- tweak: Big refactoring of hub and file content overview

Nebula.Launcher/ServerListProviders/HubServerListProvider.cs

@@ -0,0 +1,85 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using Microsoft.Extensions.DependencyInjection;
+using Nebula.Launcher.ViewModels;
+using Nebula.Launcher.ViewModels.Pages;
+using Nebula.Shared;
+using Nebula.Shared.Models;
+using Nebula.Shared.Services;
+using Nebula.Shared.Utils;
+
+namespace Nebula.Launcher.ServerListProviders;
+
+[ServiceRegister(null, false), ConstructGenerator]
+public sealed partial class HubServerListProvider : IServerListProvider
+{
+    [GenerateProperty] private RestService RestService { get; }
+    [GenerateProperty] private ServerViewContainer ServerViewContainer { get; }
+    
+    public string HubUrl { get; set; }
+    
+    public bool IsLoaded { get; private set; }
+    public Action? OnLoaded { get; set; }
+
+    private CancellationTokenSource? _cts;
+    private readonly List<ServerEntryModelView> _servers = [];
+    private readonly List<Exception> _errors = [];
+
+    public HubServerListProvider With(string hubUrl)
+    {
+        HubUrl = hubUrl;
+        return this;
+    }
+    
+    public IEnumerable<IFilterConsumer> GetServers()
+    {
+        return _servers;
+    }
+
+    public IEnumerable<Exception> GetErrors()
+    {
+        return _errors;
+    }
+
+    public async void LoadServerList()
+    {
+        if (_cts != null)
+        {
+            await _cts.CancelAsync();
+            _cts = null;
+        }
+        
+        _servers.Clear();
+        _errors.Clear();
+        IsLoaded = false;
+        _cts = new CancellationTokenSource();
+
+        try
+        {
+            var servers =
+                await RestService.GetAsync<List<ServerHubInfo>>(new Uri(HubUrl), _cts.Token);
+        
+            servers.Sort(new ServerComparer());
+        
+            if(_cts.Token.IsCancellationRequested) return;
+        
+            _servers.AddRange(
+                servers.Select(h=> 
+                    ServerViewContainer.Get(h.Address.ToRobustUrl(), h.StatusData)
+                )
+            );
+        }
+        catch (Exception e)
+        {
+            _errors.Add(new Exception($"Some error while loading server list from {HubUrl}. See inner exception", e));
+        }
+        
+        IsLoaded = true;
+        OnLoaded?.Invoke();
+    }
+    
+    private void Initialise(){}
+    private void InitialiseInDesignMode(){}
+}