# encoding: utf-8
require 'fedux_org_stdlib/require_files'
require 'fedux_org_stdlib/rake/task'
require_library %w(i18n)
require 'tmpdir'
require 'fileutils'
require 'digest/sha2'

module FeduxOrgStdlib
  module Rake
    # Webserver Task
    #
    # @see Rakefile
    class WebserverTask < Task
      # @!attribute [r] report
      #   The report to be generated
      attr_reader :repository, :build_directory, :directory

      # Create a new webserver task
      #
      # @param [String] directory
      #   The directory where the generated server should be stored
      # @param [String] repository_url
      #   The url which should be used to fetch the remote repository
      # @param [Array] build_directory (/tmp/webserver.xxx)
      #   The directory where the executables should be build
      # @param [Array] build_script (build.sh)
      #   The script which should be used to build the executables
      #
      # @example Create new task
      #   FeduxOrgStdlib::Rake::WebserverTask.new
      def initialize(
        directory: File.expand_path('utils/server'),
        repository_url: 'https://github.com/dg-ratiodata/local_webserver',
        build_directory: Dir.mktmpdir('webserver'),
        build_script: 'build.sh',
        **args
      )
        super(**args)

        @repository      = FeduxOrgStdlib::RemoteRepository.new(repository_url)
        @directory       = File.expand_path(directory)
        @build_directory = File.expand_path(build_directory)
        @build_script    = build_script
      end

      # @private
      def run_task(_verbose)
        create_build_directory
        fetch_repository
        build_server
        copy_files_to_destination_directory
      end

      private

      def create_build_directory
        FileUtils.mkdir_p build_directory
      end

      def fetch_repository
        repository.clone_to build_directory
      end

      def build_server
        Dir.chdir build_directory do
          system File.join('.', build_script)
        end
      end

      def copy_files_to_destination_directory
        FileUtils.mkdir_p directory
        FileUtils.cp new_executable_files, directory
      end

      def new_executable_files
        Dir.glob(File.join(build_directory, '**', '*')).select { |f| File.executable? f }
      end
    end
  end
end