defmodule Mix.Tasks.Compile.Pasexto do
  use Mix.Task.Compiler

  def run(_arg) do
    mode =
      if Mix.env() == :prod do
        "--release=fast"
      else
        "--release=off"
      end

    config = Mix.Project.config()
    app_priv = Path.join(Mix.Project.app_path(config), "priv")

    result =
      case System.cmd("zig", ["build", mode, "-p", app_priv], stderr_to_stdout: true) do
        {result, 0} ->
          result

        {result, errcode} ->
          Mix.raise(~s{Could not compile (exit status: #{errcode}).\n} <> result)
      end

    if match?({:unix, :darwin}, :os.type()) do
      lib = Path.join(app_priv, "lib/libcrypto_ext_nif.so")
      _ = :file.make_symlink("./libcrypto_ext_nif.dylib", lib)
    end

    IO.binwrite(result)
  end
end

defmodule Pasexto.MixProject do
  use Mix.Project

  @source_url "https://github.com/alexkornitzer/pasexto"
  @version "0.1.1"

  def project do
    [
      app: :pasexto,
      version: @version,
      elixir: "~> 1.19",
      compilers: [:pasexto] ++ Mix.compilers(),
      start_permanent: Mix.env() == :prod,
      deps: deps(),
      elixirc_paths: elixirc_paths(Mix.env()),

      # Hex
      description: "A compliant and complete implementation of PASETO and PASERK.",
      package: package(),

      # Docs
      name: "pasexto",
      docs: docs()
    ]
  end

  def application do
    [
      extra_applications: [:asn1, :crypto, :public_key]
    ]
  end

  defp deps do
    [
      {:dialyxir, "~> 1.0", only: [:dev, :test], runtime: false},
      {:ex_doc, "~> 0.40", only: :dev, runtime: false}
    ]
  end

  defp docs do
    [
      main: "Pasexto",
      source_ref: "v#{@version}",
      source_url: @source_url,
      extras: []
    ]
  end

  defp elixirc_paths(:test), do: ["lib", "test/support"]
  defp elixirc_paths(_), do: ["lib"]

  defp package do
    [
      name: "pasexto",
      build_tools: ~w(mix zig),
      files: ~w(.formatter.exs CHANGELOG* LICENSE* README* build.zig lib mix.exs src zig),
      licenses: ["MIT"],
      links: %{"GitHub" => @source_url},
      maintainers: ["Alex Kornitzer"]
    ]
  end
end