Changed to use a separate account for each email address.

Common/Database/Account/AccountData.cs

@@ -26,11 +26,14 @@ public class AccountData : BaseDatabaseDataHelper
         AccountData? result = null;
         DatabaseHelper.GetAllInstance<AccountData>()?.ForEach(account =>
         {
-            if (account.Username == username) result = account;
+            if (string.Equals(account.Username, username, StringComparison.OrdinalIgnoreCase)) result = account;
         });
         return result;
     }
 
+    public static AccountData? GetAccountByEmail(string email)
+        => GetAccountByUserName(email);
+
     public static AccountData? GetAccountByUid(int uid, bool force = false)
     {
         var result = DatabaseHelper.GetInstance<AccountData>(uid, force);
@@ -61,8 +64,15 @@ public class AccountData : BaseDatabaseDataHelper
 
     #region Account
 
-    public static void CreateAccount(string username, int uid, string password)
+    public static AccountData CreateAccount(string username, int uid, string password)
     {
+        if (string.IsNullOrWhiteSpace(username))
+            throw new ArgumentException("Username cannot be empty.", nameof(username));
+        if (GetAccountByUserName(username) != null)
+            throw new InvalidOperationException($"Account '{username}' already exists.");
+        if (uid != 0 && GetAccountByUid(uid) != null)
+            throw new InvalidOperationException($"UID '{uid}' is already in use.");
+
         var newUid = uid;
         if (uid == 0)
         {
@@ -84,6 +94,7 @@ public class AccountData : BaseDatabaseDataHelper
         SetPassword(account, password);
 
         DatabaseHelper.CreateInstance(account);
+        return account;
     }
 
     public static void DeleteAccount(int uid)

Common/Internationalization/Message/LanguageCHS.cs

@@ -128,6 +128,7 @@ public class CommandTextCHS
 {
     public NoticeTextCHS Notice { get; } = new();
     public HelpTextCHS Help { get; } = new();
+    public AccountTextCHS Account { get; } = new();
     public GirlTextCHS Girl { get; } = new();
     public GiveAllTextCHS GiveAll { get; } = new();
     public DebugTextCHS Debug { get; } = new();
@@ -218,6 +219,14 @@ public class HelpTextCHS
     public string CommandAlias => "命令别名: ";
 }
 
+public class AccountTextCHS
+{
+    public string Desc => "管理 SDK 登录使用的账号映射";
+    public string Usage => "用法: /account create <邮箱> <UID>";
+    public string Created => "已创建账号映射: {0} -> UID {1}";
+    public string CreateFailed => "创建账号映射失败: {0}";
+}
+
 /// <summary>
 ///     path: Game.Command.Girl
 /// </summary>

Common/Internationalization/Message/LanguageCHT.cs

@@ -128,6 +128,7 @@ public class CommandTextCHT
 {
     public NoticeTextCHT Notice { get; } = new();
     public HelpTextCHT Help { get; } = new();
+    public AccountTextCHT Account { get; } = new();
     public GirlTextCHT Girl { get; } = new();
     public GiveAllTextCHT GiveAll { get; } = new();
     public DebugTextCHT Debug { get; } = new();
@@ -218,6 +219,14 @@ public class HelpTextCHT
     public string CommandAlias => "命令別名: ";
 }
 
+public class AccountTextCHT
+{
+    public string Desc => "管理 SDK 登入使用的帳號映射";
+    public string Usage => "用法: /account create <郵箱> <UID>";
+    public string Created => "已建立帳號映射: {0} -> UID {1}";
+    public string CreateFailed => "建立帳號映射失敗: {0}";
+}
+
 /// <summary>
 ///     path: Game.Command.Girl
 /// </summary>

Common/Internationalization/Message/LanguageEN.cs

@@ -87,6 +87,7 @@ public class CommandTextEN
 {
     public NoticeTextEN Notice { get; } = new();
     public HelpTextEN Help { get; } = new();
+    public AccountTextEN Account { get; } = new();
     public GirlTextEN Girl { get; } = new();
     public GiveAllTextEN GiveAll { get; } = new();
     public DebugTextEN Debug { get; } = new();
@@ -184,6 +185,14 @@ public class HelpTextEN
     public string CommandAlias => "Command Alias：";
 }
 
