🗃️ Realm database modeling

DysonNetwork.Sphere/Activity/Activity.cs

@@ -1,4 +1,5 @@
 using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
 
 namespace DysonNetwork.Sphere.Activity;
 
@@ -6,6 +7,7 @@ public enum ActivityVisibility
 {
     Public,
     Friends,
+    Selected
 }
 
 public class Activity : ModelBase
@@ -14,8 +16,11 @@ public class Activity : ModelBase
     [MaxLength(1024)] public string Type { get; set; } = null!;
     [MaxLength(4096)] public string ResourceIdentifier { get; set; } = null!;
     public ActivityVisibility Visibility { get; set; } = ActivityVisibility.Public;
-    public Dictionary<string, object> Meta =  new();
-    
+    [Column(TypeName = "jsonb")] public Dictionary<string, object> Meta = new();
+    [Column(TypeName = "jsonb")] public ICollection<long> UsersVisible = new List<long>();
+
     public long AccountId { get; set; }
     public Account.Account Account { get; set; } = null!;
+
+    [NotMapped] public object? Data { get; set; }
 }

DysonNetwork.Sphere/Activity/ActivityController.cs

@@ -13,21 +13,22 @@ public class ActivityController(AppDatabase db, ActivityService act, Relationshi
     {
         HttpContext.Items.TryGetValue("CurrentUser", out var currentUserValue);
         var currentUser = currentUserValue as Account.Account;
-        var userFriends = await rels.ListAccountFriends(currentUser!);
+        var userFriends = currentUser is null ? null : await rels.ListAccountFriends(currentUser);
 
         var totalCount = await db.Activities
             .FilterWithVisibility(currentUser, userFriends)
             .CountAsync();
-        var posts = await db.Activities
+        var activities = await db.Activities
             .Include(e => e.Account)
             .FilterWithVisibility(currentUser, userFriends)
             .OrderByDescending(e => e.CreatedAt)
             .Skip(offset)
             .Take(take)
             .ToListAsync();
+        activities = await act.LoadActivityData(activities, currentUser, userFriends);
 
         Response.Headers["X-Total"] = totalCount.ToString();
 
-        return Ok(posts); 
+        return Ok(activities); 
     }
 }

DysonNetwork.Sphere/Activity/ActivityService.cs

@@ -1,15 +1,60 @@
 using DysonNetwork.Sphere.Post;
+using Microsoft.EntityFrameworkCore;
 using NodaTime;
 
 namespace DysonNetwork.Sphere.Activity;
 
 public class ActivityService(AppDatabase db)
 {
+    public async Task<List<Activity>> LoadActivityData(List<Activity> input, Account.Account? currentUser,
+        List<long> userFriends)
+    {
+        if (input.Count == 0) return input;
+
+        var postsId = input
+            .Where(e => e.ResourceIdentifier.StartsWith("posts/"))
+            .Select(e => long.Parse(e.ResourceIdentifier.Split("/").Last()))
+            .Distinct()
+            .ToList();
+
+        if (postsId.Count > 0)
+        {
+            var posts = await db.Posts.Where(e => postsId.Contains(e.Id))
+                .Include(e => e.Publisher)
+                .Include(e => e.Publisher.Picture)
+                .Include(e => e.Publisher.Background)
+                .Include(e => e.ThreadedPost)
+                .Include(e => e.ForwardedPost)
+                .Include(e => e.Attachments)
+                .Include(e => e.Categories)
+                .Include(e => e.Tags)
+                .FilterWithVisibility(currentUser, userFriends)
+                .ToListAsync();
+            posts = PostService.TruncatePostContent(posts);
+
+            var postsDict = posts.ToDictionary(p => p.Id);
+
+            for (var idx = 0; idx < input.Count; idx++)
+            {
+                var resourceIdentifier = input[idx].ResourceIdentifier;
+                if (!resourceIdentifier.StartsWith("posts/")) continue;
+                var postId = long.Parse(resourceIdentifier.Split("/").Last());
+                if (postsDict.TryGetValue(postId, out var post) && input[idx].Data is null)
+                {
+                    input[idx].Data = post;
+                }
+            }
+        }
+
+        return input;
+    }
+
     public async Task<Activity> CreateActivity(
         Account.Account user,
         string type,
         string identifier,
-        ActivityVisibility visibility = ActivityVisibility.Public
+        ActivityVisibility visibility = ActivityVisibility.Public,
+        List<long>? visibleUsers = null
     )
     {
         var activity = new Activity
@@ -18,6 +63,7 @@ public class ActivityService(AppDatabase db)
             ResourceIdentifier = identifier,
             Visibility = visibility,
             AccountId = user.Id,
+            UsersVisible = visibleUsers ?? []
         };
 
