class UrlValidator

# File lib/url_validator.rb, line 14
def default_options
  { scheme: nil, allow_no_scheme: false, allow_no_host: false }
end

# File lib/url_validator.rb, line 3
def valid?(value, options = {})
  options = default_options.merge(options)
  uri = URI.parse(value)

  [:scheme_appearance, :host_appearance, :scheme_type].all? do |method|
    send("validate_#{method}", uri, options)
  end
rescue URI::Error
  false
end

# File lib/url_validator.rb, line 24
def validate_host_appearance(uri, options)
  uri.host.nil? ? options[:allow_no_host] : true
end

# File lib/url_validator.rb, line 20
def validate_scheme_appearance(uri, options)
  uri.scheme.nil? ? options[:allow_no_scheme] : true
end

# File lib/url_validator.rb, line 28
def validate_scheme_type(uri, options)
  if options[:scheme]
    if uri.scheme.nil? && options[:allow_no_scheme]
      true
    else
      options[:scheme].include?(uri.scheme)
    end
  else
    true
  end
end

# File lib/url_validator.rb, line 41
def validate_each(record, attribute, value)
  unless self.class.valid?(value, options)
    record.errors.add(attribute, options[:message] || :invalid_url)
  end
end