membrane_rtc_engine

defmodule Membrane.RTC.Engine.MixProject do
  use Mix.Project

  @version "0.3.2"
  @github_url "https://github.com/membraneframework/membrane_rtc_engine"

  def project do
    [
      app: :membrane_rtc_engine,
      version: @version,
      elixir: "~> 1.10",
      elixirc_paths: elixirc_paths(Mix.env()),
      start_permanent: Mix.env() == :prod,
      deps: deps(),
      aliases: aliases(),

      # hex
      description: "Membrane RTC Engine and its client library",
      package: package(),

      # docs
      name: "Membrane RTC Engine",
      source_url: @github_url,
      homepage_url: "https://membraneframework.org",
      docs: docs(),

      # dialyzer
      # this is because of optional dependencies
      # they are not included in PLT
      dialyzer: [
        plt_add_apps: [
          :ex_sdp,
          :membrane_rtp_plugin,
          :membrane_ice_plugin,
          :membrane_webrtc_plugin
        ]
      ]
    ]
  end

  def application do
    [
      mod: {Membrane.RTC.Engine.App, []},
      extra_applications: []
    ]
  end

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

  defp deps do
    [
      {:membrane_core, "~> 0.10.0"},
      {:membrane_rtp_plugin, "~> 0.13.0"},
      {:membrane_tee_plugin, "~> 0.9.0"},
      {:membrane_webrtc_plugin, "~> 0.4.0"},
      {:membrane_rtp_h264_plugin, "~> 0.12.0"},
      {:membrane_rtp_vp8_plugin, "~> 0.5.0"},
      {:membrane_rtp_format, "~> 0.4.0"},
      {:uuid, "~> 1.1"},
      {:jason, "~> 1.2"},
      {:unifex, "~> 1.0"},
      {:dialyxir, "1.1.0", only: :dev, runtime: false},
      {:ex_doc, "0.28.3", only: :dev, runtime: false},
      {:credo, "~> 1.6", only: :dev, runtime: false},

      # Optional deps for HLS endpoint
      {:membrane_http_adaptive_stream_plugin, "~> 0.7.0", optional: true},
      {:membrane_mp4_plugin, "~> 0.15.0", optional: true},
      {:membrane_aac_plugin, "~> 0.12.0", optional: true},
      {:membrane_aac_fdk_plugin, "~> 0.13.0", optional: true},

      # Otel
      {:opentelemetry_api, "~> 0.6.0"},
      {:opentelemetry, "~> 0.6.0"},
      {:open_telemetry_decorator, "~> 0.5.4"}
    ]
  end

  defp aliases() do
    [
      integration_test: &run_integration_tests/1
    ]
  end

  defp package do
    [
      maintainers: ["Membrane Team"],
      licenses: ["Apache-2.0"],
      links: %{
        "GitHub" => @github_url,
        "Membrane Framework Homepage" => "https://membraneframework.org"
      }
    ]
  end

  defp docs do
    [
      main: "readme",
      extras: extras(),
      formatters: ["html"],
      groups_for_extras: groups_for_extras(),
      assets: "internal_docs/simulcast/assets",
      source_ref: "v#{@version}",
      nest_modules_by_prefix: [Membrane.RTC.Engine.Endpoint, Membrane.RTC.Engine.Message],
      groups_for_modules: [
        Endpoints: [
          Membrane.RTC.Engine.Endpoint.WebRTC,
          Membrane.RTC.Engine.Endpoint.WebRTC.SimulcastConfig,
          Membrane.RTC.Engine.Endpoint.HLS
        ],
        Messages: [
          Membrane.RTC.Engine.Message,
          Membrane.RTC.Engine.Message.EndpointCrashed,
          Membrane.RTC.Engine.Message.MediaEvent,
          Membrane.RTC.Engine.Message.NewPeer,
          Membrane.RTC.Engine.Message.PeerLeft
        ]
      ]
    ]
  end

  defp extras() do
    [
      "README.md",
      "LICENSE",

      # guides
      "guides/simulcast.md",

      # internal docs
      "internal_docs/media_events.md",
      "internal_docs/simulcast/simulcast.md": [filename: "internal_simulcast"]
    ]
  end

  defp groups_for_extras() do
    [
      {"Developer docs", ~r/internal_docs\//},
      {"Guides", ~r/guides\//}
    ]
  end

  defp run_integration_tests(_) do
    Mix.shell().info("Getting mix dependencies in test_videoroom")

    {_io_stream, exit_status} =
      System.cmd("mix", ["deps.get"], cd: "integration_test/test_videoroom", into: IO.stream())

    if exit_status != 0, do: raise("Failed to get dependencies in test_videoroom")

    Mix.shell().info("Installing npm dependencies in test_videoroom")

    if packages_installed?("integration_test/test_videoroom/assets") do
      Mix.shell().info("* Already installed")
    else
      {_io_stream, exit_status} =
        System.cmd("npm", ["ci"], cd: "integration_test/test_videoroom/assets", into: IO.stream())

      if exit_status != 0, do: raise("Failed to install npm dependecies in test_videoroom")
    end

    Mix.shell().info("Running integration tests")

    {_io_stream, exit_status} =
      System.cmd("mix", ["test"], cd: "integration_test/test_videoroom", into: IO.stream())

    if exit_status != 0, do: raise("Failed to run integration tests")
  end

  defp packages_installed?(dir) do
    System.cmd("npm", ["ls", "--prefix", dir, "--prefer-offline"], stderr_to_stdout: true)
    |> case do
      {output, 0} ->
        missing =
          output
          |> String.split("\n")
          |> Enum.filter(&Regex.match?(~r/UNMET DEPENDENCY|empty/, &1))

        if length(missing) > 0,
          do: false,
          else: true

      {_output, _} ->
        false
    end
  end
end