         db.Activities.Add(activity);
@@ -31,8 +77,26 @@ public class ActivityService(AppDatabase db)
         if (post.Visibility is PostVisibility.Unlisted or PostVisibility.Private) return;
 
         var identifier = $"posts/{post.Id}";
-        await CreateActivity(user, "posts.new", identifier,
-            post.Visibility == PostVisibility.Friends ? ActivityVisibility.Friends : ActivityVisibility.Public);
+        if (post.RepliedPostId is not null)
+        {
+            var ogPost = await db.Posts.Where(e => e.Id == post.RepliedPostId).Include(e => e.Publisher)
+                .FirstOrDefaultAsync();
+            if (ogPost == null) return;
+            await CreateActivity(
+                user,
+                "posts.new.replies",
+                identifier,
+                ActivityVisibility.Selected,
+                [ogPost.Publisher.AccountId!.Value]
+            );
+        }
+
+        await CreateActivity(
+            user,
+            "posts.new",
+            identifier,
+            post.Visibility == PostVisibility.Friends ? ActivityVisibility.Friends : ActivityVisibility.Public
+        );
     }
 }
 
@@ -41,14 +105,13 @@ public static class ActivityQueryExtensions
     public static IQueryable<Activity> FilterWithVisibility(this IQueryable<Activity> source,
         Account.Account? currentUser, List<long> userFriends)
     {
-        var now = Instant.FromDateTimeUtc(DateTime.UtcNow);
-
         if (currentUser is null)
             return source.Where(e => e.Visibility == ActivityVisibility.Public);
 
         return source
             .Where(e => e.Visibility != ActivityVisibility.Friends ||
                         userFriends.Contains(e.AccountId) ||
-                        e.AccountId == currentUser.Id);
+                        e.AccountId == currentUser.Id)
+            .Where(e => e.Visibility != ActivityVisibility.Selected || e.UsersVisible.Contains(currentUser.Id));
     }
 }

DysonNetwork.Sphere/AppDatabase.cs

@@ -20,11 +20,11 @@ public class AppDatabase(
     IConfiguration configuration
 ) : DbContext(options)
 {
-    public DbSet<PermissionNode> PermissionNodes { get; set; } = null!;
-    public DbSet<PermissionGroup> PermissionGroups { get; set; } = null!;
-    public DbSet<PermissionGroupMember> PermissionGroupMembers { get; set; } = null!;
+    public DbSet<PermissionNode> PermissionNodes { get; set; }
+    public DbSet<PermissionGroup> PermissionGroups { get; set; }
+    public DbSet<PermissionGroupMember> PermissionGroupMembers { get; set; }
 
-    public DbSet<Account.MagicSpell> MagicSpells { get; set; } = null!;
+    public DbSet<Account.MagicSpell> MagicSpells { get; set; }
     public DbSet<Account.Account> Accounts { get; set; }
     public DbSet<Account.Profile> AccountProfiles { get; set; }
     public DbSet<Account.AccountContact> AccountContacts { get; set; }
@@ -48,6 +48,9 @@ public class AppDatabase(
     public DbSet<Post.PostCategory> PostCategories { get; set; }
     public DbSet<Post.PostCollection> PostCollections { get; set; }
 
+    public DbSet<Realm.Realm> Realms { get; set; }
+    public DbSet<Realm.RealmMember> RealmMembers { get; set; }
+
     protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
     {
         var dataSourceBuilder = new NpgsqlDataSourceBuilder(configuration.GetConnectionString("App"));
@@ -154,19 +157,30 @@ public class AppDatabase(
             .HasMany(p => p.Collections)
             .WithMany(c => c.Posts)
             .UsingEntity(j => j.ToTable("post_collection_links"));
+        
+        modelBuilder.Entity<Realm.RealmMember>()
+            .HasKey(pm => new { pm.RealmId, pm.AccountId });
+        modelBuilder.Entity<Realm.RealmMember>()
+            .HasOne(pm => pm.Realm)
+            .WithMany(p => p.Members)
+            .HasForeignKey(pm => pm.RealmId)
+            .OnDelete(DeleteBehavior.Cascade);
+        modelBuilder.Entity<Post.PublisherMember>()
+            .HasOne(pm => pm.Account)
+            .WithMany()
+            .HasForeignKey(pm => pm.AccountId)
+            .OnDelete(DeleteBehavior.Cascade);
 
