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

namespace MMSL.EndPoints.InventoryReports
{
    // Inventory Overview Dashboard, "Stock Holding Trend" tile -- not in the original mockup, see
    // StockHoldingTrendDTO.cs for why it was added (stock-optimization goal). Running-balance
    // query over TSTOCKLEDGER.
    public class GetStockHoldingTrend
        : BaseReportEndpoint<GetStockHoldingTrend.GetStockHoldingTrendParameter, StockHoldingTrendDTO>
    {
        private readonly IInventoryReportsBLL _bll;

        public GetStockHoldingTrend(IInventoryReportsBLL bll)
        {
            _bll = bll;
        }

        public override void Configure()
        {
            Post("/InventoryReports/GetStockHoldingTrend");
            AllowAnonymous();
        }

        public record GetStockHoldingTrendParameter(
            [property: FromHeader] string Login,
            [property: FromBody] ReportCallingDTO ReportCallingDTO,
            [property: QueryParam] int OuId,
            [property: QueryParam] int? ItemId,
            [property: QueryParam] DateTime? PeriodFromDate,
            [property: QueryParam] DateTime? PeriodToDate
        );

        protected override async IAsyncEnumerable<StockHoldingTrendDTO> ExecuteReportAsync(
            GetStockHoldingTrendParameter req, LoginDTO login,
            [System.Runtime.CompilerServices.EnumeratorCancellation] CancellationToken ct)
        {
            var result = await _bll.GetStockHoldingTrend(
                req.OuId, req.ItemId, req.PeriodFromDate, req.PeriodToDate, login, ct).ConfigureAwait(false);
            foreach (var row in result)
            {
                ct.ThrowIfCancellationRequested();
                yield return row;
            }
        }

        protected override async Task<ResponseStandardDTO<object>> ExecutePagedAsync(
            GetStockHoldingTrendParameter req, LoginDTO login, CancellationToken ct)
        {
            try
            {
                var result = await _bll.GetStockHoldingTrend(
                    req.OuId, req.ItemId, req.PeriodFromDate, req.PeriodToDate, 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);
            }
        }
    }
}