public static Book RandomBook()
{
var books = GetBooks();
int bookIndex = CryptoRandom.NextIndex(books.Count);
return(books[bookIndex]);
}
public Word NextWord(Word lastWord = null)
{
if (this.toLearn.Count == 0)
{
return(null);
}
var unknownWords = this.toLearn.ToList();
if (this.toLearn.Count > 1 && lastWord != null)
{
unknownWords.Remove(lastWord);
}
int randomIndex = CryptoRandom.NextIndex(unknownWords.Count);
return(unknownWords[randomIndex]);
}
private void PrepareWords(Category category, int count)
{
List <Word> wordsAlreadyLearned = CurrentUser.GetLearnedWords();
var allWords = category.Words.Except(wordsAlreadyLearned).ToList();
if (allWords.Count == 0)
{
// TODO: Losuj spośród pomyłek
allWords = category.Words.ToList();
}
var noOfWordsInLesson = Math.Min(count, allWords.Count);
for (int i = 0; i < noOfWordsInLesson; i++)
{
int randomIndex = CryptoRandom.NextIndex(allWords.Count);
var word = allWords[randomIndex];
allWords.Remove(word);
this.toLearn.Add(word);
}
}
public Category RandomCategory()
{
int bookIndex = CryptoRandom.NextIndex(Categories.Count);
return(Categories[bookIndex]);
}