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
{
    // The 'KPI Card'/'KPI List' portlet types' own data source (Phase 5) -- resolves "current
    // period" dynamically (latest posted TKPIVALUE for the requested OU) rather than requiring the
    // caller to pin a PeriodDetailId, so a dashboard card always reflects whatever was most
    // recently posted without needing reconfiguration.
    public class GetKPIValuesForPortlet : BaseEndpoint<GetKPIValuesForPortlet.GetKPIValuesForPortletParameters, ResponseStandardDTO<object>>
    {
        private readonly IKPIEvaluationBLL _bll;

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

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

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

        public record GetKPIValuesForPortletParameters(
            [property: FromHeader] string Login,
            [property: FromBody]   GetKPIValuesForPortletRequestBody Body
        );

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

        protected override async Task<ResponseStandardDTO<object>> ExecuteAsync(
            GetKPIValuesForPortletParameters req, LoginDTO login, CancellationToken ct)
        {
            try
            {
                var result = await _bll.GetKPIValuesForPortlet(req.Body.KpiIds, 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);
            }
        }
    }
}