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

namespace FrameworkSL.Endpoints.EntityViewer
{
    // POST /EntityViewer/DeleteEntityLayoutVersion
    //
    // Discards a Draft version that was never activated (soft delete). Fails with a clear
    // error if the version is already Active or Archived — those are permanent history.
    public class DeleteEntityLayoutVersion
        : BaseEndpoint<DeleteEntityLayoutVersion.Params, GB5Shared.DTO.Framework.ResponseStandard.ResponseStandardDTO<object>>
    {
        private readonly IEntityLayoutBLL _Bll;

        public DeleteEntityLayoutVersion(IEntityLayoutBLL bll) => _Bll = bll;

        public override void Configure()
        {
            Post("/EntityViewer/DeleteEntityLayoutVersion");
            AllowAnonymous();
        }

        public record Params(
            [property: FromHeader] string Login,
            [property: FromBody]   DeleteRequest Request
        );

        public record DeleteRequest(int EntityLayoutVersionId);

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

        protected override async Task<GB5Shared.DTO.Framework.ResponseStandard.ResponseStandardDTO<object>> ExecuteAsync(
            Params req, LoginDTO loginDTO, CancellationToken ct)
        {
            try
            {
                var result = await _Bll.DeleteLayoutVersion(req.Request.EntityLayoutVersionId, 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);
            }
        }
    }
}