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

namespace Zurnal.Presence
{
    internal class UseCaseGeneratePresence
    {
        internal class AttendanceRecord
    {
        public int LessonNumber { get; set; }
        public string GroupNumber { get; set; }
        public DateTime Date { get; set; }
        public bool IsPresent { get; set; }
    }
        public List<AttendanceRecord> GenerateDailyAttendance(int firstLesson, int lastLesson, string groupNumber, DateTime currentDate)
        {
            List<AttendanceRecord> attendanceRecords = new List<AttendanceRecord>();

            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>();

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

            return weeklyAttendanceRecords;
        }
    }
}