shift73k/lib/bones73k_web/views/icon_helper.ex

defmodule Bones73kWeb.IconHelpers do
  @moduledoc """
  Generate SVG sprite use tags for SVG icons
  """

  use Phoenix.HTML
  import Bones73k.Util.List
  alias Bones73kWeb.Router.Helpers, as: Routes

  def icon_div(conn, name, div_opts \\ [], svg_opts \\ []) do
    content_tag(:div, tag_opts(name, div_opts)) do
      icon_svg(conn, name, svg_opts)
    end
  end

  def icon_svg(conn, name, opts \\ []) do
    content_tag(:svg, tag_opts(name, opts)) do
      tag(:use, "xlink:href": Routes.static_path(conn, "/images/icons.svg#" <> name))
    end
  end

  defp tag_opts(name, opts) do
    classes = "#{Keyword.get(opts, :class, "")} #{name}" |> String.trim_leading()
    styles = Keyword.get(opts, :style)
    width = Keyword.get(opts, :width)
    height = Keyword.get(opts, :height)
    id = Keyword.get(opts, :id)

    [class: classes]
    |> prepend_if(styles, {:style, styles})
    |> prepend_if(width, {:style, width})
    |> prepend_if(height, {:style, height})
    |> prepend_if(id, {:id, id})
  end
end