TODO: Login user when account already exists

src/Web/Endpoints/Google.cs

@@ -14,9 +14,18 @@ public class Google : EndpointGroupBase
 
     public static async Task<Guid> CreateGoogleUser(ISender sender, CreateGoogleUserCommand command, IUserService userService, IGoogleService googleService)
     {
-        var user = await googleService.GetUserInfoAsync(command.AccessToken) ?? throw new Exception("Failed to get user info from Google");
+        var googleUser = await googleService.GetUserInfoAsync(command.AccessToken) ?? throw new Exception("Failed to get user info from Google");
 
-        await userService.CreateUserAsync(user);
+        
+        
+        var user = await userService.FindUserByEmailAsync(googleUser.Email);
+        if (user != null)
+        {
+            // TODO: Return login information
+            return await sender.Send(command);
+        }
+
+        await userService.CreateUserAsync(googleUser);
 
         return await sender.Send(command);
     }