namespace Starter_assignment;

class Student {
    private string Name { get; }
    private int StudentNumber { get; }
    private string GroupName { get; }
    
    public Student(string name, int studentNumber, string groupName) {
        if (string.IsNullOrWhiteSpace(name)) {
            throw new ArgumentException("Name cannot be empty.");
        }
        if (studentNumber < 10000 && studentNumber != -1) {
            throw new ArgumentException("Student number must be >= 10000 or -1.");
        }
        
        Name = name;
        StudentNumber = studentNumber;
        GroupName = groupName;
    }

    public int GetStudentNumber() {
        return StudentNumber;
    }
    public string GetInfo() {
        return $"{Name} ({StudentNumber}) - {GroupName}";
    }
}