@startuml

class book::MDBook {
  root
  dest
  src
  theme_path
  title
  author
  description
  content : Vec<BookItem>
  books : HashMap<&'a str, Book>
  renderer
  livereload
}

class book::book.Book {
  metadata
  frontmatter
  mainmatter
  backmatter

  new(title)
}

class book::bookconfig.BookConfig {
  root
  dest
  src
  theme_path
  title
  author
  description
  indent_spaces
  multilingual

  new(root)
}

class book::chapter.Chapter {
  title
  file
  author
  description
  index
  class
  sub_chapters

  new(title, file)
}

namespace book::bookitem {

enum BookItem {
  Chapter "String, Chapter"
  Affix "Chapter"
  Spacer
}

class BookItems {
  items : &'a [BookItem]
  current_index
  stack : Vec<"&'a [BookItem], usize">
}

class Chapter {
  name
  path
  sub_items

  new(name, path)
}

}

namespace book::metadata {

class BookMetadata {
  title
  subtitle
  description
  publisher
  language
  authors
  translators
  number_format
  section_names
  new(title)
}

class Author {
  name
  email
  new(name)
}

class Language {
  name
  code
}

class Publisher {
  name
  url
  logo_src
}

enum NumberFormat {
  Arabic
  Roman
  Word
}

}

class renderer::html_handlebars::HtmlHandlebars {
  new()
  render(book: MDBook)
}

class theme::Theme {
  index
  css
  favicon
  js
  highlight_css
  tomorrow_night_css
  highlight_js
  jquery
  new(src)
}

book::book-[hidden]->book::bookconfig
book::book-[hidden]->book::chapter
book::book-[hidden]->book::bookitem
book::book-[hidden]->book::metadata

book::bookitem.BookItems-[hidden]->book::bookitem.BookItem

renderer::html_handlebars::HtmlHandlebars-[hidden]->theme::Theme

@enduml