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

namespace AnalyticsSL.EndPoints.KPI
{
    // Fast list read off the TKPIVALUE snapshot posted by PostKPIValues -- never a compute-on-read
    // path. The natural target for the FE's already-built kpi-card-adapter.
    public class GetKPIValues : BaseEndpoint<GetKPIValues.GetKPIValuesParameters, ResponseStandardDTO<object>>
    {
        private readonly IKPIEvaluationBLL _bll;

        public GetKPIValues(IKPIEvaluationBLL bll) => _bll = bll;

        public override void Configure()
        {
            Post("/Analytics/KPI/GetKPIValues");
            AllowAnonymous();
        }

        public record GetKPIValuesRequestBody(List<int>? KpiIds, int PeriodDetailId, int OUId);

        public record GetKPIValuesParameters(
            [property: FromHeader] string Login,
            [property: FromBody]   GetKPIValuesRequestBody Body
        );

        protected override string? GetCacheKey(GetKPIValuesParameters req, LoginDTO login) => null;

        protected override async Task<ResponseStandardDTO<object>> ExecuteAsync(
            GetKPIValuesParameters req, LoginDTO login, CancellationToken ct)
        {
            try
            {
                var result = await _bll.GetKPIValues(req.Body.KpiIds, req.Body.PeriodDetailId, req.Body.OUId, login, ct);
                return await GB5Shared.ResponseStandard.Response.CreateSuccessResponse(result, CacheKeyLevel.NOT_REQUIRED, login);
            }
            catch (Exception ex)
            {
                return await GB5Shared.ResponseStandard.Response.CreateExceptionError<string>(
                    ex, CacheKeyLevel.NOT_REQUIRED, login, ex.Message, 500);
            }
        }
    }
}