Refactored UseCases and Controller

app/controllers/users_controller.rb

@@ -11,18 +11,24 @@ def new
 
   def create
     success = ->(user) { redirect_to user_path(user), notice: 'User has been created' }
-    error = ->(user) { @user = user; render :new }
+    error = lambda do |user|
+      @user = user
+      render :new
+    end
 
-    UseCase::User::SignUp.new(repo).call(user_params, success: success, failure: error)
+    UseCase::User::SignUp.call(user_params, success: success, failure: error)
   end
 
   def edit; end
 
   def update
     success = ->(user) { redirect_to user_path(user), notice: 'User has been updated' }
-    error = ->(user) { @user = user; render :edit }
+    error = lambda do |user|
+      @user = user
+      render :edit
+    end
 
-    UseCase::User::UpdateProfile.new(repo).call(@user, user_params, success: success, failure: error)
+    UseCase::User::UpdateProfile.call(@user, user_params, success: success, failure: error)
   end
 
   def show; end
@@ -31,7 +37,7 @@ def destroy
     success = -> { redirect_to users_path, notice: 'User has been removed' }
     error = -> { redirect_to users_path, alert: 'Couldn\'t remove user' }
 
-    UseCase::User::DeleteProfile.new(repo).call(@user, success: success, failure: error)
+    UseCase::User::DeleteProfile.call(@user, success: success, failure: error)
   end
 
   private

app/use_cases/use_case/user/delete_profile.rb

@@ -1,9 +1,23 @@
 module UseCase
   module User
-    class DeleteProfile < UseCase::Base
-      def call(user, callbacks)
+    class DeleteProfile
+      def self.call(user, callbacks, repository = UserRepository.new)
+        new(user, callbacks, repository).call
+      end
+
+      def call
         repository.delete(user) ? callbacks[:success].call : callbacks[:failure].call
       end
+
+      private
+
+      def initialize(user, callbacks, repository)
+        @user = user
+        @callbacks = callbacks
+        @repository = repository
+      end
+
+      attr_reader :user, :callbacks, :repository
     end
   end
 end

app/use_cases/use_case/user/sign_up.rb

@@ -1,10 +1,24 @@
 module UseCase
   module User
-    class SignUp < UseCase::Base
-      def call(attrs, callbacks)
+    class SignUp
+      def self.call(attrs, callbacks, repository = UserRepository.new)
+        new(attrs, callbacks, repository).call
+      end
+
+      def call
         user = repository.new_entity(attrs)
         repository.save(user) ? callbacks[:success].call(user) : callbacks[:failure].call(user)
       end
+
+      private
+
+      def initialize(attrs, callbacks, repository)
+        @attrs = attrs
+        @callbacks = callbacks
+        @repository = repository
+      end
+
+      attr_reader :repository, :callbacks, :attrs
     end
   end
 end

app/use_cases/use_case/user/update_profile.rb

@@ -1,11 +1,26 @@
 module UseCase
   module User
-    class UpdateProfile < UseCase::Base
-      def call(user, attrs, callbacks)
+    class UpdateProfile
+      def self.call(user, attrs, callbacks, repository = UserRepository.new)
+        new(user, attrs, callbacks, repository).call
+      end
+
+      def call
         user.assign_attributes(attrs)
 
         repository.save(user) ? callbacks[:success].call(user) : callbacks[:failure].call(user)
       end
+
+      private
+
+      def initialize(user, attrs, callbacks, repository)
+        @user = user
+        @attrs = attrs
+        @callbacks = callbacks
+        @repository = repository
+      end
+
+      attr_reader :user, :attrs, :callbacks, :repository
     end
   end
 end