# frozen_string_literal: true
require "rails/generators"
require_relative "../../../../lib/generators/decidim/app_generator"

module Decidim
  module Generators
    # Generates a dummy test Rails app for the given library folder. It uses
    # the `AppGenerator` class to actually generate the Rails app, so this
    # generator only sets the path and some flags.
    #
    # The Rails app will be installed with some flags to disable git, tests,
    # Gemfile and other options. Refer to the `create_dummy_app` method to see
    # all the flags passed to the `AppGenerator` class, which is the one that
    # actually generates the Rails app.
    #
    # Remember that, for how generators work, actions are executed based on the
    # definition order of the public methods.
    class DummyGenerator < Rails::Generators::Base
      desc "Generate dummy app for testing purposes"

      class_option :lib_name, type: :string,
                              desc: "The library where the dummy app will be installed"

      class_option :migrate, type: :boolean, default: false,
                             desc: "Run migrations after installing decidim"

      def cleanup
        remove_directory_if_exists(dummy_path)
      end

      def create_dummy_app
        Decidim::Generators::AppGenerator.start [
          dummy_path,
          "--skip_gemfile",
          "--skip-bundle",
          "--skip-git",
          "--skip-keeps",
          "--skip-test",
          "--migrate=#{options[:migrate]}"
        ]
      end

      private

      def dummy_path
        ENV["DUMMY_PATH"] || "spec/#{short_lib_name}_dummy"
      end

      def remove_directory_if_exists(path)
        remove_dir(path) if File.directory?(path)
      end

      def short_lib_name
        options[:lib_name].split("/").last
      end
    end
  end
end