Extract generation of js_code into module (#1169)

lib/react_on_rails.rb

@@ -11,6 +11,7 @@
 require "react_on_rails/version_checker"
 require "react_on_rails/configuration"
 require "react_on_rails/server_rendering_pool"
+require "react_on_rails/server_rendering_js_code"
 require "react_on_rails/engine"
 require "react_on_rails/react_component/render_options"
 require "react_on_rails/version_syntax_converter"

lib/react_on_rails/helper.rb

@@ -431,22 +431,13 @@ def server_rendered_react_component(render_options)
       #
       # Read more here: http://timelessrepo.com/json-isnt-a-javascript-subset
 
-      # rubocop:disable Layout/IndentHeredoc
-      js_code = <<-JS
-(function() {
-  var railsContext = #{rails_context(server_side: true).to_json};
-#{initialize_redux_stores}
-  var props = #{props_string(props).gsub("\u2028", '\u2028').gsub("\u2029", '\u2029')};
-  return ReactOnRails.serverRenderReactComponent({
-    name: '#{react_component_name}',
-    domNodeId: '#{render_options.dom_id}',
-    props: props,
-    trace: #{render_options.trace},
-    railsContext: railsContext
-  });
-})()
-      JS
-      # rubocop:enable Layout/IndentHeredoc
+      js_code = ReactOnRails::ServerRenderingJsCode.server_rendering_component_js_code(
+        props_string: props_string(props).gsub("\u2028", '\u2028').gsub("\u2029", '\u2029'),
+        rails_context: rails_context(server_side: true).to_json,
+        redux_stores: initialize_redux_stores,
+        react_component_name: react_component_name,
+        render_options: render_options
+      )
 
       begin
         result = ReactOnRails::ServerRenderingPool.server_render_js_with_console_logging(js_code, render_options)

lib/react_on_rails/server_rendering_js_code.rb

@@ -0,0 +1,42 @@
+# frozen_string_literal: true
+
+module ReactOnRails
+  module ServerRenderingJsCode
+    class << self
+      def js_code_renderer
+        @js_code_renderer ||= if ReactOnRails::Utils.react_on_rails_pro?
+                                ReactOnRailsPro::ServerRenderingJsCode
+                              else
+                                self
+                              end
+      end
+
+      def server_rendering_component_js_code(
+        props_string: nil,
+        rails_context: nil,
+        redux_stores: nil,
+        react_component_name: nil,
+        render_options: nil
+      )
+        js_code_renderer.render(props_string, rails_context, redux_stores, react_component_name, render_options)
+      end
+
+      def render(props_string, rails_context, redux_stores, react_component_name, render_options)
+        <<-JS
+        (function() {
+          var railsContext = #{rails_context};
+        #{redux_stores}
+          var props = #{props_string};
+          return ReactOnRails.serverRenderReactComponent({
+            name: '#{react_component_name}',
+            domNodeId: '#{render_options.dom_id}',
+            props: props,
+            trace: #{render_options.trace},
+            railsContext: railsContext
+          });
+        })()
+        JS
+      end
+    end
+  end
+end