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# frozen_string_literal: true
require 'invisible_captcha/version'
require 'invisible_captcha/controller_ext'
require 'invisible_captcha/view_helpers'
require 'invisible_captcha/form_helpers'
require 'invisible_captcha/railtie'
module InvisibleCaptcha
class << self
attr_writer :sentence_for_humans,
:timestamp_error_message
attr_accessor :honeypots,
:timestamp_threshold,
:timestamp_enabled,
:visual_honeypots,
:injectable_styles,
:spinner_enabled,
:secret
def init!
# Default sentence for real users if text field was visible
self.sentence_for_humans = -> { I18n.t('invisible_captcha.sentence_for_humans', default: 'If you are a human, ignore this field') }
# Timestamp check enabled by default
self.timestamp_enabled = true
# Fastest time (in seconds) to expect a human to submit the form
self.timestamp_threshold = 4
# Default error message for validator when form submitted too quickly
self.timestamp_error_message = -> { I18n.t('invisible_captcha.timestamp_error_message', default: 'Sorry, that was too quick! Please resubmit.') }
# Make honeypots visibles
self.visual_honeypots = false
# If enabled, you should call anywhere in your layout the following helper, to inject the honeypot styles:
# <%= invisible_captcha_styles %>
self.injectable_styles = false
# Spinner check enabled by default
self.spinner_enabled = true
# A secret key to encode some internal values
self.secret = ENV['INVISIBLE_CAPTCHA_SECRET'] || SecureRandom.hex(64)
end
def sentence_for_humans
call_lambda_or_return(@sentence_for_humans)
end
def timestamp_error_message
call_lambda_or_return(@timestamp_error_message)
end
def setup
yield(self) if block_given?
end
def honeypots
@honeypots ||= (1..5).map { generate_random_honeypot }
end
def generate_random_honeypot
"abcdefghijkl-mnopqrstuvwxyz".chars.sample(rand(10..20)).join
end
def get_honeypot
honeypots.sample
end
def css_strategy
[
"display:none;",
"position:absolute!important;top:-9999px;left:-9999px;",
"position:absolute!important;height:1px;width:1px;overflow:hidden;"
].sample
end
def encode(value)
Digest::MD5.hexdigest("#{self.secret}-#{value}")
end
private
def call_lambda_or_return(obj)
obj.respond_to?(:call) ? obj.call : obj
end
end
end
InvisibleCaptcha.init!
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