using FastEndpoints;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.DTO.Framework.ResponseStandard;
using GB5Shared.DTO.Report;
using GB5Shared.FastEndPoint;
using RecruitmentBLL.Reports;
using RecruitmentDAL.DTO.Reports;
using static GB5Shared.GB5Constant.Constant;

namespace RecruitmentSL.EndPoints.RecruitmentReports
{
    // HR/executive recruitment analytics rollup (Phase 5 of the Recruitment build-out plan — see
    // /Users/venkatv/.claude/plans/can-you-check-the-precious-sunbeam.md). Org-wide, no recruiter
    // grouping: requisitions by RequisitionType/RequisitionStatus, planned headcount vs. actual
    // hires in the period, and average cost-per-hire (a v1 proxy — see
    // HrRecruitmentAnalyticsReportBLL's doc comment).
    public class GetHrRecruitmentAnalyticsReport
        : BaseReportEndpoint<GetHrRecruitmentAnalyticsReport.GetHrRecruitmentAnalyticsReportParameter, HrRecruitmentAnalyticsDTO>
    {
        private readonly IHrRecruitmentAnalyticsReportBLL _bll;

        public GetHrRecruitmentAnalyticsReport(IHrRecruitmentAnalyticsReportBLL bll)
        {
            _bll = bll;
        }

        public override void Configure()
        {
            Post("/RecruitmentReports/GetHrRecruitmentAnalyticsReport");
            // Roles() throws 500 here — no host in this repo configures AddAuthentication (see
            // GetJobRequisition.cs's identical documented gap). AllowAnonymous matches every other
            // endpoint in this SL module today.
            AllowAnonymous();
        }

        public record GetHrRecruitmentAnalyticsReportParameter(
            [property: FromHeader] string Login,
            [property: FromBody] ReportCallingDTO ReportCallingDTO,
            [property: QueryParam] int FirstNumber,
            [property: QueryParam] int MaxResult
        );

        protected override IAsyncEnumerable<HrRecruitmentAnalyticsDTO> ExecuteReportAsync(
            GetHrRecruitmentAnalyticsReportParameter req, LoginDTO login, CancellationToken ct)
            => _bll.GetHrRecruitmentAnalyticsStream(
                req.FirstNumber, req.MaxResult, req.ReportCallingDTO?.CriteriaDTO, login, ct);

        protected override async Task<ResponseStandardDTO<object>> ExecutePagedAsync(
            GetHrRecruitmentAnalyticsReportParameter req, LoginDTO login, CancellationToken ct)
        {
            var result = await _bll.GetHrRecruitmentAnalytics(
                req.FirstNumber, req.MaxResult, req.ReportCallingDTO?.CriteriaDTO, login, ct).ConfigureAwait(false);

            return await GB5Shared.ResponseStandard.Response.CreateSuccessResponse(
                result, CacheKeyLevel.NOT_REQUIRED, login);
        }
    }
}