Sign in , out ,register.

Wino.Core.Domain/Entities/Shared/WinoAccount.cs

@@ -0,0 +1,30 @@
+using System;
+using SQLite;
+
+namespace Wino.Core.Domain.Entities.Shared;
+
+public class WinoAccount
+{
+    [PrimaryKey]
+    public Guid Id { get; set; }
+
+    public string Email { get; set; } = string.Empty;
+
+    public string AccountStatus { get; set; } = string.Empty;
+
+    public bool HasPassword { get; set; }
+
+    public bool HasGoogleLogin { get; set; }
+
+    public bool HasFacebookLogin { get; set; }
+
+    public string AccessToken { get; set; } = string.Empty;
+
+    public DateTime AccessTokenExpiresAtUtc { get; set; }
+
+    public string RefreshToken { get; set; } = string.Empty;
+
+    public DateTime RefreshTokenExpiresAtUtc { get; set; }
+
+    public DateTime LastAuthenticatedUtc { get; set; }
+}

Wino.Core.Domain/Interfaces/IMailDialogService.cs

@@ -1,4 +1,5 @@
-using System;
+#nullable enable
+using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.Threading.Tasks;
@@ -41,7 +42,7 @@ public interface IMailDialogService : IDialogServiceBase
     /// Presents a dialog to the user for signature creation/modification.
     /// </summary>
     /// <returns>Signature information. Null if canceled.</returns>
-    Task<AccountSignature> ShowSignatureEditorDialog(AccountSignature signatureModel = null);
+    Task<AccountSignature> ShowSignatureEditorDialog(AccountSignature? signatureModel = null);
 
     /// <summary>
     /// Presents a dialog to the user for account alias creation/modification.
@@ -59,7 +60,7 @@ public interface IMailDialogService : IDialogServiceBase
     /// </summary>
     /// <param name="existingShortcut">Existing shortcut to edit, or null for new shortcut.</param>
     /// <returns>Dialog result with shortcut information.</returns>
-#pragma warning disable CS8625 // Cannot convert null literal to non-nullable reference type.
+#pragma warning disable CS8625
     Task<KeyboardShortcutDialogResult> ShowKeyboardShortcutDialogAsync(KeyboardShortcut existingShortcut = null);
 #pragma warning restore CS8625
 
@@ -68,5 +69,9 @@ public interface IMailDialogService : IDialogServiceBase
     /// </summary>
     /// <param name="contact">Existing contact to edit, or null for new contact.</param>
     /// <returns>Contact information. Null if canceled.</returns>
-    Task<AccountContact> ShowEditContactDialogAsync(AccountContact contact = null);
+    Task<AccountContact?> ShowEditContactDialogAsync(AccountContact? contact = null);
+
+    Task<WinoAccount?> ShowWinoAccountRegistrationDialogAsync();
+
+    Task<WinoAccount?> ShowWinoAccountLoginDialogAsync();
 }

Wino.Core.Domain/Interfaces/IWinoAccountApiClient.cs

@@ -0,0 +1,15 @@
+using System.Text.Json;
+using System.Threading;
+using System.Threading.Tasks;
+using Wino.Mail.Api.Contracts.Auth;
+using Wino.Mail.Api.Contracts.Common;
+
+namespace Wino.Core.Domain.Interfaces;
+
+public interface IWinoAccountApiClient
+{
+    Task<ApiEnvelope<AuthResultDto>> RegisterAsync(string email, string password, CancellationToken cancellationToken = default);
+    Task<ApiEnvelope<AuthResultDto>> LoginAsync(string email, string password, CancellationToken cancellationToken = default);
+    Task<ApiEnvelope<AuthResultDto>> RefreshAsync(string refreshToken, CancellationToken cancellationToken = default);
+    Task<ApiEnvelope<JsonElement>> LogoutAsync(string refreshToken, CancellationToken cancellationToken = default);
+}

Wino.Core.Domain/Interfaces/IWinoAccountProfileService.cs

@@ -0,0 +1,17 @@
+#nullable enable
+using System.Threading;
+using System.Threading.Tasks;
+using Wino.Core.Domain.Entities.Shared;
+using Wino.Core.Domain.Models.Accounts;
+
+namespace Wino.Core.Domain.Interfaces;
+
+public interface IWinoAccountProfileService
+{
+    Task<WinoAccountOperationResult> RegisterAsync(string email, string password, CancellationToken cancellationToken = default);
+    Task<WinoAccountOperationResult> LoginAsync(string email, string password, CancellationToken cancellationToken = default);
+    Task<WinoAccountOperationResult> RefreshAsync(CancellationToken cancellationToken = default);
+    Task<WinoAccount?> GetActiveAccountAsync();
+    Task<bool> HasActiveAccountAsync();
+    Task SignOutAsync(CancellationToken cancellationToken = default);
+}

Wino.Core.Domain/Models/Accounts/WinoAccountOperationResult.cs

@@ -0,0 +1,25 @@
+#nullable enable
+using Wino.Core.Domain.Entities.Shared;
+
+namespace Wino.Core.Domain.Models.Accounts;
+
+public sealed class WinoAccountOperationResult
+{
+    public bool IsSuccess { get; init; }
+    public string? ErrorCode { get; init; }
+    public WinoAccount? Account { get; init; }
+
+    public static WinoAccountOperationResult Success(WinoAccount account)
+        => new()
+        {
+            IsSuccess = true,
+            Account = account
+        };
+
+    public static WinoAccountOperationResult Failure(string? errorCode)
+        => new()
+        {
+            IsSuccess = false,
+            ErrorCode = errorCode
+        };
+}

