defmodule ExZstd.MixProject do
  use Mix.Project

  @source_url "https://gitlab.com/chrooti/ex_zstd"

  def project do
    [
      app: :ex_zstd,
      deps: deps(Mix.env()),
      elixir: "~> 1.7",
      version: "0.3.2",
      package: package(),
      compilers: compilers(),
      source_url: @source_url,
      description: description(),
      build_embedded: Mix.env() == :prod,
      start_permanent: Mix.env() == :prod
    ]
  end

  defp deps(_),
    do: [
      {:ex_doc, ">= 0.0.0", only: :dev, runtime: false}
    ]

  defp package,
    do: [
      name: "ex_zstd_reloaded",
      files: [
        "lib",
        ".formatter.exs",
        "mix.exs",
        "README.md",
        "LICENSE",
        "c_src",
        "Makefile"
      ],
      links: %{"Gitlab" => @source_url},
      licenses: ["BSD-4-Clause"]
    ]

  defp compilers,
    do: [
      :nif_ex_zstd,
      :elixir,
      :app
    ]

  defp description do
    "Elixir bindings to the Zstandard library"
  end
end

defmodule Mix.Tasks.Compile.NifExZstd do
  def run(_args) do
    artifact_path = Path.join([Mix.Project.build_path(), "lib", "ex_zstd", "priv"])

    with {nproc, 0} <- System.cmd("nproc", []),
         nproc <- nproc |> String.trim_trailing("\n"),
         {_, 0} = System.cmd("make", ["-j", nproc]) do
      System.cmd("make", ["install", "DESTDIR=#{artifact_path}"])
      :ok
    else
      _ -> :error
    end
  end

  def clean() do
    {_, 0} = System.cmd("make", ["clean"])
  end
end