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/RestoreToSnapshot
/// Restores a run DB to a named snapshot checkpoint.
/// SQL Server: RESTORE DATABASE FROM DATABASE_SNAPSHOT (native; run DB must be in SINGLE_USER mode).
/// PostgreSQL: DROP + CREATE DATABASE TEMPLATE from the snapshot copy.
/// Warning: all changes made to the run DB after snapshot creation are lost.
/// </summary>
public class RestoreToSnapshot : BaseEndpoint<RestoreToSnapshot.Params, ResponseStandardDTO<object>>
{
    private readonly ITCMSTestEnvBLL _Bll;
    public RestoreToSnapshot(ITCMSTestEnvBLL bll) => _Bll = bll;

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

    public record Params(
        [property: FromHeader] string                   Login,
        [property: FromBody]   TCMSRestoreToSnapshotDTO 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.RestoreToSnapshotAsync(req.Dto, loginDTO, ct);
        return await GB5Shared.ResponseStandard.Response.CreateSuccessResponse(
            result, CacheKeyLevel.NOT_REQUIRED, loginDTO);
    }
}