require "rails/generators/base"

module DuodealerApp
  module Generators
    class AddWebhookGenerator < Rails::Generators::Base
      source_root File.expand_path("../templates", __FILE__)
      class_option :topic, type: :string, aliases: "-t", required: true
      class_option :address, type: :string, aliases: "-a", required: true

      hook_for :test_framework, as: :job, in: :rails do |instance, generator|
        instance.invoke generator, [ instance.send(:job_file_name) ]
      end

      def init_webhook_config
        initializer = load_initializer
        return if initializer.include?("config.webhooks")

        inject_into_file(
          "config/initializers/duodealer_app.rb",
          "  config.webhooks = [\n  ]\n",
          before: "end"
        )
      end

      def inject_webhook_to_duodealer_app_initializer
        inject_into_file(
          "config/initializers/duodealer_app.rb",
          webhook_config,
          after: "config.webhooks = ["
        )

        initializer = load_initializer

        unless initializer.include?(webhook_config)
          shell.say "Error adding webhook to config. Add this line manually: #{webhook_config}", :red
        end
      end

      def add_webhook_job
        @job_file_name = job_file_name + "_job"
        @job_class_name = @job_file_name.classify
        template "webhook_job.rb", "app/jobs/#{@job_file_name}.rb"
      end

      private
        def job_file_name
          address.split("/").last
        end

        def load_initializer
          File.read(File.join(destination_root, "config/initializers/duodealer_app.rb"))
        end

        def webhook_config
          "\n    {topic: '#{topic}', address: '#{address}', format: 'json'},"
        end

        def topic
          options["topic"]
        end

        def address
          options["address"]
        end
    end
  end
end