# frozen_string_literal: true

module SewingKit
  class InstallGenerator < Rails::Generators::Base
    source_root File.expand_path('templates', __dir__)

    desc "Adds the configuration files for a sewing-kit powered front-end."

    class_option :skip_yarn, type: :boolean, default: false
    class_option :javascript_path, type: :string, default: 'app/ui'

    # We don't specify a default here because we want to fallback dynamically
    class_option :uses_dev, type: :boolean

    def initialize(args, *opts)
      super(args, *opts)

      @application_name = Project.app_name
      @javascript_path = options[:javascript_path]

      if Project.uses_webpacker?
        warn("
          WARNING: We've detected you currently have webpacker config at config/webpacker.yml.
          You may experience conflicts between sewing-kit and webpacker's behaviour as build tools.
          If your app was made with `rails new`, try rerunning it with `--skip-webpack-install --skip-javascript`
        ")
      end
    end

    def create_config_files
      say("Creating JS tooling config files")
      copy_file("editorconfig", ".editorconfig")
      copy_file("eslintignore", ".eslintignore")
      copy_file("prettierignore", ".prettierignore")
      template("package.json.erb", "package.json")
      template("tsconfig.json.erb", "tsconfig.json")
      template("sewing-kit.config.ts.erb", "config/sewing-kit.config.ts")
    end

    def install_js_dependencies
      return if options.skip_yarn?
      say("Installing javascript dependencies")
      system("yarn add @shopify/sewing-kit")
      system("yarn add typescript")
    end

    class Project
      def self.app_name
        Rails.application.class.module_parent.to_s.underscore
      end

      def self.uses_dev?
        File.exist?('dev.yml')
      end

      def self.uses_webpacker?
        File.exist?('config/webpacker.yml')
      end
    end
  end
end