require 'rails'

module Admin
  module Generators
    class InstallGenerator < Rails::Generators::Base
      desc "rails g scaffold x, auto scaffold style."
      def concerns_initializer_file
        filePath = File.expand_path(File.dirname(File.dirname(__FILE__)))
        currPath = File.expand_path("../../", filePath)
        gemsPath = File.expand_path("../", currPath)
        jbuilderRails = "#{gemsPath}/jbuilder-2.6.0/lib/generators/rails"
        jbuilderRailsBak = "#{gemsPath}/jbuilder-2.6.0/lib/generators/rails_bak"
        railtiesErbTemplates = "#{gemsPath}/railties-5.0.0/lib/rails/generators/erb/scaffold/templates"
        railtiesErbTemplatesBak = "#{gemsPath}/railties-5.0.0/lib/rails/generators/erb/scaffold/templates_bak"
        railtiesScaffoldController = "#{gemsPath}/railties-5.0.0/lib/rails/generators/rails/scaffold_controller/scaffold_controller_generator.rb"
        railtiesScaffoldControllerBak = "#{gemsPath}/railties-5.0.0/lib/rails/generators/rails/scaffold_controller/scaffold_controller_generator.rb.bak"

        currJbuilderRails = "#{currPath}/concerns/jbuilder/lib/generators/rails"
        currRailtiesErbTemplates = "#{currPath}/concerns/railties/lib/rails/generators/erb/scaffold/templates"
        currRailtiesScaffoldController = "#{currPath}/concerns/railties/lib/rails/generators/rails/scaffold_controller/scaffold_controller_generator.rb"

        unless File.exist?(jbuilderRailsBak) && File.exist?(railtiesScaffoldControllerBak)
          FileUtils.mv jbuilderRails, jbuilderRailsBak
          FileUtils.cp_r currJbuilderRails, jbuilderRails
          FileUtils.mv railtiesScaffoldController, railtiesScaffoldControllerBak
          FileUtils.cp_r currRailtiesScaffoldController, railtiesScaffoldController
          puts "controller helper 重构成功！！！！！！！"
        else
          puts "！！！错误：controller helper 重构失败，备份文件已经存在，请先恢复或删除后重试"
        end

        unless File.exist?(railtiesErbTemplatesBak)
          FileUtils.mv railtiesErbTemplates, railtiesErbTemplatesBak
          FileUtils.cp_r currRailtiesErbTemplates, railtiesErbTemplates
          puts "views 模板重构成功！！！！！！！"
        else
          puts "！！！错误：views 模板重构失败，备份文件已经存在，请先恢复或删除后重试"
        end
      end
    end
  end
end