@startuml

namespace book {

class MDBook {
  project_root: PathBuf,
  template_dir: PathBuf,
  src_base: PathBuf,
  dest_base: PathBuf,
  render_intent: RenderIntent,

  translations: HashMap<String, Book>,

  indent_spaces: i32,
  pub livereload_script: Option<String>,

  new(project_root)
}

class book::Book {
  config: BookConfig,
  toc: Vec<TocItem>,

  new(project_root)
}

class book::Chapter {
  pub title: String,
  pub content: Option<String>,

  src_path: Option<PathBuf>,
  dest_path: Option<PathBuf>,

  pub translation_links: Option<Vec<TranslationLink>>,
  pub authors: Option<Vec<Author>>,
  pub translators: Option<Vec<Author>>,
  pub description: Option<String>,
  pub css_class: Option<String>,

  new(title, src_path)
}

}

namespace book::bookconfig {

class BookConfig {
  pub dest: PathBuf,
  pub src: PathBuf,

  pub title: String,
  pub subtitle: Option<String>,
  pub description: Option<String>,
  pub language: Language,
  pub authors: Vec<Author>,
  pub translators: Option<Vec<Author>>,
  pub publisher: Option<Publisher>,
  pub number_format: NumberFormat,
  pub section_names: Vec<String>,
  pub is_main_book: bool,
  pub is_multilang: bool,

  new(project_root)
}

class Author {
  name: String,
  file_as: String,
  email: Option<String>,

  new(name)
}

class Language {
  name: String,
  code: String,

  new(name, code)
}

class Publisher {
  name: String,
  url: Option<String>,
  logo_src: Option<PathBuf>,

  new(name)
}

enum NumberFormat {
  Arabic
  Roman
  Word
}

}

namespace book::toc {

class TocContent {
  pub chapter: Chapter,
  pub sub_items: Option<Vec<TocItem>>,
  pub section: Option<Vec<i32>>,
}

enum TocItem {
  Numbered "TocContent",
  Unnumbered "TocContent",
  Unlisted "TocContent",
  Spacer,
}

}

class Renderer {
   build(&self, project_root: &PathBuf),
   render(&self, book_project: &MDBook),
}

@enduml