# frozen_string_literal: true

require "test_helper"
require "tmpdir"
require "volumen/cli"

class CLITest < Minitest::Test
  def test_version
    assert_output("#{Volumen::VERSION}\n") do
      Volumen::CLI.run(["version"])
    end
  end

  def test_help
    output, = capture_io { Volumen::CLI.run(["help"]) }
    assert_includes output, "volumen #{Volumen::VERSION}"
    assert_includes output, "Usage:"
  end

  def test_unknown_command
    _output, err = capture_io do
      assert_raises(SystemExit) { Volumen::CLI.run(["bogus"]) }
    end
    assert_includes err, "unknown command"
  end

  def test_parse_serve_defaults
    cli = Volumen::CLI.new(["serve"])
    options = cli.__send__(:parse_serve_options)
    assert_equal Volumen::Config::DEFAULT_PATH, options[:config]
  end

  def test_parse_serve_overrides
    cli = Volumen::CLI.new([
                             "serve", "--config", "/t.toml", "--host", "127.0.0.1", "--port", "9000"
                           ])
    options = cli.__send__(:parse_serve_options)
    assert_equal "/t.toml", options[:config]
    assert_equal "127.0.0.1", options[:host]
    assert_equal 9000, options[:port]
  end

  def test_prepare_config_writes_template
    Dir.mktmpdir do |dir|
      path = File.join(dir, "config.toml")
      cli = Volumen::CLI.new([])
      _output, err = capture_io { cli.__send__(:prepare_config, path) }
      assert_includes err, "wrote a default config"
      assert_path_exists path
    end
  end

  def test_prepare_config_noops_when_present
    Dir.mktmpdir do |dir|
      path = File.join(dir, "config.toml")
      File.write(path, "[server]\nport = 1\n")
      cli = Volumen::CLI.new([])
      out, err = capture_io { cli.__send__(:prepare_config, path) }
      assert_empty err
      assert_empty out
    end
  end
end