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.Export;

/// <summary>
/// GET /TCMS/Export/ExportTCMSUATChecklist?moduleId={int}&amp;testRunId={int}
/// Returns a ClosedXML Excel byte[] as base64 in the response payload.
/// No cache — always generated fresh.
/// </summary>
public class ExportTCMSUATChecklist : BaseEndpoint<ExportTCMSUATChecklist.Params, ResponseStandardDTO<object>>
{
    private readonly ITCMSImportBLL _Bll;
    public ExportTCMSUATChecklist(ITCMSImportBLL bll) => _Bll = bll;

    public override void Configure()
    {
        Get("/TCMS/Export/ExportTCMSUATChecklist");
        AllowAnonymous();
    }

    public record Params(
        [property: FromHeader] string Login,
        [property: QueryParam] int    ModuleId,
        [property: QueryParam] int?   TestRunId
    );

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

    protected override async Task<ResponseStandardDTO<object>> ExecuteAsync(
        Params req, LoginDTO loginDTO, CancellationToken ct)
    {
        var bytes = await _Bll.ExportUATChecklistAsync(req.ModuleId, req.TestRunId, loginDTO, ct);
        // Return as base64 — Angular will decode and trigger file download
        var result = Convert.ToBase64String(bytes);
        return await GB5Shared.ResponseStandard.Response.CreateSuccessResponse(
            result, CacheKeyLevel.NOT_REQUIRED, loginDTO);
    }
}