vsr

defmodule Vsr.MixProject do
  use Mix.Project

  def project do
    [
      app: :vsr,
      version: "0.1.0",
      elixir: "~> 1.18",
      start_permanent: Mix.env() == :prod,
      deps: deps(),
      elixirc_paths: elixirc_paths(Mix.env()),
      elixirc_options: elixirc_options(Mix.env()),
      aliases: aliases(),
      description: description(),
      package: package(),
      source_url: "https://github.com/ityonemo/vsr",
      homepage_url: "https://github.com/ityonemo/vsr",
      docs: docs()
    ]
  end

  defp description do
    """
    Viewstamped Replication (VSR) consensus protocol implementation for Elixir.
    Provides fault-tolerant state machine replication with automatic failure recovery,
    primary-backup replication, and comprehensive telemetry instrumentation.
    """
  end

  defp package do
    [
      name: "vsr",
      licenses: ["MIT"],
      links: %{
        "GitHub" => "https://github.com/ityonemo/vsr"
      },
      files: ~w(lib .formatter.exs mix.exs README.md LICENSE CHANGELOG.md)
    ]
  end

  defp docs do
    [
      main: "VsrServer",
      extras: ["README.md", "CHANGELOG.md", "SPECIFICATION.md", "TELEMETRY_EVENTS.md"],
      groups_for_modules: [
        "Core": [VsrServer],
        "Messages": [
          Vsr.Message,
          Vsr.Message.ClientRequest,
          Vsr.Message.Prepare,
          Vsr.Message.PrepareOk,
          Vsr.Message.Commit,
          Vsr.Message.StartViewChange,
          Vsr.Message.DoViewChange,
          Vsr.Message.StartView,
          Vsr.Message.GetState,
          Vsr.Message.NewState,
          Vsr.Message.Heartbeat
        ],
        "Support": [Vsr.LogEntry, Vsr.Telemetry]
      ]
    ]
  end

  defp use_mcp, do: System.get_env("USE_MCPS") == "true"

  defp aliases do
    List.wrap(
      if use_mcp(),
        do: {
          :mcps,
          "run --no-halt -e 'Agent.start(fn -> Bandit.start_link(plug: Tidewave, port: 4000); Bandit.start_link(plug: Codicil.Plug, port: 4700) end)'"
        }
    )
  end

  # Run "mix help compile.app" to learn about applications.
  def application do
    case Mix.env() do
      :maelstrom ->
        [
          extra_applications: [:logger, :sasl],
          mod: {Maelstrom.Application, []}
        ]

      _ ->
        [
          extra_applications: [:logger, :runtime_tools]
        ]
    end
  end

  def elixirc_paths(:test), do: ["lib", "test/_support", "maelstrom-adapter"]
  def elixirc_paths(:maelstrom), do: ["lib", "maelstrom-adapter", "test/_support"]
  def elixirc_paths(_), do: ["lib"]

  defp elixirc_options(_env), do: []

  # Run "mix help deps" to learn about dependencies.
  defp deps do
    [
      {:telemetry, "~> 1.0"},
      {:mox, "~> 1.0", only: :test},
      {:ex_doc, "~> 0.34", only: :dev, runtime: false}
    ] ++ mcp_tools()
  end

  defp mcp_tools do
    List.wrap(
      if use_mcp() do
        [
          # MCP TOOLS
          {:tidewave, "~> 0.4", only: :dev},
          {:bandit, "~> 1.0", only: [:dev, :test]},
          # "~> 0.2", only: [:dev, :test]}
          {:codicil, path: "../codicil", only: [:dev, :test]}
        ]
      end
    )
  end
end