⚡ Directly message singaling

♻️ Replace the LiveKit with built-in webrtc
♻️ Refactored the chat mention logic
2025-10-19 17:34:44 +08:00 · 2025-10-19 17:30:51 +08:00 · 2025-10-17 00:46:55 +08:00 · 2025-10-16 13:13:08 +08:00 · 2025-10-13 23:11:35 +08:00 · 2025-10-13 01:19:51 +08:00
23 changed files with 1505 additions and 475 deletions
--- a/DysonNetwork.Pass/Account/AccountCurrentController.cs
+++ b/DysonNetwork.Pass/Account/AccountCurrentController.cs
@@ -80,7 +80,7 @@ public class AccountCurrentController(
        [MaxLength(1024)] public string? TimeZone { get; set; }
        [MaxLength(1024)] public string? Location { get; set; }
        [MaxLength(4096)] public string? Bio { get; set; }
-        public UsernameColor? UsernameColor { get; set; }
+        public Shared.Models.UsernameColor? UsernameColor { get; set; }
        public Instant? Birthday { get; set; }
        public List<ProfileLink>? Links { get; set; }

@@ -933,4 +933,4 @@ public class AccountCurrentController(
            .ToListAsync();
        return Ok(records);
    }
-}
+}
--- a/DysonNetwork.Pass/Account/AccountServiceGrpc.cs
+++ b/DysonNetwork.Pass/Account/AccountServiceGrpc.cs
@@ -160,6 +160,26 @@ public class AccountServiceGrpc(
        return response;
    }

+    public override async Task<GetAccountBatchResponse> SearchAccount(SearchAccountRequest request, ServerCallContext context)
+    {
+        var accounts = await _db.Accounts
+            .AsNoTracking()
+            .Where(a => EF.Functions.ILike(a.Name, $"%{request.Query}%"))
+            .Include(a => a.Profile)
+            .ToListAsync();
+
+        var perks = await subscriptions.GetPerkSubscriptionsAsync(
+            accounts.Select(x => x.Id).ToList()
+        );
+        foreach (var account in accounts)
+            if (perks.TryGetValue(account.Id, out var perk))
+                account.PerkSubscription = perk?.ToReference();
+
+        var response = new GetAccountBatchResponse();
+        response.Accounts.AddRange(accounts.Select(a => a.ToProtoValue()));
+        return response;
+    }
+
    public override async Task<ListAccountsResponse> ListAccounts(ListAccountsRequest request,
        ServerCallContext context)
    {
--- a/DysonNetwork.Pass/Wallet/SubscriptionGiftController.cs
+++ b/DysonNetwork.Pass/Wallet/SubscriptionGiftController.cs
@@ -197,7 +197,8 @@ public class SubscriptionGiftController(

        if (currentUser.Profile.Level < MinimumAccountLevel)
        {
-            return StatusCode(403, "Account level must be at least 60 to purchase a gift.");
+            if (currentUser.PerkSubscription is null)
+                return StatusCode(403, "Account level must be at least 60 or a member of the Stellar Program to purchase a gift.");
        }

        Duration? giftDuration = null;
--- a/DysonNetwork.Pass/Wallet/SubscriptionService.cs
+++ b/DysonNetwork.Pass/Wallet/SubscriptionService.cs
@@ -250,6 +250,14 @@ public class SubscriptionService(
            : null;
        if (subscriptionInfo is null) throw new InvalidOperationException("No matching subscription found.");

+        if (subscriptionInfo.RequiredLevel > 0)
+        {
+            var profile = await db.AccountProfiles.FirstOrDefaultAsync(p => p.AccountId == subscription.AccountId);
+            if (profile is null) throw new InvalidOperationException("Account must have a profile");
+            if (profile.Level < subscriptionInfo.RequiredLevel)
+                throw new InvalidOperationException("Account level must be at least 60 to purchase a gift.");
+        }
+
        return await payment.CreateOrderAsync(
            null,
            subscriptionInfo.Currency,
@@ -684,6 +692,9 @@ public class SubscriptionService(
        if (now > gift.ExpiresAt)
            throw new InvalidOperationException("Gift has expired.");

+        if (gift.GifterId == redeemer.Id)
+            throw new InvalidOperationException("You cannot redeem your own gift.");
+
        // Validate redeemer permissions
        if (!gift.IsOpenGift && gift.RecipientId != redeemer.Id)
            throw new InvalidOperationException("This gift is not intended for you.");
--- a/DysonNetwork.Shared/Models/Account.cs
+++ b/DysonNetwork.Shared/Models/Account.cs
@@ -148,6 +148,32 @@ public class UsernameColor
    public string? Value { get; set; }          // e.g. "red" or "#ff6600"
    public string? Direction { get; set; }      // e.g. "to right"
    public List<string>? Colors { get; set; }   // e.g. ["#ff0000", "#00ff00"]
+
+    public Proto.UsernameColor ToProtoValue()
+    {
+        var proto = new Proto.UsernameColor
+        {
+            Type = Type,
+            Value = Value,
+            Direction = Direction,
+        };
+        if (Colors is not null)
+        {
+            proto.Colors.AddRange(Colors);
+        }
+        return proto;
+    }
+
+    public static UsernameColor FromProtoValue(Proto.UsernameColor proto)
+    {
+        return new UsernameColor
+        {
+            Type = proto.Type,
+            Value = proto.Value,
+            Direction = proto.Direction,
+            Colors = proto.Colors?.ToList()
+        };
+    }
 }

 public class SnAccountProfile : ModelBase, IIdentifiedResource
@@ -218,6 +244,7 @@ public class SnAccountProfile : ModelBase, IIdentifiedResource
            AccountId = AccountId.ToString(),
            Verification = Verification?.ToProtoValue(),
            ActiveBadge = ActiveBadge?.ToProtoValue(),
+            UsernameColor = UsernameColor?.ToProtoValue(),
            CreatedAt = CreatedAt.ToTimestamp(),
            UpdatedAt = UpdatedAt.ToTimestamp()
        };
@@ -247,6 +274,7 @@ public class SnAccountProfile : ModelBase, IIdentifiedResource
            Picture = proto.Picture is null ? null : SnCloudFileReferenceObject.FromProtoValue(proto.Picture),
            Background = proto.Background is null ? null : SnCloudFileReferenceObject.FromProtoValue(proto.Background),
            AccountId = Guid.Parse(proto.AccountId),
+            UsernameColor = proto.UsernameColor is not null ? UsernameColor.FromProtoValue(proto.UsernameColor) : null,
            CreatedAt = proto.CreatedAt.ToInstant(),
            UpdatedAt = proto.UpdatedAt.ToInstant()
        };
--- a/DysonNetwork.Shared/Models/Post.cs
+++ b/DysonNetwork.Shared/Models/Post.cs
@@ -123,7 +123,7 @@ public class SnPostCategorySubscription : ModelBase
 {
    public Guid Id { get; set; }
    public Guid AccountId { get; set; }
- 
+
    public Guid? CategoryId { get; set; }
    public SnPostCategory? Category { get; set; }
    public Guid? TagId { get; set; }
@@ -168,6 +168,7 @@ public class SnPostReaction : ModelBase
    public Guid PostId { get; set; }
    [JsonIgnore] public SnPost Post { get; set; } = null!;
    public Guid AccountId { get; set; }
+    [NotMapped] public SnAccount? Account { get; set; }
 }

 public class SnPostAward : ModelBase
@@ -176,7 +177,7 @@ public class SnPostAward : ModelBase
    public decimal Amount { get; set; }
    public PostReactionAttitude Attitude { get; set; }
    [MaxLength(4096)] public string? Message { get; set; }
-    
+
    public Guid PostId { get; set; }
    [JsonIgnore] public SnPost Post { get; set; } = null!;
    public Guid AccountId { get; set; }
--- a/DysonNetwork.Shared/Models/WebSocketPacket.cs
+++ b/DysonNetwork.Shared/Models/WebSocketPacket.cs
@@ -74,4 +74,4 @@ public class WebSocketPacket
            ErrorMessage = packet.ErrorMessage
        };
    }
-}
+}
--- a/DysonNetwork.Shared/Proto/account.proto
+++ b/DysonNetwork.Shared/Proto/account.proto
@@ -14,232 +14,240 @@ import 'wallet.proto';

 // Account represents a user account in the system
 message Account {
-  string id = 1;
-  string name = 2;
-  string nick = 3;
-  string language = 4;
-  string region = 18;
-  google.protobuf.Timestamp activated_at = 5;
-  bool is_superuser = 6;
+    string id = 1;
+    string name = 2;
+    string nick = 3;
+    string language = 4;
+    string region = 18;
+    google.protobuf.Timestamp activated_at = 5;
+    bool is_superuser = 6;

-  AccountProfile profile = 7;
-  optional SubscriptionReferenceObject perk_subscription = 16;
-  repeated AccountContact contacts = 8;
-  repeated AccountBadge badges = 9;
-  repeated AccountAuthFactor auth_factors = 10;
-  repeated AccountConnection connections = 11;
-  repeated Relationship outgoing_relationships = 12;
-  repeated Relationship incoming_relationships = 13;
+    AccountProfile profile = 7;
+    optional SubscriptionReferenceObject perk_subscription = 16;
+    repeated AccountContact contacts = 8;
+    repeated AccountBadge badges = 9;
+    repeated AccountAuthFactor auth_factors = 10;
+    repeated AccountConnection connections = 11;
+    repeated Relationship outgoing_relationships = 12;
+    repeated Relationship incoming_relationships = 13;

-  google.protobuf.Timestamp created_at = 14;
-  google.protobuf.Timestamp updated_at = 15;
-  
-  google.protobuf.StringValue automated_id = 17;
+    google.protobuf.Timestamp created_at = 14;
+    google.protobuf.Timestamp updated_at = 15;
+
+    google.protobuf.StringValue automated_id = 17;
 }

 // Enum for status attitude
 enum StatusAttitude {
-  STATUS_ATTITUDE_UNSPECIFIED = 0;
-  POSITIVE = 1;
-  NEGATIVE = 2;
-  NEUTRAL = 3;
+    STATUS_ATTITUDE_UNSPECIFIED = 0;
+    POSITIVE = 1;
+    NEGATIVE = 2;
+    NEUTRAL = 3;
 }

 // AccountStatus represents the status of an account
 message AccountStatus {
-  string id = 1;
-  StatusAttitude attitude = 2;
-  bool is_online = 3;
-  bool is_customized = 4;
-  bool is_invisible = 5;
-  bool is_not_disturb = 6;
-  google.protobuf.StringValue label = 7;
-  google.protobuf.Timestamp cleared_at = 8;
-  string account_id = 9;
-  bytes meta = 10;
+    string id = 1;
+    StatusAttitude attitude = 2;
+    bool is_online = 3;
+    bool is_customized = 4;
+    bool is_invisible = 5;
+    bool is_not_disturb = 6;
+    google.protobuf.StringValue label = 7;
+    google.protobuf.Timestamp cleared_at = 8;
+    string account_id = 9;
+    bytes meta = 10;
+}
+
+message UsernameColor {
+    string type = 1;
+    google.protobuf.StringValue value = 2;
+    google.protobuf.StringValue direction = 3;
+    repeated string colors = 4;
 }

 // Profile contains detailed information about a user
 message AccountProfile {
-  string id = 1;
-  google.protobuf.StringValue first_name = 2;
-  google.protobuf.StringValue middle_name = 3;
-  google.protobuf.StringValue last_name = 4;
-  google.protobuf.StringValue bio = 5;
-  google.protobuf.StringValue gender = 6;
-  google.protobuf.StringValue pronouns = 7;
-  google.protobuf.StringValue time_zone = 8;
-  google.protobuf.StringValue location = 9;
-  google.protobuf.Timestamp birthday = 10;
-  google.protobuf.Timestamp last_seen_at = 11;
+    string id = 1;
+    google.protobuf.StringValue first_name = 2;
+    google.protobuf.StringValue middle_name = 3;
+    google.protobuf.StringValue last_name = 4;
+    google.protobuf.StringValue bio = 5;
+    google.protobuf.StringValue gender = 6;
+    google.protobuf.StringValue pronouns = 7;
+    google.protobuf.StringValue time_zone = 8;
+    google.protobuf.StringValue location = 9;
+    google.protobuf.Timestamp birthday = 10;
+    google.protobuf.Timestamp last_seen_at = 11;

-  VerificationMark verification = 12;
-  BadgeReferenceObject active_badge = 13;
+    VerificationMark verification = 12;
+    BadgeReferenceObject active_badge = 13;

-  int32 experience = 14;
-  int32 level = 15;
-  double leveling_progress = 16;
-  double social_credits = 17;
-  int32 social_credits_level = 18;
+    int32 experience = 14;
+    int32 level = 15;
+    double leveling_progress = 16;
+    double social_credits = 17;
+    int32 social_credits_level = 18;

-  CloudFile picture = 19;
-  CloudFile background = 20;
+    CloudFile picture = 19;
+    CloudFile background = 20;

-  string account_id = 21;
+    string account_id = 21;

-  google.protobuf.Timestamp created_at = 22;
-  google.protobuf.Timestamp updated_at = 23;
+    google.protobuf.Timestamp created_at = 22;
+    google.protobuf.Timestamp updated_at = 23;
+    optional UsernameColor username_color = 24;
 }

 // AccountContact represents a contact method for an account
 message AccountContact {
-  string id = 1;
-  AccountContactType type = 2;
-  google.protobuf.Timestamp verified_at = 3;
-  bool is_primary = 4;
-  string content = 5;
-  string account_id = 6;
+    string id = 1;
+    AccountContactType type = 2;
+    google.protobuf.Timestamp verified_at = 3;
+    bool is_primary = 4;
+    string content = 5;
+    string account_id = 6;

