module MailgunEmailValidator

# File lib/mailgun_email_validator/validator.rb, line 9
def valid_email_with_mailgun?(email)
  !! parsed_validation_response!(email)["is_valid"]
end

# File lib/mailgun_email_validator/validator.rb, line 21
def validates_as_email_with_mailgun(*attrs)
  options = DEFAULT_VALIDATION_OPTIONS
  options.update(attrs.extract_options!.symbolize_keys)

  send(validation_method(options[:on]), options) do |record, attr, value|
    if options[:allow_nil]
      return if record.nil?
    elsif options[:allow_blank]
      return if record.blank?
    else
      begin
        parsed = parsed_validation_response!(value)
        is_valid = !parsed["is_valid"].nil? ? parsed["is_valid"] : false
        message = options[:message] ? options[:message] : "supplied email is invalid."
        record.errors.add(attr, message) if !is_valid
      rescue
        validates record, email: true
      end
    end
  end
end

# File lib/mailgun_email_validator/validator.rb, line 13
def validation_method(on)
  case on
    when :save   then :validate
    when :create then :validate_on_create
    when :update then :validate_on_update
  end
end

# File lib/mailgun_email_validator/validator.rb, line 50
def mailgun_public_key
  @@mailgun_public_key || ENV['MAILGUN_PUBLIC_KEY'] || raise("You need to supply your mailgun public api key")
end

# File lib/mailgun_email_validator/validator.rb, line 45
def parsed_validation_response!(email)
  res = RestClient.get "https://api:#{mailgun_public_key}@api.mailgun.net/v2/address/validate", {params: {address: email}}
  JSON.parse(res)
end