15 files changed, 141 insertions, 29 deletions
diff --git a/app/services/users/activity_service.rb b/app/services/users/activity_service.rb
index 64844a3f002..c89a286cc8b 100644
--- a/app/services/users/activity_service.rb
+++ b/app/services/users/activity_service.rb
@@ -38,4 +38,4 @@ module Users
   end
 end
 
-Users::ActivityService.prepend_ee_mod
+Users::ActivityService.prepend_mod
diff --git a/app/services/users/approve_service.rb b/app/services/users/approve_service.rb
index fea7fc55d90..15486ddcd43 100644
--- a/app/services/users/approve_service.rb
+++ b/app/services/users/approve_service.rb
@@ -47,4 +47,4 @@ module Users
   end
 end
 
-Users::ApproveService.prepend_if_ee('EE::Users::ApproveService')
+Users::ApproveService.prepend_mod_with('Users::ApproveService')
diff --git a/app/services/users/ban_service.rb b/app/services/users/ban_service.rb
new file mode 100644
index 00000000000..247ed14966b
--- /dev/null
+++ b/app/services/users/ban_service.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+module Users
+  class BanService < BaseService
+    def initialize(current_user)
+      @current_user = current_user
+    end
+
+    def execute(user)
+      if user.ban
+        log_event(user)
+        success
+      else
+        messages = user.errors.full_messages
+        error(messages.uniq.join('. '))
+      end
+    end
+
+    private
+
+    def log_event(user)
+      Gitlab::AppLogger.info(message: "User banned", user: "#{user.username}", email: "#{user.email}", banned_by: "#{current_user.username}", ip_address: "#{current_user.current_sign_in_ip}")
+    end
+  end
+end
diff --git a/app/services/users/block_service.rb b/app/services/users/block_service.rb
index 8513664ee85..37921c477b4 100644
--- a/app/services/users/block_service.rb
+++ b/app/services/users/block_service.rb
@@ -26,4 +26,4 @@ module Users
   end
 end
 
-Users::BlockService.prepend_if_ee('EE::Users::BlockService')
+Users::BlockService.prepend_mod_with('Users::BlockService')
diff --git a/app/services/users/build_service.rb b/app/services/users/build_service.rb
index b3b172f9df2..649cf281ab0 100644
--- a/app/services/users/build_service.rb
+++ b/app/services/users/build_service.rb
@@ -14,9 +14,11 @@ module Users
     end
 
     def execute(skip_authorization: false)
+      @skip_authorization = skip_authorization
+
       raise Gitlab::Access::AccessDeniedError unless skip_authorization || can_create_user?
 
-      user_params = build_user_params(skip_authorization: skip_authorization)
+      user_params = build_user_params
       user = User.new(user_params)
 
       if current_user&.admin?
@@ -37,6 +39,8 @@ module Users
 
     private
 
+    attr_reader :skip_authorization
+
     def identity_attributes
       [:extern_uid, :provider]
     end
@@ -102,7 +106,7 @@ module Users
       ]
     end
 
-    def build_user_params(skip_authorization:)
+    def build_user_params
       if current_user&.admin?
         user_params = params.slice(*admin_create_params)
 
@@ -111,10 +115,10 @@ module Users
         end
       else
         allowed_signup_params = signup_params
-        allowed_signup_params << :skip_confirmation if skip_authorization
+        allowed_signup_params << :skip_confirmation if allow_caller_to_request_skip_confirmation?
 
         user_params = params.slice(*allowed_signup_params)
-        if user_params[:skip_confirmation].nil?
+        if assign_skip_confirmation_from_settings?(user_params)
           user_params[:skip_confirmation] = skip_user_confirmation_email_from_setting
         end
 
@@ -136,6 +140,14 @@ module Users
       user_params
     end
 
+    def allow_caller_to_request_skip_confirmation?
+      skip_authorization
+    end
+
+    def assign_skip_confirmation_from_settings?(user_params)
+      user_params[:skip_confirmation].nil?
+    end
+
     def skip_user_confirmation_email_from_setting
       !Gitlab::CurrentSettings.send_user_confirmation_email
     end
@@ -150,4 +162,4 @@ module Users
   end
 end
 