         // Automatically apply soft-delete filter to all entities inheriting BaseModel
         foreach (var entityType in modelBuilder.Model.GetEntityTypes())
         {
-            if (typeof(ModelBase).IsAssignableFrom(entityType.ClrType))
-            {
-                var method = typeof(AppDatabase)
-                    .GetMethod(nameof(SetSoftDeleteFilter),
-                        System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Static)!
-                    .MakeGenericMethod(entityType.ClrType);
+            if (!typeof(ModelBase).IsAssignableFrom(entityType.ClrType)) continue;
+            var method = typeof(AppDatabase)
+                .GetMethod(nameof(SetSoftDeleteFilter),
+                    System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Static)!
+                .MakeGenericMethod(entityType.ClrType);
 
-                method.Invoke(null, [modelBuilder]);
-            }
+            method.Invoke(null, [modelBuilder]);
         }
     }
 

DysonNetwork.Sphere/Permission/PermissionService.cs

@@ -23,7 +23,7 @@ public class PermissionService(AppDatabase db)
             .ToListAsync();
         var permission = await db.PermissionNodes
             .Where(n => n.GroupId == null || groupsId.Contains(n.GroupId.Value))
-            .Where(n => n.Key == key && (n.GroupId != null || n.Actor == actor) && n.Area == area)
+            .Where(n => (n.Key == key || n.Key == "*") && (n.GroupId != null || n.Actor == actor) && n.Area == area)
             .Where(n => n.ExpiredAt == null || n.ExpiredAt < now)
             .Where(n => n.AffectedAt == null || n.AffectedAt >= now)
             .FirstOrDefaultAsync();

DysonNetwork.Sphere/Post/Post.cs

@@ -51,7 +51,7 @@ public class Post : ModelBase
     public Post? ForwardedPost { get; set; }
     public ICollection<CloudFile> Attachments { get; set; } = new List<CloudFile>();
     
-    public NpgsqlTsVector SearchVector { get; set; }
+    [JsonIgnore] public NpgsqlTsVector SearchVector { get; set; }
 
     public Publisher Publisher { get; set; } = null!;
     public ICollection<PostReaction> Reactions { get; set; } = new List<PostReaction>();
@@ -59,7 +59,8 @@ public class Post : ModelBase
     public ICollection<PostCategory> Categories { get; set; } = new List<PostCategory>();
     public ICollection<PostCollection> Collections { get; set; } = new List<PostCollection>();
 
-    public bool Empty => Content == null && Attachments.Count == 0 && ForwardedPostId == null;
+    [JsonIgnore] public bool Empty => Content == null && Attachments.Count == 0 && ForwardedPostId == null;
+    [NotMapped] public bool IsTruncated = false;
 }
 
 public class PostTag : ModelBase

DysonNetwork.Sphere/Post/PostController.cs

@@ -38,6 +38,7 @@ public class PostController(AppDatabase db, PostService ps, RelationshipService
             .Skip(offset)
             .Take(take)
             .ToListAsync();
+        posts = PostService.TruncatePostContent(posts);
 
         Response.Headers["X-Total"] = totalCount.ToString();
 
@@ -101,6 +102,7 @@ public class PostController(AppDatabase db, PostService ps, RelationshipService
             .Skip(offset)
             .Take(take)
             .ToListAsync();
+        posts = PostService.TruncatePostContent(posts);
 
         Response.Headers["X-Total"] = totalCount.ToString();
 

