using Demo.Data.LocalData;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Demo.Domain.Presence
{

    public class UseCaseGeneratePresence
    { 
            public List<AttendanceRecord> GenerateDailyAttendance(int firstLesson, int lastLesson, string groupNumber, DateTime currentDate)
            {
                List<AttendanceRecord> attendanceRecords = new List<AttendanceRecord>();

                // Проверка на корректность входных данных
                if (firstLesson < 1 || lastLesson < firstLesson)
                {
                    throw new ArgumentException("Неверные номера уроков.");
                }

                for (int lesson = firstLesson; lesson <= lastLesson; lesson++)
                {
                    attendanceRecords.Add(new AttendanceRecord
                    {
                        LessonNumber = lesson,
                        GroupNumber = groupNumber,
                        Date = currentDate,
                        IsPresent = true 
                    });
                }

                return attendanceRecords;
            }

            public List<AttendanceRecord> GenerateWeeklyAttendance(int firstLesson, int lastLesson, string groupNumber, DateTime startDate)
            {
                List<AttendanceRecord> weeklyAttendanceRecords = new List<AttendanceRecord>();

                // Проверка на корректность входных данных
                if (firstLesson < 1 || lastLesson < firstLesson)
                {
                    throw new ArgumentException("Неверные номера уроков.");
                }

                for (int day = 0; day < 7; day++)
                {
                    DateTime currentDate = startDate.AddDays(day);
                    weeklyAttendanceRecords.AddRange(GenerateDailyAttendance(firstLesson, lastLesson, groupNumber, currentDate));
                }

                return weeklyAttendanceRecords;
            }

        public class AttendanceRecord 
        {
            public int LessonNumber { get; set; }
            public string GroupNumber { get; set; }
            public DateTime Date { get; set; }
            public bool IsPresent { get; set; }
        }
    }
}