-Users::BuildService.prepend_if_ee('EE::Users::BuildService')
+Users::BuildService.prepend_mod_with('Users::BuildService')
diff --git a/app/services/users/create_service.rb b/app/services/users/create_service.rb
index ec8b3cea664..757ebd783ee 100644
--- a/app/services/users/create_service.rb
+++ b/app/services/users/create_service.rb
@@ -26,4 +26,4 @@ module Users
   end
 end
 
-Users::CreateService.prepend_if_ee('EE::Users::CreateService')
+Users::CreateService.prepend_mod_with('Users::CreateService')
diff --git a/app/services/users/destroy_service.rb b/app/services/users/destroy_service.rb
index 613d2e4ad82..4ec875098fa 100644
--- a/app/services/users/destroy_service.rb
+++ b/app/services/users/destroy_service.rb
@@ -31,7 +31,7 @@ module Users
       end
 
       if !delete_solo_owned_groups && user.solo_owned_groups.present?
-        user.errors[:base] << 'You must transfer ownership or delete groups before you can remove user'
+        user.errors.add(:base, 'You must transfer ownership or delete groups before you can remove user')
         return user
       end
 
@@ -73,4 +73,4 @@ module Users
   end
 end
 
-Users::DestroyService.prepend_if_ee('EE::Users::DestroyService')
+Users::DestroyService.prepend_mod_with('Users::DestroyService')
diff --git a/app/services/users/migrate_to_ghost_user_service.rb b/app/services/users/migrate_to_ghost_user_service.rb
index 1b46edd4d7d..a471f55e644 100644
--- a/app/services/users/migrate_to_ghost_user_service.rb
+++ b/app/services/users/migrate_to_ghost_user_service.rb
@@ -93,4 +93,4 @@ module Users
   end
 end
 
-Users::MigrateToGhostUserService.prepend_if_ee('EE::Users::MigrateToGhostUserService')
+Users::MigrateToGhostUserService.prepend_mod_with('Users::MigrateToGhostUserService')
diff --git a/app/services/users/registrations_build_service.rb b/app/services/users/registrations_build_service.rb
new file mode 100644
index 00000000000..9d7bf0a7e18
--- /dev/null
+++ b/app/services/users/registrations_build_service.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module Users
+  class RegistrationsBuildService < BuildService
+    extend ::Gitlab::Utils::Override
+
+    private
+
+    override :allow_caller_to_request_skip_confirmation?
+    def allow_caller_to_request_skip_confirmation?
+      true
+    end
+
+    override :assign_skip_confirmation_from_settings?
+    def assign_skip_confirmation_from_settings?(user_params)
+      user_params[:skip_confirmation].blank?
+    end
+  end
+end
diff --git a/app/services/users/reject_service.rb b/app/services/users/reject_service.rb
index 0e3eb3e5dde..833c30d9427 100644
--- a/app/services/users/reject_service.rb
+++ b/app/services/users/reject_service.rb
@@ -39,4 +39,4 @@ module Users
   end
 end
 
-Users::RejectService.prepend_if_ee('EE::Users::RejectService')
+Users::RejectService.prepend_mod_with('Users::RejectService')
diff --git a/app/services/users/update_assigned_open_issue_count_service.rb b/app/services/users/update_assigned_open_issue_count_service.rb
new file mode 100644
index 00000000000..2ed05853b2f
--- /dev/null
+++ b/app/services/users/update_assigned_open_issue_count_service.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+module Users
+  # Service class for calculating and caching the number of assigned open issues for a user.
+  class UpdateAssignedOpenIssueCountService
+    attr_accessor :target_user
+
+    def initialize(target_user:)
+      @target_user = target_user
+
+      raise ArgumentError, "Please provide a target user" unless target_user.is_a?(User)
+    end
+
+    def execute
+      value = calculate_count
+      Rails.cache.write(cache_key, value, expires_in: User::COUNT_CACHE_VALIDITY_PERIOD)
+
+      ServiceResponse.success(payload: { count: value })
+    rescue StandardError => e
+      ServiceResponse.error(message: e.message)
+    end
+
+    private
+
+    def cache_key
+      ['users', target_user.id, 'assigned_open_issues_count']
+    end
+
+    def calculate_count
+      IssuesFinder.new(target_user, assignee_id: target_user.id, state: 'opened', non_archived: true).execute.count
+    end
+  end
+end
diff --git a/app/services/users/update_canonical_email_service.rb b/app/services/users/update_canonical_email_service.rb
index e75452f60fd..c4b7a98f60b 100644
--- a/app/services/users/update_canonical_email_service.rb
+++ b/app/services/users/update_canonical_email_service.rb
@@ -7,7 +7,7 @@ module Users
     INCLUDED_DOMAINS_PATTERN = [/gmail.com/].freeze
 
     def initialize(user:)
-      raise ArgumentError.new("Please provide a user") unless user.is_a?(User)
+      raise ArgumentError, "Please provide a user" unless user.is_a?(User)
 
