public Puzzle SetWord(CellRange cellRange, string word)
{
//if (!Matches(cellRange, word)) throw new ArgumentException("Mismatch");
var puzzle = new Puzzle(CopyOfCells(), this.cellRanges, this.Words.Where(w => w != word), this.solution);
puzzle.SetLetters(cellRange, word);
var newFilled = puzzle.FilledCellRanges.ToList();
var currentFilled = FilledCellRanges.ToList();
var diff = newFilled.Except(currentFilled).ToList();
diff.Remove(cellRange);
if (diff.Count() > 0)
{
foreach (var cr in diff)
{
var extraWord = puzzle.GetWord(cr);
if (!puzzle.Words.Remove(extraWord))
{
return(null); // Fill was invalid
}
}
}
return(puzzle);
}
public void Verify()
{
var notFilled = cellRanges.Where(cr => GetLetters(cr, cells).Any(l => !l.HasValue)).ToList();
if (Words.Count() != notFilled.Count())
{
throw new Exception($"Expected {cellRanges.Count()} words, but got {Words.Count()}");
}
var wordLengths = Words.GroupBy(w => w.Length).ToDictionary(g => g.Key, g => g.Count());
var rangeLengths = notFilled.GroupBy(cr => cr.Length).ToDictionary(g => g.Key, g => g.Count());
foreach (var kvp in rangeLengths)
{
if (wordLengths[kvp.Key] != kvp.Value)
{
throw new Exception($"Expected {kvp.Value} words of length {kvp.Key}, but got {wordLengths[kvp.Key]}");
}
}
if (!cellRanges.Any(cr => PartiallyFilled(cr)))
{
throw new Exception($"Expected at least one initial anchor word");
}
if (solution != null)
{
var unsedWords = Words.Concat(FilledCellRanges.Select(cr => GetWord(cr))).ToList();
foreach (var cellRange in cellRanges)
{
var word = GetWord(cellRange, solution);
if (!unsedWords.Remove(word))
{
throw new Exception($"Solution word '{word}' is not a valid word or it was used more than once.");
}
}
}
}
