Display the Advanced Search as disabled when a ref is specified

This commit adds some context on the search page when the
repository_ref parameter is present.

app/assets/stylesheets/pages/search.scss

@@ -281,6 +281,10 @@ input[type='checkbox']:hover {
   }
 }
 
+.ref-truncated {
+  @include str-truncated(10em);
+}
+
 // Disable webkit input icons, link to solution: https://stackoverflow.com/questions/9421551/how-do-i-remove-all-default-webkit-search-field-styling
 /* stylelint-disable property-no-vendor-prefix */
 input[type='search']::-webkit-search-decoration,

app/views/search/show.html.haml

@@ -6,10 +6,9 @@
   - page_description(_("%{count} %{scope} for term '%{term}'") % { count: @search_results.formatted_count(@scope), scope: @scope, term: @search_term })
   - page_card_attributes("Namespace" => @group&.full_path, "Project" => @project&.full_path)
 
-.page-title-holder.d-sm-flex.align-items-sm-center
-  %h1.page-title<
-    = _('Search')
-  = render_if_exists 'search/form_elasticsearch', attrs: { class: 'ml-sm-auto' }
+.page-title-holder.d-flex.flex-wrap.justify-content-between
+  %h1.page-title.mr-3= _('Search')
+  = render_if_exists 'search/form_elasticsearch', attrs: { class: 'mb-2 mb-sm-0 align-self-center' }
 
 .gl-mt-3
   = render 'search/form'

ee/app/helpers/ee/search_helper.rb

@@ -4,6 +4,7 @@ module EE
     extend ::Gitlab::Utils::Override
 
     SWITCH_TO_BASIC_SEARCHABLE_TABS = %w[projects issues merge_requests milestones users epics].freeze
+    PLACEHOLDER = '_PLACEHOLDER_'
 
     override :search_filter_input_options
     def search_filter_input_options(type, placeholder = _('Search or filter results...'))
@@ -70,6 +71,40 @@ module EE
       Truncato.truncate(search_highlight[issue.id].description.first, count_tags: false, count_tail: false, max_length: 200).html_safe
     end
 
+    def advanced_search_status_marker(project)
+      ref = params[:repository_ref]
+      enabled = project.nil? || ref.blank? || ref == project.default_branch
+
+      tags = {}
+      tags[:doc_link_start], tags[:doc_link_end] = tag.a(PLACEHOLDER,
+                                                         href: help_page_path('user/search/advanced_search_syntax.md'),
+                                                         rel: :noopener,
+                                                         target: '_blank')
+                                                     .split(PLACEHOLDER)
+
+      unless enabled
+        tags[:ref_elem] = tag.a(href: '#', class: 'ref-truncated has-tooltip', data: { title: ref }) do
+          tag.code(ref, class: 'gl-white-space-nowrap')
+        end
+        tags[:default_branch] = tag.code(project.default_branch)
+        tags[:default_branch_link_start], tags[:default_branch_link_end] = link_to(PLACEHOLDER,
+                                                                                   search_path(safe_params.except(:repository_ref)),
+                                                                                   data: { testid: 'es-search-default-branch' })
+                                                                             .split(PLACEHOLDER)
+      end
+
+      # making sure all the tags are marked `html_safe`
+      message =
+        if enabled
+          _('%{doc_link_start}Advanced search%{doc_link_end} is enabled.')
+        else
+          _('%{doc_link_start}Advanced search%{doc_link_end} is disabled since %{ref_elem} is not the default branch; %{default_branch_link_start}search on %{default_branch} instead%{default_branch_link_end}.')
+        end % tags.transform_values(&:html_safe)
+
+      # wrap it inside a `div` for testing purposes
+      tag.div(message.html_safe, data: { testid: 'es-status-marker', enabled: enabled })
+    end
+
     private
 
     def search_multiple_assignees?(type)

ee/app/views/search/_form_elasticsearch.html.haml

 - if search_service.use_elasticsearch?
   .form-text.text-muted{ **local_assigns.fetch(:attrs, {}) }
-    = link_to _('Advanced search functionality'), help_page_path('user/search/advanced_search_syntax.md'), target: '_blank'
-    = _('is enabled.')
+    = advanced_search_status_marker(@project)

ee/changelogs/unreleased/250854-search-page-shows-advanced-search-as-enabled-even-outside-of-th.yml

