public string[] GetPuzzleFilePathsFromPuzzleDirectory(string puzzleDirectory, int maximumNumberOfFiles)
{
string puzzleDirectoryPath = $"{_fileOperations.ApplicationBasePath("WordSearch")}{Path.DirectorySeparatorChar}{puzzleDirectory}";
if (!_fileOperations.DirectoryExists(puzzleDirectoryPath))
{
throw new ArgumentException($"directory does not exist: {puzzleDirectoryPath}");
}
string[] puzzleFilePaths = _fileOperations.GetSortedDirectoryContents(puzzleDirectoryPath);
if (puzzleFilePaths.Length == 0)
{
throw new ArgumentException($"puzzle directory contains no files: {puzzleDirectoryPath}");
}
if (puzzleFilePaths.Length > maximumNumberOfFiles)
{
Array.Resize(ref puzzleFilePaths, maximumNumberOfFiles);
}
return(puzzleFilePaths);
}