namespace LocalModels;

public record LocalQuizQuestion
{
  public ulong? CanvasId { get; set; }
  public string Id { get; set; } = "";
  public string Text { get; init; } = string.Empty;
  public string HtmlText => Markdig.Markdown.ToHtml(Text);
  public string QuestionType { get; init; } = string.Empty;
  public int Points { get; init; }
  public IEnumerable<LocalQuizQuestionAnswer> Answers { get; init; } =
    Enumerable.Empty<LocalQuizQuestionAnswer>();
  public string ToMarkdown()
  {
    var answerArray = Answers.Select((answer, i) =>
    {
      var questionLetter = (char)(i + 97);
      var isMultipleChoice = QuestionType == "multiple_choice";

      var correctIndicator = answer.Correct ? "*" : isMultipleChoice ? "" : " ";


      var questionTypeIndicator = isMultipleChoice
        ? $"{correctIndicator}{questionLetter}) " 
        : $"[{correctIndicator}] ";

      var textWithSpecificNewline = answer.Text.Replace(Environment.NewLine, Environment.NewLine + "   ");
      return $"{questionTypeIndicator}{textWithSpecificNewline}";
    });
    var answersText = string.Join(Environment.NewLine, answerArray);

    return $@"Points: {Points}
{Text}
{answersText}
---
";
  }
}

public static class QuestionType
{
  public static readonly string MULTIPLE_ANSWERS = "multiple_answers";
  public static readonly string MULTIPLE_CHOICE = "multiple_choice";
  public static readonly string ESSAY = "essay";
  public static readonly string SHORT_ANSWER = "short_answer";

  // possible support for: calculated, file_upload, fill_in_multiple_blanks, matching, multiple_dropdowns, numerical,  text_only, true_false,
  public static readonly IEnumerable<string> AllTypes = new string[]
  {
    MULTIPLE_ANSWERS,
    MULTIPLE_CHOICE,
    ESSAY,
    SHORT_ANSWER,
  };
}