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

namespace FrameworkSL.Endpoints.GOP.Execution
{
    // Returns ordered state transition log entries for a single execution.
    // Each entry captures a status transition with timestamp and optional error detail.
    public class GetGopExecutionStateLogs
        : BaseEndpoint<GetGopExecutionStateLogs.Params, GB5Shared.DTO.Framework.ResponseStandard.ResponseStandardDTO<object>>
    {
        private readonly IGopExecutionMonitorBLL _Bll;

        public GetGopExecutionStateLogs(IGopExecutionMonitorBLL bll) => _Bll = bll;

        public override void Configure()
        {
            Get("/GOP/GetGopExecutionStateLogs");
            AllowAnonymous();
        }

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

        // Execution logs are highly volatile — skip cache.
        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.GetExecutionStateLogs(req.ExecutionId, 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);
            }
        }
    }
}