using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Runtime.CompilerServices;

namespace Italia.DiciottoApp.ViewModels
{
    public class ObservableObject : INotifyPropertyChanged
    {
        protected virtual bool SetProperty<T>(ref T backingStore, T value, [CallerMemberName]string propertyName = "", Action onChanged = null, Func<T, T, bool> validateValue = null)
        {
            if (EqualityComparer<T>.Default.Equals(backingStore, value))
                return false;

            if (validateValue != null && !validateValue(backingStore, value))
                return false;

            backingStore = value;
            onChanged?.Invoke();
            OnPropertyChanged(propertyName);
            return true;
        }

        public event PropertyChangedEventHandler PropertyChanged;

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