using System.ComponentModel;
using System.Runtime.CompilerServices;

namespace FieldVisualizer.ViewModels
{
    public class ViewModelBase : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;

        protected virtual void OnPropertyChanged<T>(T value, T prop, [CallerMemberName] string propertyName = null)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }

        protected virtual void OnPropertyChanged<T>(T value, ref T prop, [CallerMemberName] string propertyName = null)
        {
            prop = value;
            OnPropertyChanged(propertyName);
        }

        protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
            => PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));

        protected bool SetProperty<T>(ref T field, T newValue, [CallerMemberName] string propertyName = null)
        {
            if (!Equals(field, newValue))
            {
                field = newValue;
                PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
                return true;
            }

            return false;
        }
    }
}