/// <summary>
/// Returns the SyncIndexDTO from File or created new
/// </summary>
/// <returns></returns>
private SyncIndexDTO GetIndexBuffer()
{
string filePath = GetIndexFilePath();
if (!File.Exists(filePath))
{
//Create new and Serialize
SyncIndexDTO dto = new SyncIndexDTO();
_logger.Debug("Creating new sync index file: " + filePath);
if (_serilizer.Serialize(filePath, dto))
{
//Change File Access to hidding
HideFile(filePath);
_logger.Debug("Creating new index file succeed");
}
else
{
_logger.Error("Creating file failed tough to serialization failure");
}
return(dto);
}
else
{
_logger.Debug("Deserializing existing index file");
SyncIndexDTO result = _serilizer.Deserialize(filePath);
if (result == null)
{
_logger.Error("Deserialization of the index File failed!");
}
return(result);
}
}
/// <summary>
/// Returns a deserialized DTO instance when file allready exists
/// or creates empty File if not
/// </summary>
/// <returns>Index file content as SyncIndexDTO or null if something went wrong</returns>
public IEnumerable <SyncIndexElementDTO> GetOrCreateIndexFile()
{
if (_indexBuffer == null)
{
_indexBuffer = GetIndexBuffer();
}
return(_indexBuffer?.elements);
}
public SyncIndexManager(ILogger logger, Configuration config)
{
_config = config;
_indexFileName = "syncindex";
_logger = logger;
_serilizer = new JsonSerializer <SyncIndexDTO>();
_indexBuffer = null;
}
/// <summary>
/// Updates the SyncIndex file with the content of the
/// given DTO
/// </summary>
/// <param name="dto"></param>
/// <returns></returns>
private bool UpdateFile(SyncIndexDTO dto)
{
return(_serilizer.Serialize(GetIndexFilePath(), dto));
}