NoteApp_MAUI/Model/Note.cs

using System.Collections.ObjectModel;
using System.ComponentModel;

namespace NoteApp.Model
{
    public class Note : INotifyPropertyChanged
    {
        private bool _pinned = false;
        private string _title = "";
        private string _content = "";
        private string _creationDate = "";
        private string _lastEditDate = "";
        private int _viewed = 0;

        public bool Pinned { get => _pinned; set { _pinned = value; OnPropertyChanged(nameof(Pinned)); } }
        public string Title { get => _title; set { _title = value; OnPropertyChanged(nameof(Title)); } }
        public string Content { get => _content; set { _content = value; OnPropertyChanged(nameof(Content)); } }
        public string CreationDate { get => _creationDate; set { _creationDate = value; OnPropertyChanged(nameof(CreationDate)); } }
        public string LastEditDate { get => _lastEditDate; set { _lastEditDate = value; OnPropertyChanged(nameof(LastEditDate)); } }
        public int Viewed { get => _viewed; set { _viewed = value; OnPropertyChanged(nameof(Viewed)); } }
        public ObservableCollection<string> Tags { get; set; } = [];

        public Note(){
            CreationDate = DateTime.Now.ToString("dd/MM/yyyy, HH:mm");
            LastEditDate = DateTime.Now.ToString("dd/MM/yyyy, HH:mm");
        }

        public void Update(string title, string content){
            Title = title;
            Content = content;
            LastEditDate = DateTime.Now.ToString("dd/MM/yyyy, HH:mm");
        }

        public void TogglePin(){
            Pinned = !Pinned;
        }

        public void View(){
            Viewed++;
        }

        public void AddTag(string tag){
            Tags.Add(tag);
        }

        public void RemoveTag(string tag){
            Tags.Remove(tag);
        }

        public event PropertyChangedEventHandler? PropertyChanged;
        public void OnPropertyChanged(string propertyName)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }
    }
}