-  google.protobuf.Timestamp created_at = 7;
-  google.protobuf.Timestamp updated_at = 8;
+    google.protobuf.Timestamp created_at = 7;
+    google.protobuf.Timestamp updated_at = 8;
 }

 // Enum for contact types
 enum AccountContactType {
-  ACCOUNT_CONTACT_TYPE_UNSPECIFIED = 0;
-  EMAIL = 1;
-  PHONE_NUMBER = 2;
-  ADDRESS = 3;
+    ACCOUNT_CONTACT_TYPE_UNSPECIFIED = 0;
+    EMAIL = 1;
+    PHONE_NUMBER = 2;
+    ADDRESS = 3;
 }

 // AccountAuthFactor represents an authentication factor for an account
 message AccountAuthFactor {
-  string id = 1;
-  AccountAuthFactorType type = 2;
-  google.protobuf.StringValue secret = 3;  // Omitted from JSON serialization in original
-  map<string, google.protobuf.Value> config = 4;  // Omitted from JSON serialization in original
-  int32 trustworthy = 5;
-  google.protobuf.Timestamp enabled_at = 6;
-  google.protobuf.Timestamp expired_at = 7;
-  string account_id = 8;
-  map<string, google.protobuf.Value> created_response = 9;  // For initial setup
+    string id = 1;
+    AccountAuthFactorType type = 2;
+    google.protobuf.StringValue secret = 3;  // Omitted from JSON serialization in original
+    map<string, google.protobuf.Value> config = 4;  // Omitted from JSON serialization in original
+    int32 trustworthy = 5;
+    google.protobuf.Timestamp enabled_at = 6;
+    google.protobuf.Timestamp expired_at = 7;
+    string account_id = 8;
+    map<string, google.protobuf.Value> created_response = 9;  // For initial setup

-  google.protobuf.Timestamp created_at = 10;
-  google.protobuf.Timestamp updated_at = 11;
+    google.protobuf.Timestamp created_at = 10;
+    google.protobuf.Timestamp updated_at = 11;
 }

 // Enum for authentication factor types
 enum AccountAuthFactorType {
-  AUTH_FACTOR_TYPE_UNSPECIFIED = 0;
-  PASSWORD = 1;
-  EMAIL_CODE = 2;
-  IN_APP_CODE = 3;
-  TIMED_CODE = 4;
-  PIN_CODE = 5;
+    AUTH_FACTOR_TYPE_UNSPECIFIED = 0;
+    PASSWORD = 1;
+    EMAIL_CODE = 2;
+    IN_APP_CODE = 3;
+    TIMED_CODE = 4;
+    PIN_CODE = 5;
 }

 // AccountBadge represents a badge associated with an account
 message AccountBadge {
-  string id = 1;  // Unique identifier for the badge
-  string type = 2;  // Type/category of the badge
-  google.protobuf.StringValue label = 3;  // Display name of the badge
-  google.protobuf.StringValue caption = 4;  // Optional description of the badge
-  map<string, google.protobuf.Value> meta = 5;  // Additional metadata for the badge
-  google.protobuf.Timestamp activated_at = 6;  // When the badge was activated
-  google.protobuf.Timestamp expired_at = 7;  // Optional expiration time
-  string account_id = 8;  // ID of the account this badge belongs to
+    string id = 1;  // Unique identifier for the badge
+    string type = 2;  // Type/category of the badge
+    google.protobuf.StringValue label = 3;  // Display name of the badge
+    google.protobuf.StringValue caption = 4;  // Optional description of the badge
+    map<string, google.protobuf.Value> meta = 5;  // Additional metadata for the badge
+    google.protobuf.Timestamp activated_at = 6;  // When the badge was activated
+    google.protobuf.Timestamp expired_at = 7;  // Optional expiration time
+    string account_id = 8;  // ID of the account this badge belongs to

-  google.protobuf.Timestamp created_at = 9;
-  google.protobuf.Timestamp updated_at = 10;
+    google.protobuf.Timestamp created_at = 9;
+    google.protobuf.Timestamp updated_at = 10;
 }

 // AccountConnection represents a third-party connection for an account
 message AccountConnection {
-  string id = 1;
-  string provider = 2;
-  string provided_identifier = 3;
-  map<string, google.protobuf.Value> meta = 4;
-  google.protobuf.StringValue access_token = 5;  // Omitted from JSON serialization
-  google.protobuf.StringValue refresh_token = 6;  // Omitted from JSON serialization
-  google.protobuf.Timestamp last_used_at = 7;
-  string account_id = 8;
+    string id = 1;
+    string provider = 2;
+    string provided_identifier = 3;
+    map<string, google.protobuf.Value> meta = 4;
+    google.protobuf.StringValue access_token = 5;  // Omitted from JSON serialization
+    google.protobuf.StringValue refresh_token = 6;  // Omitted from JSON serialization
+    google.protobuf.Timestamp last_used_at = 7;
+    string account_id = 8;

-  google.protobuf.Timestamp created_at = 9;
-  google.protobuf.Timestamp updated_at = 10;
+    google.protobuf.Timestamp created_at = 9;
+    google.protobuf.Timestamp updated_at = 10;
 }

 // VerificationMark represents verification status
 message VerificationMark {
-  VerificationMarkType type = 1;
-  string title = 2;
-  string description = 3;
-  string verified_by = 4;
+    VerificationMarkType type = 1;
+    string title = 2;
+    string description = 3;
+    string verified_by = 4;

-  google.protobuf.Timestamp created_at = 5;
-  google.protobuf.Timestamp updated_at = 6;
+    google.protobuf.Timestamp created_at = 5;
+    google.protobuf.Timestamp updated_at = 6;
 }

 enum VerificationMarkType {
-  VERIFICATION_MARK_TYPE_UNSPECIFIED = 0;
-  OFFICIAL = 1;
-  INDIVIDUAL = 2;
-  ORGANIZATION = 3;
-  GOVERNMENT = 4;
-  CREATOR = 5;
-  DEVELOPER = 6;
-  PARODY = 7;
+    VERIFICATION_MARK_TYPE_UNSPECIFIED = 0;
+    OFFICIAL = 1;
+    INDIVIDUAL = 2;
+    ORGANIZATION = 3;
+    GOVERNMENT = 4;
+    CREATOR = 5;
+    DEVELOPER = 6;
+    PARODY = 7;
 }

 // BadgeReferenceObject represents a reference to a badge with minimal information
 message BadgeReferenceObject {
-  string id = 1;  // Unique identifier for the badge
-  string type = 2;  // Type/category of the badge
-  google.protobuf.StringValue label = 3;  // Display name of the badge
-  google.protobuf.StringValue caption = 4;  // Optional description of the badge
-  map<string, google.protobuf.Value> meta = 5;  // Additional metadata for the badge
-  google.protobuf.Timestamp activated_at = 6;  // When the badge was activated
-  google.protobuf.Timestamp expired_at = 7;  // Optional expiration time
-  string account_id = 8;  // ID of the account this badge belongs to
+    string id = 1;  // Unique identifier for the badge
+    string type = 2;  // Type/category of the badge
+    google.protobuf.StringValue label = 3;  // Display name of the badge
+    google.protobuf.StringValue caption = 4;  // Optional description of the badge
+    map<string, google.protobuf.Value> meta = 5;  // Additional metadata for the badge
+    google.protobuf.Timestamp activated_at = 6;  // When the badge was activated
+    google.protobuf.Timestamp expired_at = 7;  // Optional expiration time
+    string account_id = 8;  // ID of the account this badge belongs to
 }

 // Relationship represents a connection between two accounts
 message Relationship {
-  string account_id = 1;
-  string related_id = 2;
-  optional Account account = 3;
-  optional Account related = 4;
-  int32 status = 5;
+    string account_id = 1;
+    string related_id = 2;
+    optional Account account = 3;
+    optional Account related = 4;
+    int32 status = 5;

-  google.protobuf.Timestamp created_at = 6;
-  google.protobuf.Timestamp updated_at = 7;
+    google.protobuf.Timestamp created_at = 6;
+    google.protobuf.Timestamp updated_at = 7;
 }

 // Leveling information
 message LevelingInfo {
-  int32 current_level = 1;
-  int32 current_experience = 2;
-  int32 next_level_experience = 3;
-  int32 previous_level_experience = 4;
-  double level_progress = 5;
-  repeated int32 experience_per_level = 6;
+    int32 current_level = 1;
+    int32 current_experience = 2;
+    int32 next_level_experience = 3;
+    int32 previous_level_experience = 4;
+    double level_progress = 5;
+    repeated int32 experience_per_level = 6;
 }

 // ActionLog represents a record of an action taken by a user
 message ActionLog {
-  string id = 1; // Unique identifier for the log entry
-  string action = 2; // The action that was performed, e.g., "user.login"
-  map<string, google.protobuf.Value> meta = 3; // Metadata associated with the action
-  google.protobuf.StringValue user_agent = 4; // User agent of the client
-  google.protobuf.StringValue ip_address = 5; // IP address of the client
-  google.protobuf.StringValue location = 6; // Geographic location of the client, derived from IP
-  string account_id = 7; // The account that performed the action
-  google.protobuf.StringValue session_id = 8; // The session in which the action was performed
+    string id = 1; // Unique identifier for the log entry
+    string action = 2; // The action that was performed, e.g., "user.login"
+    map<string, google.protobuf.Value> meta = 3; // Metadata associated with the action
+    google.protobuf.StringValue user_agent = 4; // User agent of the client
+    google.protobuf.StringValue ip_address = 5; // IP address of the client
+    google.protobuf.StringValue location = 6; // Geographic location of the client, derived from IP
+    string account_id = 7; // The account that performed the action
+    google.protobuf.StringValue session_id = 8; // The session in which the action was performed

-  google.protobuf.Timestamp created_at = 9; // When the action log was created
+    google.protobuf.Timestamp created_at = 9; // When the action log was created
 }

 message GetAccountStatusBatchResponse {
-  repeated AccountStatus statuses = 1;
+    repeated AccountStatus statuses = 1;
 }

 // ====================================
@@ -248,45 +256,46 @@ message GetAccountStatusBatchResponse {

 // AccountService provides CRUD operations for user accounts and related entities
 service AccountService {
-  // Account Operations
-  rpc GetAccount(GetAccountRequest) returns (Account) {}
-  rpc GetBotAccount(GetBotAccountRequest) returns (Account) {}
-  rpc GetAccountBatch(GetAccountBatchRequest) returns (GetAccountBatchResponse) {}
-  rpc GetBotAccountBatch(GetBotAccountBatchRequest) returns (GetAccountBatchResponse) {}
-  rpc LookupAccountBatch(LookupAccountBatchRequest) returns (GetAccountBatchResponse) {}
-  rpc ListAccounts(ListAccountsRequest) returns (ListAccountsResponse) {}
+    // Account Operations
+    rpc GetAccount(GetAccountRequest) returns (Account) {}
+    rpc GetBotAccount(GetBotAccountRequest) returns (Account) {}
+    rpc GetAccountBatch(GetAccountBatchRequest) returns (GetAccountBatchResponse) {}
+    rpc GetBotAccountBatch(GetBotAccountBatchRequest) returns (GetAccountBatchResponse) {}
+    rpc LookupAccountBatch(LookupAccountBatchRequest) returns (GetAccountBatchResponse) {}
+    rpc SearchAccount(SearchAccountRequest) returns (GetAccountBatchResponse) {}
+    rpc ListAccounts(ListAccountsRequest) returns (ListAccountsResponse) {}

-  rpc GetAccountStatus(GetAccountRequest) returns (AccountStatus) {}
-  rpc GetAccountStatusBatch(GetAccountBatchRequest) returns (GetAccountStatusBatchResponse) {}
+    rpc GetAccountStatus(GetAccountRequest) returns (AccountStatus) {}
+    rpc GetAccountStatusBatch(GetAccountBatchRequest) returns (GetAccountStatusBatchResponse) {}

-  // Profile Operations
-  rpc GetProfile(GetProfileRequest) returns (AccountProfile) {}
+    // Profile Operations
+    rpc GetProfile(GetProfileRequest) returns (AccountProfile) {}

-  // Contact Operations
-  rpc ListContacts(ListContactsRequest) returns (ListContactsResponse) {}
+    // Contact Operations
+    rpc ListContacts(ListContactsRequest) returns (ListContactsResponse) {}

-  // Badge Operations
-  rpc ListBadges(ListBadgesRequest) returns (ListBadgesResponse) {}
+    // Badge Operations
+    rpc ListBadges(ListBadgesRequest) returns (ListBadgesResponse) {}

-  // Authentication Factor Operations
-  rpc ListAuthFactors(ListAuthFactorsRequest) returns (ListAuthFactorsResponse) {}
+    // Authentication Factor Operations
+    rpc ListAuthFactors(ListAuthFactorsRequest) returns (ListAuthFactorsResponse) {}

-  // Connection Operations
-  rpc ListConnections(ListConnectionsRequest) returns (ListConnectionsResponse) {}
+    // Connection Operations
+    rpc ListConnections(ListConnectionsRequest) returns (ListConnectionsResponse) {}

-  // Relationship Operations
-  rpc ListRelationships(ListRelationshipsRequest) returns (ListRelationshipsResponse) {}
+    // Relationship Operations
+    rpc ListRelationships(ListRelationshipsRequest) returns (ListRelationshipsResponse) {}

