require 'highline'

# Basic usage

cli = HighLine.new
answer = cli.ask "What do you think?"
puts "You have answered: #{answer}"


# Default answer

cli.ask("Company?  ") { |q| q.default = "none" }

## Disable default value hint showing

my_special_default_object = Object.new

cli.ask("Question?  ") do |q|
  q.default = my_special_default_object
  q.default_hint_show = false
end


# Validation

cli.ask("Age?  ", Integer) { |q| q.in = 0..105 }
cli.ask("Name?  (last, first)  ") { |q| q.validate = /\A\w+, ?\w+\Z/ }

## Validation with custom class
class ZeroToTwentyFourValidator
  def self.valid?(answer)
    (0..24).include? answer.to_i
  end

  def self.inspect
    "(0..24) rule"
  end
end

cli.ask("What hour of the day is it?:  ", Integer) do |q|
  q.validate = ZeroToTwentyFourValidator
end

## Validation with Dry::Types
## `Dry::Types` provides a `valid?` method so it can be used effortlessly

require 'dry-type'

module Types
  include Dry.Types
end

cli.ask("Type an integer:", Integer) do |q|
  q.validate = Types::Coercible::Integer
end

# Type conversion for answers:

cli.ask("Birthday?  ", Date)
cli.ask("Interests?  (comma sep list)  ", lambda { |str| str.split(/,\s*/) })


# Reading passwords:

cli.ask("Enter your password:  ") { |q| q.echo = false }
cli.ask("Enter your password:  ") { |q| q.echo = "x" }


# ERb based output (with HighLine's ANSI color tools):

cli.say("This should be <%= color('bold', BOLD) %>!")


# Menus:

cli.choose do |menu|
  menu.prompt = "Please choose your favorite programming language?  "
  menu.choice(:ruby) { cli.say("Good choice!") }
  menu.choices(:python, :perl) { cli.say("Not from around here, are you?") }
  menu.default = :ruby
end

## Using colored indices on Menus

HighLine::Menu.index_color   = :rgb_77bbff # set default index color

cli.choose do |menu|
  menu.index_color  = :rgb_999999      # override default color of index
                                       # you can also use constants like :blue
  menu.prompt = "Please choose your favorite programming language?  "
  menu.choice(:ruby) { cli.say("Good choice!") }
  menu.choices(:python, :perl) { cli.say("Not from around here, are you?") }
end

require 'highline/import'

say "Now you can use #say directly"

source "https://rubygems.org"
gem 'highline'