Adding functionality to refresh user repository list

Author: StanleyGoldman

src/GitHub.App/SampleData/Dialog/Clone/SelectPageViewModelDesigner.cs

@@ -2,11 +2,13 @@
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Linq;
+using System.Reactive;
 using System.Threading.Tasks;
 using System.Windows.Data;
 using GitHub.Models;
 using GitHub.ViewModels;
 using GitHub.ViewModels.Dialog.Clone;
+using ReactiveUI;
 
 namespace GitHub.SampleData.Dialog.Clone
 {
@@ -39,6 +41,7 @@ public SelectPageViewModelDesigner()
         public ICollectionView ItemsView { get; }
         public IRepositoryItemViewModel SelectedItem { get; set; }
         public RepositoryModel Repository { get; }
+        public ReactiveCommand<Unit, Unit> Refresh { get; }
 
         public void Initialize(IConnection connection)
         {

src/GitHub.App/Services/RepositoryCloneService.cs

@@ -64,7 +64,7 @@ public RepositoryCloneService(
         }
 
         /// <inheritdoc/>
-        public async Task<ViewerRepositoriesModel> ReadViewerRepositories(HostAddress address)
+        public async Task<ViewerRepositoriesModel> ReadViewerRepositories(HostAddress address, bool refresh = false)
         {
             if (readViewerRepositories == null)
             {
@@ -107,7 +107,7 @@ public async Task<ViewerRepositoriesModel> ReadViewerRepositories(HostAddress ad
             }
 
             var graphql = await graphqlFactory.CreateConnection(address).ConfigureAwait(false);
-            var result = await graphql.Run(readViewerRepositories).ConfigureAwait(false);
+            var result = await graphql.Run(readViewerRepositories, cacheDuration: TimeSpan.FromHours(1), refresh: refresh).ConfigureAwait(false);
             return result;
         }
 

src/GitHub.App/ViewModels/Dialog/Clone/RepositorySelectViewModel.cs

@@ -4,6 +4,7 @@
 using System.ComponentModel.Composition;
 using System.Globalization;
 using System.Linq;
+using System.Reactive;
 using System.Reactive.Linq;
 using System.Threading.Tasks;
 using System.Windows.Data;
@@ -30,7 +31,6 @@ public class RepositorySelectViewModel : ViewModelBase, IRepositorySelectViewMod
         string filter;
         bool isEnabled;
         bool isLoading;
-        bool loadingStarted;
         IReadOnlyList<IRepositoryItemViewModel> items;
         ICollectionView itemsView;
         ObservableAsPropertyHelper<RepositoryModel> repository;
@@ -57,6 +57,12 @@ public RepositorySelectViewModel(IRepositoryCloneService service, IGitHubContext
                 .ToProperty(this, x => x.Repository);
 
             this.WhenAnyValue(x => x.Filter).Subscribe(_ => ItemsView?.Refresh());
+
+            Refresh = ReactiveCommand.CreateFromTask(async () =>
+            {
+                await this.LoadItems(true);
+                return Unit.Default;
+            });
         }
 
         public Exception Error
@@ -101,6 +107,8 @@ public IRepositoryItemViewModel SelectedItem
             set => this.RaiseAndSetIfChanged(ref selectedItem, value);
         }
 
+        public ReactiveCommand<Unit, Unit> Refresh { get; }
+
         public RepositoryModel Repository => repository.Value;
 
         public void Initialize(IConnection connection)
@@ -111,18 +119,36 @@ public void Initialize(IConnection connection)
             IsEnabled = true;
         }
 
-        public async Task Activate()
+        public async Task Activate() => this.LoadItems(false);
+
+        static string GroupName(KeyValuePair<string, IReadOnlyList<RepositoryListItemModel>> group, int max)
+        {
+            var name = group.Key;
+            if (group.Value.Count == max)
+            {
+                name += $" ({string.Format(CultureInfo.InvariantCulture, Resources.MostRecentlyPushed, max)})";
+            }
+
+            return name;
+        }
+
+        async Task LoadItems(bool refresh)
         {
-            if (connection == null || loadingStarted) return;
+            if (connection == null && !IsLoading) return;
 
             Error = null;
             IsLoading = true;
-            loadingStarted = true;
 
             try
             {
+                if (refresh)
+                {
+                    Items = new List<IRepositoryItemViewModel>();
+                    ItemsView = CollectionViewSource.GetDefaultView(Items);
+                }
+
                 var results = await log.TimeAsync(nameof(service.ReadViewerRepositories),
-                    () => service.ReadViewerRepositories(connection.HostAddress));
+                    () => service.ReadViewerRepositories(connection.HostAddress, refresh));
 
                 var yourRepositories = results.Repositories
                     .Where(r => r.Owner == results.Owner)
@@ -163,17 +189,6 @@ public async Task Activate()
             }
         }
 
-        static string GroupName(KeyValuePair<string, IReadOnlyList<RepositoryListItemModel>> group, int max)
-        {
-            var name = group.Key;
-            if (group.Value.Count == max)
-            {
-                name += $" ({string.Format(CultureInfo.InvariantCulture, Resources.MostRecentlyPushed, max)})";
-            }
-
-            return name;
-        }
-
         bool FilterItem(object obj)
         {
             if (obj is IRepositoryItemViewModel item && !string.IsNullOrWhiteSpace(Filter))

src/GitHub.Exports.Reactive/Services/IRepositoryCloneService.cs

@@ -67,6 +67,6 @@ Task CloneOrOpenRepository(
         /// </returns>
         bool DestinationFileExists(string path);
 
-        Task<ViewerRepositoriesModel> ReadViewerRepositories(HostAddress address);
+        Task<ViewerRepositoriesModel> ReadViewerRepositories(HostAddress address, bool refresh = false);
     }
 }

src/GitHub.Exports.Reactive/ViewModels/Dialog/Clone/IRepositorySelectViewModel.cs

@@ -1,8 +1,10 @@
 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
+using System.Reactive;
 using System.Threading.Tasks;
 using GitHub.Models;
+using ReactiveUI;
 
 namespace GitHub.ViewModels.Dialog.Clone
 {
@@ -14,6 +16,7 @@ public interface IRepositorySelectViewModel : IRepositoryCloneTabViewModel
         IReadOnlyList<IRepositoryItemViewModel> Items { get; }
         ICollectionView ItemsView { get; }
         IRepositoryItemViewModel SelectedItem { get; set; }
+        ReactiveCommand<Unit, Unit> Refresh { get; }
 
         void Initialize(IConnection connection);
     }

src/GitHub.VisualStudio.UI/Views/Dialog/Clone/SelectPageView.xaml

@@ -21,11 +21,11 @@
     </UserControl.Resources>
 
     <DockPanel>
-        <ghfvs:PromptTextBox DockPanel.Dock="Top"
-                             Margin="0,4"
-                             PromptText="Search or enter a URL"
-                             Text="{Binding Filter, UpdateSourceTrigger=PropertyChanged, Delay=300}"/>
-
+        <DockPanel DockPanel.Dock="Top" Margin="0,4">
+            <Button DockPanel.Dock="Right" Command="{Binding Refresh}">Refresh</Button>
+            <ghfvs:PromptTextBox PromptText="Search or enter a URL"
+                                 Text="{Binding Filter, UpdateSourceTrigger=PropertyChanged, Delay=300}"/>
+        </DockPanel>
         <Grid>
             <ListView BorderThickness="0"
                       ItemsSource="{Binding ItemsView}"