wallet_passes

defmodule WalletPasses.QR do
  @moduledoc "QR code generation for wallet passes."

  @doc "Generates a QR code as an SVG string."
  def svg(message, opts \\ []) do
    color = Keyword.get(opts, :foreground_color, "#000000")
    width = Keyword.get(opts, :size)

    svg_opts =
      [color: color, background_color: "transparent"]
      |> then(fn o -> if width, do: Keyword.put(o, :width, width), else: o end)

    message
    |> EQRCode.encode()
    |> EQRCode.svg(svg_opts)
  end

  @doc "Generates a QR code as a PNG binary."
  def png(message, opts \\ []) do
    width = Keyword.get(opts, :size, 200)

    message
    |> EQRCode.encode()
    |> EQRCode.png(width: width)
  end
end