using data.DAO;
using data.Repository;
using domain.Entity;
using domain.Request;
using domain.UseCase;
using System;
using System.Collections.Generic;

namespace domain.Service
{
    public class PresenceService : IPresenceUseCase
    {
        private readonly IPresenceRepository _presenceRepository;

        public PresenceService(IPresenceRepository presenceRepository)
        {
            _presenceRepository = presenceRepository;
        }

        public IEnumerable<PresenceEntity> GetPresence(
            int groupId,
            int? subjectId = null,
            DateOnly? date = null,
            int? studentId = null)
        {
            return _presenceRepository.GetPresence(groupId, subjectId, date, studentId).Select(p => new PresenceEntity
            {
                Id = p.Id,
                StudentId = p.Student.Id,
                Student = new UserEntity
                {
                    Id = p.Student.Id,
                    FirstName = p.Student.FirstName,
                    LastName = p.Student.LastName,
                    Patronymic = p.Student.Patronymic,
                    Group = new GroupEntity()
                },
                SubjectId = p.StudentGroupSubject.Subject.Id,
                Subject = new SubjectEntity
                {
                    Id = p.StudentGroupSubject.Subject.Id,
                    Name = p.StudentGroupSubject.Subject.Name
                },
                TrafficId = p.TrafficId,
                Traffic = new TrafficEntity
                {
                    Id = p.TrafficId,
                    Name = p.Traffic.Name
                },
                LessonNumber = p.NumberSubject,
                Date = p.Date
            });
        }

        public void DeleteAllPresence()
        {
            _presenceRepository.DeleteAllPresence();
        }

        public void DeleteGroupPresence(int groupId)
        {
            _presenceRepository.DeleteGroupPresence(groupId);
        }

        public void AddPresenceRecords(AddPresenceRequest request)
        {
            if (request?.Items == null || request.Items.Count == 0)
                throw new ArgumentException("No records");

            List<Diary> diaries = new List<Diary>();

            foreach (var item in request.Items)
            {
                diaries.Add(new Diary
                {
                    Date = item.Date,
                    DiaryText = "",
                    NumberSubject = item.LessonNumber,
                    StudentId = item.StudentId,
                    TrafficId = item.TrafficId,
                    StudentGroupSubjectId = item.StudentGroupSubjectId
                });
            }

            _presenceRepository.AddPresenceRecords(diaries);
        }

        public void UpdatePresenceRecords(UpdatePresenceRequest request)
        {
            if (request?.Items == null || request.Items.Count == 0)
                throw new ArgumentException("No records");

            List<Diary> diaries = new List<Diary>();

            foreach (var item in request.Items)
            {
                diaries.Add(new Diary
                {
                    Date = item.Date,
                    NumberSubject = item.LessonNumber,
                    StudentId = item.StudentId,
                    TrafficId = item.TrafficId,
                });
            }

            _presenceRepository.UpdatePresenceRecords(diaries);
        }
    }
}