public NotFound TryGetFile(int idFile, out Db.File result)
{
try
{
using (var db = new Db.DataContext())
{
result = db.File.Where(x => x.IdFile == idFile && !x.IsRemoved && !x.IsRemoving).FirstOrDefault();
return(result != null ? NotFound.Success : NotFound.NotFound);
}
}
catch (Exception ex)
{
result = null;
this.RegisterEvent(EventType.Error, "Ошибка получения файла", $"Идентификатор файла: {idFile}.", null, ex);
return(NotFound.Error);
}
}
public RegisterResult Register(out Db.File result, string nameFile, string pathFile, Guid?uniqueKey = null, DateTime?dateExpires = null)
{
if (string.IsNullOrEmpty(nameFile))
{
throw new ArgumentNullException(nameof(nameFile));
}
if (string.IsNullOrEmpty(pathFile))
{
throw new ArgumentNullException(nameof(pathFile));
}
if (Path.GetInvalidFileNameChars().Any(x => nameFile.Contains(x)))
{
throw new ArgumentException("Содержит символы, не разрешенные в имени файла.", nameof(nameFile));
}
result = null;
var pathFileFull = Path.Combine(AppCore.ApplicationWorkingFolder, pathFile);
if (!File.Exists(pathFileFull))
{
return(RegisterResult.NotFound); // throw new FileNotFoundException("Файл не существует", pathFile);
}
try
{
var context = AppCore.GetUserContextManager().GetCurrentUserContext();
var pathFileOld = string.Empty;
using (var db = new Db.DataContext())
{
var data = uniqueKey.HasValue ? (db.File.Where(x => x.UniqueKey == uniqueKey).FirstOrDefault() ?? null) : null;
if (data != null && pathFile != data.PathFile)
{
pathFileOld = data.PathFile;
}
var isNew = false;
if (data == null)
{
isNew = true;
data = new Db.File();
}
data.IdModule = 0;
data.NameFile = nameFile;
data.PathFile = pathFile;
data.DateChange = DateTime.Now.Timestamp();
data.DateExpire = dateExpires;
data.IdUserChange = context.IdUser;
data.UniqueKey = uniqueKey;
data.IsRemoved = false;
data.IsRemoving = false;
var fileInfo = new FileInfo(pathFileFull);
var fileType = fileInfo.GetFileType();
data.TypeConcrete = fileType.Mime;
if (fileType == MimeTypes.JPEG || fileType == MimeTypes.PNG || fileType == MimeTypes.BMP || fileType == MimeTypes.GIF)
{
data.TypeCommon = FileTypeCommon.Image;
}
if (isNew)
{
db.File.Add(data);
}
if (db.SaveChanges() > 0)
{
if (!string.IsNullOrEmpty(pathFileOld))
{
var pathFileFullOld = Path.Combine(AppCore.ApplicationWorkingFolder, pathFileOld);
if (File.Exists(pathFileFullOld))
{
File.Delete(pathFileFullOld);
}
}
}
result = data;
return(RegisterResult.Success);
}
}
catch (Exception ex)
{
this.RegisterEvent(EventType.Error, "Ошибка регистрации файла", $"nameFile='{nameFile}'.\r\npathFile='{pathFile}'.\r\nuniqueKey='{uniqueKey}'.\r\ndateExpires={dateExpires?.ToString("dd.MM.yyyy HH:mm:ss")}.", null, ex);
return(RegisterResult.Error);
}
}
public NotFound TryGetFile(Expression <Func <Db.File, bool> > searchExpression, out Db.File result)
{
if (searchExpression == null)
{
throw new ArgumentNullException(nameof(searchExpression));
}
try
{
using (var db = new Db.DataContext())
{
try
{
var query = db.File.Where(x => !x.IsRemoved && !x.IsRemoving).Where(searchExpression).FirstOrDefault();
result = query;
}
catch (NotSupportedException)
{
throw new ArgumentException("Некорректное выражение", nameof(searchExpression));
}
return(result != null ? NotFound.Success : NotFound.NotFound);
}
}
catch (ArgumentException) { throw; }
catch (Exception ex)
{
result = null;
this.RegisterEvent(EventType.Error, "Ошибка получения файла", $"Выражение поиска: {searchExpression.ToString()}.", null, ex);
return(NotFound.Error);
}
}