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

namespace TCMSSL.EndPoints.TestEnv;

/// <summary>
/// POST /TCMS/TestEnv/CreateSnapshot
/// Creates a snapshot checkpoint of a run DB.
/// SQL Server: native COW sparse-file snapshot (near-instant; disk is copy-on-write).
/// PostgreSQL: full-copy template clone (creation time scales with DB size).
/// Snapshot is named: {RunDb}_snap_{SnapshotLabel}.
/// </summary>
public class CreateSnapshot : BaseEndpoint<CreateSnapshot.Params, ResponseStandardDTO<object>>
{
    private readonly ITCMSTestEnvBLL _Bll;
    public CreateSnapshot(ITCMSTestEnvBLL bll) => _Bll = bll;

    public override void Configure()
    {
        Post("/TCMS/TestEnv/CreateSnapshot");
        AllowAnonymous();
    }

    public record Params(
        [property: FromHeader] string                Login,
        [property: FromBody]   TCMSCreateSnapshotDTO Dto
    );

    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.CreateSnapshotAsync(req.Dto, loginDTO, ct);
        return await GB5Shared.ResponseStandard.Response.CreateSuccessResponse(
            result, CacheKeyLevel.NOT_REQUIRED, loginDTO);
    }
}