-  rpc GetRelationship(GetRelationshipRequest) returns (GetRelationshipResponse) {}
-  rpc HasRelationship(GetRelationshipRequest) returns (google.protobuf.BoolValue) {}
-  rpc ListFriends(ListRelationshipSimpleRequest) returns (ListRelationshipSimpleResponse) {}
-  rpc ListBlocked(ListRelationshipSimpleRequest) returns (ListRelationshipSimpleResponse) {}
+    rpc GetRelationship(GetRelationshipRequest) returns (GetRelationshipResponse) {}
+    rpc HasRelationship(GetRelationshipRequest) returns (google.protobuf.BoolValue) {}
+    rpc ListFriends(ListRelationshipSimpleRequest) returns (ListRelationshipSimpleResponse) {}
+    rpc ListBlocked(ListRelationshipSimpleRequest) returns (ListRelationshipSimpleResponse) {}
 }

 // ActionLogService provides operations for action logs
 service ActionLogService {
-  rpc CreateActionLog(CreateActionLogRequest) returns (CreateActionLogResponse) {}
-  rpc ListActionLogs(ListActionLogsRequest) returns (ListActionLogsResponse) {}
+    rpc CreateActionLog(CreateActionLogRequest) returns (CreateActionLogResponse) {}
+    rpc ListActionLogs(ListActionLogsRequest) returns (ListActionLogsResponse) {}
 }

 // ====================================
@@ -295,184 +304,188 @@ service ActionLogService {

 // ActionLog Requests/Responses
 message CreateActionLogRequest {
-  string action = 1;
-  map<string, google.protobuf.Value> meta = 2;
-  google.protobuf.StringValue user_agent = 3;
-  google.protobuf.StringValue ip_address = 4;
-  google.protobuf.StringValue location = 5;
-  string account_id = 6;
-  google.protobuf.StringValue session_id = 7;
+    string action = 1;
+    map<string, google.protobuf.Value> meta = 2;
+    google.protobuf.StringValue user_agent = 3;
+    google.protobuf.StringValue ip_address = 4;
+    google.protobuf.StringValue location = 5;
+    string account_id = 6;
+    google.protobuf.StringValue session_id = 7;
 }

 message CreateActionLogResponse {
-  ActionLog action_log = 1;
+    ActionLog action_log = 1;
 }

 message ListActionLogsRequest {
-  string account_id = 1;
-  string action = 2;
-  int32 page_size = 3;
-  string page_token = 4;
-  string order_by = 5;
+    string account_id = 1;
+    string action = 2;
+    int32 page_size = 3;
+    string page_token = 4;
+    string order_by = 5;
 }

 message ListActionLogsResponse {
-  repeated ActionLog action_logs = 1;
-  string next_page_token = 2;
-  int32 total_size = 3;
+    repeated ActionLog action_logs = 1;
+    string next_page_token = 2;
+    int32 total_size = 3;
 }

 // Account Requests/Responses
 message GetAccountRequest {
-  string id = 1;  // Account ID to retrieve
+    string id = 1;  // Account ID to retrieve
 }

 message GetBotAccountRequest {
-  string automated_id = 1;
+    string automated_id = 1;
 }

 message GetAccountBatchRequest {
-  repeated string id = 1;  // Account ID to retrieve
+    repeated string id = 1;  // Account ID to retrieve
 }

 message GetBotAccountBatchRequest {
-  repeated string automated_id = 1;
+    repeated string automated_id = 1;
 }

 message LookupAccountBatchRequest {
-  repeated string names = 1;
+    repeated string names = 1;
+}
+
+message SearchAccountRequest {
+    string query = 1;
 }

 message GetAccountBatchResponse {
-  repeated Account accounts = 1;  // List of accounts
+    repeated Account accounts = 1;  // List of accounts
 }

 message CreateAccountRequest {
-  string name = 1;  // Required: Unique username
-  string nick = 2;  // Optional: Display name
-  string language = 3;  // Default language
-  bool is_superuser = 4;  // Admin flag
-  AccountProfile profile = 5;  // Initial profile data
+    string name = 1;  // Required: Unique username
+    string nick = 2;  // Optional: Display name
+    string language = 3;  // Default language
+    bool is_superuser = 4;  // Admin flag
+    AccountProfile profile = 5;  // Initial profile data
 }

 message UpdateAccountRequest {
-  string id = 1;  // Account ID to update
-  google.protobuf.StringValue name = 2;  // New username if changing
-  google.protobuf.StringValue nick = 3;  // New display name
-  google.protobuf.StringValue language = 4;  // New language
-  google.protobuf.BoolValue is_superuser = 5;  // Admin status
+    string id = 1;  // Account ID to update
+    google.protobuf.StringValue name = 2;  // New username if changing
+    google.protobuf.StringValue nick = 3;  // New display name
+    google.protobuf.StringValue language = 4;  // New language
+    google.protobuf.BoolValue is_superuser = 5;  // Admin status
 }

 message DeleteAccountRequest {
-  string id = 1;  // Account ID to delete
-  bool purge = 2;  // If true, permanently delete instead of soft delete
+    string id = 1;  // Account ID to delete
+    bool purge = 2;  // If true, permanently delete instead of soft delete
 }

 message ListAccountsRequest {
-  int32 page_size = 1;  // Number of results per page
-  string page_token = 2;  // Token for pagination
-  string filter = 3;  // Filter expression
-  string order_by = 4;  // Sort order
+    int32 page_size = 1;  // Number of results per page
+    string page_token = 2;  // Token for pagination
+    string filter = 3;  // Filter expression
+    string order_by = 4;  // Sort order
 }

 message ListAccountsResponse {
-  repeated Account accounts = 1;  // List of accounts
-  string next_page_token = 2;  // Token for next page
-  int32 total_size = 3;  // Total number of accounts
+    repeated Account accounts = 1;  // List of accounts
+    string next_page_token = 2;  // Token for next page
+    int32 total_size = 3;  // Total number of accounts
 }

 // Profile Requests/Responses
 message GetProfileRequest {
-  string account_id = 1;  // Account ID to get profile for
+    string account_id = 1;  // Account ID to get profile for
 }

 message UpdateProfileRequest {
-  string account_id = 1;  // Account ID to update profile for
-  AccountProfile profile = 2;  // Profile data to update
-  google.protobuf.FieldMask update_mask = 3;  // Fields to update
+    string account_id = 1;  // Account ID to update profile for
+    AccountProfile profile = 2;  // Profile data to update
+    google.protobuf.FieldMask update_mask = 3;  // Fields to update
 }

 // Contact Requests/Responses
 message AddContactRequest {
-  string account_id = 1;  // Account to add contact to
-  AccountContactType type = 2;  // Type of contact
-  string content = 3;  // Contact content (email, phone, etc.)
-  bool is_primary = 4;  // If this should be the primary contact
+    string account_id = 1;  // Account to add contact to
+    AccountContactType type = 2;  // Type of contact
+    string content = 3;  // Contact content (email, phone, etc.)
+    bool is_primary = 4;  // If this should be the primary contact
 }

 message ListContactsRequest {
-  string account_id = 1;  // Account ID to list contacts for
-  AccountContactType type = 2;  // Optional: filter by type
-  bool verified_only = 3;  // Only return verified contacts
+    string account_id = 1;  // Account ID to list contacts for
+    AccountContactType type = 2;  // Optional: filter by type
+    bool verified_only = 3;  // Only return verified contacts
 }

 message ListContactsResponse {
-  repeated AccountContact contacts = 1;  // List of contacts
+    repeated AccountContact contacts = 1;  // List of contacts
 }

 message VerifyContactRequest {
-  string id = 1;  // Contact ID to verify
-  string account_id = 2;  // Account ID (for validation)
-  string code = 3;  // Verification code
+    string id = 1;  // Contact ID to verify
+    string account_id = 2;  // Account ID (for validation)
+    string code = 3;  // Verification code
 }

 // Badge Requests/Responses
 message ListBadgesRequest {
-  string account_id = 1;  // Account to list badges for
-  string type = 2;  // Optional: filter by type
-  bool active_only = 3;  // Only return active (non-expired) badges
+    string account_id = 1;  // Account to list badges for
+    string type = 2;  // Optional: filter by type
+    bool active_only = 3;  // Only return active (non-expired) badges
 }

 message ListBadgesResponse {
-  repeated AccountBadge badges = 1;  // List of badges
+    repeated AccountBadge badges = 1;  // List of badges
 }

 message ListAuthFactorsRequest {
-  string account_id = 1;  // Account to list factors for
-  bool active_only = 2;  // Only return active (non-expired) factors
+    string account_id = 1;  // Account to list factors for
+    bool active_only = 2;  // Only return active (non-expired) factors
 }

 message ListAuthFactorsResponse {
-  repeated AccountAuthFactor factors = 1;  // List of auth factors
+    repeated AccountAuthFactor factors = 1;  // List of auth factors
 }

 message ListConnectionsRequest {
-  string account_id = 1;  // Account to list connections for
-  string provider = 2;  // Optional: filter by provider
+    string account_id = 1;  // Account to list connections for
+    string provider = 2;  // Optional: filter by provider
 }

 message ListConnectionsResponse {
-  repeated AccountConnection connections = 1;  // List of connections
+    repeated AccountConnection connections = 1;  // List of connections
 }

 // Relationship Requests/Responses
 message ListRelationshipsRequest {
-  string account_id = 1;  // Account to list relationships for
-  optional int32 status = 2;  // Filter by status
-  int32 page_size = 5;  // Number of results per page
-  string page_token = 6;  // Token for pagination
+    string account_id = 1;  // Account to list relationships for
+    optional int32 status = 2;  // Filter by status
+    int32 page_size = 5;  // Number of results per page
+    string page_token = 6;  // Token for pagination
 }

 message ListRelationshipsResponse {
-  repeated Relationship relationships = 1;  // List of relationships
-  string next_page_token = 2;  // Token for next page
-  int32 total_size = 3;  // Total number of relationships
+    repeated Relationship relationships = 1;  // List of relationships
+    string next_page_token = 2;  // Token for next page
+    int32 total_size = 3;  // Total number of relationships
 }

 message GetRelationshipRequest {
-  string account_id = 1;
-  string related_id = 2;
-  optional int32 status = 3;
+    string account_id = 1;
+    string related_id = 2;
+    optional int32 status = 3;
 }

 message GetRelationshipResponse {
-  optional Relationship relationship = 1;
+    optional Relationship relationship = 1;
 }

 message ListRelationshipSimpleRequest {
-  string account_id = 1;
+    string account_id = 1;
 }

 message ListRelationshipSimpleResponse {
-  repeated string accounts_id = 1;
+    repeated string accounts_id = 1;
 }
--- a/DysonNetwork.Shared/Registry/AccountClientHelper.cs
+++ b/DysonNetwork.Shared/Registry/AccountClientHelper.cs
@@ -11,7 +11,7 @@ public class AccountClientHelper(AccountService.AccountServiceClient accounts)
        var response = await accounts.GetAccountAsync(request);
        return response;
    }
-    
+
    public async Task<Account> GetBotAccount(Guid automatedId)
    {
        var request = new GetBotAccountRequest { AutomatedId = automatedId.ToString() };
@@ -26,7 +26,14 @@ public class AccountClientHelper(AccountService.AccountServiceClient accounts)
        var response = await accounts.GetAccountBatchAsync(request);
        return response.Accounts.ToList();
    }
-    
+
+    public async Task<List<Account>> SearchAccounts(string query)
+    {
+        var request = new SearchAccountRequest { Query = query };
+        var response = await accounts.SearchAccountAsync(request);
+        return response.Accounts.ToList();
+    }
+
    public async Task<List<Account>> GetBotAccountBatch(List<Guid> automatedIds)
    {
        var request = new GetBotAccountBatchRequest();
--- a/DysonNetwork.Sphere/Autocompletion/AutocompletionController.cs
+++ b/DysonNetwork.Sphere/Autocompletion/AutocompletionController.cs
@@ -0,0 +1,20 @@
+using DysonNetwork.Shared.Models;
+using DysonNetwork.Shared.Proto;
+using Microsoft.AspNetCore.Mvc;
+
+namespace DysonNetwork.Sphere.Autocompletion;
+
+[ApiController]
+[Route("/api/autocomplete")]
+public class AutocompletionController(AutocompletionService aus) : ControllerBase
+{
+    [HttpPost]
+    public async Task<ActionResult<List<DysonNetwork.Shared.Models.Autocompletion>>> TextAutocomplete([FromBody] AutocompletionRequest request, Guid roomId)
+    {
+        if (HttpContext.Items["CurrentUser"] is not Account currentUser)
+            return Unauthorized();
+
+        var result = await aus.GetAutocompletion(request.Content, chatId: roomId, limit: 10);
+        return Ok(result);
+    }
+}
--- a/DysonNetwork.Sphere/Autocompletion/AutocompletionService.cs
+++ b/DysonNetwork.Sphere/Autocompletion/AutocompletionService.cs
@@ -1,10 +1,12 @@
+using DysonNetwork.Shared.Models;
+using DysonNetwork.Shared.Registry;
 using Microsoft.EntityFrameworkCore;

 namespace DysonNetwork.Sphere.Autocompletion;

-public class AutocompletionService(AppDatabase db)
+public class AutocompletionService(AppDatabase db, AccountClientHelper accountsHelper)
 {
-    public async Task<List<DysonNetwork.Shared.Models.Autocompletion>> GetAutocompletion(string content, int limit = 10)
+    public async Task<List<DysonNetwork.Shared.Models.Autocompletion>> GetAutocompletion(string content, Guid? chatId = null, Guid? realmId = null, int limit = 10)
    {
        if (string.IsNullOrWhiteSpace(content))
            return [];
@@ -14,7 +16,8 @@ public class AutocompletionService(AppDatabase db)
            var afterAt = content[1..];
            string type;
            string query;
-            if (afterAt.Contains('/'))
+            var hadSlash = afterAt.Contains('/');
+            if (hadSlash)
            {
                var parts = afterAt.Split('/', 2);
                type = parts[0];
@@ -25,7 +28,8 @@ public class AutocompletionService(AppDatabase db)
                type = "u";
                query = afterAt;
            }
-            return await AutocompleteAt(type, query, limit);
+
+            return await AutocompleteAt(type, query, chatId, realmId, hadSlash, limit);
        }

        if (!content.StartsWith(':')) return [];
@@ -33,15 +37,49 @@ public class AutocompletionService(AppDatabase db)
            var query = content[1..];
            return await AutocompleteSticker(query, limit);
        }
-
    }

