many fixes and improvements - rework for modules/ and common/

feat(emailer): add Postmark and Resend providers

backend/Modules/Identity/Handlers/Login.cs

@@ -0,0 +1,79 @@
+using Hutopy.Infrastructure.Security;
+using Hutopy.Modules.Identity.Configuration;
+using Hutopy.Modules.Identity.Data;
+using Microsoft.Extensions.Options;
+
+namespace Hutopy.Modules.Identity.Handlers;
+
+[PublicAPI]
+public record LoginRequest(
+    string Email,
+    string Password);
+
+[PublicAPI]
+public record LoginResponse(
+    string AccessToken,
+    string RefreshToken);
+
+[PublicAPI]
+public class LoginHandler(
+    UserManager userManager,
+    IOptionsSnapshot<JwtOptions> jwtOptions)
+    : Endpoint<LoginRequest, LoginResponse>
+{
+    public override void Configure()
+    {
+        AllowAnonymous();
+        Post("/api/users/login");
+        Options(o => o.WithTags("Users"));
+    }
+
+    public override async Task HandleAsync(
+        LoginRequest request,
+        CancellationToken ct)
+    {
+        // Find user by email
+        var user = await userManager.FindByEmailAsync(request.Email);
+        if (user is null)
+        {
+            await SendStringAsync(
+                "Invalid email or password",
+                401,
+                cancellation: ct);
+            return;
+        }
+
+        // Verify password
+        var isPasswordValid = await userManager.CheckPasswordAsync(user, request.Password);
+        if (!isPasswordValid)
+        {
+            await SendStringAsync(
+                "Invalid email or password",
+                401,
+                cancellation: ct);
+            return;
+        }
+
+        // Generate new refresh token
+        user.RefreshToken = RefreshTokenGenerator.Next();
+        user.RefreshTokenExpiryTime = DateTime.UtcNow.Add(jwtOptions.Value.RefreshTokenLifetime);
+        await userManager.UpdateAsync(user);
+
+        // Generate JWT token
+        var accessToken = JwtTokenHelper.GenerateJwtToken(
+            expiresIn: jwtOptions.Value.Lifetime,
+            issuer: jwtOptions.Value.Issuer,
+            audience: jwtOptions.Value.Audience,
+            key: jwtOptions.Value.Key,
+            userId: user.Id.ToString(),
+            email: user.Email ?? string.Empty,
+            alias: user.Alias,
+            firstname: user.Firstname ?? string.Empty,
+            lastname: user.Lastname ?? string.Empty,
+            portraitUrl: user.PortraitUrl);
+
+        await SendOkAsync(
+            new LoginResponse(accessToken, user.RefreshToken),
+            cancellation: ct);
+    }
+}