public void DoExercise(Person person, ExerciseType type, double hours)
{
if (person == null)
{
throw new ArgumentNullException("Person argument is null");
}
if (_people.FirstOrDefault(p => p == person) == null)
{
Console.WriteLine("User not found.");
return;
}
var result = new Result
{
Date = DateTime.Now,
Type = type,
Calories = _exerciseManager.Exercise(type, hours, person.Weight)
};
person.CaloriesPerDay.Add(result);
}