using System.Collections.ObjectModel;
using System.Text.Json;
using NoteApp.Model;

namespace NoteApp.Service;

public class FileService {
    private readonly string _fileName;
    public FileService(){
        _fileName = Path.Combine(FileSystem.AppDataDirectory, "notes.json");
    }

    public async Task<ObservableCollection<Note>> LoadNotes(){
        if(!File.Exists(_fileName))
            return [];
        
        var json = await File.ReadAllTextAsync(_fileName);
        return JsonSerializer.Deserialize<ObservableCollection<Note>>(json) ?? [];
    }

    public async Task SaveNotes(ObservableCollection<Note> notes){
        var json = JsonSerializer.Serialize(notes);
        await File.WriteAllTextAsync(_fileName, json);
    }
}