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using Microsoft.EntityFrameworkCore;
using System.Globalization;
using System.IO;
using System.Threading;
using System.Threading.Tasks;
using Timeline.Entities;
namespace Timeline.Services.DatabaseManagement
{
public interface IDatabaseBackupService
{
Task BackupAsync(CancellationToken cancellationToken = default);
}
public class DatabaseBackupService : IDatabaseBackupService
{
private readonly DatabaseContext _database;
private readonly IPathProvider _pathProvider;
private readonly IClock _clock;
public DatabaseBackupService(DatabaseContext database, IPathProvider pathProvider, IClock clock)
{
_database = database;
_pathProvider = pathProvider;
_clock = clock;
}
public async Task BackupAsync(CancellationToken cancellationToken = default)
{
var backupDirPath = _pathProvider.GetDatabaseBackupDirectory();
Directory.CreateDirectory(backupDirPath);
var fileName = _clock.GetCurrentTime().ToString("yyyy-MM-ddTHH-mm-ss", CultureInfo.InvariantCulture);
var path = Path.Combine(backupDirPath, fileName);
await _database.Database.ExecuteSqlInterpolatedAsync($"VACUUM INTO {path}", cancellationToken);
}
}
}
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