Refactor to use presenter

Refacotr project or group specific `if` logic to be contained within
each presenter instead.

Also add :override to ensure super method exists.

app/presenters/clusterable_presenter.rb

@@ -44,7 +44,11 @@ class ClusterablePresenter < Gitlab::View::Presenter::Delegated
     raise NotImplementedError
   end
 
-  def project?
+  def empty_state_help_text
+    nil
+  end
+
+  def learn_more_link
     raise NotImplementedError
   end
 end

app/presenters/group_clusterable_presenter.rb

 # frozen_string_literal: true
 
 class GroupClusterablePresenter < ClusterablePresenter
+  extend ::Gitlab::Utils::Override
+  include ActionView::Helpers::UrlHelper
+
+  override :cluster_status_cluster_path
   def cluster_status_cluster_path(cluster, params = {})
     cluster_status_group_cluster_path(clusterable, cluster, params)
   end
 
+  override :install_applications_cluster_path
   def install_applications_cluster_path(cluster, application)
     install_applications_group_cluster_path(clusterable, cluster, application)
   end
 
+  override :cluster_path
   def cluster_path(cluster, params = {})
     group_cluster_path(clusterable, cluster, params)
   end
 
-  def project?
-    false
+  override :empty_state_help_text
+  def empty_state_help_text
+    s_('ClusterIntegration|Adding an integration to your group will share the cluster across all your projects.')
+  end
+
+  override :learn_more_link
+  def learn_more_link
+    link_to(s_('ClusterIntegration|Learn more about group Kubernetes clusters'), help_page_path('user/project/clusters/index'), target: '_blank', rel: 'noopener noreferrer')
   end
 end

app/presenters/project_clusterable_presenter.rb

 # frozen_string_literal: true
 
 class ProjectClusterablePresenter < ClusterablePresenter
+  extend ::Gitlab::Utils::Override
+  include ActionView::Helpers::UrlHelper
+
+  override :cluster_status_cluster_path
   def cluster_status_cluster_path(cluster, params = {})
     cluster_status_project_cluster_path(clusterable, cluster, params)
   end
 
+  override :install_applications_cluster_path
   def install_applications_cluster_path(cluster, application)
     install_applications_project_cluster_path(clusterable, cluster, application)
   end
 
+  override :cluster_path
   def cluster_path(cluster, params = {})
     project_cluster_path(clusterable, cluster, params)
   end
 
-  def project?
-    true
+  override :learn_more_link
+  def learn_more_link
+    link_to(s_('ClusterIntegration|Learn more about Kubernetes'), help_page_path('user/project/clusters/index'), target: '_blank', rel: 'noopener noreferrer')
   end
 end

app/views/clusters/clusters/_empty_state.html.haml

@@ -6,11 +6,8 @@
       %h4.text-center= s_('ClusterIntegration|Integrate Kubernetes cluster automation')
       %p
         = s_('ClusterIntegration|Kubernetes clusters allow you to use review apps, deploy your applications, run your pipelines, and much more in an easy way.')
-        - if clusterable.project?
-          = link_to(s_('ClusterIntegration|Learn more about Kubernetes'), help_page_path('user/project/clusters/index'), target: '_blank', rel: 'noopener noreferrer')
-        - else
-          = s_('ClusterIntegration|Adding an integration to your group will share the cluster across all your projects.')
-          = link_to(s_('ClusterIntegration|Learn more about group Kubernetes clusters'), help_page_path('user/project/clusters/index'), target: '_blank', rel: 'noopener noreferrer')
+        = clusterable.empty_state_help_text
+        = clusterable.learn_more_link
 
       - if clusterable.can_create_cluster?
         .text-center

app/views/clusters/clusters/_sidebar.html.haml

-- clusters_help_url = help_page_path('user/project/clusters/index.md')
-- help_link_start = "<a href=\"%{url}\" target=\"_blank\" rel=\"noopener noreferrer\">".html_safe
-- help_link_end = '</a>'.html_safe
-%h4.prepend-top-0
-  = s_('ClusterIntegration|Add a Kubernetes cluster integration')
-- if clusterable.project?
-  %p
-    = s_('ClusterIntegration|With a Kubernetes cluster associated to this project, you can use review apps, deploy your applications, run your pipelines, and much more in an easy way.')
-  %p
-    = s_('ClusterIntegration|Learn more about %{help_link_start}Kubernetes%{help_link_end}.').html_safe % { help_link_start: help_link_start % { url: clusters_help_url }, help_link_end: help_link_end }
-- else
-  %p
-    = s_('ClusterIntegration|Adding a Kubernetes cluster to your group will automatically share the cluster across all your projects. Use review apps, deploy your applications, and easily run your pipelines for all projects using the same cluster.')

app/views/groups/clusters/_sidebar.html.haml

+%h4.prepend-top-0
+  = s_('ClusterIntegration|Add a Kubernetes cluster integration')
+%p
+  = s_('ClusterIntegration|Adding a Kubernetes cluster to your group will automatically share the cluster across all your projects.')
+  = s_('ClusterIntegration|Use review apps, deploy your applications, and easily run your pipelines for all projects using the same cluster.')

app/views/projects/clusters/_sidebar.html.haml

+- clusters_help_url = help_page_path('user/project/clusters/index.md')
+- help_link_start = "<a href=\"%{url}\" target=\"_blank\" rel=\"noopener noreferrer\">".html_safe
+- help_link_end = '</a>'.html_safe
+%h4.prepend-top-0
+  = s_('ClusterIntegration|Add a Kubernetes cluster integration')
+%p
+  = s_('ClusterIntegration|With a Kubernetes cluster associated to this project, you can use review apps, deploy your applications, run your pipelines, and much more in an easy way.')
+%p
+  = s_('ClusterIntegration|Learn more about %{help_link_start}Kubernetes%{help_link_end}.').html_safe % { help_link_start: help_link_start % { url: clusters_help_url }, help_link_end: help_link_end }

locale/gitlab.pot

@@ -1367,7 +1367,7 @@ msgstr ""
 msgid "ClusterIntegration|Add a Kubernetes cluster integration"
 msgstr ""
 
-msgid "ClusterIntegration|Adding a Kubernetes cluster to your group will automatically share the cluster across all your projects. Use review apps, deploy your applications, and easily run your pipelines for all projects using the same cluster."
+msgid "ClusterIntegration|Adding a Kubernetes cluster to your group will automatically share the cluster across all your projects."
 msgstr ""
 
 msgid "ClusterIntegration|Adding an integration to your group will share the cluster across all your projects."
@@ -1703,6 +1703,9 @@ msgstr ""
 msgid "ClusterIntegration|Token"
 msgstr ""
 
+msgid "ClusterIntegration|Use review apps, deploy your applications, and easily run your pipelines for all projects using the same cluster."
+msgstr ""
+
 msgid "ClusterIntegration|Validating project billing status"
 msgstr ""