defmodule Datadog.DataStreams.MixProject do
  use Mix.Project

  def project do
    [
      app: :data_streams,
      name: "Data Streams Ex",
      description: "DataDog data streams library for Elixir",
      version: "1.2.2",
      elixir: "~> 1.11",
      elixirc_paths: elixirc_paths(Mix.env()),
      start_permanent: Mix.env() == :prod,
      deps: deps(),
      docs: docs(),
      package: package(),
      source_url: "https://github.com/stordco/data-streams-ex",
      test_coverage: test_coverage()
    ]
  end

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

  # Specifies which paths to compile per environment.
  defp elixirc_paths(:test), do: ["lib", "test/support"]
  defp elixirc_paths(_), do: ["lib"]

  # Run "mix help deps" to learn about dependencies.
  defp deps do
    [
      {:benchee, "~> 1.0", only: [:dev, :test]},
      {:credo, "~> 1.6", only: [:dev, :test], runtime: false},
      {:dialyxir, "~> 1.1", only: [:dev, :test], runtime: false},
      {:doctor, "~> 0.19.0", only: [:dev, :test], runtime: false},
      {:ex_doc, "~> 0.28", only: [:dev, :test], runtime: false},
      {:finch, ">= 0.1.0"},
      {:jason, "~> 1.0"},
      {:msgpax, "~> 2.3.1"},
      {:opentelemetry_api, ">= 1.0.0"},
      {:protobuf, ">= 0.10.0"}
    ]
  end

  # Used when packaging for publishing to Hex.pm
  defp package do
    [
      files: ~w(lib mix.exs .formatter.exs README.md CHANGELOG.md),
      licenses: ["MIT"],
      links: %{
        Changelog: "https://github.com/stordco/data-streams-ex/releases",
        GitHub: "https://github.com/stordco/data-streams-ex"
      }
    ]
  end

  # Include useful markdown files in built documentation
  defp docs do
    [
      before_closing_body_tag: &before_closing_body_tag/1,
      extras: ["README.md", "CHANGELOG.md"],
      groups_for_modules: [
        "Data Stream Integrations": [~r/Datadog.DataStreams.Integrations/],
        "Data Streams": [~r/Datadog.DataStreams/],
        Sketch: [~r/Datadog.Sketch/]
      ],
      main: "readme",
      nest_modules_by_prefix: [
        Datadog.DataStreams.Integrations,
        Datadog
      ],
      skip_undefined_reference_warnings_on: ["CHANGELOG.md"]
    ]
  end

  defp before_closing_body_tag(:html) do
    """
    <script src="https://cdn.jsdelivr.net/npm/mermaid@8.13.3/dist/mermaid.min.js"></script>
    <script>
      document.addEventListener("DOMContentLoaded", function () {
        mermaid.initialize({ startOnLoad: false });
        let id = 0;
        for (const codeEl of document.querySelectorAll("pre code.mermaid")) {
          const preEl = codeEl.parentElement;
          const graphDefinition = codeEl.textContent;
          const graphEl = document.createElement("div");
          const graphId = "mermaid-graph-" + id++;
          mermaid.render(graphId, graphDefinition, function (svgSource, bindListeners) {
            graphEl.innerHTML = svgSource;
            bindListeners && bindListeners(graphEl);
            preEl.insertAdjacentElement("afterend", graphEl);
            preEl.remove();
          });
        }
      });
    </script>
    """
  end

  defp before_closing_body_tag(_), do: ""

  # Ignore modules that don't require test coverage. Worth noting that
  # we test on Elixir versions < 1.13 which do not include the
  # `ignore_modules` option.
  defp test_coverage do
    [
      ignore_modules: [
        ~r/Enumerable/,
        ~r/Datadog.Sketch.Protobuf/,
        ~r/Msgpax/
      ],
      summary: [
        threshold: 0
      ]
    ]
  end
end