child_urls.ex

defp get_children_urls(body) do
    Floki.find(body, "div#readme")
    |> Floki.find("div.Box-body")
    |> Floki.find("a")
    |> Floki.attribute("href")
    |> Enum.filter(fn url ->
      %URI{host: host, path: path} = URI.parse(url)
      case host do
        nil -> false
        _ ->
          with false <- path == nil,
               true <- String.match?(host, ~r/.*github\.com$/),
               true <- length(String.split(path, "/")) == 3,
               false <- Enum.at(String.split(path, "/"), 1) == "sponsors" do
            true
          else
            _ -> false
          end
      end
    end)
end