# SPDX-FileCopyrightText: 2022 Jon Carstens
# SPDX-FileCopyrightText: 2025 Frank Hunleth
#
# SPDX-License-Identifier: Apache-2.0
#
defmodule Mix.Tasks.Nerves.Bootstrap do
  # Bootstrap Nerves tooling into the current Mix tooling
  #
  # The purpose of this task is to ensure the Nerves integration is compiled
  # first and available to be injected into the Mix tooling since Nerves.Bootstrap
  # is available as an archive. (i.e. this is like having `:nerves` as a
  # dependency of this archive even though archives do not allow traditional
  # dependencies)
  #
  # It is not intended to be run manually

  @moduledoc false
  use Mix.Task

  alias Nerves.Bootstrap.UpdateChecker

  @impl Mix.Task
  def run(_args) do
    nerves_ver = nerves_version()

    if is_nil(nerves_ver) do
      Mix.raise(":nerves is required as a dependency of this project")
    end

    if Version.match?(nerves_ver, "< 1.8.0") do
      Mix.raise("""
      You are using :nerves #{nerves_ver} which is incompatible with this version
      of nerves_bootstrap and will result in compilation failures.

      Please update to :nerves >= 1.8.0 or downgrade your nerves_bootstrap <= 1.11.5
      """)
    end

    if Mix.target() != :host and not Code.ensure_loaded?(Nerves.Env) do
      # The tooling mix tasks are maintained in :nerves so we need to
      # ensure it is compiled here first so the tasks are available.
      # If the target is host, then this will be handled by the regular
      # compilation process
      _ = Mix.Tasks.Deps.Loadpaths.run(["--no-compile"])
      Mix.Tasks.Deps.Compile.run(["nerves", "--include-children"])
    end

    UpdateChecker.check()
  end

  defp nerves_version() do
    if path = Mix.Project.deps_paths()[:nerves] do
      Mix.Project.in_project(:nerves, path, fn _ -> Mix.Project.config()[:version] end)
    end
  catch
    _, _ -> nil
  end
end