defmodule Mix.Tasks.Example do
  @moduledoc """
  This is a Mix Task example using Nexus.
  Basically, you can `use` both `Mix.Task` and `Nexus.CLI`
  modules, define your commands as usual with `defcommand/2`
  and implement others callbacks.

  In a `Mix.Task` module, the `run/1` function will supply
  the behaviour, so you don't need to define it yourself.

  If you need to do other computations inside `Mix.Task.run/1`,
  then simply define `run/1` by yourself and call `__MODULE__.run/1`
  when you need it, passing the raw args to it.
  """

  use Mix.Task
  use Nexus.CLI, otp_app: :nexus_cli

  defcommand :foo do
    description "This is a foo command"
    value :string, required: false, default: "bar"
  end

  @impl Nexus.CLI
  def version, do: "0.1.0"

  @impl Nexus.CLI
  def banner, do: "Hello I'm a test"

  @impl Nexus.CLI
  def handle_input(:foo, _args) do
    IO.puts("Running :foo command...")
  end

  @impl Mix.Task
  def run(argv) when is_list(argv) do
    argv
    |> Enum.join(" ")
    |> execute()
  end
end