+---
+title: Show that Advanced Search is disabled when searching in a specific ref.
+merge_request: 43612
+author:
+type: fixed

ee/spec/features/search/elastic/project_search_spec.rb

@@ -8,14 +8,16 @@ RSpec.describe 'Project elastic search', :js, :elastic do
 
   before do
     stub_ee_application_setting(elasticsearch_search: true, elasticsearch_indexing: true)
-
-    project.add_maintainer(user)
-    sign_in(user)
-
-    visit project_path(project)
   end
 
   describe 'searching' do
+    before do
+      project.add_maintainer(user)
+      sign_in(user)
+
+      visit project_path(project)
+    end
+
     it 'finds issues', :sidekiq_inline do
       create(:issue, project: project, title: 'Test searching for an issue')
       ensure_elasticsearch_index!
@@ -84,6 +86,44 @@ RSpec.describe 'Project elastic search', :js, :elastic do
       expect(page).to have_selector('.results', text: 'def username_regex')
     end
   end
+
+  describe 'displays Advanced Search status' do
+    before do
+      sign_in(user)
+
+      visit search_path(project_id: project.id, repository_ref: repository_ref)
+    end
+
+    context "when `repository_ref` isn't the default branch" do
+      let(:repository_ref) { Gitlab::Git::BLANK_SHA }
+
+      it 'displays that advanced search is disabled' do
+        expect(page).to have_selector('[data-testid="es-status-marker"][data-enabled="false"]')
+
+        default_branch_link = page.find('a[data-testid="es-search-default-branch"]')
+        params = CGI.parse(URI.parse(default_branch_link[:href]).query)
+
+        expect(default_branch_link).to have_content(project.default_branch)
+        expect(params).not_to include(:repository_ref)
+      end
+    end
+
+    context "when `repository_ref` is unset" do
+      let(:repository_ref) { "" }
+
+      it 'displays that advanced search is enabled' do
+        expect(page).to have_selector('[data-testid="es-status-marker"][data-enabled="true"]')
+      end
+    end
+
+    context "when `repository_ref` is the default branch" do
+      let(:repository_ref) { project.default_branch }
+
+      it 'displays that advanced search is enabled' do
+        expect(page).to have_selector('[data-testid="es-status-marker"][data-enabled="true"]')
+      end
+    end
+  end
 end
 
 RSpec.describe 'Project elastic search redactions', :elastic do

locale/gitlab.pot

@@ -447,6 +447,12 @@ msgstr ""
 msgid "%{description}- Sentry event: %{errorUrl}- First seen: %{firstSeen}- Last seen: %{lastSeen} %{countLabel}: %{count}%{userCountLabel}: %{userCount}"
 msgstr ""
 
+msgid "%{doc_link_start}Advanced search%{doc_link_end} is disabled since %{ref_elem} is not the default branch; %{default_branch_link_start}search on %{default_branch} instead%{default_branch_link_end}."
+msgstr ""
+
+msgid "%{doc_link_start}Advanced search%{doc_link_end} is enabled."
+msgstr ""
+
 msgid "%{due_date} (Past due)"
 msgstr ""
 
@@ -2195,9 +2201,6 @@ msgstr ""
 msgid "Advanced permissions, Large File Storage and Two-Factor authentication settings."
 msgstr ""
 
-msgid "Advanced search functionality"
-msgstr ""
-
 msgid "After a successful password update you will be redirected to login screen."
 msgstr ""
 
@@ -30517,9 +30520,6 @@ msgstr ""
 msgid "is blocked by"
 msgstr ""
 
-msgid "is enabled."
-msgstr ""
-
 msgid "is invalid because there is downstream lock"
 msgstr ""