# frozen_string_literal: true

require 'eac_cli/core_ext'

module Ehbrs
  module Tools
    module RunnerWith
      module FilesystemRenamer
        common_concern do
          runner_with :confirmation, :filesystem_traverser
          prepend PrependMethods
        end

        class RenameFile
          enable_speaker
          common_constructor :runner, :file
          delegate :path, :target_path, :valid?, to: :file

          CONFIRM_MESSAGE = 'Rename?'

          def show
            if rename?
              puts [target_path_to_s, '<='.green, path_to_s].join(' ')
            else
              puts path_to_s
            end
          end

          def rename
            return unless rename?

            show
            do_rename if runner.confirm?(CONFIRM_MESSAGE)
          end

          # @return [Boolean]
          def rename?
            path.to_pathname != target_path.to_pathname
          end

          private

          def do_rename
            ::FileUtils.mv(path, target_path)
          end

          # @return [String]
          def path_to_s
            path.basename.to_path.light_black
          end

          # @return [String]
          def target_path_to_s
            target_path.relative_path_from(path.dirname).to_path
          end
        end

        module PrependMethods
          # @param path [Pathname]
          # @return [void]
          def traverser_check_file(path)
            file = RenameFile.new(self, file_class.new(path))
            files << file if file.valid?
          end
        end

        FILE_WRAPPER_CLASS_BASENAME = 'FileWrapper'

        # @return [Class]
        def file_class
          self.class.const_get(FILE_WRAPPER_CLASS_BASENAME)
        end

        # @return [void]
        def run_filesystem_renamer
          self.files = []
          run_filesystem_traverser
          show_files
          rename_files
          success 'Done'
        end

        # @return [void]
        def show_files
          infov 'Files found', files.count
          files.each(&:show)
        end

        # @return [void]
        def rename_files
          return if parsed.no? || files.none?(&:rename?)

          infom 'Renaming files...'
          files.each(&:rename)
        end

        private

        attr_accessor :files
      end
    end
  end
end