+public class AccountTextEN
+{
+    public string Desc => "Manage account mappings for SDK logins";
+    public string Usage => "Usage: /account create <email> <uid>";
+    public string Created => "Created account mapping: {0} -> UID {1}";
+    public string CreateFailed => "Failed to create account mapping: {0}";
+}
+
 /// <summary>
 ///     path: Game.Command.Girl
 /// </summary>

GameServer/Command/Commands/CommandAccount.cs

@@ -0,0 +1,37 @@
+using MikuSB.Database.Account;
+using MikuSB.Enums.Player;
+using MikuSB.Internationalization;
+
+namespace MikuSB.GameServer.Command.Commands;
+
+[CommandInfo("account", "Game.Command.Account.Desc", "Game.Command.Account.Usage", [], [PermEnum.Admin, PermEnum.Support])]
+public class CommandAccount : ICommands
+{
+    [CommandMethod("create")]
+    public async ValueTask Create(CommandArg arg)
+    {
+        if (!await arg.CheckArgCnt(2))
+            return;
+
+        var email = arg.Args[0].Trim();
+        if (!int.TryParse(arg.Args[1], out var uid) || uid <= 0)
+        {
+            await arg.SendMsg(I18NManager.Translate("Game.Command.Notice.InvalidArguments"));
+            return;
+        }
+
+        try
+        {
+            var account = AccountData.CreateAccount(email, uid, "");
+            await arg.SendMsg(I18NManager.Translate("Game.Command.Account.Created", account.Username, account.Uid.ToString()));
+        }
+        catch (InvalidOperationException ex)
+        {
+            await arg.SendMsg(I18NManager.Translate("Game.Command.Account.CreateFailed", ex.Message));
+        }
+        catch (ArgumentException ex)
+        {
+            await arg.SendMsg(I18NManager.Translate("Game.Command.Account.CreateFailed", ex.Message));
+        }
+    }
+}

GameServer/Server/Packet/Recv/Login/HandlerReqLogin.cs

@@ -21,11 +21,13 @@ public class HandlerReqLogin : Handler
     public override async Task OnHandle(Connection connection, byte[] data, ushort seqNo)
     {
         var req = ReqLogin.Parser.ParseFrom(data);
-        var account = AccountData.GetAccountByUid(1);
+        var account = AccountData.GetAccountByComboToken(req.Token)
+                      ?? AccountData.GetAccountByDispatchToken(req.Token)
+                      ?? AccountData.GetAccountByUid(10001)
+                      ?? AccountData.GetAccountByUid(1);
         if (account == null)
         {
-            AccountData.CreateAccount("MIKU", 0, "");
+            account = AccountData.CreateAccount("default@mikusb.local", 10001, "");
-            account = AccountData.GetAccountByUid(1);
             if (account == null)
             {
                 await connection.SendPacket(CmdIds.NtfLogout);

SdkServer/Handlers/RouteController.cs

@@ -1,5 +1,6 @@
 using Microsoft.AspNetCore.Mvc;
 using MikuSB.Configuration;
+using MikuSB.Database.Account;
 using MikuSB.SdkServer.Models;
 using MikuSB.Util;
 using System.Text;
@@ -12,6 +13,8 @@ public class RouteController : ControllerBase
 {
     public static ConfigContainer Config = ConfigManager.Config;
 
+    private const int DefaultAccountUid = 10001;
+
     public static object BuildServerList(string version = "")
     {
         return new
@@ -126,6 +129,51 @@ public class RouteController : ControllerBase
         return Ok(rsp);
     }
 
