using FastEndpoints;
using FrameworkBLL.GOP;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.FastEndPoint;
using static GB5Shared.GB5Constant.Constant;

namespace FrameworkSL.Endpoints.GOP.Mapping
{
    // Mapping Wizard, Step 4 "Test & Deploy" — ad hoc preview of a mapper's before/after
    // JSON without a real GOP Flow execution. Thin wrapper around the already-working
    // IMappingEngineBLL.TransformAsync (code-based, no FactBag overload).
    public class TestMappingTransform
        : BaseEndpoint<TestMappingTransform.TestMappingTransformParameters, GB5Shared.DTO.Framework.ResponseStandard.ResponseStandardDTO<object>>
    {
        private readonly IMappingBLL _Bll;

        public TestMappingTransform(IMappingBLL bll) => _Bll = bll;

        public override void Configure()
        {
            Post("/Mapping/TestMappingTransform");
            AllowAnonymous();
        }

        public record TestMappingTransformParameters(
            [property: FromHeader] string Login,
            [property: FromBody]   TestMappingTransformBody Body
        );

        public record TestMappingTransformBody(
            string MapperCode,
            string SamplePayloadJson
        );

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

        protected override async Task<GB5Shared.DTO.Framework.ResponseStandard.ResponseStandardDTO<object>> ExecuteAsync(
            TestMappingTransformParameters req, LoginDTO loginDTO, CancellationToken ct)
        {
            try
            {
                var result = await _Bll.TestMappingTransform(req.Body.MapperCode, req.Body.SamplePayloadJson, loginDTO, ct);
                return await GB5Shared.ResponseStandard.Response
                    .CreateSuccessResponse(result, CacheKeyLevel.NOT_REQUIRED, loginDTO);
            }
            catch (Exception ex)
            {
                return await GB5Shared.ResponseStandard.Response
                    .CreateExceptionError<string>(ex, CacheKeyLevel.NOT_REQUIRED, loginDTO, ex.Message, 500);
            }
        }
    }
}