Extract link to toggle selection to a component

app/components/admin/proposals/toggle_selection_component.html.erb

@@ -0,0 +1 @@
+<%= link_to_toggle_proposal_selection %>

app/components/admin/proposals/toggle_selection_component.rb

@@ -0,0 +1,26 @@
+class Admin::Proposals::ToggleSelectionComponent < ApplicationComponent
+  attr_reader :proposal
+
+  def initialize(proposal)
+    @proposal = proposal
+  end
+
+  def link_to_toggle_proposal_selection
+    if proposal.selected?
+      button_text = t("admin.proposals.index.selected")
+      html_class = "button expanded"
+    else
+      button_text = t("admin.proposals.index.select")
+      html_class = "button hollow expanded"
+    end
+
+    case proposal.class.to_s
+    when "Proposal"
+      path = toggle_selection_admin_proposal_path(proposal)
+    when "Legislation::Proposal"
+      path = toggle_selection_admin_legislation_process_proposal_path(proposal.process, proposal)
+    end
+
+    link_to button_text, path, remote: true, method: :patch, class: html_class
+  end
+end