-    private async Task<List<DysonNetwork.Shared.Models.Autocompletion>> AutocompleteAt(string type, string query, int limit)
+    private async Task<List<DysonNetwork.Shared.Models.Autocompletion>> AutocompleteAt(string type, string query, Guid? chatId, Guid? realmId, bool hadSlash,
+        int limit)
    {
        var results = new List<DysonNetwork.Shared.Models.Autocompletion>();

        switch (type)
        {
+            case "u":
+                var allAccounts = await accountsHelper.SearchAccounts(query);
+                var filteredAccounts = allAccounts;
+
+                if (chatId.HasValue)
+                {
+                    var chatMemberIds = await db.ChatMembers
+                        .Where(m => m.ChatRoomId == chatId.Value && m.JoinedAt != null && m.LeaveAt == null)
+                        .Select(m => m.AccountId)
+                        .ToListAsync();
+                    var chatMemberIdStrings = chatMemberIds.Select(id => id.ToString()).ToHashSet();
+                    filteredAccounts = allAccounts.Where(a => chatMemberIdStrings.Contains(a.Id)).ToList();
+                }
+                else if (realmId.HasValue)
+                {
+                    var realmMemberIds = await db.RealmMembers
+                        .Where(m => m.RealmId == realmId.Value && m.LeaveAt == null)
+                        .Select(m => m.AccountId)
+                        .ToListAsync();
+                    var realmMemberIdStrings = realmMemberIds.Select(id => id.ToString()).ToHashSet();
+                    filteredAccounts = allAccounts.Where(a => realmMemberIdStrings.Contains(a.Id)).ToList();
+                }
+
+                var users = filteredAccounts
+                    .Take(limit)
+                    .Select(a => new DysonNetwork.Shared.Models.Autocompletion
+                    {
+                        Type = "user",
+                        Keyword = "@" + (hadSlash ? "u/" : "") + a.Name,
+                        Data = SnAccount.FromProtoValue(a)
+                    })
+                    .ToList();
+                results.AddRange(users);
+                break;
            case "p":
                var publishers = await db.Publishers
                    .Where(p => EF.Functions.Like(p.Name, $"{query}%") || EF.Functions.Like(p.Nick, $"{query}%"))
@@ -49,7 +87,7 @@ public class AutocompletionService(AppDatabase db)
                    .Select(p => new DysonNetwork.Shared.Models.Autocompletion
                    {
                        Type = "publisher",
-                        Keyword = p.Name,
+                        Keyword = "@p/" + p.Name,
                        Data = p
                    })
                    .ToListAsync();
@@ -63,7 +101,7 @@ public class AutocompletionService(AppDatabase db)
                    .Select(r => new DysonNetwork.Shared.Models.Autocompletion
                    {
                        Type = "realm",
-                        Keyword = r.Slug,
+                        Keyword = "@r/" + r.Slug,
                        Data = r
                    })
                    .ToListAsync();
@@ -77,7 +115,7 @@ public class AutocompletionService(AppDatabase db)
                    .Select(c => new DysonNetwork.Shared.Models.Autocompletion
                    {
                        Type = "chat",
-                        Keyword = c.Name!,
+                        Keyword = "@c/" + c.Name,
                        Data = c
                    })
                    .ToListAsync();
@@ -92,30 +130,17 @@ public class AutocompletionService(AppDatabase db)
    {
        var stickers = await db.Stickers
            .Include(s => s.Pack)
-            .Where(s => EF.Functions.Like(s.Slug, $"{query}%"))
+            .Where(s => EF.Functions.Like(s.Pack.Prefix + "+" + s.Slug, $"{query}%"))
            .Take(limit)
            .Select(s => new DysonNetwork.Shared.Models.Autocompletion
            {
                Type = "sticker",
-                Keyword = s.Slug,
+                Keyword = $":{s.Pack.Prefix}+{s.Slug}:",
                Data = s
            })
            .ToListAsync();

-        // Also possibly search by pack prefix? But user said slug after :
-        // Perhaps combine or search packs
-        var packs = await db.StickerPacks
-            .Where(p => EF.Functions.Like(p.Prefix, $"{query}%"))
-            .Take(limit)
-            .Select(p => new DysonNetwork.Shared.Models.Autocompletion
-            {
-                Type = "sticker_pack",
-                Keyword = p.Prefix,
-                Data = p
-            })
-            .ToListAsync();
-
-        var results = stickers.Concat(packs).Take(limit).ToList();
+        var results = stickers.ToList();
        return results;
    }
 }
--- a/DysonNetwork.Sphere/Chat/ChatController.cs
+++ b/DysonNetwork.Sphere/Chat/ChatController.cs
@@ -87,7 +87,8 @@ public partial class ChatController(

            var accountId = Guid.Parse(currentUser.Id);
            var member = await db.ChatMembers
-                .Where(m => m.AccountId == accountId && m.ChatRoomId == roomId && m.JoinedAt != null && m.LeaveAt == null)
+                .Where(m => m.AccountId == accountId && m.ChatRoomId == roomId && m.JoinedAt != null &&
+                            m.LeaveAt == null)
                .FirstOrDefaultAsync();
            if (member == null || member.Role < ChatMemberRole.Member)
                return StatusCode(403, "You are not a member of this chat room.");
@@ -103,10 +104,10 @@ public partial class ChatController(
            .Skip(offset)
            .Take(take)
            .ToListAsync();
-        
+
        var members = messages.Select(m => m.Sender).DistinctBy(x => x.Id).ToList();
        members = await crs.LoadMemberAccounts(members);
-        
+
        foreach (var message in messages)
            message.Sender = members.First(x => x.Id == message.SenderId);

@@ -129,7 +130,8 @@ public partial class ChatController(

            var accountId = Guid.Parse(currentUser.Id);
            var member = await db.ChatMembers
-                .Where(m => m.AccountId == accountId && m.ChatRoomId == roomId && m.JoinedAt != null && m.LeaveAt == null)
+                .Where(m => m.AccountId == accountId && m.ChatRoomId == roomId && m.JoinedAt != null &&
+                            m.LeaveAt == null)
                .FirstOrDefaultAsync();
            if (member == null || member.Role < ChatMemberRole.Member)
                return StatusCode(403, "You are not a member of this chat room.");
@@ -141,16 +143,81 @@ public partial class ChatController(
            .FirstOrDefaultAsync();

        if (message is null) return NotFound();
-        
+
        message.Sender = await crs.LoadMemberAccount(message.Sender);

        return Ok(message);
    }


-    [GeneratedRegex("@([A-Za-z0-9_-]+)")]
+    [GeneratedRegex(@"@(?:u/)?([A-Za-z0-9_-]+)")]
    private static partial Regex MentionRegex();

+    /// <summary>
+    /// Extracts mentioned users from message content, replies, and forwards
+    /// </summary>
+    private async Task<List<Guid>> ExtractMentionedUsersAsync(string? content, Guid? repliedMessageId,
+        Guid? forwardedMessageId, Guid roomId, Guid? excludeSenderId = null)
+    {
+        var mentionedUsers = new List<Guid>();
+
+        // Add sender of a replied message
+        if (repliedMessageId.HasValue)
+        {
+            var replyingTo = await db.ChatMessages
+                .Where(m => m.Id == repliedMessageId.Value && m.ChatRoomId == roomId)
+                .Include(m => m.Sender)
+                .Select(m => m.Sender)
+                .FirstOrDefaultAsync();
+            if (replyingTo != null)
+                mentionedUsers.Add(replyingTo.AccountId);
+        }
+
+        // Add sender of a forwarded message
+        if (forwardedMessageId.HasValue)
+        {
+            var forwardedMessage = await db.ChatMessages
+                .Where(m => m.Id == forwardedMessageId.Value)
+                .Select(m => new { m.SenderId })
+                .FirstOrDefaultAsync();
+            if (forwardedMessage != null)
+            {
+                mentionedUsers.Add(forwardedMessage.SenderId);
+            }
+        }
+
+        // Extract mentions from content using regex
+        if (!string.IsNullOrWhiteSpace(content))
+        {
+            var mentionedNames = MentionRegex()
+                .Matches(content)
+                .Select(m => m.Groups[1].Value)
+                .Distinct()
+                .ToList();
+
+            if (mentionedNames.Count > 0)
+            {
+                var queryRequest = new LookupAccountBatchRequest();
+                queryRequest.Names.AddRange(mentionedNames);
+                var queryResponse = (await accounts.LookupAccountBatchAsync(queryRequest)).Accounts;
+                var mentionedIds = queryResponse.Select(a => Guid.Parse(a.Id)).ToList();
+
+                if (mentionedIds.Count > 0)
+                {
+                    var mentionedMembers = await db.ChatMembers
+                        .Where(m => m.ChatRoomId == roomId && mentionedIds.Contains(m.AccountId))
+                        .Where(m => m.JoinedAt != null && m.LeaveAt == null)
+                        .Where(m => excludeSenderId == null || m.AccountId != excludeSenderId.Value)
+                        .Select(m => m.AccountId)
+                        .ToListAsync();
+                    mentionedUsers.AddRange(mentionedMembers);
+                }
+            }
+        }
+
+        return mentionedUsers.Distinct().ToList();
+    }
+
    [HttpPost("{roomId:guid}/messages")]
    [Authorize]
    [RequiredPermission("global", "chat.messages.create")]
@@ -188,6 +255,7 @@ public partial class ChatController(
                .ToList();
        }

+        // Validate reply and forward message IDs exist
        if (request.RepliedMessageId.HasValue)
        {
            var repliedMessage = await db.ChatMessages
@@ -208,28 +276,9 @@ public partial class ChatController(
            message.ForwardedMessageId = forwardedMessage.Id;
        }

-        if (request.Content is not null)
-        {
-            var mentioned = MentionRegex()
-                .Matches(request.Content)
-                .Select(m => m.Groups[1].Value)
-                .ToList();
-            if (mentioned.Count > 0)
-            {
-                var queryRequest = new LookupAccountBatchRequest();
-                queryRequest.Names.AddRange(mentioned);
-                var queryResponse = (await accounts.LookupAccountBatchAsync(queryRequest)).Accounts;
-                var mentionedId = queryResponse
-                    .Select(a => Guid.Parse(a.Id))
-                    .ToList();
-                var mentionedMembers = await db.ChatMembers
-                    .Where(m => m.ChatRoomId == roomId && mentionedId.Contains(m.AccountId))
-                    .Where(m => m.JoinedAt != null && m.LeaveAt == null)
-                    .Select(m => m.Id)
-                    .ToListAsync();
-                message.MembersMentioned = mentionedMembers;
-            }
-        }
+        // Extract mentioned users
+        message.MembersMentioned = await ExtractMentionedUsersAsync(request.Content, request.RepliedMessageId,
+            request.ForwardedMessageId, roomId);

        var result = await cs.SendMessageAsync(message, member, member.ChatRoom);

@@ -259,6 +308,7 @@ public partial class ChatController(
            (request.AttachmentsId == null || request.AttachmentsId.Count == 0))
            return BadRequest("You cannot send an empty message.");

+        // Validate reply and forward message IDs exist
        if (request.RepliedMessageId.HasValue)
        {
            var repliedMessage = await db.ChatMessages
@@ -275,6 +325,11 @@ public partial class ChatController(
                return BadRequest("The message you're forwarding does not exist.");
        }

+        // Update mentions based on new content and references
+        var updatedMentions = await ExtractMentionedUsersAsync(request.Content, request.RepliedMessageId,
+            request.ForwardedMessageId, roomId, accountId);
+        message.MembersMentioned = updatedMentions;
+
        // Call service method to update the message
        await cs.UpdateMessageAsync(
            message,
@@ -324,7 +379,8 @@ public partial class ChatController(

        var accountId = Guid.Parse(currentUser.Id);
        var isMember = await db.ChatMembers
-            .AnyAsync(m => m.AccountId == accountId && m.ChatRoomId == roomId && m.JoinedAt != null && m.LeaveAt == null);
+            .AnyAsync(m =>
+                m.AccountId == accountId && m.ChatRoomId == roomId && m.JoinedAt != null && m.LeaveAt == null);
        if (!isMember)
            return StatusCode(403, "You are not a member of this chat room.");

@@ -332,19 +388,21 @@ public partial class ChatController(
        return Ok(response);
    }

-    [HttpGet("{roomId:guid}/autocomplete")]
-    public async Task<ActionResult<List<DysonNetwork.Shared.Models.Autocompletion>>> ChatAutoComplete([FromBody] AutocompletionRequest request, Guid roomId)
+    [HttpPost("{roomId:guid}/autocomplete")]
+    public async Task<ActionResult<List<DysonNetwork.Shared.Models.Autocompletion>>> ChatAutoComplete(
+        [FromBody] AutocompletionRequest request, Guid roomId)
    {
        if (HttpContext.Items["CurrentUser"] is not Account currentUser)
            return Unauthorized();

        var accountId = Guid.Parse(currentUser.Id);
        var isMember = await db.ChatMembers
-            .AnyAsync(m => m.AccountId == accountId && m.ChatRoomId == roomId && m.JoinedAt != null && m.LeaveAt == null);
+            .AnyAsync(m =>
+                m.AccountId == accountId && m.ChatRoomId == roomId && m.JoinedAt != null && m.LeaveAt == null);
        if (!isMember)
            return StatusCode(403, "You are not a member of this chat room.");

