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

namespace FrameworkSL.Endpoints.GOP.Flow
{
    // Returns FlowStepEdgeId / FromStepId / ToStepId / EdgeLabel for all edges of a flow —
    // used to populate dropdowns/lists in the flow designer UI.
    public class GetSelectListGopFlowStepEdge
        : BaseEndpoint<GetSelectListGopFlowStepEdge.Params, GB5Shared.DTO.Framework.ResponseStandard.ResponseStandardDTO<object>>
    {
        private readonly IGopFlowBLL _Bll;

        public GetSelectListGopFlowStepEdge(IGopFlowBLL bll) => _Bll = bll;

        public override void Configure()
        {
            Post("/GOP/GetSelectListGopFlowStepEdge");
            AllowAnonymous();
        }

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

        protected override string? GetCacheKey(Params req, LoginDTO loginDTO)
            => KeyGenerator.KeyGeneration(req.FlowId, EntityConstant.GOPFLOWSTEP, CacheKeyLevel.CLIENT_LEVEL, loginDTO);

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