Added link/PreviewCard search to search

• Added:
- link/PreviewCard search to search

app/services/search_service.rb

@@ -19,6 +19,7 @@ class SearchService < BaseService
         results[:accounts] = perform_accounts_search! if account_searchable?
         results[:statuses] = perform_statuses_search! if full_text_searchable? && !account.nil?
         results[:hashtags] = perform_hashtags_search! if hashtag_searchable? && !account.nil?
+        results[:links] = perform_links_search! if !account.nil?
         results[:groups] = perform_groups_search!
       end
     end
@@ -45,6 +46,14 @@ class SearchService < BaseService
     )
   end
 
+  def perform_links_search!
+    PreviewCard.search_for(
+      @query.gsub(/\A#/, ''),
+      @limit,
+      @offset
+    )
+  end
+
   def perform_statuses_search!
     definition = StatusesIndex.filter(term: { searchable_by: @account.id })
                               .query(multi_match: { type: 'most_fields', query: @query, operator: 'and', fields: %w(text text.stemmed) })
@@ -79,7 +88,7 @@ class SearchService < BaseService
   end
 
   def default_results
-    { accounts: [], hashtags: [], statuses: [] }
+    { accounts: [], hashtags: [], statuses: [], links: [], groups: [] }
   end
 
   def url_query?