erp-platform/api/src/Kurs.Platform.Domain/Classroom/ClassAttandance.cs

using System;
using Volo.Abp.Domain.Entities.Auditing;

namespace Kurs.Platform.Entities;

public class ClassAttandance : FullAuditedEntity<Guid>
{
    public Guid SessionId { get; set; }
    public Guid? StudentId { get; set; }
    public string StudentName { get; set; }
    public DateTime JoinTime { get; set; }
    public DateTime? LeaveTime { get; set; }
    public int TotalDurationMinutes { get; set; }

    // Navigation properties
    public virtual Classroom Session { get; set; }

    protected ClassAttandance()
    {
    }

    public ClassAttandance(
        Guid id,
        Guid sessionId,
        Guid? studentId,
        string studentName,
        DateTime joinTime
    ) : base(id)
    {
        SessionId = sessionId;
        StudentId = studentId;
        StudentName = studentName;
        JoinTime = joinTime;
        TotalDurationMinutes = 0;
    }

    public void CalculateDuration()
    {
        if (LeaveTime.HasValue)
        {
            var duration = LeaveTime.Value - JoinTime;
            TotalDurationMinutes = (int)duration.TotalMinutes;
        }
        else
        {
            var duration = DateTime.UtcNow - JoinTime;
            TotalDurationMinutes = (int)duration.TotalMinutes;
        }
    }
}