✨ Page data

DysonNetwork.Sphere/DysonNetwork.Sphere.csproj

@@ -41,6 +41,7 @@
         <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL.Design" Version="1.1.0"/>
         <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL.NetTopologySuite" Version="9.0.4"/>
         <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL.NodaTime" Version="9.0.4"/>
+        <PackageReference Include="OpenGraph-Net" Version="4.0.1" />
         <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.12.0"/>
         <PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.12.0"/>
         <PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.12.0"/>

DysonNetwork.Sphere/PageData/PostPageData.cs

@@ -0,0 +1,75 @@
+using System.Net;
+using DysonNetwork.Shared.PageData;
+using DysonNetwork.Shared.Proto;
+using DysonNetwork.Sphere.Post;
+using DysonNetwork.Sphere.Publisher;
+using Microsoft.EntityFrameworkCore;
+using OpenGraphNet;
+
+namespace DysonNetwork.Sphere.PageData;
+
+public class PostPageData(
+    AppDatabase db,
+    AccountService.AccountServiceClient accounts,
+    PublisherService pub,
+    PostService ps,
+    IConfiguration configuration
+)
+    : IPageDataProvider
+{
+    private readonly string _siteUrl = configuration["SiteUrl"]!;
+
+    public bool CanHandlePath(PathString path) =>
+        path.StartsWithSegments("/posts");
+
+    public async Task<IDictionary<string, object?>> GetAppDataAsync(HttpContext context)
+    {
+        var path = context.Request.Path.Value!;
+        var startIndex = "/posts/".Length;
+        var endIndex = path.IndexOf('/', startIndex);
+        var slug = endIndex == -1 ? path[startIndex..] : path.Substring(startIndex, endIndex - startIndex);
+        slug = WebUtility.UrlDecode(slug);
+
+        var postId = Guid.TryParse(slug, out var postIdGuid) ? postIdGuid : Guid.Empty;
+        if (postId == Guid.Empty) return new Dictionary<string, object?>();
+
+        context.Items.TryGetValue("CurrentUser", out var currentUserValue);
+        var currentUser = currentUserValue as Account;
+        List<Guid> userFriends = [];
+        if (currentUser != null)
+        {
+            var friendsResponse = await accounts.ListFriendsAsync(new ListRelationshipSimpleRequest
+                { AccountId = currentUser.Id });
+            userFriends = friendsResponse.AccountsId.Select(Guid.Parse).ToList();
+        }
+
+        var userPublishers = currentUser is null ? [] : await pub.GetUserPublishers(Guid.Parse(currentUser.Id));
+
+        var post = await db.Posts
+            .Where(e => e.Id == postId)
+            .Include(e => e.Publisher)
+            .Include(e => e.Tags)
+            .Include(e => e.Categories)
+            .FilterWithVisibility(currentUser, userFriends, userPublishers)
+            .FirstOrDefaultAsync();
+        post = await ps.LoadPostInfo(post, currentUser);
+
+        // Track view - use the account ID as viewer ID if user is logged in
+        await ps.IncreaseViewCount(post.Id, currentUser?.Id);
+
+        var og = OpenGraph.MakeGraph(
+            title: post.Title ?? $"Post from {post.Publisher.Name}",
+            type: "article",
+            image: $"{_siteUrl}/cgi/drive/files/{post.Publisher.Background?.Id}?original=true",
+            url: $"{_siteUrl}/@{slug}",
+            description: post.Description ?? post.Content?[..80] ?? "Posted with some media",
+            siteName: "Solar Network"
+        );
+
+        return new Dictionary<string, object?>()
+        {
+            ["Post"] = post,
+            ["OpenGraph"] = og
+        };
+    }
+}

DysonNetwork.Sphere/Program.cs

@@ -1,7 +1,9 @@
 using DysonNetwork.Shared.Auth;
 using DysonNetwork.Shared.Http;
+using DysonNetwork.Shared.PageData;
 using DysonNetwork.Shared.Registry;
 using DysonNetwork.Sphere;
+using DysonNetwork.Sphere.PageData;
 using DysonNetwork.Sphere.Startup;
 using Microsoft.EntityFrameworkCore;
 
@@ -33,6 +35,8 @@ builder.Services.AddAppBusinessServices(builder.Configuration);
 // Add scheduled jobs
 builder.Services.AddAppScheduledJobs();
 
+builder.Services.AddTransient<IPageDataProvider, PostPageData>();
+
 var app = builder.Build();
 
 // Run database migrations

DysonNetwork.Sphere/appsettings.json

@@ -1,6 +1,7 @@
 {
   "Debug": true,
   "BaseUrl": "http://localhost:5071",
+  "SiteUrl": "https://solian.app",
   "Logging": {
     "LogLevel": {
       "Default": "Information",