using BizProcessBLL.Interfaces;
using FastEndpoints;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.DTO.Framework.ResponseStandard;
using GB5Shared.FastEndPoint;
using static GB5Shared.GB5Constant.Constant;

namespace BizProcessSL.Endpoints
{
    public class GetProcessVariantMetrics : BaseEndpoint<GetProcessVariantMetrics.Parameters, ResponseStandardDTO<object>>
    {
        private readonly IBizProcessBLL _BizProcessBLL;

        public GetProcessVariantMetrics(IBizProcessBLL BizProcessBLL) => _BizProcessBLL = BizProcessBLL;

        public override void Configure()
        {
            Get("/BizProcess/GetProcessVariantMetrics");
            AllowAnonymous();
        }

        public record Parameters(
            [property: FromHeader] string Login,
            [property: QueryParam] int BizProcessVariantId,
            // Phase 10b — optional. When supplied, Efficiency-category metrics get a real
            // single-instance cycle-time actual off that document's traced chain (see BLL
            // comment). Omitted (-1) preserves the original targets-only behavior.
            [property: QueryParam] int PivotAllocationId = -1
        );

        protected override string? GetCacheKey(Parameters req, LoginDTO login) => null; // NOT_REQUIRED — computed/live-derived values

        protected override async Task<ResponseStandardDTO<object>> ExecuteAsync(
            Parameters req, LoginDTO login, CancellationToken ct)
        {
            try
            {
                var data = await _BizProcessBLL.GetProcessVariantMetrics(req.BizProcessVariantId, req.PivotAllocationId, login, ct);
                return await GB5Shared.ResponseStandard.Response
                    .CreateSuccessResponse(data, CacheKeyLevel.NOT_REQUIRED, login);
            }
            catch (Exception ex)
            {
                return await GB5Shared.ResponseStandard.Response
                    .CreateExceptionError<string>(ex, CacheKeyLevel.NOT_REQUIRED, login, ex.Message, 500);
            }
        }
    }
}