-        var result = await aus.GetAutocompletion(request.Content, limit: 10);
+        var result = await aus.GetAutocompletion(request.Content, chatId: roomId, limit: 10);
        return Ok(result);
    }
-}
+}
--- a/DysonNetwork.Sphere/Chat/ChatService.cs
+++ b/DysonNetwork.Sphere/Chat/ChatService.cs
@@ -15,7 +15,6 @@ public partial class ChatService(
    FileService.FileServiceClient filesClient,
    FileReferenceService.FileReferenceServiceClient fileRefs,
    IServiceScopeFactory scopeFactory,
-    IRealtimeService realtime,
    ILogger<ChatService> logger
 )
 {
@@ -198,8 +197,6 @@ public partial class ChatService(
    public async Task<SnChatMessage> SendMessageAsync(SnChatMessage message, SnChatMember sender, SnChatRoom room)
    {
        if (string.IsNullOrWhiteSpace(message.Nonce)) message.Nonce = Guid.NewGuid().ToString();
-        message.CreatedAt = SystemClock.Instance.GetCurrentInstant();
-        message.UpdatedAt = message.CreatedAt;

        // First complete the save operation
        db.ChatMessages.Add(message);
@@ -209,20 +206,25 @@ public partial class ChatService(
        await CreateFileReferencesForMessageAsync(message);

        // Then start the delivery process
+        var localMessage = message;
+        var localSender = sender;
+        var localRoom = room;
+        var localLogger = logger;
        _ = Task.Run(async () =>
        {
            try
            {
-                await DeliverMessageAsync(message, sender, room);
+                await DeliverMessageAsync(localMessage, localSender, localRoom);
            }
            catch (Exception ex)
            {
-                logger.LogError($"Error when delivering message: {ex.Message} {ex.StackTrace}");
+                localLogger.LogError($"Error when delivering message: {ex.Message} {ex.StackTrace}");
            }
        });

        // Process link preview in the background to avoid delaying message sending
-        _ = Task.Run(async () => await ProcessMessageLinkPreviewAsync(message));
+        var localMessageForPreview = message;
+        _ = Task.Run(async () => await ProcessMessageLinkPreviewAsync(localMessageForPreview));

        message.Sender = sender;
        message.ChatRoom = room;
@@ -532,27 +534,10 @@ public partial class ChatService(
        {
            RoomId = room.Id,
            SenderId = sender.Id,
-            ProviderName = realtime.ProviderName
+            ProviderName = "Built-in WebRTC Signaling",
+            SessionId = Guid.NewGuid().ToString() // Simple session ID for built-in signaling
        };

-        try
-        {
-            var sessionConfig = await realtime.CreateSessionAsync(room.Id, new Dictionary<string, object>
-            {
-                { "room_id", room.Id },
-                { "user_id", sender.AccountId },
-            });
-
-            // Store session details
-            call.SessionId = sessionConfig.SessionId;
-            call.UpstreamConfig = sessionConfig.Parameters;
-        }
-        catch (Exception ex)
-        {
-            // Log the exception but continue with call creation
-            throw new InvalidOperationException($"Failed to create {realtime.ProviderName} session: {ex.Message}");
-        }
-
        db.ChatRealtimeCall.Add(call);
        await db.SaveChangesAsync();

@@ -577,26 +562,7 @@ public partial class ChatService(
        if (sender.Role < ChatMemberRole.Moderator && call.SenderId != sender.Id)
            throw new InvalidOperationException("You are not the call initiator either the chat room moderator.");

