using Demo.Data.RemoteData.RemoteDataBase.DAO;
using Demo.Data.Repository;
using Demo.domain.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Demo.Domain.UseCase
{
    public class UseCaseGeneratePresence
    {
        public readonly IUserRepository _userRepository;
        public readonly IPresenceRepository _presenceRepository;

        public UseCaseGeneratePresence(IUserRepository userRepository, IPresenceRepository presenceRepository)
        {
            _userRepository = userRepository;
            _presenceRepository = presenceRepository;
        }




        public List<PresenceDao> GetPresenceByDateAndGroup(DateTime date, int groupId)
        {
            return _presenceRepository.GetPresenceByDateAndGroup(date, groupId);
        }

        public void GeneratePresenceDaily(int firstLesson, int lastLesson, int groupId, DateTime currentDate)
        {
            try
            {
                var users = _userRepository.GetAllUsers.Where(u => u.GroupId == groupId).ToList();

                List<PresenceDao> presences = new List<PresenceDao>();
                for (int lessonNumber = firstLesson; lessonNumber <= lastLesson; lessonNumber++)
                {
                    foreach (var user in users)
                    {
                        Console.WriteLine($"UserId: {user.UserId}, GroupId: {user.GroupId}"); // Выводим информацию о пользователе
                        var presence = new PresenceDao
                        {
                            UserId = user.UserId,
                            GroupId = user.GroupId,
                            Date = DateOnly.FromDateTime(currentDate),
                            LessonNumber = lessonNumber,
                            IsAttedance = true
                        };

                        try
                        {
                            _presenceRepository.SavePresence(new List<PresenceDao> { presence });
                            Console.WriteLine($"Посещаемость добавлена для UserId = {user.UserId}, LessonNumber = {lessonNumber}");
                        }
                        catch (Exception ex)
                        {
                            Console.WriteLine($"Ошибка при добавлении посещаемости для UserId = {user.UserId}: {ex.Message}");
                            if (ex.InnerException != null)
                            {
                                Console.WriteLine($"Inner exception: {ex.InnerException.Message}");
                            }
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Ошибка при генерации посещаемости: {ex.Message}");
                if (ex.InnerException != null)
                {
                    Console.WriteLine($"Inner exception: {ex.InnerException.Message}");
                }
            }
        }


        public void GenerateWeeklyPresence(int firstLesson, int lastLesson, int groupId, DateTime startTime)
        {
            for (int i = 0; i < 7; i++)
            {
                DateTime currentTime = startTime.AddDays(i);
                GeneratePresenceDaily(firstLesson, lastLesson, groupId, currentTime);
            }
        }



        // Отметить пользователя как отсутствующего на диапазоне занятий
        public void MarkUserAbsentForLessons(int userId, int groupId, int firstLesson, int lastLesson, DateTime date)
        {
            var presences = _presenceRepository.GetPresenceByDateAndGroup(date, groupId);
            foreach (var presence in presences.Where(p => p.UserId == userId && p.LessonNumber >= firstLesson && p.LessonNumber <= lastLesson))
            {
                presence.IsAttedance = false;
            }
            _presenceRepository.SavePresence(presences);
        }



        public List<PresenceDao> GetAllPresenceByGroup(int groupId)
        {
            
            return _presenceRepository.GetPresenceByGroup(groupId);
        }




    }
}