class Generators::Avo::Tailwindcss::InstallGenerator

def create_files
  unless tailwindcss_installed?
    system "./bin/bundle add tailwindcss-rails"
    system "./bin/rails tailwindcss:install"
  end
  unless Rails.root.join("app", "assets", "stylesheets", "avo.tailwind.css").exist?
    say "Add default app/assets/stylesheets/avo.tailwind.css"
    copy_file template_path("avo.tailwind.css"), "app/assets/stylesheets/avo.tailwind.css"
  end
  if Rails.root.join("Procfile.dev").exist?
    append_to_file "Procfile.dev", "avo_css: yarn avo:tailwindcss --watch\n"
  else
    say "Add default Procfile.dev"
    copy_file template_path("Procfile.dev"), "Procfile.dev"
    say "Ensure foreman is installed"
    run "gem install foreman"
  end
  # Ensure that the _pre_head.html.erb template is available
  unless Rails.root.join("app", "views", "avo", "partials", "_pre_head.html.erb").exist?
    say "Ejecting the _pre_head.html.erb partial"
    Rails::Generators.invoke("avo:eject", [":pre_head", "--skip-avo-version"], {destination_root: Rails.root})
  end
  say "Adding the CSS asset to the partial"
  prepend_to_file Rails.root.join("app", "views", "avo", "partials", "_pre_head.html.erb"), "<%= stylesheet_link_tag \"avo.tailwind.css\", media: \"all\" %>"
  say "Ensure you have the following script in your package.json file.", :yellow
  say %("scripts": { "avo:tailwindcss": "tailwindcss -i ./app/assets/stylesheets/avo.tailwind.css -o ./app/assets/builds/avo.tailwind.css --minify" }), :green
end

def tailwindcss_installed?
  Rails.root.join("config", "tailwind.config.js").exist? || Rails.root.join("tailwind.config.js").exist?
end

def template_path(filename)
  Pathname.new(__dir__).join("..", "templates", "tailwindcss", filename).to_s
end