# frozen_string_literal: true

require "sewing_kit/webpack/webpack"

module SewingKit
  module Webpack
    class Compiler
      class NodeNotInstalled < StandardError
        def initialize
          super(
            "nodejs is not installed.  " \
            "Try creating a `.buildpacks` file in the root of the project with following content:

            https://github.com/heroku/heroku-buildpack-nodejs.git
            https://github.com/heroku/heroku-buildpack-ruby.git
            "
          )
        end
      end

      def compile
        raise NodeNotInstalled unless node_installed?
        raise NodeSewingKitNotRunnable, node_env unless File.exist?("node_modules/.bin/sewing-kit")

        result = Kernel.system(
          environment,
          *command,
          chdir: Rails.root.to_s,
          out: $stdout,
          err: $stderr
        )

        unless result
          puts "sewing-kit compile failed with error code #{$CHILD_STATUS}"
          exit(1)
        end
        result
      end

      private

      def command
        [
          "node_modules/.bin/sewing-kit",
          "build",
          "--mode",
          node_env,
        ].concat(options).reject(&:empty?)
      end

      def environment
        {
          "NODE_ENV" => node_env,
          "SK_ASSET_DIR" => asset_dir,
        }.filter { |_, v| v }
      end

      def node_env
        ENV["NODE_ENV"] || Rails.env.to_s
      end

      def asset_dir
        directory = SewingKit.configuration.build_options&.dig(:asset_directory)

        return nil if directory == false
        return ShopifyCloud::AssetUploader.asset_directory if directory.nil? && defined?(ShopifyCloud)

        directory
      end

      def options
        build_options = SewingKit.configuration.build_options&.except(:asset_directory)
        return [] unless build_options

        build_options.map { |key, value| ["--#{key.to_s.tr("_", "-")}", value.to_s] }.flatten
      end

      def node_installed?
        Kernel.system("node --version")
      end
    end
  end
end