require "generators/generators_test_helper"
require "rails/generators/rails/app/app_generator"

class ApiAppGeneratorTest < Rails::Generators::TestCase
  include GeneratorsTestHelper
  tests Rails::Generators::AppGenerator

  arguments [destination_root, "--api"]

  def setup
    Rails.application = TestApp::Application
    super

    Kernel::silence_warnings do
      Thor::Base.shell.send(:attr_accessor, :always_force)
      @shell = Thor::Base.shell.new
      @shell.send(:always_force=, true)
    end
  end

  def teardown
    super
    Rails.application = TestApp::Application.instance
  end

  def test_skeleton_is_created
    run_generator

    default_files.each { |path| assert_file path }
    skipped_files.each { |path| assert_no_file path }
  end

  def test_api_modified_files
    run_generator

    assert_file "Gemfile" do |content|
      assert_no_match(/gem 'coffee-rails'/, content)
      assert_no_match(/gem 'sass-rails'/, content)
      assert_no_match(/gem 'web-console'/, content)
      assert_match(/# gem 'jbuilder'/, content)
    end

    assert_file "config/application.rb" do |content|
      assert_match(/config.api_only = true/, content)
    end

    assert_file "config/initializers/cors.rb"

    assert_file "config/initializers/wrap_parameters.rb"

    assert_file "app/controllers/application_controller.rb", /ActionController::API/
  end

  def test_generator_if_skip_action_cable_is_given
    run_generator [destination_root, "--skip-action-cable"]
    assert_file "config/application.rb", /#\s+require\s+["']action_cable\/engine["']/
    assert_no_file "config/cable.yml"
    assert_no_file "app/channels"
    assert_file "Gemfile" do |content|
      assert_no_match(/redis/, content)
    end
  end

  def test_app_update_does_not_generate_unnecessary_config_files
    run_generator

    generator = Rails::Generators::AppGenerator.new ["rails"],
      { api: true, update: true }, destination_root: destination_root, shell: @shell
    quietly { generator.send(:update_config_files) }

    assert_no_file "config/initializers/cookies_serializer.rb"
    assert_no_file "config/initializers/assets.rb"
  end

  def test_app_update_does_not_generate_unnecessary_bin_files
    run_generator

    generator = Rails::Generators::AppGenerator.new ["rails"],
      { api: true, update: true }, destination_root: destination_root, shell: @shell
    quietly { generator.send(:update_bin_files) }

    assert_no_file "bin/yarn"
  end

  private

    def default_files
      files = %W(
        .gitignore
        Gemfile
        Rakefile
        config.ru
        app/controllers
        app/mailers
        app/models
        app/views/layouts/mailer.html.erb
        app/views/layouts/mailer.text.erb
        config/environments
        config/initializers
        config/locales
        db
        lib
        lib/tasks
        log
        test/fixtures
        test/controllers
        test/integration
        test/models
        tmp
        vendor
      )
      files.concat %w(bin/bundle bin/rails bin/rake)
      files
    end

    def skipped_files
      %w(app/assets
         app/helpers
         app/views/layouts/application.html.erb
         bin/yarn
         config/initializers/assets.rb
         config/initializers/cookies_serializer.rb
         lib/assets
         test/helpers
         tmp/cache/assets
         public/404.html
         public/422.html
         public/500.html
         public/apple-touch-icon-precomposed.png
         public/apple-touch-icon.png
         public/favicon.icon
         package.json
      )
    end
end