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

namespace TCMSSL.EndPoints.Traceability;

/// <summary>
/// GET /TCMS/Traceability/GetCoverageGaps
/// Returns registered screens and API operations that have zero active linked test cases.
/// Used by QA team to surface where test coverage is missing.
/// Can also be called from CI pipelines to gate deployments.
/// </summary>
public class GetCoverageGaps : BaseEndpoint<GetCoverageGaps.Params, ResponseStandardDTO<object>>
{
    private readonly ITCMSTraceabilityBLL _Bll;
    public GetCoverageGaps(ITCMSTraceabilityBLL bll) => _Bll = bll;

    public override void Configure()
    {
        Get("/TCMS/Traceability/GetCoverageGaps");
        AllowAnonymous();
    }

    public record Params(
        [property: FromHeader] string Login
    );

    protected override string? GetCacheKey(Params req, LoginDTO loginDTO) => null;

    protected override async Task<ResponseStandardDTO<object>> ExecuteAsync(
        Params req, LoginDTO loginDTO, CancellationToken ct)
    {
        var result = await _Bll.GetCoverageGapsAsync(loginDTO, ct);
        return await GB5Shared.ResponseStandard.Response.CreateSuccessResponse(
            result, CacheKeyLevel.NOT_REQUIRED, loginDTO);
    }
}