using FastEndpoints;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.DTO.Framework.ResponseStandard;
using GB5Shared.FastEndPoint;
using QMSBLL.Matrix;
using static GB5Shared.GB5Constant.Constant;

namespace QMSSL.EndPoints.Matrix
{
    public class GetMatrixPreview : BaseEndpoint<GetMatrixPreview.Params, ResponseStandardDTO<object>>
    {
        private readonly IMatrixBLL _bll;
        public GetMatrixPreview(IMatrixBLL bll) => _bll = bll;

        public override void Configure()
        {
            Get("/Matrix/GetMatrixPreview");
            AllowAnonymous();
            Description(x => x
                .WithTags("Matrix")
                .WithSummary("Get Matrix Preview")
                .WithDescription("Returns BOM composition, serial number preview, and set generation summary for a matrix. Call this when the user selects a product to populate the preview UI before calling ActivateMatrix."));
        }

        public record Params(
            [property: FromHeader] string Login,
            [property: QueryParam] int MatrixId);

        protected override string? GetCacheKey(Params req, LoginDTO login) => null;

        protected override async Task<ResponseStandardDTO<object>> ExecuteAsync(
            Params req, LoginDTO login, CancellationToken ct)
        {
            try
            {
                var result = await _bll.GetMatrixPreviewAsync(req.MatrixId, login, ct);
                return await GB5Shared.ResponseStandard.Response
                    .CreateSuccessResponse(result, CacheKeyLevel.NOT_REQUIRED, login);
            }
            catch (Exception ex)
            {
                return await GB5Shared.ResponseStandard.Response
                    .CreateExceptionError<string>(ex, CacheKeyLevel.NOT_REQUIRED, login, ex.Message, 500);
            }
        }
    }
}