⏪ Putting back the view mark flush handler

DysonNetwork.Sphere/Post/PostViewFlushHandler.cs

@@ -0,0 +1,52 @@
+using DysonNetwork.Shared.Cache;
+using Microsoft.EntityFrameworkCore;
+using Quartz;
+
+namespace DysonNetwork.Sphere.Post;
+
+public class PostViewFlushHandler(IServiceProvider serviceProvider) : IFlushHandler<PostViewInfo>
+{
+    public async Task FlushAsync(IReadOnlyList<Sphere.Post.PostViewInfo> items)
+    {
+        using var scope = serviceProvider.CreateScope();
+        var db = scope.ServiceProvider.GetRequiredService<AppDatabase>();
+        var cache = scope.ServiceProvider.GetRequiredService<ICacheService>();
+
+        // Group views by post
+        var postViews = items
+            .GroupBy(x => x.PostId)
+            .ToDictionary(g => g.Key, g => g.ToList());
+
+        // Calculate total views and unique views per post
+        foreach (var postId in postViews.Keys)
+        {
+            // Calculate unique views by distinct viewer IDs (not null)
+            var uniqueViews = postViews[postId]
+                .Where(v => !string.IsNullOrEmpty(v.ViewerId))
+                .Select(v => v.ViewerId)
+                .Distinct()
+                .Count();
+
+            // Total views is just the count of all items for this post
+            var totalViews = postViews[postId].Count;
+
+            // Update the post in the database
+            await db.Posts
+                .Where(p => p.Id == postId)
+                .ExecuteUpdateAsync(p => p
+                    .SetProperty(x => x.ViewsTotal, x => x.ViewsTotal + totalViews)
+                    .SetProperty(x => x.ViewsUnique, x => x.ViewsUnique + uniqueViews));
+
+            // Invalidate any cache entries for this post
+            await cache.RemoveAsync($"post:{postId}");
+        }
+    }
+}
+
+public class PostViewFlushJob(FlushBufferService fbs, PostViewFlushHandler hdl) : IJob
+{
+    public async Task Execute(IJobExecutionContext context)
+    {
+        await fbs.FlushAsync(hdl);
+    }
+}

DysonNetwork.Sphere/Startup/ScheduledJobsConfiguration.cs

@@ -1,3 +1,4 @@
+using DysonNetwork.Sphere.Post;
 using DysonNetwork.Sphere.WebReader;
 using Quartz;
 
@@ -16,15 +17,15 @@ public static class ScheduledJobsConfiguration
                 .WithIdentity("AppDatabaseRecyclingTrigger")
                 .WithCronSchedule("0 0 0 * * ?"));
 
-            // var postViewFlushJob = new JobKey("PostViewFlush");
-            // q.AddJob<PostViewFlushJob>(opts => opts.WithIdentity(postViewFlushJob));
-            // q.AddTrigger(opts => opts
-            //     .ForJob(postViewFlushJob)
-            //     .WithIdentity("PostViewFlushTrigger")
-            //     .WithSimpleSchedule(o => o
-            //         .WithIntervalInMinutes(1)
-            //         .RepeatForever())
-            // );
+            var postViewFlushJob = new JobKey("PostViewFlush");
+            q.AddJob<PostViewFlushJob>(opts => opts.WithIdentity(postViewFlushJob));
+            q.AddTrigger(opts => opts
+                .ForJob(postViewFlushJob)
+                .WithIdentity("PostViewFlushTrigger")
+                .WithSimpleSchedule(o => o
+                    .WithIntervalInMinutes(1)
+                    .RepeatForever())
+            );
 
             var webFeedScraperJob = new JobKey("WebFeedScraper");
             q.AddJob<WebFeedScraperJob>(opts => opts.WithIdentity(webFeedScraperJob));

DysonNetwork.Sphere/Startup/ServiceCollectionExtensions.cs

@@ -143,6 +143,7 @@ public static class ServiceCollectionExtensions
     public static IServiceCollection AddAppFlushHandlers(this IServiceCollection services)
     {
         services.AddSingleton<FlushBufferService>();
+        services.AddScoped<PostViewFlushHandler>();
 
         return services;
     }