sa/Stars Assistant/Services/PlanetManager.cs

42 lines
1.3 KiB
C#

using System;
using System.ComponentModel;
using System.Reactive.Linq;
using DynamicData;
using DynamicData.Binding;
using Splat;
using StarsAssistant.Model;
using StarsAssistant.ViewModels;
namespace StarsAssistant.Services;
public class PlanetManager
{
protected Services.Game Game = Locator.Current.GetService<Services.Game>()!;
/// <summary>
/// SourceCache for DynamicData views
/// </summary>
private SourceCache<Planet, string> _planets = new(p => p.Name);
/// <summary>
/// Observable changeset showing all player planets converted to view models.
/// </summary>
public IObservable<IChangeSet<PlayerPlanetViewModel, string>> PlayerPlanetsSource
=> _planets
.Connect()
.Filter(planet => planet.OwnerId == Game.Player.Name)
.Transform(planet => new PlayerPlanetViewModel(planet));
public PlanetManager() {}
/// <summary>
/// Load the planet records from the database and push them into our source cache.
/// </summary>
public void InitFromDatabase()
{
using var db = Locator.Current.GetService<StarsDatabase>()!;
var allPlanets = db.Planet.ToList();
_planets.AddOrUpdate(allPlanets);
}
}