Support blueprintUE embedding

lib/qiita/markdown.rb

@@ -19,6 +19,7 @@
 require "qiita/markdown/embed/docswell"
 require "qiita/markdown/embed/figma"
 require "qiita/markdown/embed/stack_blitz"
+require "qiita/markdown/embed/blueprint_ue"
 require "qiita/markdown/transformers/filter_attributes"
 require "qiita/markdown/transformers/filter_script"
 require "qiita/markdown/transformers/filter_iframe"

lib/qiita/markdown/embed/blueprint_ue.rb

@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+module Qiita
+  module Markdown
+    module Embed
+      module BlueprintUe
+        SCRIPT_HOST = "blueprintue.com"
+      end
+    end
+  end
+end

lib/qiita/markdown/transformers/filter_iframe.rb

@@ -12,6 +12,7 @@ class FilterIframe
           Embed::Figma::SCRIPT_HOST,
           Embed::GoogleDrive::SCRIPT_HOST,
           Embed::StackBlitz::SCRIPT_HOST,
+          Embed::BlueprintUe::SCRIPT_HOST,
         ].flatten.freeze
 
         def self.call(**args)

spec/qiita/markdown/processor_spec.rb

@@ -1784,6 +1784,43 @@
         end
       end
 
+      context "with HTML embed code for blueprintUE" do
+        shared_examples "embed code blueprintUE example" do
+          let(:markdown) do
+            <<~MARKDOWN
+              <iframe src="#{url}" width="800" height="600" frameborder="0" allowfullscreen="true"></iframe>
+            MARKDOWN
+          end
+          let(:url) { "#{scheme}//blueprintue.com/embed/example" }
+
+          if allowed
+            it "does not sanitize embed code" do
+              should eq <<~HTML
+                <iframe src="#{url}" width="800" height="600" frameborder="0" allowfullscreen="true"></iframe>
+              HTML
+            end
+          else
+            it "forces width attribute on iframe" do
+              should eq <<~HTML
+                <iframe src="#{url}" width="100%" height="600" frameborder="0" allowfullscreen="true"></iframe>
+              HTML
+            end
+          end
+        end
+
+        context "with scheme" do
+          let(:scheme) { "https:" }
+
+          include_examples "embed code blueprintUE example"
+        end
+
+        context "without scheme" do
+          let(:scheme) { "" }
+
+          include_examples "embed code blueprintUE example"
+        end
+      end
+
       context "with embed code for Tweet" do
         let(:markdown) do
           <<-MARKDOWN.strip_heredoc