DysonNetwork.Sphere/Post/PostService.cs

@@ -1,3 +1,4 @@
+using System.Text.Json;
 using DysonNetwork.Sphere.Activity;
 using DysonNetwork.Sphere.Storage;
 using Microsoft.EntityFrameworkCore;
@@ -7,6 +8,64 @@ namespace DysonNetwork.Sphere.Post;
 
 public class PostService(AppDatabase db, FileService fs, ActivityService act)
 {
+    public static List<Post> TruncatePostContent(List<Post> input)
+    {
+        // This truncate post content is designed for quill delta
+        const int maxLength = 256;
+        foreach (var item in input)
+        {
+            if (item.Content is not { RootElement: var rootElement }) continue;
+
+            if (rootElement.ValueKind != JsonValueKind.Array) continue;
+            var totalLength = 0;
+            var truncatedArrayElements = new List<JsonElement>();
+
+            foreach (var element in rootElement.EnumerateArray())
+            {
+                if (element is { ValueKind: JsonValueKind.Object } &&
+                    element.TryGetProperty("insert", out var insertProperty))
+                {
+                    if (insertProperty is { ValueKind: JsonValueKind.String })
+                    {
+                        var textContent = insertProperty.GetString()!;
+                        if (totalLength + textContent.Length <= maxLength)
+                        {
+                            truncatedArrayElements.Add(element);
+                            totalLength += textContent.Length;
+                        }
+                        else
+                        {
+                            var remainingLength = maxLength - totalLength;
+                            if (remainingLength > 0)
+                            {
+                                using var truncatedElementDocument =
+                                    JsonDocument.Parse(
+                                        $@"{{ ""insert"": ""{textContent.Substring(0, remainingLength)}"" }}"
+                                    );
+                                truncatedArrayElements.Add(truncatedElementDocument.RootElement.Clone());
+                                totalLength = maxLength;
+                            }
+
+                            break;
+                        }
+                    }
+                    else
+                        truncatedArrayElements.Add(element);
+                }
+                else
+                    truncatedArrayElements.Add(element);
+
+                if (totalLength >= maxLength)
+                    break;
+            }
+
+            using var newDocument = JsonDocument.Parse(JsonSerializer.Serialize(truncatedArrayElements));
+            item.Content = newDocument;
+        }
+
+        return input;
+    }
+
     public async Task<Post> PostAsync(
         Account.Account user,
         Post post,

DysonNetwork.Sphere/Post/Publisher.cs

@@ -41,7 +41,7 @@ public enum PublisherMemberRole
     Viewer = 25
 }
 
-public class PublisherMember : ModelBase
+public class PublisherMember
 {
     public long PublisherId { get; set; }
     [JsonIgnore] public Publisher Publisher { get; set; } = null!;

DysonNetwork.Sphere/Realm/Realm.cs

@@ -0,0 +1,39 @@
+using System.ComponentModel.DataAnnotations;
+using System.Text.Json.Serialization;
+using DysonNetwork.Sphere.Storage;
+using NodaTime;
+
+namespace DysonNetwork.Sphere.Realm;
+
+public class Realm : ModelBase
+{
+    public long Id { get; set; }
+    [MaxLength(1024)] public string Name { get; set; } = string.Empty;
+    [MaxLength(4096)] public string Description { get; set; } = string.Empty;
+
+    public CloudFile? Picture { get; set; }
+    public CloudFile? Background { get; set; }
+    
+    [JsonIgnore] public ICollection<RealmMember> Members { get; set; } = new List<RealmMember>();
+
+    public long AccountId { get; set; }
+    [JsonIgnore] public Account.Account Account { get; set; }
+}
+
+public enum RealmMemberRole
+{
+    Owner = 100,
+    Moderator = 50,
+    Normal = 0
+}
+
+public class RealmMember : ModelBase
+{
+    public long RealmId { get; set; }
+    [JsonIgnore] public Realm  Realm { get; set; } = null!;
+    public long AccountId { get; set; }
+    [JsonIgnore] public Account.Account Account { get; set; } = null!;
+    
+    public RealmMemberRole Role { get; set; }
+    public Instant? JoinedAt { get; set; }
+}

DysonNetwork.Sphere/Realm/RealmController.cs

@@ -0,0 +1,10 @@
+using Microsoft.AspNetCore.Mvc;
+
+namespace DysonNetwork.Sphere.Realm;
+
+[ApiController]
+[Route("/realms")]
+public class RealmController : ControllerBase
+{
+    
+}

DysonNetwork.Sphere/Realm/RealmService.cs

@@ -0,0 +1,6 @@
+namespace DysonNetwork.Sphere.Realm;
+
+public class RealmService(AppDatabase db)
+{
+    
+}