module DistribBuilder
  module Versioner
    class ArgumentProcessor
      attr_accessor :show, :setup_version, :setup_build, :increment_build, :decrement_build, :verbose, :logger,
                    :option_keys

      # nlevchuk: need to use logger here without passing it through argument to .new()
      def initialize(args, logger=nil)
        @args = args
        @option_keys = []
        @logger = logger
        @show = nil
        @setup_version = nil
        @setup_build = nil
        @increment_build = false
        @decrement_build = false
        @verbose = false
      end

      def parse
        parser = OptionParser.new { |opts|
          opts.banner = 'Usage: distrib_builder version [options]'

          opts.on('-s', '--show [all|version|build]', String, [:all, :version, :build], 'Show current version and/or build') do |v|
            @show = v
            @option_keys << "show"
          end

          opts.on('--setup-version [VERSION]', String, 'Setup version VERSION in format: 1.2.3') do |v|
            @setup_version = v
            @option_keys << "setup-version"
          end

          opts.on('--setup-build [BUILD]', String, 'Setup build in format: 1') do |v|
            @setup_build = v
            @option_keys << "setup-build"
          end

          opts.on('-i', '--increment-build', 'Increment current build by 1') do
            @increment_build = true
            @option_keys << "increment-build"
          end

          opts.on('-d', '--decrement-build', 'Decrement current build by 1') do
            @decrement_build = true
            @option_keys << "decrement-build"
          end

          opts.on('--verbose', 'Output detail information about changed files') do
            @verbose = true
            @option_keys << "verbose"
          end

          opts.on('--help', 'Display нelp') {
            puts opts
            exit
          }
        }
        parser.parse!(@args.dup)
      end

      def validate_options
        if option_keys.include?("setup-build") && (setup_build.nil? || !/^\d+$/.match(setup_build))
          logger.incorrect_setup_build(setup_build)
        end
        if option_keys.include?("setup-version") && (setup_version.nil? || !/^\d+\.\d+\.\d+$/.match(setup_version))
          logger.incorrect_setup_version(setup_version)
        end
      end
    end
  end
end