wbailey/command_line_reporter

require 'singleton'
require 'colored'

module CommandLineReporter
  class NestedFormatter
    include Singleton
    include OptionsValidator

    VALID_OPTIONS = %i[message type complete indent_size color bold].freeze
    attr_accessor :indent_size, :complete_string, :message_string, :color, :bold

    def format(options, block)
      validate_options(options, *VALID_OPTIONS)

      indent_level :incr

      padding = ' ' * @indent_level * (options[:indent_size] || indent_size)

      message_str = padding + (options[:message] || message_string)
      complete_str = options[:complete] || complete_string

      if options[:type] == 'inline'
        colorize("#{message_str}...", true, options)
      else
        colorize(message_str, false, options)
        complete_str = padding + complete_str
      end

      block.call

      colorize(complete_str, false, options)

      indent_level :decr
    end

    def message_string
      @message_string ||= 'working'
    end

    def complete_string
      @complete_string ||= 'complete'
    end

    def indent_size
      @indent_size ||= 2
    end

    private

    def colorize(str, inline, options)
      str = str.send(options[:color]) if options[:color]
      str = str.bold if options[:bold]

      inline ? print(str) : puts(str)
    end

    def indent_level(value)
      case value
      when :incr
        @indent_level = @indent_level ? @indent_level + 1 : 0
      when :decr
        @indent_level -= 1
      end
    end
  end
end