✨ DM groups

DysonNetwork.Sphere/Chat/ChatRoomService.cs

@@ -11,6 +11,46 @@ public class ChatRoomService(AppDatabase db, NotificationService nty)
             $"You just got invited to join {member.ChatRoom.Name}");
     }
     
+    public async Task<List<ChatRoom>> LoadDirectMessageMembers(List<ChatRoom> rooms, Guid userId)
+    {
+        var directRoomsId = rooms
+            .Where(r => r.Type == ChatRoomType.DirectMessage)
+            .Select(r => r.Id)
+            .ToList();
+        if (directRoomsId.Count == 0) return rooms;
+    
+        var directMembers = directRoomsId.Count != 0
+            ? await db.ChatMembers
+                .Where(m => directRoomsId.Contains(m.ChatRoomId))
+                .Where(m => m.AccountId != userId)
+                .Include(m => m.Account)
+                .Include(m => m.Account.Profile)
+                .GroupBy(m => m.ChatRoomId)
+                .ToDictionaryAsync(g => g.Key, g => g.ToList())
+            : new Dictionary<Guid, List<ChatMember>>();
+    
+        return rooms.Select(r =>
+        {
+            if (r.Type == ChatRoomType.DirectMessage && directMembers.TryGetValue(r.Id, out var otherMembers))
+                r.DirectMembers = otherMembers.Select(ChatMemberTransmissionObject.FromEntity).ToList();
+            return r;
+        }).ToList();
+    }
+    
+    public async Task<ChatRoom> LoadDirectMessageMembers(ChatRoom room, Guid userId)
+    {
+        if (room.Type != ChatRoomType.DirectMessage) return room;
+        var members = await db.ChatMembers
+            .Where(m => m.ChatRoomId == room.Id && m.AccountId != userId)
+            .Include(m => m.Account)
+            .Include(m => m.Account.Profile)
+            .ToListAsync();
+    
+        if (members.Count > 0)
+            room.DirectMembers = members.Select(ChatMemberTransmissionObject.FromEntity).ToList();
+        return room;
+    }
+    
     public async Task<bool> IsMemberWithRole(Guid roomId, Guid accountId, ChatMemberRole requiredRole)
     {
         var member = await db.ChatMembers