chore: Use Alchemy.config for auth accessors

Alchemy 8.1 introduced configuration for all auth
accessors. This makes the deprecation go away, but
we only can support Alchemy >= 8.1 from now on.

Author: tvdeyen

README.md

@@ -99,17 +99,17 @@ To use Solidus Auth Devise, instruct Alchemy to use the `Spree::User` class:
 
 ```ruby
 # config/initializers/alchemy.rb
-Alchemy.user_class_name = 'Spree::User'
-Alchemy.current_user_method = :spree_current_user
+Alchemy.config.user_class = 'Spree::User'
+Alchemy.config.current_user_method = :spree_current_user
 ```
 
 If you put Spree in it's own routing namespace (see below) you will want to
 let Alchemy know these paths:
 
 ```ruby
 # config/initializers/alchemy.rb
-Alchemy.login_path = '/store/login'
-Alchemy.logout_path = '/store/logout'
+Alchemy.config.login_path = '/store/login'
+Alchemy.config.logout_path = '/store/logout'
 ```
 
 #### 2. Option: Use [Alchemy Devise](https://github.com/AlchemyCMS/alchemy-devise)
@@ -161,15 +161,15 @@ and tell Solidus about Alchemy's path helpers:
 # lib/spree/authentication_helpers.rb
     ...
     def spree_login_path
-      Alchemy.login_path
+      Alchemy.config.login_path
     end
 
     def spree_signup_path
-      Alchemy.signup_path
+      Alchemy.config.signup_path
     end
 
     def spree_logout_path
-      Alchemy.logout_path
+      Alchemy.config.logout_path
     end
     ...
 ```

alchemy-solidus.gemspec

@@ -14,7 +14,7 @@ Gem::Specification.new do |gem|
   gem.require_paths = ["lib"]
   gem.version = Alchemy::Solidus::VERSION
 
-  gem.add_dependency("alchemy_cms", [">= 8.0.0.b", "< 9"])
+  gem.add_dependency("alchemy_cms", [">= 8.1.0.a", "< 9"])
   gem.add_dependency("solidus_api", [">= 4.0.0", "< 5"])
   gem.add_dependency("solidus_core", [">= 4.0.0", "< 5"])
   gem.add_dependency("solidus_backend", [">= 4.0.0", "< 5"])

app/patches/controllers/alchemy/solidus/application_controller_patch.rb

@@ -4,7 +4,7 @@ module Alchemy
   module Solidus
     module ApplicationControllerPatch
       def spree_current_user
-        if Alchemy.user_class_name == "::Alchemy::User"
+        if Alchemy.config.user_class_name == "::Alchemy::User"
           current_user
         else
           super

config/initializers/alchemy.rb

@@ -35,9 +35,8 @@
       name: "Users"
     }
   )
-  Alchemy.user_class_name = "Spree::User"
-  Alchemy.current_user_method = :spree_current_user
-
+  Alchemy.config.user_class = "Spree::User"
+  Alchemy.config.current_user_method = :spree_current_user
   Rails.application.config.after_initialize do
     Alchemy.logout_method = Devise.sign_out_via.to_s
   end

lib/alchemy/solidus/engine.rb

@@ -30,7 +30,7 @@ class Engine < ::Rails::Engine
       end
 
       config.to_prepare do
-        Alchemy.register_ability ::Spree::Ability
+        Alchemy.config.abilities.add("Spree::Ability")
         ::Spree::Ability.register_ability ::Alchemy::Permissions
 
         if SolidusSupport.frontend_available?

lib/patches/backend/controllers/alchemy/solidus/spree_admin_base_controller_patch.rb

@@ -4,14 +4,14 @@ module Alchemy
   module Solidus
     module SpreeAdminBaseControllerPatch
       def self.prepended(base)
-        if Alchemy.user_class_name == "::Alchemy::User"
+        if Alchemy.config.user_class_name == "::Alchemy::User"
           base.unauthorized_redirect = -> do
             if spree_current_user
               flash[:error] = I18n.t("spree.authorization_failure")
               redirect_to spree.root_path
             else
               store_location
-              redirect_to Alchemy.login_path
+              redirect_to Alchemy.config.login_path
             end
           end
         end