Revert "Squashed commit of the following:"

This reverts commit 7d2409b.

.rubocop.yml

@@ -210,17 +210,3 @@ Performance/Casecmp:
   Description: 'Use `casecmp` rather than `downcase ==`.'
   Reference: 'https://github.com/JuanitoFatas/fast-ruby#stringcasecmp-vs-stringdowncase---code'
   Enabled: false
-
-# RSpec tests
-Style/NumericPredicate:
-  Description: >-
-                 Checks for the use of predicate- or comparison methods for
-                 numeric comparisons.
-  StyleGuide: '#predicate-methods'
-  # This will change to a new method call which isn't guaranteed to be on the
-  # object. Switching these methods has to be done with knowledge of the types
-  # of the variables which rubocop doesn't have.
-  AutoCorrect: false
-  Enabled: true
-  Exclude:
-    - "**/*_spec.rb"

app/assets/javascripts/app/controllers/_ui_element/ticket_perform_action.coffee

@@ -32,16 +32,6 @@ class App.UiElement.ticket_perform_action
                 config.operator = ['add', 'remove']
               elements["#{groupKey}.#{config.name}"] = config
 
-    # add ticket deletion action
-    elements['ticket.action'] =
-      name: 'action'
-      display: 'Action'
-      tag: 'select'
-      null: false
-      translate: true
-      options:
-        delete: 'delete'
-
     [defaults, groups, elements]
 
   @render: (attribute, params = {}) ->

app/models/karma/activity_log.rb

@@ -5,14 +5,6 @@ class Karma::ActivityLog < ApplicationModel
 
   self.table_name = 'karma_activity_logs'
 
-=begin
-
-add karma activity log of an object
-
-  Karma::ActivityLog.add('ticket create', User.find(1), 'Ticket', 123)
-
-=end
-
   def self.add(action, user, object, o_id, force = false)
     activity = Karma::Activity.lookup(name: action)
 
@@ -55,22 +47,6 @@ def self.add(action, user, object, o_id, force = false)
     true
   end
 
-=begin
-
-remove whole karma activity log of an object
-
-  Karma::ActivityLog.remove('Ticket', 123)
-
-=end
-
-  def self.remove(object_name, o_id)
-    object_id = ObjectLookup.by_name(object_name)
-    Karma::ActivityLog.where(
-      object_lookup_id: object_id,
-      o_id: o_id,
-    ).destroy_all
-  end
-
   def self.latest(user, limit = 12)
     result = []
     logs = Karma::ActivityLog.where(user_id: user.id).order(id: :desc).limit(limit)

app/models/link.rb

@@ -4,8 +4,6 @@ class Link < ApplicationModel
   belongs_to :link_type,    class_name: 'Link::Type'
   belongs_to :link_object,  class_name: 'Link::Object'
 
-  after_destroy :touch_link_references
-
   @map = {
     'normal' => 'normal',
     'parent' => 'child',
@@ -133,65 +131,52 @@ def self.remove(data)
       linktype = link_type_get(name: data[:link_type])
       data[:link_type_id] = linktype.id
     end
-    Link.where(
+    links = Link.where(
       link_type_id: data[:link_type_id],
       link_object_source_id: data[:link_object_source_id],
       link_object_source_value: data[:link_object_source_value],
       link_object_target_id: data[:link_object_target_id],
       link_object_target_value: data[:link_object_target_value]
-    ).destroy_all
+    )
+
+    # touch references
+    links.each { |link|
+      link.destroy
+      touch_reference_by_params(
+        object: Link::Object.lookup(id: link.link_object_source_id).name,
+        o_id: link.link_object_source_value,
+      )
+      touch_reference_by_params(
+        object: Link::Object.lookup(id: link.link_object_target_id).name,
+        o_id: link.link_object_target_value,
+      )
+    }
 
