Re-enabled caching

Author: thedillonb

CodeHub.Core/Services/ApplicationService.cs

@@ -7,6 +7,7 @@
 using CodeHub.Core.ViewModels;
 using CodeHub.Core.ViewModels.App;
 using GitHubSharp;
+using System.Linq;
 
 namespace CodeHub.Core.Services
 {
@@ -32,8 +33,63 @@ public void ActivateUser(GitHubAccount account, Client client)
 			//Set the default account
 			Accounts.SetDefault(account);
 
+			//Check the cache size
+			CheckCacheSize(account.Cache);
+
+			Client.Cache = new GitHubCache(account);
+
             // Show the menu & show a page on the slideout
             _viewDispatcher.ShowViewModel(new MvxViewModelRequest {ViewModelType = typeof (MenuViewModel)});
         }
+
+		private static void CheckCacheSize(CodeFramework.Core.Data.AccountCache cache)
+		{
+			var totalCacheSize = cache.Sum(x => System.IO.File.Exists(x.Path) ? new System.IO.FileInfo(x.Path).Length : 0);
+			var totalCacheSizeMB = ((float)totalCacheSize / 1024f / 1024f);
+
+			if (totalCacheSizeMB > 1)
+			{
+				System.Console.WriteLine("Flushing cache due to size...");
+				cache.DeleteAll();
+			}
+		}
+
+		private class GitHubCache : ICache
+		{
+			private readonly CodeFramework.Core.Data.AccountCache _account;
+			public GitHubCache(GitHubAccount account)
+			{
+				_account = account.Cache;
+			}
+
+			public string GetETag(string url)
+			{
+				var data = _account.GetEntry(url);
+				if (data == null)
+					return null;
+				return data.CacheTag;
+			}
+
+			public T Get<T>(string url) where T : new()
+			{
+				var data = _account.Get<T>(url);
+				if (data == null)
+					return default(T);
+
+				System.Console.WriteLine("[GET] cache: {0}", url);
+				return data;
+			}
+
+			public void Set(string url, object data, string etag)
+			{
+				System.Console.WriteLine("[SET] cache: {0}", url);
+				_account.Set(url, data, etag);
+			}
+
+			public bool Exists(string url)
+			{
+				return _account.GetEntry(url) != null;
+			}
+		}
     }
 }

CodeHub.Core/ViewModels/App/SettingsViewModel.cs

@@ -1,7 +1,7 @@
 using CodeFramework.Core.ViewModels;
 using System.Windows.Input;
-using CodeFramework.Core.ViewModels.App;
 using Cirrious.MvvmCross.ViewModels;
+using System.Linq;
 
 namespace CodeHub.Core.ViewModels.App
 {
@@ -16,5 +16,29 @@ public ICommand GoToDefaultStartupViewCommand
 		{
 			get { return new MvxCommand(() => ShowViewModel<DefaultStartupViewModel>()); }
 		}
+
+		public ICommand DeleteAllCacheCommand
+		{
+			get { return new MvxCommand(DeleteCache); }
+		}
+
+		private void DeleteCache()
+		{
+			if (this.GetApplication().Account.Cache != null)
+				this.GetApplication().Account.Cache.DeleteAll();
+		}
+
+		public float CacheSize
+		{
+			get
+			{
+				if (this.GetApplication().Account.Cache == null)
+					return 0f;
+
+				var totalCacheSize = this.GetApplication().Account.Cache.Sum(x => System.IO.File.Exists(x.Path) ? new System.IO.FileInfo(x.Path).Length : 0);
+				var totalCacheSizeMB = ((float)totalCacheSize / 1024f / 1024f);
+				return totalCacheSizeMB;
+			}
+		}
     }
 }

CodeHub.iOS/Views/App/SettingsView.cs

@@ -61,19 +61,15 @@ public override void ViewWillAppear(bool animated)
 //                })
 //            });
 
-//            if (Application.ClientCache != null)
-//            {
-//                var totalCacheSize = Application.ClientCache.Sum(x => System.IO.File.Exists(x.Path) ? new System.IO.FileInfo(x.Path).Length : 0);
-//                var totalCacheSizeMB = ((float)totalCacheSize / 1024f / 1024f).ToString("0.##");
-//                var cacheSection = new Section(string.Empty, string.Format("{0} MB of cache".t(), totalCacheSizeMB)); 
-//                cacheSection.Add(new StyledStringElement("Delete Cache".t(), () =>
-//                { 
-//                    Application.ClientCache.DeleteAll();
-//                    cacheSection.Footer = string.Format("{0} MB of cache".t(), 0);
-//                    ReloadData();
-//                }));
-//                root.Add(cacheSection);
-//            }
+			var totalCacheSizeMB = vm.CacheSize.ToString("0.##");
+			var cacheSection = new Section(string.Empty, string.Format("{0} MB of cache used".t(), totalCacheSizeMB)); 
+            cacheSection.Add(new StyledStringElement("Delete Cache".t(), () =>
+            { 
+				vm.DeleteAllCacheCommand.Execute(null);
+				cacheSection.Footer = string.Format("{0} MB of cache used".t(), 0);
+                ReloadData();
+            }));
+            root.Add(cacheSection);
 
 			//Assign the root
 			Root = root;