defmodule Mix.Tasks.Dexcord.Coverage do
  @shortdoc "Verifies declared REST routes cover the pinned Discord OpenAPI spec"
  @moduledoc "See Dexcord.Api.Coverage. Exits non-zero when in-scope endpoints are missing."
  use Mix.Task

  @impl Mix.Task
  def run(_argv) do
    Mix.Task.run("compile")

    case Dexcord.Api.Coverage.check() do
      {:ok, stats} ->
        Mix.shell().info(
          "coverage OK — #{stats.declared} declared, #{stats.spec} in spec, #{stats.allowlisted} allowlisted"
        )

      {:missing, missing} ->
        Mix.shell().error("MISSING #{length(missing)} in-scope endpoint(s):")
        Enum.each(missing, &Mix.shell().error("  " <> &1))
        exit({:shutdown, 1})
    end
  end
end