defmodule Zig.Assembler do
  @moduledoc """
  Assembles the staging directory for zig content.

  The staging directory contains:

  - `build.zig` for the library file.
  """

  alias Zig.Builder

  @doc "staging directory for the zigler assembly"
  def directory(module) do
    Path.join(System.tmp_dir(), to_string(module))
  end

  def assemble(module, opts) do
    directory = directory(module)
    File.mkdir_p!(directory)

    opts =
      Keyword.take(opts, [
        :to,
        :from,
        :link_lib,
        :build_opts,
        :stage1,
        :include_dir,
        :c_src,
        :packages
      ])

    opts = Keyword.merge([to: directory], opts)

    Builder.build(module, opts)
  end
end