-        // End the realtime session if it exists
-        if (!string.IsNullOrEmpty(call.SessionId) && !string.IsNullOrEmpty(call.ProviderName))
-        {
-            try
-            {
-                var config = new RealtimeSessionConfig
-                {
-                    SessionId = call.SessionId,
-                    Parameters = call.UpstreamConfig
-                };
-
-                await realtime.EndSessionAsync(call.SessionId, config);
-            }
-            catch (Exception ex)
-            {
-                // Log the exception but continue with call ending
-                throw new InvalidOperationException($"Failed to end {call.ProviderName} session: {ex.Message}");
-            }
-        }
-
+        // For built-in WebRTC signaling, just set the end time
        call.EndedAt = SystemClock.Instance.GetCurrentInstant();
        db.ChatRealtimeCall.Update(call);
        await db.SaveChangesAsync();
--- a/DysonNetwork.Sphere/Chat/Realtime/README.md
+++ b/DysonNetwork.Sphere/Chat/Realtime/README.md
@@ -0,0 +1,639 @@
+# WebRTC Signaling Server - Client Implementation Guide
+
+This document explains how clients should implement WebRTC signaling to work with the DysonNetwork WebRTC server.
+
+## Overview
+
+The WebRTC signaling server provides a WebSocket-based signaling channel for WebRTC peer-to-peer communication within chat rooms. It handles authentication, room membership verification, and message broadcasting between clients in the same chat room.
+
+When using with the Gateway, the `/api` should be replaced with `<gateway>/sphere`
+
+## Architecture
+
+- **Signaling Endpoint**: `GET /api/chat/realtime/{chatId}`
+- **Authentication**: JWT-based (handled by existing middleware)
+- **Message Format**: WebSocketPacket (structured JSON packets)
+- **Protocol**: Room-based broadcasting with client management and enforced sender validation
+
+## Client Implementation
+
+### 1. Prerequisites
+
+Before implementing WebRTC signaling, ensure your client:
+
+1. **Has Valid Authentication**: Must provide a valid JWT token for the authenticated user
+2. **Is a Chat Room Member**: User must be an active member of the specified chat room
+3. **Supports WebSockets**: Must be capable of establishing WebSocket connections
+
+### 2. Connection Establishment
+
+#### 2.1 WebSocket Connection URL
+
+```
+ws://your-server.com/api/chat/realtime/{chatId}
+```
+
+- **Protocol**: `ws://` (or `wss://` for secure connections)
+- **Path**: `/api/chat/realtime/{chatId}` where `{chatId}` is the chat room GUID
+- **Authentication**: Handled via existing JWT middleware (no additional query parameters needed)
+
+#### 2.2 Authentication
+
+The authentication is handled automatically by the server's middleware that:
+
+1. Checks for valid JWT token in the request
+2. Extracts the authenticated user (`Account`) from `HttpContext.Items["CurrentUser"]`
+3. Validates that the user is a member of the specified chat room
+4. Returns `401 Unauthorized` if not authenticated or `403 Forbidden` if not a room member
+
+#### 2.3 Connection Example (JavaScript)
+
+```javascript
+class SignalingClient {
+    constructor(chatId, serverUrl = 'ws://localhost:5000', userId, userName) {
+        this.chatId = chatId;
+        this.ws = null;
+        this.serverUrl = serverUrl;
+        this.isConnected = false;
+        this.userId = userId;          // Current user ID
+        this.userName = userName;      // Current user name
+        this.onMessageHandlers = [];
+    }
+
+    // Connect to the signaling server
+    async connect() {
+        const url = `${this.serverUrl}/api/chat/realtime/${this.chatId}`;
+
+        try {
+            this.ws = new WebSocket(url);
+            this.ws.onopen = (event) => {
+                this.isConnected = true;
+                console.log('Connected to signaling server for chat:', this.chatId);
+            };
+
+            this.ws.onmessage = (event) => {
+                this.handleMessage(event.data);
+            };
+
+            this.ws.onclose = (event) => {
+                this.isConnected = false;
+                console.log('Disconnected from signaling server');
+            };
+
+            this.ws.onerror = (error) => {
+                console.error('WebSocket error:', error);
+            };
+
+        } catch (error) {
+            console.error('Failed to connect to signaling server:', error);
+            throw error;
+        }
+    }
+
+    // Disconnect from the signaling server
+    disconnect() {
+        if (this.ws && this.isConnected) {
+            this.ws.close();
+            this.isConnected = false;
+        }
+    }
+}
+```
+
+### 3. Message Handling
+
+#### 3.1 Enforced Message Format
+
+The signaling server broadcasts messages using the WebSocketPacket format. All messages are automatically wrapped by the server with validated sender information. Clients should send only the signaling type and data, and receive complete packets with sender details.
+
+**WebSocketPacket Format:**
+
+For signaling messages (see SignalingMessage model):
+```json
+{
+  "type": "webrtc.signal",
+  "data": {
+    "type": "signaling-message-type",
+    "data": {
+      "offer": "...SDP string here...",
+      "answer": "...SDP string here...",
+      "candidate": {...ICE candidate data...}
+    },
+    "to": "optional-target-user-id-for-directed-messaging",
+    "senderAccountId": "server-validated-user-guid",
+    "senderInfo": {
+      "id": "user-guid",
+      "name": "username",
+      "nick": "display nickname",
+      "profile": {},
+      "updatedAt": "2022-01-01T00:00:00Z"
+    }
+  }
+}
+```
+
+For connection established:
+```json
+{
+  "type": "webrtc",
+  "data": {
+    "userId": "user-guid",
+    "roomId": "room-guid",
+    "message": "Connected to call...",
+    "timestamp": "2022-01-01T00:00:00Z",
+    "participants": [...]
+  }
+}
+```
+
+#### 3.2 Incoming Messages
+
+Implement a message handler to process signaling data with user identity:
+
+```javascript
+class SignalingClient {
+    constructor(chatId, serverUrl = 'ws://localhost:5000', userId, userName) {
+        this.chatId = chatId;
+        this.ws = null;
+        this.serverUrl = serverUrl;
+        this.isConnected = false;
+        this.userId = userId;          // Current user ID
+        this.userName = userName;      // Current user name
+        this.onMessageHandlers = [];
+    }
+
+    // ... WebSocket connection methods ...
+
+    handleMessage(message) {
+        try {
+            // Parse WebSocketPacket
+            const packet = JSON.parse(message);
+
+            if (packet.type === 'signaling') {
+                // Extract signaling message with server-validated sender info
+                const signalingMessage = packet.data;
+                const senderId = signalingMessage.SenderAccountId;
+                const senderInfo = signalingMessage.SenderInfo;
+
+                // Ignore messages from yourself (server broadcasts to all clients)
+                if (senderId === this.userId) {
+                    return;
+                }
+
+                // Use sender's nick or name for display
+                const senderDisplay = senderInfo?.nick || senderInfo?.name || senderId;
+                console.log(`Received ${signalingMessage.type} from ${senderDisplay} (${senderId})`);
+
+                // Call handlers with signal type and data and sender info
+                this.onMessageHandlers.forEach(handler => {
+                    try {
+                        handler(signalingMessage, senderId, senderInfo);
+                    } catch (error) {
+                        console.error('Error in message handler:', error);
+                    }
+                });
+            } else if (packet.type === 'webrtc') {
+                // Handle connection established or other server messages
+                console.log('Received server message:', packet.data.message);
+            } else {
+                console.warn('Unknown packet type:', packet.type);
+            }
+
+        } catch (error) {
+            console.error('Failed to parse WebSocketPacket:', message, error);
+        }
+    }
+
+    // Register message handlers
+    onMessage(handler) {
+        this.onMessageHandlers.push(handler);
+        return () => {
+            // Return unsubscribe function
+            const index = this.onMessageHandlers.indexOf(handler);
+            if (index > -1) {
+                this.onMessageHandlers.splice(index, 1);
+            }
+        };
+    }
+
+    sendMessage(messageData) {
+        if (!this.isConnected || !this.ws || this.ws.readyState !== WebSocket.OPEN) {
+            console.warn('Cannot send message: WebSocket not connected');
+            return false;
+        }
+
+        try {
+            // Server will automatically add sender info - just send the signaling data
+            const messageStr = JSON.stringify(messageData);
+            this.ws.send(messageStr);
+            return true;
+        } catch (error) {
+            console.error('Failed to send message:', error);
+            return false;
+        }
+    }
+}
+```
+
+#### 3.3 User Identity Tracking
+
+Track connected peers with full account information:
+
+```javascript
+class SignalingClient {
+    constructor(chatId, serverUrl, userId, userName) {
+        this.chatId = chatId;
+        this.userId = userId;
+        this.userName = userName;
+        this.serverUrl = serverUrl;
+        this.ws = null;
+        this.isConnected = false;
+        this.connectedPeers = new Map();  // userId -> senderInfo
+        this.onPeerHandlers = [];
+        this.onMessageHandlers = [];
+    }
+
+    handleMessage(message) {
+        try {
+            const packet = JSON.parse(message);
+
+            if (packet.type === 'signaling') {
+                const signalingMessage = packet.data;
+                const senderId = signalingMessage.SenderAccountId;
+                const senderInfo = signalingMessage.SenderInfo;
+
+                // Track peer information with full account data
+                if (!this.connectedPeers.has(senderId)) {
+                    this.connectedPeers.set(senderId, senderInfo);
+                    this.onPeerHandlers.forEach(handler => {
+                        try {
+                            handler(senderId, senderInfo, 'connected');
+                        } catch (error) {
+                            console.error('Error in peer handler:', error);
+                        }
+                    });
+                    console.log(`New peer connected: ${senderInfo?.name || senderId} (${senderId})`);
+                }
+
+                // Ignore messages from yourself
+                if (senderId === this.userId) {
+                    return;
+                }
+
+                // Call handlers with signaling message and sender info
+                this.onMessageHandlers.forEach(handler => {
+                    try {
+                        handler(signalingMessage, senderId, senderInfo);
+                    } catch (error) {
+                        console.error('Error in message handler:', error);
+                    }
+                });
+            } else if (packet.type === 'webrtc') {
+                // Handle connection established or other server messages
+                console.log('Received server message:', packet.data.message);
+            } else {
+                console.warn('Unknown packet type:', packet.type);
+            }
+
+        } catch (error) {
+            console.error('Failed to parse WebSocketPacket:', message, error);
+        }
+    }
+
+    // Register peer connection/disconnection handlers
+    onPeer(handler) {
+        this.onPeerHandlers.push(handler);
+        return () => {
+            const index = this.onPeerHandlers.indexOf(handler);
+            if (index > -1) {
+                this.onPeerHandlers.splice(index, 1);
+            }
+        };
+    }
+
+    // Get list of connected peers with full account info
+    getConnectedPeers() {
+        return Array.from(this.connectedPeers.entries()).map(([userId, senderInfo]) => ({
+            userId,
+            userInfo: senderInfo
+        }));
+    }
+
+    // Find user info by user ID
+    getUserInfo(userId) {
+        return this.connectedPeers.get(userId);
+    }
+}
+```
+
+### 4. WebRTC Integration
+
+#### 4.1 Complete Implementation Example
+
+```javascript
+class WebRTCCPUB extends SignalingClient {
+    constructor(chatId, serverUrl) {
+        super(chatId, serverUrl);
+        this.peerConnection = null;
+        this.localStream = null;
+        this.remoteStream = null;
+
+        // Initialize WebRTCPeerConnection with configuration
+        this.initPeerConnection();
+    }
+
+    initPeerConnection() {
+        const configuration = {
+            iceServers: [
+                { urls: 'stun:stun.l.google.com:19302' },
+                { urls: 'stun:stun1.l.google.com:19302' }
+            ]
+        };
+
+        this.peerConnection = new RTCPeerConnection(configuration);
+
+        // Handle ICE candidates
+        this.peerConnection.onicecandidate = (event) => {
+            if (event.candidate) {
+                // Send ICE candidate via signaling server
+                this.sendMessage({
+                    type: 'ice-candidate',
+                    candidate: event.candidate
+                });
+            }
+        };
+
+        // Handle remote stream
+        this.peerConnection.ontrack = (event) => {
+            this.remoteStream = event.streams[0];
+            // Attach remote stream to video element
+            if (this.onRemoteStream) {
+                this.onRemoteStream(this.remoteStream);
+            }
+        };
+    }
+
+    // Register for signaling messages
+    onMessage(signalingMessage, senderId, senderInfo) {
+        super.onMessage(signalingMessage, senderId, senderInfo).then(() => {
+            this.handleSignalingMessage(signalingMessage);
+        });
+    }
+
+    handleSignalingMessage(signalingMessage) {
+        switch (signalingMessage.type) {
+            case 'offer':
+                this.handleOffer(signalingMessage.data.offer);
+                break;
+            case 'answer':
+                this.handleAnswer(signalingMessage.data.answer);
+                break;
+            case 'ice-candidate':
+                this.handleIceCandidate(signalingMessage.data.candidate);
+                break;
+            default:
+                console.warn('Unknown message type:', signalingMessage.type);
+        }
+    }
+
+    async createOffer() {
+        try {
+            const offer = await this.peerConnection.createOffer();
+            await this.peerConnection.setLocalDescription(offer);
+
+            // Send offer via signaling server
+            this.sendMessage({
+                type: 'offer',
+                offer: offer
+            });
+
+        } catch (error) {
+            console.error('Error creating offer:', error);
+        }
+    }
+
+    async handleOffer(offer) {
+        try {
+            await this.peerConnection.setRemoteDescription(new RTCSessionDescription(offer));
+            const answer = await this.peerConnection.createAnswer();
+            await this.peerConnection.setLocalDescription(answer);
+
+            // Send answer via signaling server
+            this.sendMessage({
+                type: 'answer',
+                answer: answer
+            });
+
+        } catch (error) {
+            console.error('Error handling offer:', error);
+        }
+    }
+
+    async handleAnswer(answer) {
+        try {
+            await this.peerConnection.setRemoteDescription(new RTCSessionDescription(answer));
+        } catch (error) {
+            console.error('Error handling answer:', error);
+        }
+    }
+
+    async handleIceCandidate(candidate) {
+        try {
+            await this.peerConnection.addIceCandidate(new RTCIceCandidate(candidate));
+        } catch (error) {
+            console.error('Error handling ICE candidate:', error);
+        }
+    }
+
+    // Get user media and add to peer connection
+    async startLocalStream(constraints = { audio: true, video: true }) {
+        try {
+            this.localStream = await navigator.mediaDevices.getUserMedia(constraints);
+            this.localStream.getTracks().forEach(track => {
+                this.peerConnection.addTrack(track, this.localStream);
+            });
+            return this.localStream;
+        } catch (error) {
+            console.error('Error accessing media devices:', error);
+            throw error;
+        }
+    }
+}
+```
+
+### 5. Usage Flow
+
+#### 5.1 Basic Usage Pattern
+
+```javascript
+// 1. Create signaling client
+const signaling = new WebRTCCPUB(chatId, serverUrl);
+
+// 2. Set up event handlers
+signaling.onRemoteStream = (stream) => {
+    // Attach remote stream to video element
+    remoteVideoElement.srcObject = stream;
+};
+
+// 3. Connect to signaling server
+await signaling.connect();
+
+// 4. Get local media stream
+await signaling.startLocalStream();
+
+// 5. Create offer (for the caller)
+await signaling.createOffer();
+
+// The signaling server will automatically broadcast messages to other clients in the room
+```
+
+#### 5.2 Complete Call Flow Example
+
+```javascript
+async function initiateCall(chatId, serverUrl) {
+    const caller = new WebRTCCPUB(chatId, serverUrl);
+
+    // Connect to signaling server
+    await caller.connect();
+
+    // Get local stream
+    const localStream = await caller.startLocalStream();
+    localVideoElement.srcObject = localStream;
+
+    // Create and send offer
+    await caller.createOffer();
+
+    // Wait for remote stream
+    caller.onRemoteStream = (remoteStream) => {
+        remoteVideoElement.srcObject = remoteStream;
+        console.log('Call connected!');
+    };
+}
+
+async function answerCall(chatId, serverUrl) {
+    const answerer = new WebRTCCPUB(chatId, serverUrl);
+
+    // Connect to signaling server
+    await answerer.connect();
+
+    // Get local stream
+    const localStream = await answerer.startLocalStream();
+    localVideoElement.srcObject = localStream;
+
+    // WebRTC signaling is handled automatically by the message handlers
+    answerer.onRemoteStream = (remoteStream) => {
+        remoteVideoElement.srcObject = remoteStream;
+        console.log('Call connected!');
+    };
+}
+```
+
+### 6. Error Handling
+
+#### 6.1 Connection Errors
+
+```javascript
+// Handle connection errors
+signaling.ws.addEventListener('error', (event) => {
+    console.error('WebSocket connection error:', event);
+    // Attempt reconnection or show error to user
+});
+
+// Handle server close
+signaling.ws.addEventListener('close', (event) => {
+    console.log('WebSocket closed:', event.code, event.reason);
+
+    // Reconnect if clean closure
+    if (event.wasClean) {
+        // Re-establish connection if needed
+    } else {
+        // Report error
+    }
+});
+```
+
+#### 6.2 WebRTC Errors
+
+```javascript
+// Handle getUserMedia errors
+try {
+    const stream = await navigator.mediaDevices.getUserMedia(constraints);
+} catch (error) {
+    switch (error.name) {
+        case 'NotAllowedError':
+            console.error('User denied media access');
+            break;
+        case 'NotFoundError':
+            console.error('No media devices found');
+            break;
+        default:
+            console.error('Error accessing media:', error);
+    }
+}
+```
+
+### 7. Best Practices
+
+#### 7.1 Connection Management
+- **Reconnection Logic**: Implement exponential backoff for reconnection attempts
+- **Connection Pooling**: Re-use connections when possible
+- **Cleanup**: Always close connections and clean up resources
+
+#### 7.2 Message Handling
+- **Message Validation**: Validate incoming signaling messages
+- **Error Resilience**: Gracefully handle malformed messages
+- **Message Types**: Define clear message type conventions
+
+#### 7.3 WebRTC Configuration
+- **ICE Servers**: Configure multiple STUN/TURN servers for reliability
+- **Codec Preferences**: Set preferred codecs for optimal performance
+- **Bandwidth Management**: Implement appropriate bitrate controls
+
+#### 7.4 Security Considerations
+- **Input Validation**: Validate all signaling data
+- **Rate Limiting**: Implement appropriate rate limiting for signaling messages
+- **Authentication**: Ensure proper authentication before establishing connections
+
+### 8. Room Isolation
+
+The signaling server guarantees that:
+- **Messages stay within rooms**: Clients only receive messages from other clients in the same chat room
+- **Authentication per connection**: Each WebSocket connection is individually authenticated
+- **Member validation**: Only active chat room members can connect and send messages
+
+### 9. Troubleshooting
+
+#### 9.1 Common Issues
+- **Connection refused**: Check if JWT token is valid and user is room member
+- **Messages not received**: Verify room membership and connection status
+- **WebRTC failures**: Check ICE server configuration and network connectivity
+
+#### 9.2 Debug Tips
+- Enable console logging for signaling events
+- Monitor WebSocket connection state
+- Validate signaling message formats
+- Check browser developer tools for network activity
+
+## API Reference
+
+### WebSocket Endpoint
+- **URL Pattern**: `/api/chat/realtime/{chatId}`
+- **Method**: `GET`
+- **Authentication**: JWT (middleware-handled)
+- **Protocol**: WebSocket (ws/wss)
+
+### Response Codes
+- **401**: Unauthorized - Invalid or missing JWT
+- **403**: Forbidden - User not member of chat room
+- **400**: Bad Request - Not a WebSocket request
+
+### Message Format
+- **Encoding**: UTF-8 text
+- **Format**: WebSocketPacket JSON (server-enforced structure)
+- **Broadcasting**: Automatic to all room members except sender with validated sender information
+
+## Additional Resources
+
+- [WebRTC API Documentation](https://developer.mozilla.org/en-US/docs/Web/API/WebRTC_API)
+- [WebSocket API Documentation](https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API)
+- [WebRTC Signaling Fundamentals](https://webrtc.org/getting-started/signaling-channels)
--- a/DysonNetwork.Sphere/Chat/RealtimeCallController.cs
+++ b/DysonNetwork.Sphere/Chat/RealtimeCallController.cs
@@ -1,10 +1,12 @@
 using DysonNetwork.Shared.Models;
-using DysonNetwork.Shared.Proto;
-using DysonNetwork.Sphere.Chat.Realtime;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.EntityFrameworkCore;
 using Swashbuckle.AspNetCore.Annotations;
+using System.Collections.Concurrent;
+using System.Net.WebSockets;
+using DysonNetwork.Shared.Proto;
+using WebSocketPacket = DysonNetwork.Shared.Models.WebSocketPacket;

 namespace DysonNetwork.Sphere.Chat;

@@ -13,6 +15,15 @@ public class RealtimeChatConfiguration
    public string Endpoint { get; set; } = null!;
 }

+public class SignalingMessage
+{
+    public string Type { get; set; } = null!;
+    public object? Data { get; set; }
+    public string? To { get; set; }
+    public string? AccountId { get; set; }
+    public SnAccount? Account { get; set; }
+}
+
 [ApiController]
 [Route("/api/chat/realtime")]
 public class RealtimeCallController(
@@ -20,31 +31,36 @@ public class RealtimeCallController(
    AppDatabase db,
    ChatService cs,
    ChatRoomService crs,
-    IRealtimeService realtime
+    ILogger<RealtimeCallController> logger
 ) : ControllerBase
 {
    private readonly RealtimeChatConfiguration _config =
        configuration.GetSection("RealtimeChat").Get<RealtimeChatConfiguration>()!;

+    // A thread-safe collection to hold connected WebSocket clients per chat room.
+    private static readonly
+        ConcurrentDictionary<string, ConcurrentDictionary<Guid, (WebSocket Socket, string
+            AccountId, int Role)>> RoomClients = new();
+
+    // A thread-safe collection to hold participants in each room.
+    private static readonly
+        ConcurrentDictionary<string, ConcurrentDictionary<string, (Account Account, DateTime JoinedAt)>>
+        RoomParticipants = new();
+
    /// <summary>
-    /// This endpoint is especially designed for livekit webhooks,
-    /// for update the call participates and more.
-    /// Learn more at: https://docs.livekit.io/home/server/webhooks/
+    /// This endpoint is for WebRTC signaling webhooks if needed in the future.
+    /// Currently built-in WebRTC signaling doesn't require external webhooks.
    /// </summary>
    [HttpPost("webhook")]
    [SwaggerIgnore]
-    public async Task<IActionResult> WebhookReceiver()
+    public Task<IActionResult> WebhookReceiver()
    {
-        using var reader = new StreamReader(Request.Body);
-        var postData = await reader.ReadToEndAsync();
-        var authHeader = Request.Headers.Authorization.ToString();
-        
-        await realtime.ReceiveWebhook(postData, authHeader);
-    
-        return Ok();
+        // Built-in WebRTC signaling doesn't require webhooks
+        // Return success to indicate endpoint exists for potential future use
+        return Task.FromResult<IActionResult>(Ok("Webhook received - built-in WebRTC signaling active"));
    }

-    [HttpGet("{roomId:guid}")]
+    [HttpGet("{roomId:guid}/status")]
    [Authorize]
    public async Task<ActionResult<SnRealtimeCall>> GetOngoingCall(Guid roomId)
    {
@@ -94,46 +110,32 @@ public class RealtimeCallController(
            return BadRequest("Call session is not properly configured.");

        var isAdmin = member.Role >= ChatMemberRole.Moderator;
-        var userToken = realtime.GetUserToken(currentUser, ongoingCall.SessionId, isAdmin);

