usage_rules

defmodule Mix.Tasks.UsageRules.Install.Docs do
  @moduledoc false

  @spec short_doc() :: String.t()
  def short_doc do
    "Installs usage_rules"
  end

  @spec example() :: String.t()
  def example do
    "mix igniter.install usage_rules"
  end

  @spec long_doc() :: String.t()
  def long_doc do
    """
    #{short_doc()}

    ## Example

    ```sh
    #{example()}
    ```
    """
  end
end

if Code.ensure_loaded?(Igniter) do
  defmodule Mix.Tasks.UsageRules.Install do
    @shortdoc "#{__MODULE__.Docs.short_doc()}"

    @moduledoc __MODULE__.Docs.long_doc()

    use Igniter.Mix.Task

    @impl Igniter.Mix.Task
    def info(_argv, _composing_task) do
      %Igniter.Mix.Task.Info{
        group: :usage_rules,
        example: __MODULE__.Docs.example(),
        only: [:dev]
      }
    end

    @impl Igniter.Mix.Task
    def igniter(igniter) do
      file =
        Enum.find(
          ["AGENTS.md", "CLAUDE.md", "RULES.md", "rules.md", "cursorrules", "rules"],
          "AGENTS.md",
          &Igniter.exists?(igniter, &1)
        )

      igniter
      |> Igniter.compose_task("usage_rules.sync", [
        file,
        "--all",
        "--link-to-folder",
        "deps",
        "--builtins",
        "elixir,otp"
      ])
    end
  end
else
  defmodule Mix.Tasks.UsageRules.Install do
    @shortdoc "#{__MODULE__.Docs.short_doc()} | Install `igniter` to use"

    @moduledoc __MODULE__.Docs.long_doc()

    use Mix.Task

    @impl Mix.Task
    def run(_argv) do
      Mix.shell().error("""
      The task 'usage_rules.install' requires igniter. Please install igniter and try again.

      For more information, see: https://hexdocs.pm/igniter/readme.html#installation
      """)

      exit({:shutdown, 1})
    end
  end
end