+    private static AccountData EnsureDefaultAccount()
+    {
+        var account = AccountData.GetAccountByUid(DefaultAccountUid)
+                      ?? AccountData.GetAccountByEmail("default@mikusb.local");
+        if (account != null)
+            return account;
+
+        return AccountData.CreateAccount("default@mikusb.local", DefaultAccountUid, "");
+    }
+
+    private static AccountData ResolveAccountByUid(string? uid)
+    {
+        if (int.TryParse(uid, out var parsedUid))
+        {
+            var accountByUid = AccountData.GetAccountByUid(parsedUid);
+            if (accountByUid != null)
+                return accountByUid;
+        }
+
+        return EnsureDefaultAccount();
+    }
+
+    private static AccountData ResolveAccountForSdkLogin(string? email, string? uid, string? token)
+    {
+        if (!string.IsNullOrWhiteSpace(token))
+        {
+            var accountByComboToken = AccountData.GetAccountByComboToken(token);
+            if (accountByComboToken != null)
+                return accountByComboToken;
+
+            var accountByDispatchToken = AccountData.GetAccountByDispatchToken(token);
+            if (accountByDispatchToken != null)
+                return accountByDispatchToken;
+        }
+
+        if (!string.IsNullOrWhiteSpace(email))
+        {
+            var accountByEmail = AccountData.GetAccountByEmail(email);
+            if (accountByEmail != null)
+                return accountByEmail;
+        }
+
+        return ResolveAccountByUid(uid);
+    }
+
     [HttpGet("/seasun/loginByToken")]
     [HttpPost("/seasun/loginByToken")]
     public IActionResult LoginByToken(
@@ -135,9 +183,9 @@ public class RouteController : ControllerBase
         [FromForm] string? form_token
     )
     {
-        string finalUid = uid ?? form_uid ?? "10001";
+        var account = ResolveAccountForSdkLogin(null, uid ?? form_uid, token ?? form_token);
-        string finalToken = token ?? form_token ?? Guid.NewGuid().ToString("N");
+        var finalUid = account.Uid.ToString();
-        int parsedUid = int.TryParse(finalUid, out var numericUid) ? numericUid : 10001;
+        var finalToken = account.GenerateComboToken();
 
         object rsp = new
         {
@@ -148,14 +196,14 @@ public class RouteController : ControllerBase
                 isFirstLogin = false,
                 isNeedKoreaSciAuth = false,
                 ksOpenId = $"ks_{finalUid}",
-                nickname = Config.GameServer.GameServerName,
+                nickname = account.Username,
                 passportId = finalUid,
                 playerFillAgeUrl = "",
                 status = 0,
                 thirdPartyUid = "",
                 token = finalToken,
                 type = "guest",
-                uid = parsedUid
+                uid = account.Uid
             },
             msg = "操作成功"
         };
@@ -174,9 +222,10 @@ public class RouteController : ControllerBase
         [FromForm] string? form_email
     )
     {
-        string finalUid = uid ?? form_uid ?? "10001";
+        var finalEmail = email ?? form_email;
-        string finalToken = token ?? form_token ?? Guid.NewGuid().ToString("N");
+        var account = ResolveAccountForSdkLogin(finalEmail, uid ?? form_uid, token ?? form_token);
-        int parsedUid = int.TryParse(finalUid, out var numericUid) ? numericUid : 10001;
+        var finalUid = account.Uid.ToString();
+        var finalToken = account.GenerateComboToken();
 
         object rsp = new
         {
@@ -187,14 +236,14 @@ public class RouteController : ControllerBase
                 isFirstLogin = false,
                 isNeedKoreaSciAuth = false,
                 ksOpenId = $"ks_{finalUid}",
-                nickname = Config.GameServer.GameServerName,
+                nickname = account.Username,
                 passportId = finalUid,
                 playerFillAgeUrl = "",
                 status = 0,
                 thirdPartyUid = "",
                 token = finalToken,
                 type = "guest",
-                uid = parsedUid
+                uid = account.Uid
             },
             msg = "操作成功"
         };
@@ -209,7 +258,8 @@ public class RouteController : ControllerBase
         [FromForm] string? form_uid
     )
     {
-        string uidString = uid ?? form_uid ?? "10001";
+        var account = ResolveAccountByUid(uid ?? form_uid);
+        var uidString = account.Uid.ToString();
 
         object rsp = new
         {
@@ -219,7 +269,7 @@ public class RouteController : ControllerBase
                 bindAccountTypes = new[] { "google" },
                 channelUid = uidString,
                 loginAccountType = "google",
-                nickName = Config.GameServer.GameServerName,
+                nickName = account.Username,
                 passportId = uidString,
                 uid = $"seasun__{uidString}"
             },
@@ -288,7 +338,7 @@ public class RouteController : ControllerBase
     [HttpGet("/account/query-uid/{appId}")]
     public IActionResult QueryUid(string appId, [FromQuery] string authInfo)
     {
-        var uid = ExtractUid(authInfo) ?? "10001";
+        var uid = ResolveAccountByUid(ExtractUid(authInfo)).Uid.ToString();
 
         object rsp = new
         {