NadekoBot/NadekoBot.Core/Modules/Games/Common/Trivia/TriviaQuestion.cs

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C#
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using NadekoBot.Extensions;
// THANKS @ShoMinamimoto for suggestions and coding help
namespace NadekoBot.Modules.Games.Common.Trivia
{
public class TriviaQuestion
{
//represents the min size to judge levDistance with
private static readonly HashSet<Tuple<int, int>> strictness = new HashSet<Tuple<int, int>> {
new Tuple<int, int>(9, 0),
new Tuple<int, int>(14, 1),
new Tuple<int, int>(19, 2),
new Tuple<int, int>(22, 3),
};
public static int maxStringLength = 22;
public string Category { get; set; }
public string Question { get; set; }
public string ImageUrl { get; set; }
public string AnswerImageUrl { get; set; }
public string Answer { get; set; }
private string _cleanAnswer;
public string CleanAnswer => _cleanAnswer ?? (_cleanAnswer = Clean(Answer));
public TriviaQuestion(string q, string a, string c, string img = null, string answerImage = null)
{
this.Question = q;
this.Answer = a;
this.Category = c;
this.ImageUrl = img;
this.AnswerImageUrl = answerImage ?? img;
}
public string GetHint() => Scramble(Answer);
public bool IsAnswerCorrect(string guess)
{
if (Answer.Equals(guess))
{
return true;
}
var cleanGuess = Clean(guess);
if (CleanAnswer.Equals(cleanGuess))
{
return true;
}
int levDistanceClean = CleanAnswer.LevenshteinDistance(cleanGuess);
int levDistanceNormal = Answer.LevenshteinDistance(guess);
return JudgeGuess(CleanAnswer.Length, cleanGuess.Length, levDistanceClean)
|| JudgeGuess(Answer.Length, guess.Length, levDistanceNormal);
}
private bool JudgeGuess(int guessLength, int answerLength, int levDistance)
{
foreach (Tuple<int, int> level in strictness)
{
if (guessLength <= level.Item1 || answerLength <= level.Item1)
{
if (levDistance <= level.Item2)
return true;
else
return false;
}
}
return false;
}
private string Clean(string str)
{
str = " " + str.ToLower() + " ";
str = Regex.Replace(str, "\\s+", " ");
str = Regex.Replace(str, "[^\\w\\d\\s]", "");
//Here's where custom modification can be done
str = Regex.Replace(str, "\\s(a|an|the|of|in|for|to|as|at|be)\\s", " ");
//End custom mod and cleanup whitespace
str = Regex.Replace(str, "^\\s+", "");
str = Regex.Replace(str, "\\s+$", "");
//Trim the really long answers
str = str.Length <= maxStringLength ? str : str.Substring(0, maxStringLength);
return str;
}
private static string Scramble(string word)
{
var letters = word.ToCharArray();
var count = 0;
for (var i = 0; i < letters.Length; i++)
{
if (letters[i] == ' ')
continue;
count++;
if (count <= letters.Length / 5)
continue;
if (count % 3 == 0)
continue;
if (letters[i] != ' ')
letters[i] = '_';
}
return string.Join(" ", new string(letters).Replace(" ", " \u2000").AsEnumerable());
}
}
}