defmodule TimeWarp.MixProject do
  use Mix.Project

  @version "0.2.0"
  @source_url "https://github.com/thatsme/timewarp"

  def project do
    [
      app: :timewarp,
      version: @version,
      elixir: "~> 1.19",
      elixirc_paths: elixirc_paths(Mix.env()),
      start_permanent: Mix.env() == :prod,
      deps: deps(),
      name: "TimeWarp",
      description: description(),
      source_url: @source_url,
      homepage_url: @source_url,
      package: package(),
      docs: docs()
    ]
  end

  # Run "mix help compile.app" to learn about applications.
  def application do
    [
      extra_applications: [:logger],
      mod: {TimeWarp.Application, []}
    ]
  end

  defp description do
    "Optimistic parallel discrete-event simulation (Time Warp) on the BEAM: logical " <>
      "processes execute events speculatively and roll back automatically on causality " <>
      "violations, so models implement only pure event handling and never write rollback logic."
  end

  defp package do
    [
      licenses: ["Apache-2.0"],
      links: %{"GitHub" => @source_url},
      # Whitelist, never blacklist — only these paths enter the published tarball.
      files: ~w(lib mix.exs README.md CHANGELOG.md LICENSE CONTRIBUTING.md)
    ]
  end

  defp docs do
    [
      main: "readme",
      extras: ["README.md", "CHANGELOG.md", "CONTRIBUTING.md", {"LICENSE", [title: "License"]}],
      # Source links resolve against the release tag — run `git tag v#{@version}`
      # and push it before publishing, or the source links on HexDocs 404.
      source_ref: "v#{@version}",
      source_url: @source_url
    ]
  end

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

  # Run "mix help deps" to learn about dependencies.
  defp deps do
    [
      {:ex_doc, "~> 0.34", only: :dev, runtime: false}
    ]
  end
end