defmodule MLServe.MixProject do
  use Mix.Project

  @version "0.1.0"
  @source_url "https://github.com/jamesnjovu/ml_serve"

  def project do
    [
      app: :ml_serve,
      version: @version,
      elixir: "~> 1.14",
      start_permanent: Mix.env() == :prod,
      elixirc_paths: elixirc_paths(Mix.env()),
      package: package(),
      name: "MLServe",
      source_url: @source_url,
      homepage_url: @source_url,
      description: description(),
      deps: deps(),
      docs: docs(),
      aliases: aliases(),
      test_coverage: [tool: ExCoveralls],
      preferred_cli_env: [
        coveralls: :test,
        "coveralls.detail": :test,
        "coveralls.html": :test,
        "coveralls.github": :test
      ],
      dialyzer: [
        plt_add_apps: [:mix, :ex_unit],
        plt_file: {:no_warn, "priv/plts/dialyzer-#{Mix.env()}.plt"}
      ]
    ]
  end

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

  # `test/support` holds the test-only model backends and the shared ExUnit case template.
  # Neither is compiled for consumers, who always build in :prod.
  defp elixirc_paths(:test), do: ["lib", "test/support"]
  defp elixirc_paths(_), do: ["lib"]

  # Shown on hex.pm and indexed by Hex search, Google, and LLM crawlers. Lead with the concrete
  # nouns people actually search for.
  defp description do
    """
    Production machine-learning inference for the BEAM. OTP supervision, worker pools, dynamic
    batching, caching, telemetry, model versioning and canary rollout around any ML backend —
    Nx, Bumblebee, ONNX, Python or a remote service.
    """
  end

  defp package do
    [
      name: "ml_serve",
      # Allowlist. `test/` and `priv/plts/` are excluded by omission.
      files: ~w(lib guides usage-rules.md llms.txt
                .formatter.exs mix.exs README.md CHANGELOG.md LICENSE),
      licenses: ["MIT"],
      links: %{
        "GitHub" => @source_url,
        "Documentation" => "https://hexdocs.pm/ml_serve",
        "Changelog" => "#{@source_url}/blob/main/CHANGELOG.md",
        "Usage rules (for AI agents)" => "#{@source_url}/blob/main/usage-rules.md",
        "Issues" => "#{@source_url}/issues"
      },
      maintainers: ["James Njovu"]
    ]
  end

  defp deps do
    [
      # The only runtime dependency. Instrumentation is a first-class feature of this library and
      # :telemetry is the ecosystem-standard dispatcher — everything else stays optional.
      {:telemetry, "~> 1.0"},

      # Tooling
      # :test as well as :dev — the CI lint job runs with MIX_ENV=test, so a dev-only dialyxir
      # makes `mix dialyzer` an unknown task there.
      {:credo, "~> 1.7", only: [:dev, :test], runtime: false},
      {:dialyxir, "~> 1.4", only: [:dev, :test], runtime: false},
      {:ex_doc, "~> 0.40", only: :dev, runtime: false},
      {:excoveralls, "~> 0.18", only: :test, runtime: false},
      {:mix_audit, "~> 2.0", only: [:dev, :test], runtime: false},

      # Optional. MLServe.Telemetry.Metrics returns Telemetry.Metrics definitions when this is
      # present and an empty list when it is not, so LiveDashboard users get metrics for free
      # without every consumer paying for the dependency.
      {:telemetry_metrics, "~> 0.6 or ~> 1.0", optional: true}
    ]
  end

  defp docs do
    [
      main: "readme",
      source_ref: "v#{@version}",
      source_url: @source_url,
      authors: ["James Njovu"],
      api_reference: true,
      extras: [
        "README.md": [title: "Overview"],
        "guides/getting-started.md": [title: "Getting Started"],
        "guides/architecture.md": [title: "Architecture"],
        "guides/creating-a-backend.md": [title: "Creating a Model Backend"],
        "guides/running-inference.md": [title: "Running Inference"],
        "guides/batch-inference.md": [title: "Batch Inference"],
        "guides/concurrency.md": [title: "Concurrency"],
        "guides/telemetry.md": [title: "Telemetry"],
        "guides/model-versioning.md": [title: "Model Versioning"],
        "guides/phoenix-integration.md": [title: "Phoenix Integration"],
        "guides/oban-integration.md": [title: "Oban Integration"],
        "guides/production-deployment.md": [title: "Production Deployment"],
        "CHANGELOG.md": [title: "Changelog"],
        LICENSE: [title: "License"]
      ],
      groups_for_extras: [
        Guides: Path.wildcard("guides/*.md")
      ],
      groups_for_modules: [
        Core: [MLServe, MLServe.Model, MLServe.Backend],
        Backends: ~r"MLServe.Backend\.",
        Observability: ~r"MLServe.Telemetry",
        Errors: [MLServe.Error, MLServe.BackendError],
        Runtime: [
          MLServe.Application,
          MLServe.Batcher,
          MLServe.Cache,
          MLServe.Config,
          MLServe.ModelInstance,
          MLServe.ModelRegistry,
          MLServe.ModelServer,
          MLServe.ModelSpec,
          MLServe.ModelSupervisor,
          MLServe.Security,
          MLServe.Supervisor,
          MLServe.Worker,
          MLServe.WorkerSupervisor
        ]
      ],
      skip_undefined_reference_warnings_on: ["CHANGELOG.md"]
    ]
  end

  defp aliases do
    [
      # One command for everything CI's lint job gates on, so a local run and a CI run cannot
      # disagree about whether the tree is clean.
      lint: [
        "format --check-formatted",
        "compile --warnings-as-errors",
        "credo --strict"
      ]
    ]
  end
end