using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Shared
{
    public interface IQuizService<TQuiz>
    {
        // Retrieves a specific quiz by its unique identifier (id).
        // 'id' is the unique identifier of the quiz to be retrieved.
        Task<TQuiz> GetQuizById(int id);

        // Retrieves all quizzes, with pagination support.
        // This returns a list of all quizzes in the system.
        Task<PaginationResult<TQuiz>> GetAllQuiz();

        // Retrieves a subset of quizzes based on the provided index and page size.
        // 'index' is the starting point for pagination (page number).
        // 'pageSize' is the number of quizzes per page.
        Task<PaginationResult<TQuiz>> GetSomeQuiz(int index, int pageSize);

        // Adds a new quiz to the system.
        // 'quiz' is the quiz object that will be added to the system.
        Task AddQuiz(TQuiz quiz);

        // Updates an existing quiz identified by its unique identifier ('quizId').
        // 'quizId' is the unique identifier of the quiz to be updated
        // 'quiz' contains the updated quiz data.
        Task UpdateQiz(int quizId, TQuiz quiz);

        // Removes a quiz from the system based on its unique identifier ('quizId').
        // 'quizId' is the unique identifier of the quiz to be removed from the system.
        Task RemoveQuiz(int quizId);

        // Retrieves the number of questions in a specific quiz identified by its unique identifier ('quizId').
        // 'quizId' is the unique identifier of the quiz for which the number of questions is requested.
        Task<int> GetNbQuestionQuiz(int quizId);
    }
}