defmodule Managoat.Docs.MixProject do
  use Mix.Project

  @version "0.1.0"
  @source_url "https://github.com/managoat/managoat_docs"

  def project do
    [
      app: :managoat_docs,
      version: @version,
      elixir: "~> 1.18",
      elixirc_paths: elixirc_paths(Mix.env()),
      start_permanent: Mix.env() == :prod,
      deps: deps(),
      description:
        "A documentation manual embedded at compile time for a Phoenix app to serve, its sanitising markdown renderer, and the guardrail tests that keep it sound.",
      package: package(),
      source_url: @source_url,
      docs: docs(),
      dialyzer: dialyzer(),
      test_coverage: [
        # What this suite measures on its own: the compiler, the renderer and
        # the checks, driven by the fixture manual. Raise it as the library's
        # own tests grow; never lower it.
        summary: [threshold: 90],
        # The two `use` macros run at test-compile time, before cover
        # instruments anything, so they always report 0%. They are exercised
        # by the fixture module and by docs_test.exs (and by every host's
        # guardrail file) rather than measured.
        ignore_modules: [Managoat.Docs, Managoat.Docs.GuardrailCase]
      ]
    ]
  end

  def application do
    [extra_applications: [:logger]]
  end

  # The fixture manual's docs module lives in test/support: it `use`s the
  # macro against test/fixtures/manual, so it is a test-only compile.
  defp elixirc_paths(:test), do: ["lib", "test/support"]
  defp elixirc_paths(_), do: ["lib"]

  defp deps do
    [
      # Tooling for the repository, not the package: docs for hexdocs.pm (built
      # by `mix hex.publish`), credo and dialyzer for CI. dialyxir is pinned to
      # the commit that added OTP 28 support; 1.4.7 crashes on OTP 28 warnings.
      {:ex_doc, "~> 0.34", only: :dev, runtime: false},
      {:credo, "~> 1.7", only: [:dev, :test], runtime: false},
      {:dialyxir,
       github: "jeremyjh/dialyxir",
       ref: "3553678f4d69281ac6db61034bcf35bcb30cfd78",
       only: [:dev, :test],
       runtime: false},
      # comrak, through MDEx. Every page renders through it, both paths.
      {:mdex, "~> 0.13.5"},
      # Syntax highlighting for the trusted path. Called directly rather than
      # through MDEx's integration, which needs a NIF build an order of
      # magnitude larger (147 MB unpacked against 12 MB); see
      # `Managoat.Docs.Markdown`.
      {:lumis, "~> 0.7"},
      # The pre-encoded search index.
      {:jason, "~> 1.2"}
    ]
  end

  defp package do
    [
      licenses: ["Apache-2.0"],
      links: %{"GitHub" => @source_url, "Changelog" => "#{@source_url}/blob/main/CHANGELOG.md"},
      files: ~w(lib mix.exs README.md CHANGELOG.md LICENSE NOTICE)
    ]
  end

  defp docs do
    [
      main: "readme",
      extras: ["README.md", "CHANGELOG.md"],
      source_ref: "v#{@version}",
      source_url: @source_url
    ]
  end

  defp dialyzer do
    [
      ignore_warnings: ".dialyzer_ignore.exs",
      # A fixed path so CI can cache the PLT across runs.
      plt_file: {:no_warn, "priv/plts/dialyzer.plt"}
    ]
  end
end