       @user = user
     end
diff --git a/app/services/users/update_service.rb b/app/services/users/update_service.rb
index b69720eefd6..ff08c806319 100644
--- a/app/services/users/update_service.rb
+++ b/app/services/users/update_service.rb
@@ -34,7 +34,7 @@ module Users
     def execute!(*args, &block)
       result = execute(*args, &block)
 
-      raise ActiveRecord::RecordInvalid.new(@user) unless result[:status] == :success
+      raise ActiveRecord::RecordInvalid, @user unless result[:status] == :success
 
       true
     end
@@ -96,4 +96,4 @@ module Users
   end
 end
 
-Users::UpdateService.prepend_if_ee('EE::Users::UpdateService')
+Users::UpdateService.prepend_mod_with('Users::UpdateService')
diff --git a/app/services/users/update_todo_count_cache_service.rb b/app/services/users/update_todo_count_cache_service.rb
index 03ab66bd64a..3407b22e355 100644
--- a/app/services/users/update_todo_count_cache_service.rb
+++ b/app/services/users/update_todo_count_cache_service.rb
@@ -4,31 +4,34 @@ module Users
   class UpdateTodoCountCacheService < BaseService
     QUERY_BATCH_SIZE = 10
 
-    attr_reader :users
+    attr_reader :user_ids
 
-    # users - An array of User objects
-    def initialize(users)
-      @users = users
+    # user_ids - An array of User IDs
+    def initialize(user_ids)
+      @user_ids = user_ids
     end
 
     def execute
-      users.each_slice(QUERY_BATCH_SIZE) do |users_batch|
-        todo_counts = Todo.for_user(users_batch).count_grouped_by_user_id_and_state
+      user_ids.each_slice(QUERY_BATCH_SIZE) do |user_ids_batch|
+        todo_counts = Todo.for_user(user_ids_batch).count_grouped_by_user_id_and_state
 
-        users_batch.each do |user|
-          update_count_cache(user, todo_counts, :done)
-          update_count_cache(user, todo_counts, :pending)
+        user_ids_batch.each do |user_id|
+          update_count_cache(user_id, todo_counts, :done)
+          update_count_cache(user_id, todo_counts, :pending)
         end
       end
     end
 
     private
 
-    def update_count_cache(user, todo_counts, state)
-      count = todo_counts.fetch([user.id, state.to_s], 0)
-      expiration_time = user.count_cache_validity_period
+    def update_count_cache(user_id, todo_counts, state)
+      count = todo_counts.fetch([user_id, state.to_s], 0)
 
-      Rails.cache.write(['users', user.id, "todos_#{state}_count"], count, expires_in: expiration_time)
+      Rails.cache.write(
+        ['users', user_id, "todos_#{state}_count"],
+        count,
+        expires_in: User::COUNT_CACHE_VALIDITY_PERIOD
+      )
     end
   end
 end
diff --git a/app/services/users/upsert_credit_card_validation_service.rb b/app/services/users/upsert_credit_card_validation_service.rb
new file mode 100644
index 00000000000..70a96b3ec6b
--- /dev/null
+++ b/app/services/users/upsert_credit_card_validation_service.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+module Users
+  class UpsertCreditCardValidationService < BaseService
+    def initialize(params)
+      @params = params.to_h.with_indifferent_access
+    end
+
+    def execute
+      ::Users::CreditCardValidation.upsert(@params)
+
+      ServiceResponse.success(message: 'CreditCardValidation was set')
+    rescue ActiveRecord::InvalidForeignKey, ActiveRecord::NotNullViolation => e
+      ServiceResponse.error(message: "Could not set CreditCardValidation: #{e.message}")
+    rescue StandardError => e
+      Gitlab::ErrorTracking.track_exception(e, params: @params, class: self.class.to_s)
+      ServiceResponse.error(message: "Could not set CreditCardValidation: #{e.message}")
+    end
+  end
+end