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

require "jobshop/version"

module Jobshop
  class AppBuilder < Rails::AppBuilder
    def readme
      template "README.md.tt"
    end

    def procfile
      template "Procfile"
    end

    def gemfile
      super
      append_to_file "Gemfile", <<~GEMFILE
        \ngem "jobshop", "~> #{Jobshop.gem_version}"
      GEMFILE
    end

    def config_schema_format
      return if options[:pretend]

      data = "config.active_record.schema_format = :sql"
      sentinel = /class [a-z_:]+ < Rails::Application/i
      inject_into_file("config/application.rb", "\n    #{data}",
                       after: sentinel, verbose: true)
    end

    def mount_engine
      return if options[:pretend]

      route %Q(mount Jobshop::Engine => "/")
    end
  end

  module Generators
    class AppGenerator < Rails::Generators::AppGenerator
      def self.source_root
        File.expand_path("templates", __dir__)
      end

      def self.source_paths
        [ Rails::Generators::AppGenerator.source_root,
          Jobshop::Generators::AppGenerator.source_root ]
      end

      hide!

      class_option :help, type: :boolean, aliases: "-h", group: :other,
        desc: "Show this help message and quit"
      class_option :version, type: :boolean, aliases: "-v", group: :other,
              desc: "Show Jobshop version number and quit"

      def initialize(*args)
        super

        config = args.last.is_a?(Hash) ? args.pop : { }
        jobshop_options = config[:jobshop_options] || { }
        self.options = options.merge(jobshop_options).freeze
      end

      def create_root_files
        super
        build :procfile
      end

      def remove_session_store_initializer_until_rails_5_1
        remove_file "config/initializers/session_store.rb"
      end

      def finish_template
        generate "jobshop:config" unless options[:pretend]
        build :config_schema_format
        build :mount_engine
        super
      end

      def run_bundle
        super
        bundle_command("binstub jobshop") if bundle_install?
      end

    protected
      def get_builder_class
        Jobshop::AppBuilder
      end
    end
  end
end