defmodule Kepler.MixProject do
  use Mix.Project

  @version "0.1.0"
  @source_url "https://github.com/houllette/kepler"
  @description """
  An event router that lives inside your Elixir app. Declare the occurrences \
  you care about; Kepler enriches them with in-VM context and delivers them \
  to an external consumer.\
  """

  def project do
    [
      app: :kepler,
      version: @version,
      elixir: "~> 1.18",
      elixirc_paths: elixirc_paths(Mix.env()),
      start_permanent: Mix.env() == :prod,
      deps: deps(),
      aliases: aliases(),
      name: "Kepler",
      description: @description,
      package: package(),
      docs: docs(),
      source_url: @source_url,
      dialyzer: [
        plt_file: {:no_warn, "priv/plts/dialyzer.plt"},
        # Every OTP app Kepler calls into directly. `plt_add_apps` does not
        # resolve transitive dependencies, so :public_key has to be named even
        # though :ssl implies it — Kepler.Transport.Httpc calls it itself.
        plt_add_apps: [:ex_unit, :mix, :inets, :ssl, :public_key, :crypto]
      ],
      usage_rules: [file: "AGENTS.md", usage_rules: :all]
    ]
  end

  def cli do
    [preferred_envs: [precommit: :test]]
  end

  def application do
    [
      extra_applications: [:logger, :crypto],
      mod: {Kepler.Application, []}
    ]
  end

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

  defp deps do
    [
      # The only runtime dependency, by design. Everything else is dev/test.
      {:telemetry, "~> 1.0"},
      {:tidewave, "~> 0.8", only: :dev},
      {:bandit, "~> 1.0", only: :dev},
      {:credo, "~> 1.7", only: [:dev, :test], runtime: false},
      {:dialyxir, "~> 1.4", only: [:dev, :test], runtime: false},
      {:mix_audit, "~> 2.1", only: [:dev, :test], runtime: false},
      {:ex_doc, "~> 0.40", only: [:dev, :test], runtime: false},
      {:usage_rules, "~> 1.2", only: [:dev, :test], runtime: false}
    ]
  end

  defp package do
    [
      licenses: ["MIT"],
      links: %{
        "GitHub" => @source_url,
        "Changelog" => "#{@source_url}/blob/main/CHANGELOG.md"
      },
      files: ~w(lib guides mix.exs README.md LICENSE CHANGELOG.md)
    ]
  end

  defp docs do
    [
      main: "readme",
      source_ref: "v#{@version}",
      source_url: @source_url,
      extras: [
        "README.md",
        "guides/getting_started.md",
        "guides/crash_attribution.md",
        "guides/writing_watches.md",
        "guides/sinks_and_payloads.md",
        "guides/performance.md",
        "guides/testing.md",
        "CHANGELOG.md"
      ],
      groups_for_extras: [
        Guides: ~r{guides/}
      ],
      groups_for_modules: [
        "Declaring watches": [Kepler, Kepler.Watch, Kepler.Context, Kepler.CompileError],
        Sources: [
          Kepler.Source.Report,
          Kepler.Source.Telemetry,
          Kepler.Source.Process,
          Kepler.Source.VM,
          Kepler.SystemMonitor
        ],
        "Events and delivery": [
          Kepler.Event,
          Kepler.Sink,
          Kepler.Sink.Webhook,
          Kepler.Sink.Callback,
          Kepler.Transport,
          Kepler.Transport.Httpc
        ],
        Internals: [
          Kepler.Budget,
          Kepler.Emitter,
          Kepler.Histogram,
          Kepler.Poller,
          Kepler.RingBuffer,
          Kepler.Trigger
        ]
      ],
      nest_modules_by_prefix: [Kepler.Sink, Kepler.Source, Kepler.Transport]
    ]
  end

  defp aliases do
    [
      tidewave:
        "run --no-halt -e 'Agent.start(fn -> Bandit.start_link(plug: Tidewave, port: 4000) end)'",
      precommit: [
        "deps.unlock --check-unused",
        "hex.audit",
        "deps.audit",
        "compile --warnings-as-errors",
        "format",
        "credo --strict",
        "usage_rules.sync --yes",
        "xref graph --label compile-connected --fail-above 0",
        "docs --warnings-as-errors",
        "test --warnings-as-errors"
      ]
    ]
  end
end