-        // Get LiveKit endpoint from configuration
+        // Get WebRTC signaling server endpoint from configuration
        var endpoint = _config.Endpoint ??
-                   throw new InvalidOperationException("LiveKit endpoint configuration is missing");
+                       throw new InvalidOperationException("WebRTC signaling endpoint configuration is missing");

-        // Inject the ChatRoomService
-        var chatRoomService = HttpContext.RequestServices.GetRequiredService<ChatRoomService>();
-
-        // Get current participants from the LiveKit service
+        // Get current participants from the participant list
        var participants = new List<CallParticipant>();
-        if (realtime is LiveKitRealtimeService livekitService)
+        var roomKey = ongoingCall.RoomId.ToString();
+        if (RoomParticipants.TryGetValue(roomKey, out var partsDict))
        {
-            var roomParticipants = await livekitService.GetRoomParticipantsAsync(ongoingCall.SessionId);
-            participants = [];
-            
-            foreach (var p in roomParticipants)
-            {
-                var participant = new CallParticipant
+            participants.AddRange(from part in partsDict.Values
+                select new CallParticipant
                {
-                    Identity = p.Identity,
-                    Name = p.Name,
-                    AccountId = p.AccountId,
-                    JoinedAt = p.JoinedAt
-                };
-            
-                // Fetch the ChatMember profile if we have an account ID
-                if (p.AccountId.HasValue)
-                    participant.Profile = await chatRoomService.GetRoomMember(p.AccountId.Value, roomId);
-            
-                participants.Add(participant);
-            }
+                    Identity = part.Account.Id,
+                    Name = part.Account.Name,
+                    AccountId = Guid.Parse(part.Account.Id),
+                    JoinedAt = part.JoinedAt
+                });
        }

-        // Create the response model
+        // Create the response model for built-in WebRTC signaling
        var response = new JoinCallResponse
        {
-            Provider = realtime.ProviderName,
+            Provider = "Built-in WebRTC Signaling",
            Endpoint = endpoint,
-            Token = userToken,
+            Token = "", // No external token needed for built-in signaling
            CallId = ongoingCall.Id,
            RoomName = ongoingCall.SessionId,
            IsAdmin = isAdmin,
@@ -186,6 +188,212 @@ public class RealtimeCallController(
            return BadRequest(exception.Message);
        }
    }
+
+    /// <summary>
+    /// WebSocket signaling endpoint for WebRTC calls in a specific chat room.
+    /// Path: /api/chat/realtime/{chatId}
+    /// Requires JWT authentication (handled by middleware).
+    /// </summary>
+    [HttpGet("{chatId:guid}")]
+    public async Task SignalingWebSocket(Guid chatId)
+    {
+        if (HttpContext.Items["CurrentUser"] is not Account currentUser)
+        {
+            HttpContext.Response.StatusCode = 401;
+            await HttpContext.Response.WriteAsync("Unauthorized");
+            return;
+        }
+
+        // Verify the user is a member of the chat room
+        var accountId = Guid.Parse(currentUser.Id);
+        var member = await db.ChatMembers
+            .Where(m => m.AccountId == accountId && m.ChatRoomId == chatId && m.JoinedAt != null && m.LeaveAt == null)
+            .FirstOrDefaultAsync();
+
+        if (member == null || member.Role < ChatMemberRole.Member)
+        {
+            HttpContext.Response.StatusCode = 403;
+            await HttpContext.Response.WriteAsync("Forbidden: Not a member of this chat room");
+            return;
+        }
+
+        if (!HttpContext.WebSockets.IsWebSocketRequest)
+        {
+            HttpContext.Response.StatusCode = 400;
+            await HttpContext.Response.WriteAsync("Bad Request: WebSocket connection expected");
+            return;
+        }
+
+        var webSocket = await HttpContext.WebSockets.AcceptWebSocketAsync();
+        var clientId = Guid.NewGuid();
+
+        // Add a client to the room-specific clients dictionary
+        var roomKey = chatId.ToString();
+        var roomDict = RoomClients.GetOrAdd(roomKey,
+            _ => new ConcurrentDictionary<Guid, (WebSocket, string, int)>());
+        roomDict.TryAdd(clientId, (webSocket, currentUser.Id, member.Role));
+
+        // Add to the participant list
+        var participantsDict = RoomParticipants.GetOrAdd(roomKey,
+            _ => new ConcurrentDictionary<string, (Account Account, DateTime JoinedAt)>());
+        var wasAdded = participantsDict.TryAdd(currentUser.Id, (currentUser, DateTime.UtcNow));
+
+        logger.LogInformation(
+            "WebRTC signaling client connected: {ClientId} ({UserId}) in room {RoomId}. Total clients in room: {Count}",
+            clientId, currentUser.Id, chatId, roomDict.Count);
+
+        // Get other participants as CallParticipant objects
+        var otherParticipants = participantsDict.Values
+            .Where(p => p.Account.Id != currentUser.Id)
+            .Select(p => new CallParticipant
+            {
+                Identity = p.Account.Id,
+                Name = p.Account.Name,
+                AccountId = Guid.Parse(p.Account.Id),
+                Account = SnAccount.FromProtoValue(p.Account),
+                JoinedAt = p.JoinedAt
+            })
+            .ToList();
+
+        var welcomePacket = new WebSocketPacket
+        {
+            Type = "webrtc",
+            Data = new
+            {
+                userId = currentUser.Id,
+                roomId = chatId,
+                message = $"Connected to call of #{chatId}.",
+                timestamp = DateTime.UtcNow.ToString("o"),
+                participants = otherParticipants
+            }
+        };
+        var responseBytes = welcomePacket.ToBytes();
+        await webSocket.SendAsync(new ArraySegment<byte>(responseBytes), WebSocketMessageType.Text, true,
+            CancellationToken.None);
+
+        // Broadcast user-joined to existing clients if this is the first connection for this user in the room
+        if (wasAdded)
+        {
+            var joinPacket = new WebSocketPacket
+            {
+                Type = "webrtc.signal",
+                Data = new SignalingMessage
+                {
+                    Type = "user-joined",
+                    AccountId = currentUser.Id,
+                    Account = SnAccount.FromProtoValue(currentUser),
+                    Data = new { }
+                }
+            };
+            await BroadcastMessageToRoom(chatId, clientId, joinPacket);
+        }
+
+        try
+        {
+            // Use a MemoryStream to build the full message from potentially multiple chunks.
+            using var ms = new MemoryStream();
+            // A larger buffer can be more efficient, but the loop is what handles correctness.
+            var buffer = new byte[1024 * 8];
+
+            while (webSocket.State == WebSocketState.Open)
+            {
+                ms.SetLength(0); // Clear the stream for the new message.
+                WebSocketReceiveResult result;
+                do
+                {
+                    result = await webSocket.ReceiveAsync(new ArraySegment<byte>(buffer), CancellationToken.None);
+                    if (result.MessageType == WebSocketMessageType.Close)
+                    {
+                        break;
+                    }
+
+                    ms.Write(buffer, 0, result.Count);
+                } while (!result.EndOfMessage);
+
+                if (result.MessageType == WebSocketMessageType.Close)
+                    break;
+
+                var packet = WebSocketPacket.FromBytes(ms.ToArray());
+                var signalingMessage = packet.GetData<SignalingMessage>();
+                if (signalingMessage is null)
+                {
+                    logger.LogWarning("Signaling message could not be parsed, dismissed...");
+                    continue;
+                }
+                
+                signalingMessage.AccountId = currentUser.Id;
+                signalingMessage.Account = SnAccount.FromProtoValue(currentUser);
+                var broadcastPacket = new WebSocketPacket
+                {
+                    Type = "webrtc.signal",
+                    Data = signalingMessage
+                };
+                
+                logger.LogDebug("Message received from {ClientId} ({UserId}): Type={MessageType}", clientId, currentUser.Id, signalingMessage.Type);
+                await BroadcastMessageToRoom(chatId, clientId, broadcastPacket);
+            }
+        }
+        catch (WebSocketException wsex) when (wsex.WebSocketErrorCode == WebSocketError.ConnectionClosedPrematurely)
+        {
+            // This is an expected exception when a client closes the browser tab.
+            logger.LogDebug("WebRTC signaling client connection was closed prematurely for user {UserId}",
+                currentUser.Id);
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "Error with WebRTC signaling client connection for user {UserId}", currentUser.Id);
+        }
+        finally
+        {
+            // Remove the client from the room
+            if (roomDict.TryRemove(clientId, out _))
+            {
+                logger.LogInformation(
+                    "WebRTC signaling client disconnected: {ClientId} ({UserId}). Total clients in room: {Count}",
+                    clientId, currentUser.Id, roomDict.Count);
+
+                // If no more connections from this account, remove from participants
+                if (roomDict.Values.All(v => v.AccountId != currentUser.Id))
+                {
+                    var tempParticipantsDict = RoomParticipants.GetOrAdd(roomKey,
+                        _ => new ConcurrentDictionary<string, (Account Account, DateTime JoinedAt)>());
+                    if (tempParticipantsDict.TryRemove(currentUser.Id, out _))
+                    {
+                        logger.LogInformation("Participant {UserId} removed from room {RoomId}", currentUser.Id,
+                            chatId);
+                    }
+                }
+            }
+
+            webSocket.Dispose();
+        }
+    }
+
+    private async Task BroadcastMessageToRoom(Guid roomId, Guid senderId, WebSocketPacket packet)
+    {
+        var roomKey = roomId.ToString();
+        if (!RoomClients.TryGetValue(roomKey, out var roomDict))
+            return;
+
+        var messageBytes = packet.ToBytes();
+        var segment = new ArraySegment<byte>(messageBytes);
+
+        var signalingMessage = packet.GetData<SignalingMessage>();
+        var targetAccountId = signalingMessage?.To;
+
+        foreach (var pair in roomDict)
+        {
+            // Skip sender unless it's broadcast message
+            if (!string.IsNullOrEmpty(targetAccountId) && pair.Key == senderId) continue;
+
+            // If directed message, only send to target
+            if (!string.IsNullOrEmpty(targetAccountId) && pair.Value.AccountId != targetAccountId) continue;
+
+            if (pair.Value.Socket.State != WebSocketState.Open) continue;
+            await pair.Value.Socket.SendAsync(segment, WebSocketMessageType.Text, true, CancellationToken.None);
+            logger.LogDebug("Message broadcasted to {ClientId} in room {RoomId}", pair.Key, roomId);
+        }
+    }
 }

 // Response model for joining a call
@@ -220,7 +428,7 @@ public class JoinCallResponse
    /// Whether the user is the admin of the call
    /// </summary>
    public bool IsAdmin { get; set; }
-    
+
    /// <summary>
    /// Current participants in the call
    /// </summary>
@@ -236,22 +444,22 @@ public class CallParticipant
    /// The participant's identity (username)
    /// </summary>
    public string Identity { get; set; } = null!;
-    
+
    /// <summary>
    /// The participant's display name
    /// </summary>
    public string Name { get; set; } = null!;
-    
+
    /// <summary>
    /// The participant's account ID if available
    /// </summary>
    public Guid? AccountId { get; set; }
-    
+
    /// <summary>
    /// The participant's profile in the chat
    /// </summary>
-    public SnChatMember? Profile { get; set; }
-    
+    public SnAccount? Account { get; set; }
+
    /// <summary>
    /// When the participant joined the call
    /// </summary>
--- a/DysonNetwork.Sphere/Post/AccountHelperClient.cs
+++ b/DysonNetwork.Sphere/Post/AccountHelperClient.cs
--- a/DysonNetwork.Sphere/Post/PostController.cs
+++ b/DysonNetwork.Sphere/Post/PostController.cs
@@ -4,6 +4,7 @@ using DysonNetwork.Shared.Auth;
 using DysonNetwork.Shared.Data;
 using DysonNetwork.Shared.Models;
 using DysonNetwork.Shared.Proto;
+using DysonNetwork.Shared.Registry;
 using DysonNetwork.Sphere.Poll;
 using DysonNetwork.Sphere.Realm;
 using DysonNetwork.Sphere.WebReader;
@@ -23,6 +24,7 @@ public class PostController(
    AppDatabase db,
    PostService ps,
    PublisherService pub,
+    AccountClientHelper accountsHelper,
    AccountService.AccountServiceClient accounts,
    ActionLogService.ActionLogServiceClient als,
    PaymentService.PaymentServiceClient payments,
@@ -97,7 +99,7 @@ public class PostController(
        if (currentUser != null)
        {
            var friendsResponse = await accounts.ListFriendsAsync(new ListRelationshipSimpleRequest
-                { AccountId = currentUser.Id });
+            { AccountId = currentUser.Id });
            userFriends = friendsResponse.AccountsId.Select(Guid.Parse).ToList();
        }

@@ -197,7 +199,7 @@ public class PostController(
        if (currentUser != null)
        {
            var friendsResponse = await accounts.ListFriendsAsync(new ListRelationshipSimpleRequest
-                { AccountId = currentUser.Id });
+            { AccountId = currentUser.Id });
            userFriends = friendsResponse.AccountsId.Select(Guid.Parse).ToList();
        }

@@ -228,7 +230,7 @@ public class PostController(
        if (currentUser != null)
        {
            var friendsResponse = await accounts.ListFriendsAsync(new ListRelationshipSimpleRequest
-                { AccountId = currentUser.Id });
+            { AccountId = currentUser.Id });
            userFriends = friendsResponse.AccountsId.Select(Guid.Parse).ToList();
        }

