sharee.bike-App/TINKLib/ViewModel/MiniSurvey/Question/CheckOneViewModel.cs

using System.Collections.Generic;
using System.Linq;

namespace TINK.ViewModel.MiniSurvey.Question
{
    public class CheckOneViewModel : IMiniSurveyQuestion
    {
        /// <summary> Constructs object. </summary>
        /// <param name="question">Holds the question with key asked to user.</param>
        /// <param name="answers">Holds the list of possible answers with their option keys.</param>
        public CheckOneViewModel(
            KeyValuePair<string, string> question,
            Dictionary<string, string> answers)
        {
            Question = question; 
            Answers = answers ?? new Dictionary<string, string>();
        }

        /// <summary> Holds the question with key asked to user. </summary>
        public KeyValuePair<string, string> Question { get; }

        /// <summary> Holds the question with key asked to user exposed to GUI. </summary>
        public string QuestionText => Question.Value;

        /// <summary> Holds the list of possible answers with their option keys. </summary>
        public Dictionary<string, string> Answers { get; }

        /// <summary> Holds the list of possible answers exposed to GUI. </summary>
        public IEnumerable<string> AnswersText
        {
            get => Answers.Select(x => x.Value).ToList();
            set => AnswersText = Answers.Select(x => x.Value).ToList();
        }

        /// <summary> Holds the users selected answer (one of answers) with its option key. </summary>
        public KeyValuePair<string, string> Answer { get; private set; }

        /// <summary> Holds the users selected answer (one of answers) in GUI. </summary>
        public string AnswerText
        {
            get => Answer.Value;
            set => Answer = Answers.FirstOrDefault(x => x.Value == value);
        }
    }
}