private string GetLogFileName(bool isFirstFile)
{
if (isFirstFile)
{
FileSystemFacade.CreateDirectory(logPath);
}
var logFileNamePart = BuildLogFileName(isFirstFile);
var triedFileNames = new StringBuilder();
for (var i = 0; i < MaxTriesForDuplicatedFileNames; ++i)
{
var currentFileName = BuildFullLogFilePath(logFileNamePart.ToString(), i);
if (!FileSystemFacade.FileExists(currentFileName))
{
return(currentFileName);
}
triedFileNames.AppendLine(currentFileName);
}
throw new InvalidOperationException($"Failed to generate unique log filename after {MaxTriesForDuplicatedFileNames} tries. Following files exist:\n{triedFileNames}");
}
private IStreamWriterFacade OpenNextFile(bool isFirstFile)
{
return(FileSystemFacade.CreateStreamWriter(GetLogFileName(isFirstFile), true, Encoding.UTF8, true));
}