private ExtentionPropertiesModel.Row GetRow(Guid id, ExtentionPropertyOwner owner)
{
if (owner == ExtentionPropertyOwner.Log)
{
var property = CurrentAccountDbContext.LogProperties.Find(id);
if (property == null)
{
return(null);
}
return(new ExtentionPropertiesModel.Row()
{
Id = property.Id,
DataType = property.DataType,
Value = property.Value,
Name = property.Name
});
}
if (owner == ExtentionPropertyOwner.Event)
{
var property = CurrentAccountDbContext.EventProperties.Find(id);
if (property == null)
{
return(null);
}
return(new ExtentionPropertiesModel.Row()
{
Id = property.Id,
DataType = property.DataType,
Value = property.Value,
Name = property.Name
});
}
if (owner == ExtentionPropertyOwner.Component)
{
var property = CurrentAccountDbContext.ComponentProperties.Find(id);
if (property == null)
{
return(null);
}
return(new ExtentionPropertiesModel.Row()
{
Id = property.Id,
DataType = property.DataType,
Value = property.Value,
Name = property.Name
});
}
throw new Exception("Неизвестное значение owner: " + owner);
}
public ActionResult DownloadFile(Guid id, ExtentionPropertyOwner owner)
{
var row = GetRow(id, owner);
if (row == null)
{
throw new HttpException(404, "Файл не найден");
}
// банарный файл
if (row.DataType == DataType.Binary)
{
var contentType = GuiHelper.GetContentType(row.Name);
var bytes = Convert.FromBase64String(row.Value);
return(File(bytes, contentType, row.Name));
}
// текстовые файлы
var textTypes = new[]
{
DataType.String,
DataType.Unknown
};
if (textTypes.Contains(row.DataType))
{
var bytes = Encoding.UTF8.GetBytes(row.Value);
bytes = Encoding.UTF8.GetPreamble().Concat(bytes).ToArray();
var fileName = row.Name.EndsWith(".txt", StringComparison.InvariantCultureIgnoreCase)
? row.Name
: row.Name + ".txt";
return(File(bytes, "text/plain", fileName));
}
throw new Exception("Недопустимое для файла значение DataType: " + row.DataType);
}
