using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using ASP_Herkansing.Domain.Abstract;
using ASP_Herkansing.Domain.Entities;
using ASP_Herkansing.HtmlHelpers;
using ASP_Herkansing.Models;

namespace ASP_Herkansing.Controllers
{
    public class QuizController : Controller
    {
        private IQuestionsRepository questionsRepository;
        //public attributes for testing
        public int PageSize = 3;
        public int MaxQuestions = 5;

        public QuizController(IQuestionsRepository questionsRepository)
        {
            this.questionsRepository = questionsRepository;
        }

        public ViewResult QuizStart(Quiz quiz, string returnUrl, int page = 1)
        {
            //Assert how many questions are available for picking
            int ListLength = questionsRepository.Questions.Count();

            //Make a list (custom size) to empty the repo in
            List<Question> quizQuestions = new List<Question>(ListLength);
            quizQuestions.AddRange(questionsRepository.Questions);

            //Shuffle the questions
            quizQuestions.Shuffle();

            //Feed view shuffled questions in Pagination
            QuestionsListViewModel model = new QuestionsListViewModel()
            {
                Questions = quizQuestions
                .Skip((page - 1) * PageSize)
                .Take(PageSize)
                ,
                PagingInfo = new PagingInfo
                {
                    CurrentPage = page,
                    ItemsPerPage = PageSize,
                    TotalItems = questionsRepository.Questions.Count()
                }
            };
            return View(model);
        }

        public ViewResult Results(Quiz quiz)
        {

            return View(quiz);
        }
    }
}