await _bll.GetPOMonitoringDashboard(
                req.PoBizTransactionClassIds, req.PoBizTransactionClassId, req.GrnBizTransactionClassId,
                req.ReportCallingDTO.CriteriaDTO, login, ct).ConfigureAwait(false);
            foreach (var row in result.OpenPOs)
            {
                ct.ThrowIfCancellationRequested();
                yield return row;
            }
        }

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