@@ -271,6 +273,14 @@ public class PostController(
            .Take(take)
            .Skip(offset)
            .ToListAsync();
+
+        var accountsProto = await accountsHelper.GetAccountBatch(reactions.Select(r => r.AccountId).ToList());
+        var accounts = accountsProto.ToDictionary(a => Guid.Parse(a.Id), a => SnAccount.FromProtoValue(a));
+
+        foreach (var reaction in reactions)
+            if (accounts.TryGetValue(reaction.AccountId, out var account))
+                reaction.Account = account;
+
        return Ok(reactions);
    }

@@ -283,7 +293,7 @@ public class PostController(
        if (currentUser != null)
        {
            var friendsResponse = await accounts.ListFriendsAsync(new ListRelationshipSimpleRequest
-                { AccountId = currentUser.Id });
+            { AccountId = currentUser.Id });
            userFriends = friendsResponse.AccountsId.Select(Guid.Parse).ToList();
        }

@@ -314,7 +324,7 @@ public class PostController(
        if (currentUser != null)
        {
            var friendsResponse = await accounts.ListFriendsAsync(new ListRelationshipSimpleRequest
-                { AccountId = currentUser.Id });
+            { AccountId = currentUser.Id });
            userFriends = friendsResponse.AccountsId.Select(Guid.Parse).ToList();
        }

@@ -342,7 +352,7 @@ public class PostController(
        if (currentUser != null)
        {
            var friendsResponse = await accounts.ListFriendsAsync(new ListRelationshipSimpleRequest
-                { AccountId = currentUser.Id });
+            { AccountId = currentUser.Id });
            userFriends = friendsResponse.AccountsId.Select(Guid.Parse).ToList();
        }

@@ -448,7 +458,10 @@ public class PostController(

        if (request.RepliedPostId is not null)
        {
-            var repliedPost = await db.Posts.FindAsync(request.RepliedPostId.Value);
+            var repliedPost = await db.Posts
+                .Where(p => p.Id == request.RepliedPostId.Value)
+                .Include(p => p.Publisher)
+                .FirstOrDefaultAsync();
            if (repliedPost is null) return BadRequest("Post replying to was not found.");
            post.RepliedPost = repliedPost;
            post.RepliedPostId = repliedPost.Id;
@@ -456,7 +469,10 @@ public class PostController(

        if (request.ForwardedPostId is not null)
        {
-            var forwardedPost = await db.Posts.FindAsync(request.ForwardedPostId.Value);
+            var forwardedPost = await db.Posts
+                .Where(p => p.Id == request.ForwardedPostId.Value)
+                .Include(p => p.Publisher)
+                .FirstOrDefaultAsync();
            if (forwardedPost is null) return BadRequest("Forwarded post was not found.");
            post.ForwardedPost = forwardedPost;
            post.ForwardedPostId = forwardedPost.Id;
@@ -514,7 +530,7 @@ public class PostController(
        });

        post.Publisher = publisher;
-        
+
        return post;
    }

@@ -536,7 +552,7 @@ public class PostController(

        var friendsResponse =
            await accounts.ListFriendsAsync(new ListRelationshipSimpleRequest
-                { AccountId = currentUser.Id.ToString() });
+            { AccountId = currentUser.Id.ToString() });
        var userFriends = friendsResponse.AccountsId.Select(Guid.Parse).ToList();
        var userPublishers = await pub.GetUserPublishers(Guid.Parse(currentUser.Id));

@@ -632,7 +648,7 @@ public class PostController(

        var friendsResponse =
            await accounts.ListFriendsAsync(new ListRelationshipSimpleRequest
-                { AccountId = currentUser.Id.ToString() });
+            { AccountId = currentUser.Id.ToString() });
        var userFriends = friendsResponse.AccountsId.Select(Guid.Parse).ToList();
        var userPublishers = await pub.GetUserPublishers(Guid.Parse(currentUser.Id));

@@ -883,7 +899,7 @@ public class PostController(
            UserAgent = Request.Headers.UserAgent,
            IpAddress = Request.HttpContext.Connection.RemoteIpAddress?.ToString()
        });
-        
+
        return Ok(post);
    }

@@ -915,4 +931,4 @@ public class PostController(

        return NoContent();
    }
-}
+}
--- a/DysonNetwork.Sphere/Program.cs
+++ b/DysonNetwork.Sphere/Program.cs
@@ -14,7 +14,7 @@ builder.ConfigureAppKestrel(builder.Configuration);

 // Add application services

-builder.Services.AddAppServices(builder.Configuration);
+builder.Services.AddAppServices();
 builder.Services.AddAppRateLimiting();
 builder.Services.AddAppAuthentication();
 builder.Services.AddDysonAuth();
--- a/DysonNetwork.Sphere/Publisher/PublisherService.cs
+++ b/DysonNetwork.Sphere/Publisher/PublisherService.cs
@@ -282,9 +282,9 @@ public class PublisherService(
        public int SubscribersCount { get; set; }
    }

-    private const string PublisherStatsCacheKey = "PublisherStats_{0}";
-    private const string PublisherHeatmapCacheKey = "PublisherHeatmap_{0}";
-    private const string PublisherFeatureCacheKey = "PublisherFeature_{0}_{1}";
+    private const string PublisherStatsCacheKey = "publisher:{0}:stats";
+    private const string PublisherHeatmapCacheKey = "publisher:{0}:heatmap";
+    private const string PublisherFeatureCacheKey = "publisher:{0}:feature:{1}";

    public async Task<PublisherStats?> GetPublisherStats(string name)
    {
@@ -329,7 +329,7 @@ public class PublisherService(
    public async Task<ActivityHeatmap?> GetPublisherHeatmap(string name)
    {
        var cacheKey = string.Format(PublisherHeatmapCacheKey, name);
-        var heatmap = await cache.GetAsync<ActivityHeatmap>(cacheKey);
+        var heatmap = await cache.GetAsync<ActivityHeatmap?>(cacheKey);
        if (heatmap is not null)
            return heatmap;

--- a/DysonNetwork.Sphere/Startup/ServiceCollectionExtensions.cs
+++ b/DysonNetwork.Sphere/Startup/ServiceCollectionExtensions.cs
@@ -15,6 +15,7 @@ using System.Text.Json.Serialization;
 using System.Threading.RateLimiting;
 using DysonNetwork.Shared.Cache;
 using DysonNetwork.Shared.GeoIp;
+using DysonNetwork.Shared.Registry;
 using DysonNetwork.Sphere.Autocompletion;
 using DysonNetwork.Sphere.WebReader;
 using DysonNetwork.Sphere.Discovery;
@@ -25,7 +26,7 @@ namespace DysonNetwork.Sphere.Startup;

 public static class ServiceCollectionExtensions
 {
-    public static IServiceCollection AddAppServices(this IServiceCollection services, IConfiguration configuration)
+    public static IServiceCollection AddAppServices(this IServiceCollection services)
    {
        services.AddLocalization(options => options.ResourcesPath = "Resources");

@@ -40,7 +41,6 @@ public static class ServiceCollectionExtensions
        {
            options.JsonSerializerOptions.NumberHandling = JsonNumberHandling.AllowNamedFloatingPointLiterals;
            options.JsonSerializerOptions.PropertyNamingPolicy = JsonNamingPolicy.SnakeCaseLower;
-            options.JsonSerializerOptions.DictionaryKeyPolicy = JsonNamingPolicy.SnakeCaseLower;

            options.JsonSerializerOptions.ConfigureForNodaTime(DateTimeZoneProviders.Tzdb);
        }).AddDataAnnotationsLocalization(options =>
@@ -119,6 +119,7 @@ public static class ServiceCollectionExtensions
        services.AddScoped<WebFeedService>();
        services.AddScoped<DiscoveryService>();
        services.AddScoped<PollService>();
+        services.AddScoped<AccountClientHelper>();
        services.AddScoped<AutocompletionService>();

        var translationProvider = configuration["Translation:Provider"]?.ToLower();
--- a/DysonNetwork.Sphere/Sticker/StickerController.cs
+++ b/DysonNetwork.Sphere/Sticker/StickerController.cs
@@ -237,6 +237,22 @@ public class StickerController(
        return Redirect($"/drive/files/{sticker.Image.Id}?original=true");
    }

+    [HttpGet("search")]
+    public async Task<ActionResult<List<SnSticker>>> SearchSticker([FromQuery] string query, [FromQuery] int take = 10, [FromQuery] int offset = 0)
+    {
+        var queryable = db.Stickers
+            .Include(s => s.Pack)
+            .Where(s => EF.Functions.Like(s.Pack.Prefix + "+" + s.Slug, $"{query}%"))
+            .OrderByDescending(s => s.CreatedAt)
+            .AsQueryable();
+
+        var totalCount = await queryable.CountAsync();
+        Response.Headers["X-Total"] = totalCount.ToString();
+
+        var stickers = await queryable.Take(take).Skip(offset).ToListAsync();
+        return Ok(stickers);
+    }
+
    [HttpGet("{packId:guid}/content/{id:guid}")]
    public async Task<ActionResult<SnSticker>> GetSticker(Guid packId, Guid id)
    {
@@ -420,4 +436,4 @@ public class StickerController(

        return NoContent();
    }
-}
+}
--- a/DysonNetwork.Sphere/appsettings.json
+++ b/DysonNetwork.Sphere/appsettings.json
@@ -4,7 +4,7 @@
  "SiteUrl": "https://solian.app",
  "Logging": {
    "LogLevel": {
-      "Default": "Information",
+      "Default": "Debug",
      "Microsoft.AspNetCore": "Warning"
    }
  },
--- a/settings/sphere.json
+++ b/settings/sphere.json
@@ -1,38 +1,38 @@
 {
-  "Debug": true,
-  "BaseUrl": "http://localhost:5071",
-  "SiteUrl": "https://solian.app",
-  "Logging": {
-    "LogLevel": {
-      "Default": "Information",
-      "Microsoft.AspNetCore": "Warning"
+    "Debug": true,
+    "BaseUrl": "http://localhost:5071",
+    "SiteUrl": "https://solian.app",
+    "Logging": {
+        "LogLevel": {
+            "Default": "Debug",
+            "Microsoft.AspNetCore": "Warning"
+        }
+    },
+    "AllowedHosts": "*",
+    "ConnectionStrings": {
+        "App": "Host=host.docker.internal;Port=5432;Database=dyson_network;Username=postgres;Password=postgres;Include Error Detail=True;Maximum Pool Size=20;Connection Idle Lifetime=60"
+    },
+    "GeoIp": {
+        "DatabasePath": "/app/keys/GeoLite2-City.mmdb"
+    },
+    "RealtimeChat": {
+        "Endpoint": "https://solar-network-im44o8gq.livekit.cloud",
+        "ApiKey": "",
+        "ApiSecret": ""
+    },
+    "Translation": {
+        "Provider": "Tencent",
+        "Region": "ap-hongkong",
+        "ProjectId": "0",
+        "SecretId": "",
+        "SecretKey": ""
+    },
+    "KnownProxies": ["127.0.0.1", "::1"],
+    "Etcd": {
+        "Insecure": true
+    },
+    "Service": {
+        "Name": "DysonNetwork.Sphere",
+        "Url": "https://localhost:7099"
    }
-  },
-  "AllowedHosts": "*",
-  "ConnectionStrings": {
-    "App": "Host=host.docker.internal;Port=5432;Database=dyson_network;Username=postgres;Password=postgres;Include Error Detail=True;Maximum Pool Size=20;Connection Idle Lifetime=60"
-  },
-  "GeoIp": {
-    "DatabasePath": "/app/keys/GeoLite2-City.mmdb"
-  },
-  "RealtimeChat": {
-    "Endpoint": "https://solar-network-im44o8gq.livekit.cloud",
-    "ApiKey": "",
-    "ApiSecret": ""
-  },
-  "Translation": {
-    "Provider": "Tencent",
-    "Region": "ap-hongkong",
-    "ProjectId": "0",
-    "SecretId": "",
-    "SecretKey": ""
-  },
-  "KnownProxies": ["127.0.0.1", "::1"],
-  "Etcd": {
-    "Insecure": true
-  },
-  "Service": {
-    "Name": "DysonNetwork.Sphere",
-    "Url": "https://localhost:7099"
-  }
 }
Author	SHA1	Message	Date
LittleSheep	28d60c722a	⚡ Directly message singaling	2025-10-19 17:34:44 +08:00
LittleSheep	4626529eb5	♻️ Replace the LiveKit with built-in webrtc	2025-10-19 17:30:51 +08:00
LittleSheep	46ebd92dc1	♻️ Refactored the chat mention logic	2025-10-17 00:46:55 +08:00
LittleSheep	7f8521bb40	👔 Optimize subscriptions logic	2025-10-16 13:13:08 +08:00
LittleSheep	f01226d91a	🐛 Fix post controller return incomplete structure	2025-10-13 23:11:35 +08:00
LittleSheep	6cb6dee6be	🐛 Remove project Sphere dict key snake case convert to fix reaction counts	2025-10-13 01:19:51 +08:00
LittleSheep	0e9caf67ff	🐛 username color hotfix	2025-10-13 01:16:35 +08:00
LittleSheep	ca70bb5487	🐛 Fix missing username color in proto profile	2025-10-13 01:08:48 +08:00
LittleSheep	59ed135f20	✨ Load account info in reaction list API	2025-10-12 21:57:37 +08:00
LittleSheep	6077f91529	✨ Sticker search	2025-10-12 21:46:45 +08:00
LittleSheep	5c485bb1c3	🐛 Fix autocomplete again	2025-10-12 19:30:46 +08:00
LittleSheep	27d979d77b	🐛 Fix sticker auto complete	2025-10-12 19:21:00 +08:00
LittleSheep	15687a0c32	✨ Standalone auto complete	2025-10-12 16:59:26 +08:00
LittleSheep	37ea882ef7	✨ Full featured auto complete	2025-10-12 16:55:32 +08:00