# Generates model-independent application basics (see method names).

module Katapult
  module Generators
    class BasicsGenerator < Rails::Generators::Base

      SKIP_GEMS = %w(sass-rails coffee-rails turbolinks sdoc uglifier)

      desc 'Generate basics like test directories and gems'
      source_root File.expand_path('../templates', __FILE__)

      class_option :db_user, type: :string, default: 'root',
        description: 'The user to set in config/database.yml'
      class_option :db_password, type: :string, default: '',
        description: 'The password to set in config/database.yml'


      def add_gitignore
        template '.gitignore', force: true
      end

      def write_ruby_version
        template '.ruby-version'
      end

      def write_database_ymls
        @db_user = options.db_user
        @db_password = options.db_password

        template 'config/database.yml', force: true
        template 'config/database.sample.yml'
      end

      # Overwrite Gemfile with the template, but transfer all gems that are not
      # skipped (see SKIP_GEMS).
      def enhance_gemfile
        gem_lines = File.readlines('Gemfile').select{ |line| line =~ /^gem/ }
        @original_gems = gem_lines.reject do |line|
          line =~ /'(#{ SKIP_GEMS.join '|' })'/
        end

        template 'Gemfile', force: true
      end

      def bundle_install
        run 'bundle install'

        # This is relevant for the server, so it may happen after bundling here.
        # By having Nokogiri use system libraries, it will get automatic updates
        # of the frequently broken libxml (i.e. when the system libxml updates).
        run 'bundle config --local build.nokogiri --use-system-libraries'
      end

      def remove_turbolinks_js
        gsub_file 'app/assets/javascripts/application.js', "//= require turbolinks\n", ''
        gsub_file 'app/views/layouts/application.html.erb', ", 'data-turbolinks-track' => true", ''
      end

      def setup_spring
        # run 'spring binstub --all'
        # # remove_file 'bin/bundle' # Won't play together with parallel_tests
        # template 'config/spring.rb'
        # template 'bin/rake'
        run 'spring stop' # Reload (just in case)
      end

      def setup_guard
        template 'Guardfile'
        environment 'config.middleware.use Rack::LiveReload', env: :development
      end

      def setup_staging
        FileUtils.copy 'config/environments/production.rb', 'config/environments/staging.rb'
        secret = `rake secret`.chomp
        # Cheating in the "staging" secret between "test" and "production"
        insert_into_file 'config/secrets.yml', <<~SECRET, after: "test:\n"
          secret_key_base: #{ secret }

        staging:
        SECRET
      end

      def create_databases
        run 'rake db:drop:all db:create:all parallel:create'
      end

      def configure_action_mailer
        app_con = 'app/controllers/application_controller.rb'
        inject_into_file app_con, <<-CONFIG, before: /end\n\z/
  before_filter :make_action_mailer_use_request_host_and_protocol

  private

  def make_action_mailer_use_request_host_and_protocol
    ActionMailer::Base.default_url_options[:protocol] = request.protocol
    ActionMailer::Base.default_url_options[:host] = request.host_with_port
  end
        CONFIG
      end

      def set_timezone
        gsub_file 'config/application.rb',
          /# config\.time_zone =.*$/,
          "config.time_zone = 'Berlin'"
      end

      def disable_asset_debugging # Faster
        gsub_file 'config/environments/development.rb',
          /config\.assets\.debug =.*$/,
          'config.assets.debug = false'
      end

      def install_initializers
        directory 'config/initializers'
      end

      def install_ext
        directory 'lib/ext'
      end

      def add_modularity_load_paths
        # This results in correct indentation :)
        application <<-'LOAD_PATHS'
config.autoload_paths << "#{Rails.root}/app/controllers/shared"
    config.autoload_paths << "#{Rails.root}/app/models/shared"
    config.autoload_paths << "#{Rails.root}/app/util"
    config.autoload_paths << "#{Rails.root}/app/util/shared"
        LOAD_PATHS
      end

      def install_cucumber
        generate 'cucumber:install'
        directory 'features/support'
        template 'config/cucumber.yml', force: true

        # Remove cucumber section from database.yml. Don't need this.
        gsub_file 'config/database.yml', /^cucumber.*\z/m, ''
      end

      def install_rspec
        generate 'rspec:install'

        gsub_file '.rspec', "--warnings\n", '' # Don't show Ruby warnings
        uncomment_lines 'spec/rails_helper.rb', /Dir.Rails.root.join.+spec.support/
        template 'spec/support/shoulda_matchers.rb'
        template 'spec/support/factory_girl.rb'
        directory 'spec/factories'
      end

      def install_capistrano
        # Create Capfile *before* installing Capistrano to prevent annoying
        # Harrow.io ad
        template 'Capfile', force: true
        run 'cap install'

        template 'config/deploy.rb', force: true
        template 'config/deploy/staging.rb', force: true
        template 'config/deploy/production.rb', force: true

        directory 'lib/capistrano/tasks'
        template 'lib/tasks/pending_migrations.rake'
      end

      def install_styles
        remove_file 'app/assets/stylesheets/application.css'
        directory 'app/assets/stylesheets', force: true
      end


    private

      def app_name
        File.basename(Dir.pwd)
      end

      def run(*)
        Bundler.with_clean_env do
          super
        end
      end

    end
  end
end