Allow access to some sidebar controls for owners of fully yanked gems

app/helpers/rubygems_helper.rb

@@ -56,7 +56,7 @@ def unsubscribe_link(rubygem)
 
     link_to t("rubygems.aside.links.unsubscribe"), rubygem_subscription_path(rubygem.slug),
       class: [:toggler, "gem__link", "t-list__item", style], id: "unsubscribe",
-      method: :delete, remote: true
+      method: :delete
   end
 
   def change_diff_link(rubygem, latest_version)

app/views/rubygems/_aside_yanked.html.erb

@@ -0,0 +1,23 @@
+<div class="gem__aside l-col--r--pad">
+  <% if @adoption %>
+    <%= link_to "adoption", rubygem_adoptions_path(@rubygem.slug), class: "adoption__tag" %>
+  <% end %>
+
+  <% if @rubygem.metadata_mfa_required? %>
+    <h2 class="gem__ruby-version__heading t-list__heading">
+      <%= t('.requires_mfa') %>:
+      <span class="gem__ruby-version">
+        true
+      </span>
+    </h2>
+  <% end %>
+  <div class="t-list__items">
+    <%= unsubscribe_link(@rubygem) %>
+    <%= ownership_link(@rubygem) if policy(@rubygem).show_unconfirmed_ownerships? %>
+    <%= rubygem_trusted_publishers_link(@rubygem) if policy(@rubygem).configure_trusted_publishers? %>
+    <%= oidc_api_key_role_links(@rubygem) if policy(@rubygem).configure_oidc? %>
+    <%= resend_owner_confirmation_link(@rubygem) if @rubygem.unconfirmed_ownership?(current_user) %>
+    <%= rubygem_adoptions_link(@rubygem) if policy(@rubygem).show_adoption? %>
+    <%= rubygem_security_events_link(@rubygem) if policy(@rubygem).show_events? %>
+  </div>
+</div>

app/views/rubygems/show_yanked.html.erb

@@ -19,4 +19,6 @@
       <%= render partial: "rubygems/gem_members", locals: { latest_version: @latest_version, rubygem: @rubygem } %>
     <% end %>
   </div>
+
+  <%= render "rubygems/aside_yanked" %>
 </div>

config/locales/en.yml

@@ -739,8 +739,8 @@ en:
     show_yanked:
       not_hosted_notice: This gem is not currently hosted on RubyGems.org. Yanked versions of this gem may already exist.
       reserved_namespace_html:
-        one: This gem previously existed, but has been removed by its owner. The RubyGems.org team has reserved this gem name for 1 more day. After that time is up, anyone will be able to claim this gem name using gem push. <br/> If you are the previous owner of this gem, you can change ownership of this gem using the gem owner command. You can also create new versions of this gem using gem push.
-        other: This gem previously existed, but has been removed by its owner. The RubyGems.org team has reserved this gem name for %{count} more days. After that time is up, anyone will be able to claim this gem name using gem push. <br/> If you are the previous owner of this gem, you can change ownership of this gem using the gem owner command. You can also create new versions of this gem using gem push.
+        one: This gem previously existed, but has been removed by its owner. The RubyGems.org team has reserved this gem name for 1 more day. After that time is up, anyone will be able to claim this gem name using gem push. <br/><br/> If you are the previous owner of this gem, you can change ownership of this gem using the gem owner command or create new versions of this gem using gem push.
+        other: This gem previously existed, but has been removed by its owner. The RubyGems.org team has reserved this gem name for %{count} more days. After that time is up, anyone will be able to claim this gem name using gem push. <br/><br/> If you are the previous owner of this gem, you can change ownership of this gem using the gem owner command or create new versions of this gem using gem push.
     security_events:
       title: Security Events
       description_html: "This page shows the security events that have occurred on %{gem}. If you see any suspicious activity, please <a href='mailto:[email protected]'>contact support</a>."

test/integration/rubygems_test.rb

@@ -28,4 +28,29 @@ class RubygemsTest < ActionDispatch::IntegrationTest
 
     assert page.has_content? "Provenance"
   end
+
+  test "GET to show for a fully yanked gem as owner" do
+    user = create(:user, remember_token_expires_at: Gemcutter::REMEMBER_FOR.from_now)
+    rubygem = create(:rubygem, owners: [user], number: "1.0.0", created_at: 2.months.ago)
+    version = rubygem.versions.sole
+    user.deletions.create!(version:)
+    rubygem.reload
+
+    assert_predicate rubygem.public_versions.to_a, :empty?
+
+    get "/gems/#{rubygem.name}"
+
+    assert page.has_content? "This gem previously existed, but has been removed by its owner."
+    refute page.has_link? "Owners"
+    refute page.has_link? "Trusted publishers"
+    refute page.has_link? "Security Events"
+
+    post session_path(session: { who: user.handle, password: PasswordHelpers::SECURE_TEST_PASSWORD })
+
+    get "/gems/#{rubygem.name}"
+
+    assert page.has_link? "Owners"
+    assert page.has_link? "Trusted publishers"
+    assert page.has_link? "Security Events"
+  end
 end