Add bin and edit workflow

bin/gems/html-proofer-5.0.10/lib/html_proofer/check/open_graph.rb

@@ -0,0 +1,46 @@
+# frozen_string_literal: true
+
+module HTMLProofer
+  class Check
+    class OpenGraph < HTMLProofer::Check
+      def run
+        @html.css('meta[property="og:url"], meta[property="og:image"]').each do |node|
+          @open_graph = create_element(node)
+
+          next if @open_graph.ignore?
+
+          # does the open_graph exist?
+          if missing_content?
+            add_failure("open graph has no content attribute", element: @open_graph)
+          elsif empty_content?
+            add_failure("open graph content attribute is empty", element: @open_graph)
+          elsif !@open_graph.url.valid?
+            add_failure("#{@open_graph.src} is an invalid URL", element: @open_graph)
+          elsif @open_graph.url.protocol_relative?
+            add_failure(
+              "open graph link #{@open_graph.url} is a protocol-relative URL, use explicit https:// instead",
+              element: @open_graph,
+            )
+          elsif @open_graph.url.remote?
+            add_to_external_urls(@open_graph.url, @open_graph.line)
+          else
+            add_failure(
+              "internal open graph #{@open_graph.url.raw_attribute} does not exist",
+              element: @open_graph,
+            ) unless @open_graph.url.exists?
+          end
+        end
+
+        external_urls
+      end
+
+      private def missing_content?
+        @open_graph.node["content"].nil?
+      end
+
+      private def empty_content?
+        @open_graph.node["content"].empty?
+      end
+    end
+  end
+end