added stimulus controller

frontend/javascript/controllers/reading_controller.js

@@ -0,0 +1,6 @@
+import { Controller } from "@hotwired/stimulus"
+export default class extends Controller {
+  connect() {
+    console.log("Hello, Stimulus!", this.element)
+  }
+}

plugins/builders/books.rb

@@ -10,6 +10,7 @@ def build
   def add_layout_to_book_chapters
     site.collections.books.resources.each do |chapter|
       chapter.data.layout = "default"
+      chapter.content = "#{chapter.content}\n#{stimulus_controller("reading", values: {chapter: 1})}"
     end
   end
 
@@ -38,4 +39,11 @@ def create_chapters_list_for(book)
 </ul>
     HTML
   end
+
+  def stimulus_controller(name, values: {})
+    values = values.map { |k, v| "data-#{name}-#{k}-value='#{v}'" }.join(", ")
+    <<-HTML
+<div data-controller='#{name}' #{values}></div>
+    HTML
+  end
 end

src/_books/book-one/01-introduction.md

@@ -2,4 +2,5 @@
 title: "Introduction"
 ---
 
-This is how it works
+# This is how it works
+Are you sure?

src/books.erb

@@ -3,7 +3,7 @@ layout: default
 ---
 <h1>HI BRo</h1>
 
-<ul>
+<ul data-controller="bookmark">
   <% book_names = book_ids = site.collections.books.resources.map {
     |b| b.id.split("_books/").last.split("/").first.titlecase
   }.uniq %>