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

namespace TMSSL.EndPoints.Promotion
{
    // ============================================================
    // ExportForPromotionBridge — internal service-to-service endpoint. Called only by
    // FrameworkBLL's RemoteHttpPromotionAdapter (running in FrameworkSL's own process), never by a
    // browser client, so the request carries a plain Login header the same way every other
    // internal cross-host call in this codebase already does (see JobEngineScheduleClient / the
    // "gb5-internal"/"eip-internal" named HttpClients in FrameworkSL/Program.cs) — no separate
    // machine credential, same trust model as any other GB5 endpoint reached over the internal
    // network. See GB5Shared/DTO/Promotion/PromotionBridgeDTOs.cs for why this exists.
    // ============================================================
    public class ExportForPromotionBridge : BaseEndpoint<ExportForPromotionBridge.Parameters, ResponseStandardDTO<object>>
    {
        private readonly IServiceProvider _ServiceProvider;

        public ExportForPromotionBridge(IServiceProvider serviceProvider)
        {
            _ServiceProvider = serviceProvider;
        }

        public override void Configure()
        {
            Post("/PromotionBridge/ExportForPromotion");
            AllowAnonymous();
        }

        public record Parameters(
            [property: FromBody] PromotionBridgeExportRequestDTO Body,
            [property: FromHeader] string Login
        );

        protected override string? GetCacheKey(Parameters req, LoginDTO loginDTO) => null;

        protected override async Task<ResponseStandardDTO<object>> ExecuteAsync(Parameters req, LoginDTO loginDTO, CancellationToken ct)
        {
            try
            {
                var bundle = await PromotionBridgeService.ExportAsync(
                    _ServiceProvider, req.Body.EntityTypeCode, req.Body.OriginEntityId, loginDTO, ct);
                return await GB5Shared.ResponseStandard.Response.CreateSuccessResponse(bundle, CacheKeyLevel.NOT_REQUIRED, loginDTO);
            }
            catch (Exception ex)
            {
                return await GB5Shared.ResponseStandard.Response.CreateExceptionError<string>(ex, CacheKeyLevel.NOT_REQUIRED, loginDTO, ex.Message, 500);
            }
        }
    }
}