defmodule ClusterHelper.MixProject do
  use Mix.Project

  def project do
    [
      app: :cluster_helper,
      version: "1.0.0",
      elixir: "~> 1.17",
      start_permanent: Mix.env() == :prod,
      deps: deps(),

      # Docs
      name: "ClusterHelper",
      source_url: "https://github.com/ohhi-vn/cluster_helper",
      homepage_url: "https://ohhi.vn",
      docs: docs(),
      description: description(),
      package: package(),
      aliases: aliases(),
      usage_rules: usage_rules()
    ]
  end

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

  # Mix 1.19+ requires CLI preferences to live here, not in project/0.
  def cli do
    [
      preferred_envs: [
        "test.cluster": :test,
        "test.multi_node_scale": :test,
        "test.all": :test
      ]
    ]
  end

  # Run "mix help deps" to learn about dependencies.
  defp deps do
    [
      {:telemetry, "~> 1.4"},
      {:ex_doc, "~> 0.40", only: :dev, runtime: false, warn_if_outdated: true},
      {:benchee, "~> 1.5", only: :dev},

      # Test dependencies
      {:excoveralls, "~> 0.18", only: :test},

      # Code quality
      {:dialyxir, "~> 1.4", only: [:dev, :test], runtime: false},
      {:credo, "~> 1.7", only: [:dev, :test], runtime: false},
      {:ex_dna, "~> 1.5", only: [:dev, :test], runtime: false}
    ]
  end

  defp description() do
    "A tiny library for lookup node(s) in dynamic clustering. Map node to roles or id and allows you to easily select node(s) by role/id."
  end

  defp package() do
    [
      maintainers: ["Manh Vu"],
      licenses: ["MIT"],
      links: %{
        "GitHub" => "https://github.com/ohhi-vn/cluster_helper",
        "About us" => "https://ohhi.vn/"
      }
    ]
  end

  defp docs do
    [
      main: "readme",
      extras: extras()
    ]
  end

  defp extras do
    guides =
      "guides/**/*.md"
      |> Path.wildcard()
      |> Enum.map(&guide_entry/1)

    [{"README.md", [title: "Overview", default: true]} | guides]
  end

  defp guide_entry(path) do
    title =
      path
      |> Path.basename(".md")
      |> String.replace(~r/[-_]/, " ")
      |> String.split(" ")
      |> Enum.map_join(" ", &String.capitalize/1)
      |> case do
        "F A Q" -> "FAQ"
        title -> title
      end

    group = guide_group(path)

    {String.to_atom(path), [title: title, group: group]}
  end

  defp guide_group("guides/SCOPES" <> _), do: "Advanced"
  defp guide_group("guides/TELEMETRY" <> _), do: "Advanced"
  defp guide_group("guides/ADAPTERS" <> _), do: "Advanced"
  defp guide_group(_), do: "Getting Started"

  defp aliases do
    [
      # Default `mix test` – skip the real-cluster tests for fast feedback.
      test: ["test --exclude cluster"],

      # Real-cluster tests only (2-3 nodes).
      # `--name` is a VM flag so it must be given to the `elixir` binary, not to
      # `mix test`. The `cmd` task runs a shell command, letting us prefix with
      # `elixir --name ... -S mix`.
      "test.cluster": "cmd elixir --name test@127.0.0.1 -S mix test --only cluster",

      # Multi-node scale tests (10-20+ nodes with churn simulation).
      "test.multi_node_scale":
        "cmd elixir --name test@127.0.0.1 -S mix test --only multi_node_scale",

      # Full suite – unit + cluster + multi-node scale.
      "test.all":
        "cmd elixir --name test@127.0.0.1 -S mix test --include cluster --include multi_node_scale",
      # Testing & Coverage
      coveralls: ["test --cover", "coveralls.html"],
      # Code Quality
      quality: ["format --check-formatted", "credo --strict", "dialyzer"]
    ]
  end

  defp usage_rules do
    [
      file: "AGENTS.md",
      usage_rules: :all
    ]
  end
end