/// <summary>
/// Attempts to remove a dictionary from the internal collection.
/// </summary>
/// <param name="dictionary">The dictionary to remove.</param>
/// <returns>Whether the dictionary was successfully removed.</returns>
public bool Remove(IRsgDictionary dictionary)
{
if (dictionary is null)
{
return(false);
}
return(dictionaryConfiguration.Dictionaries.Remove((RsgDictionary)dictionary));
}
private async Task <IEnumerable <string> > CreateWordListFromFile(IRsgDictionary dictionary, CancellationToken cancellationToken)
{
try
{
var wordList = await IOUtility.ReadLinesAsync(dictionary.WordListOptions.Source, dictionary.WordListOptions.Delimiter);
return(wordList);
}
catch
{
return(Enumerable.Empty <string>());
}
}
private async Task <IDictionary <int, string> > CreateAsyncInternal(IRsgDictionary dictionary, CancellationToken cancellationToken)
{
var wordDictionary = new Dictionary <int, string>();
var wordList = dictionary.WordListOptions.IsSourceLocal
? await CreateWordListFromFile(dictionary, cancellationToken)
: await CreateWordListFromHttp(dictionary, cancellationToken);
var index = 0;
wordDictionary = wordList.ToDictionary(e => { return(index++); });
return(wordDictionary);
}
/// <summary>
/// Attempts to add a dictionary to the internal collection.
/// </summary>
/// <param name="dictionary">The dictionary to add.</param>
/// <exception cref="ArgumentException">If the <paramref name="dictionary"/> is <see langword="null"/>.</exception>
public void Add(IRsgDictionary dictionary)
{
if (dictionary is null)
{
throw new ArgumentNullException(nameof(dictionary));
}
if (DoesDictionaryExist(dictionary.Name))
{
throw new ArgumentException("Cannot add dictionary, name must be case insensitively unique!");
}
dictionaryConfiguration.Dictionaries.Add((RsgDictionary)dictionary);
}
private async Task <IEnumerable <string> > CreateWordListFromHttp(IRsgDictionary dictionary, CancellationToken cancellationToken)
{
try
{
var wordListAsString = await DownloadUtility.DownloadFileAsStringAsync(dictionary.WordListOptions.Source, cancellationToken);
var wordList = wordListAsString.Split(dictionary.WordListOptions.Delimiter, StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
return(wordList);
}
catch
{
return(Enumerable.Empty <string>());
}
}
/// <summary>
/// Creates a sequence of words from an <see cref="IRsgDictionary"/>.
/// <para>Returns an empty sequence if unable to read/download dictionary from
/// the source.</para>
/// </summary>
/// <param name="dictionary">A contract representing a <see cref="IRsgDictionary"/>.</param>
/// <param name="cancellationToken">A <see cref="CancellationToken"/> used to cancel this task.</param>
/// <returns>A new <see cref="IEnumerable{string}"/> containing the new word list.</returns>
public async Task <IDictionary <int, string> > CreateWordListAsync(IRsgDictionary dictionary, CancellationToken cancellationToken)
{
return(await CreateAsyncInternal(dictionary, cancellationToken));
}
