feat: use file kv-store for posts

.gitignore

@@ -34,6 +34,7 @@ bld/
 [Oo]bj/
 [Ll]og/
 [Ll]ogs/
+[Dd]ata/
 
 # Visual Studio 2015/2017 cache/options directory
 .vs/
@@ -482,3 +483,7 @@ $RECYCLE.BIN/
 
 # Vim temporary swap files
 *.swp
+
+*.sqlite
+*.sqlite-shm
+*.sqlite-wal

Needlework.Net/App.axaml.cs

@@ -1,3 +1,4 @@
+using Akavache;
 using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Controls.ApplicationLifetimes;
@@ -9,6 +10,7 @@ using Needlework.Net.ViewModels.MainWindow;
 using Needlework.Net.ViewModels.Pages;
 using Needlework.Net.Views.MainWindow;
 using System;
+using System.Reactive.Linq;
 using System.Reflection;
 using System.Text.Json;
 using System.Threading.Tasks;
@@ -59,6 +61,13 @@ public partial class App : Application, IEnableLogger
                 DataContext = _serviceProvider.GetRequiredService<MainWindowViewModel>()
             };
             MainWindow = desktop.MainWindow;
+
+            desktop.ShutdownRequested += (_, _) =>
+            {
+                var blobCache = _serviceProvider.GetRequiredService<IBlobCache>();
+                blobCache.Flush().Wait();
+                blobCache.Dispose();
+            };
         }
 
         base.OnFrameworkInitializationCompleted();

Needlework.Net/Needlework.Net.csproj

@@ -17,6 +17,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="akavache" Version="10.2.41" />
     <PackageReference Include="AngleSharp" Version="1.3.0" />
     <PackageReference Include="Avalonia" Version="11.2.8" />
     <PackageReference Include="Avalonia.AvaloniaEdit" Version="11.3.0" />

Needlework.Net/Program.cs

@@ -1,4 +1,6 @@
-using Avalonia;
+using Akavache;
+using Akavache.Sqlite3;
+using Avalonia;
 using Avalonia.Controls.Templates;
 using Flurl.Http.Configuration;
 using Microsoft.Extensions.DependencyInjection;
@@ -105,6 +107,11 @@ class Program
         builder.AddSingleton<NotificationService>();
         builder.AddSingleton<SchemaPaneService>();
         builder.AddSingleton<HextechDocsPostService>();
+        builder.AddSingleton<IBlobCache>((_) =>
+        {
+            Directory.CreateDirectory("Data");
+            return new SqlRawPersistentBlobCache("Data/data.sqlite");
+        });
         builder.AddSingleton<IFlurlClientCache>(new FlurlClientCache()
             .Add("GithubClient", "https://api.github.com")
             .Add("GithubUserContentClient", "https://raw.githubusercontent.com")

Needlework.Net/Services/HextechDocsPostService.cs

@@ -1,41 +1,49 @@
-using AngleSharp;
-using FastCache;
+using Akavache;
+using AngleSharp;
+using Needlework.Net.Extensions;
 using Needlework.Net.Models;
 using System;
 using System.Collections.Generic;
+using System.Reactive.Linq;
 using System.Threading.Tasks;
 
 namespace Needlework.Net.Services
 {
-    public class HextechDocsPostService
+    public class HextechDocsPostService : IEnableLogger
     {
         private readonly IBrowsingContext _context = BrowsingContext.New(Configuration.Default.WithDefaultLoader());
 
+        private readonly IBlobCache _blobCache;
+
+        public HextechDocsPostService(IBlobCache blobCache)
+        {
+            _blobCache = blobCache;
+        }
+
         public async Task<List<HextechDocsPost>> GetPostsAsync()
         {
-            if (Cached<List<HextechDocsPost>>.TryGet(nameof(GetPostsAsync), out var cached))
+            return await _blobCache.GetOrFetchObject("HextechDocsPosts", async () =>
             {
-                return cached;
-            }
-
-            var document = await _context.OpenAsync("https://hextechdocs.dev/tag/lcu/");
-            var elements = document.QuerySelectorAll("article.post-card");
-            var posts = new List<HextechDocsPost>();
-            foreach (var element in elements)
-            {
-                var path = element.QuerySelector("a.post-card-content-link")!.GetAttribute("href")!;
-                var title = element.QuerySelector(".post-card-title")!.TextContent;
-                var excerpt = element.QuerySelector(".post-card-excerpt > p")!.TextContent;
-                var post = new HextechDocsPost()
+                this.Log()
+                    .Debug("Downloading HextechDocs posts...");
+                var document = await _context.OpenAsync("https://hextechdocs.dev/tag/lcu/");
+                var elements = document.QuerySelectorAll("article.post-card");
+                var posts = new List<HextechDocsPost>();
+                foreach (var element in elements)
                 {
-                    Path = path,
-                    Title = title,
-                    Excerpt = excerpt,
-                };
-                posts.Add(post);
-            }
-
-            return cached.Save(posts, TimeSpan.FromMinutes(60));
+                    var path = element.QuerySelector("a.post-card-content-link")!.GetAttribute("href")!;
+                    var title = element.QuerySelector(".post-card-title")!.TextContent;
+                    var excerpt = element.QuerySelector(".post-card-excerpt > p")!.TextContent;
+                    var post = new HextechDocsPost()
+                    {
+                        Path = path,
+                        Title = title,
+                        Excerpt = excerpt,
+                    };
+                    posts.Add(post);
+                }
+                return posts;
+            }, DateTimeOffset.Now + TimeSpan.FromHours(12));
         }
     }
 }