chiya/lib/chiya_web/controllers/page_html.ex

defmodule ChiyaWeb.PageHTML do
  use ChiyaWeb, :html_public
  import Phoenix.HTML.Tag, only: [content_tag: 3, content_tag: 2]

  embed_templates "page_html/*"

  def tag_list([]), do: "No Tags"
  def tag_list(tags), do: Enum.map_join(tags, ", ", fn t -> t.name end)

  def render_outline(note) do
    note.content
    |> ChiyaWeb.Outline.get()
    |> Enum.map(&do_render_outline/1)
  end

  def do_render_outline(%{text: text, children: children, level: _level}) do
    slug = Slugger.slugify_downcase(text)
    content_tag(:ul, [class: "m-0"],
      do: [
        content_tag(:li, do: 
          content_tag(:a, text, href: "##{slug}")),
        Enum.map(children, &do_render_outline/1)
      ]
    ) |> safe_to_string()
  end
end