class SyntaxTree::CLI::Options

def formatter_options
  @formatter_options ||=
    Formatter::Options.new(target_ruby_version: target_ruby_version)
end

def initialize
  @ignore_files = []
  @plugins = []
  @print_width = DEFAULT_PRINT_WIDTH
  @scripts = []
  @extension = ".rb"
  @target_ruby_version = DEFAULT_RUBY_VERSION
end

def parse(arguments)
  parser.parse!(arguments)
end

def parser
  OptionParser.new do |opts|
    # If there is a glob specified to ignore, then we'll track that here.
    # Any of the CLI commands that operate on filenames will then ignore
    # this set of files.
    opts.on("--ignore-files=GLOB") do |glob|
      @ignore_files << (glob.match(/\A'(.*)'\z/) ? $1 : glob)
    end
    # If there are any plugins specified on the command line, then load
    # them by requiring them here. We do this by transforming something
    # like
    #
    #     stree format --plugins=haml template.haml
    #
    # into
    #
    #     require "syntax_tree/haml"
    #
    opts.on("--plugins=PLUGINS") do |plugins|
      @plugins = plugins.split(",")
      @plugins.each { |plugin| require "syntax_tree/#{plugin}" }
    end
    # If there is a print width specified on the command line, then
    # parse that out here and use it when formatting.
    opts.on("--print-width=NUMBER", Integer) do |print_width|
      @print_width = print_width
    end
    # If there is a script specified on the command line, then parse
    # it and add it to the list of scripts to run.
    opts.on("-e SCRIPT") { |script| @scripts << script }
    # If there is a extension specified, then parse it and use it for
    # STDIN and scripts.
    opts.on("--extension=EXTENSION") do |extension|
      # Both ".rb" and "rb" are going to work
      @extension = ".#{extension.delete_prefix(".")}"
    end
    # If there is a target ruby version specified on the command line,
    # parse that out and use it when formatting.
    opts.on("--target-ruby-version=VERSION") do |version|
      @target_ruby_version = Formatter::SemanticVersion.new(version)
    end
  end
end