     # from the other site
     if data.key?(:link_type)
       linktype = link_type_get(name: @map[ data[:link_type] ])
       data[:link_type_id] = linktype.id
     end
-
-    Link.where(
+    links = Link.where(
       link_type_id: data[:link_type_id],
       link_object_target_id: data[:link_object_source_id],
       link_object_target_value: data[:link_object_source_value],
       link_object_source_id: data[:link_object_target_id],
       link_object_source_value: data[:link_object_target_value]
-    ).destroy_all
-  end
-
-=begin
-
-   Link.remove_all(
-    link_object: 'Ticket',
-    link_object_value: 6,
-  )
-
-=end
-
-  def self.remove_all(data)
-    if data.key?(:link_object)
-      linkobject = link_object_get(name: data[:link_object])
-      data[:link_object_id] = linkobject.id
-    end
-
-    Link.where(
-      link_object_target_id: data[:link_object_id],
-      link_object_target_value: data[:link_object_value],
-    ).destroy_all
-    Link.where(
-      link_object_source_id: data[:link_object_id],
-      link_object_source_value: data[:link_object_value],
-    ).destroy_all
-
-    true
-  end
-
-  def touch_link_references
-    Link.touch_reference_by_params(
-      object: Link::Object.lookup(id: link_object_source_id).name,
-      o_id: link_object_source_value,
-    )
-    Link.touch_reference_by_params(
-      object: Link::Object.lookup(id: link_object_target_id).name,
-      o_id: link_object_target_value,
     )
+
+    # touch references
+    links.each { |link|
+      link.destroy
+      touch_reference_by_params(
+        object: Link::Object.lookup(id: link.link_object_source_id).name,
+        o_id: link.link_object_source_value,
+      )
+      touch_reference_by_params(
+        object: Link::Object.lookup(id: link.link_object_target_id).name,
+        o_id: link.link_object_target_value,
+      )
+    }
   end
 
   def self.link_type_get(data)

app/models/ticket.rb

@@ -7,9 +7,6 @@ class Ticket < ApplicationModel
   include HasHistory
   include HasTags
   include HasSearchIndexBackend
-  include HasOnlineNotifications
-  include HasKarmaActivityLog
-  include HasLinks
 
   include Ticket::Escalation
   include Ticket::Subject
@@ -26,6 +23,7 @@ class Ticket < ApplicationModel
   after_create   :check_escalation_update
   before_update  :check_defaults, :check_title, :reset_pending_time
   after_update   :check_escalation_update
+  before_destroy :destroy_dependencies
 
   validates :group_id, presence: true
 
@@ -57,7 +55,7 @@ class Ticket < ApplicationModel
                              :preferences
 
   belongs_to    :group,                  class_name: 'Group'
-  has_many      :articles,               class_name: 'Ticket::Article', after_add: :cache_update, after_remove: :cache_update, dependent: :destroy
+  has_many      :articles,               class_name: 'Ticket::Article', after_add: :cache_update, after_remove: :cache_update
   has_many      :ticket_time_accounting, class_name: 'Ticket::TimeAccounting', dependent: :destroy
   belongs_to    :organization,           class_name: 'Organization'
   belongs_to    :state,                  class_name: 'Ticket::State'
@@ -750,19 +748,6 @@ def self.selector2sql(selectors, current_user = nil)
 
   def perform_changes(perform, perform_origin, item = nil, current_user_id = nil)
     logger.debug "Perform #{perform_origin} #{perform.inspect} on Ticket.find(#{id})"
-
-    # if the configuration contains the deletion of the ticket then
-    # we skip all other ticket changes because they does not matter
-    if perform['ticket.action'].present? && perform['ticket.action']['value'] == 'delete'
-      perform.each do |key, _value|
-        (object_name, attribute) = key.split('.', 2)
-        next if object_name != 'ticket'
-        next if attribute == 'action'
-
-        perform.delete(key)
-      end
-    end
-
     changed = false
     perform.each do |key, value|
       (object_name, attribute) = key.split('.', 2)
@@ -921,16 +906,6 @@ def perform_changes(perform, perform_origin, item = nil, current_user_id = nil)
         next
       end
 
-      # delete ticket
-      if key == 'ticket.action'
-        next if value['value'].blank?
-        next if value['value'] != 'delete'
-
-        destroy
-
-        next
-      end
-
       # lookup pre_condition
       if value['pre_condition']
         if value['pre_condition'] =~ /^not_set/
@@ -1071,6 +1046,15 @@ def check_escalation_update
     true
   end
 
+  def destroy_dependencies
+
+    # delete articles
+    articles.destroy_all
+
+    # destroy online notifications
+    OnlineNotification.remove(self.class.to_s, id)
+  end
+
   def set_default_state
     return if state_id