Wino.Core.Domain/Translations/en_US/resources.json

@@ -1144,6 +1144,48 @@
     "WelcomeWindow_SkipForNow": "Skip for now — I'll set it up later",
     "WelcomeWindow_AppDescription": "A fast, focused inbox — redesigned for Windows 11",
     "WelcomeWizard_Step1Title": "Welcome",
+    "WinoAccount_SettingsSection_Title": "Wino Account",
+    "WinoAccount_SettingsSection_Description": "Create or sign in to a Wino Account using your localhost auth service.",
+    "WinoAccount_RegisterButton_Title": "Register account",
+    "WinoAccount_RegisterButton_Description": "Create a Wino Account with email and password.",
+    "WinoAccount_RegisterButton_Action": "Open registration",
+    "WinoAccount_LoginButton_Title": "Sign in",
+    "WinoAccount_LoginButton_Description": "Sign in to an existing Wino Account with email and password.",
+    "WinoAccount_LoginButton_Action": "Open login",
+    "WinoAccount_SignOutButton_Title": "Sign out",
+    "WinoAccount_SignOutButton_Description": "Remove the locally stored Wino Account session.",
+    "WinoAccount_SignOutButton_Action": "Sign out",
+    "WinoAccount_RegisterDialog_Title": "Create Wino Account",
+    "WinoAccount_RegisterDialog_Description": "Register a new Wino Account using the localhost API.",
+    "WinoAccount_RegisterDialog_PrimaryButton": "Register",
+    "WinoAccount_LoginDialog_Title": "Sign In to Wino Account",
+    "WinoAccount_LoginDialog_Description": "Sign in using the localhost API.",
+    "WinoAccount_EmailLabel": "Email",
+    "WinoAccount_EmailPlaceholder": "name@example.com",
+    "WinoAccount_PasswordLabel": "Password",
+    "WinoAccount_ConfirmPasswordLabel": "Confirm password",
+    "WinoAccount_Validation_EmailRequired": "Email is required.",
+    "WinoAccount_Validation_PasswordRequired": "Password is required.",
+    "WinoAccount_Validation_PasswordMismatch": "Passwords do not match.",
+    "WinoAccount_Error_InvalidCredentials": "The email address or password is incorrect.",
+    "WinoAccount_Error_AccountLocked": "This account is temporarily locked.",
+    "WinoAccount_Error_AccountBanned": "This account has been banned.",
+    "WinoAccount_Error_AccountSuspended": "This account has been suspended.",
+    "WinoAccount_Error_RefreshTokenInvalid": "Your session is no longer valid. Please sign in again.",
+    "WinoAccount_Error_EmailAlreadyRegistered": "This email address is already registered.",
+    "WinoAccount_Error_ExternalLoginEmailRequired": "An email address is required to complete external sign-in.",
+    "WinoAccount_Error_ExternalLoginInvalid": "The external sign-in request is invalid.",
+    "WinoAccount_Error_ExternalAuthStateInvalid": "The external sign-in state is invalid or expired.",
+    "WinoAccount_Error_ExternalAuthCodeInvalid": "The external sign-in code is invalid or expired.",
+    "WinoAccount_Error_Forbidden": "You do not have permission to perform this action.",
+    "WinoAccount_Error_ValidationFailed": "The request is invalid. Please review the entered values.",
+    "WinoAccount_RegisterSuccessMessage": "Wino Account registration completed for {0}.",
+    "WinoAccount_LoginSuccessMessage": "Signed in to Wino Account as {0}.",
+    "WinoAccount_SignOut_SuccessMessage": "Signed out from Wino Account {0}.",
+    "WinoAccount_SignOut_NoAccountMessage": "There is no active Wino Account to sign out.",
+    "WinoAccount_Titlebar_SignedOutTitle": "Wino Account",
+    "WinoAccount_Titlebar_SignedOutDescription": "Sign in or create a Wino Account to manage your Wino session.",
+    "WinoAccount_Titlebar_SignedInStatus": "Status: {0}",
     "WelcomeWizard_Step2Title": "Add Account",
     "WelcomeWizard_Step3Title": "Finish Setup",
     "ProviderSelection_Title": "Choose your email provider",

Wino.Core.Domain/Wino.Core.Domain.csproj

@@ -61,6 +61,9 @@
 		<PackageReference Include="sqlite-net-pcl" />
 		<PackageReference Include="TimePeriodLibrary.NET" />
 	</ItemGroup>
+	<ItemGroup>
+		<ProjectReference Include="..\Wino.Mail.Contracts\Wino.Mail.Contracts.csproj" />
+	</ItemGroup>
 	<ItemGroup>
 		<Service Include="{508349b6-6b84-4df5-91f0-309beebad82d}" />
 	</ItemGroup>
@@ -71,4 +74,4 @@
 		<!-- Source Generators -->
 		<ProjectReference Include="..\Wino.SourceGenerators\Wino.SourceGenerators.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
 	</ItemGroup>
-</Project>
+</Project>