# Copyright (c) 2008-16 Peter H. Boling of RailsBling.com
# Released under the MIT license

module SanitizeEmail
  # The API for configuring SanitizeEmail is via `SanitizeEmail.config`
  # Available configuration options are listed in the `DEFAULTS` constant.
  class Config

    extend SanitizeEmail::Deprecation

    class << self
      attr_accessor :config
    end

    DEFAULTS = {
      # Specify the BCC addresses for the messages
      #   that go out in "local" environments
      :sanitized_bcc => nil,

      # Specify the CC addresses for the messages
      #   that go out in "local" environments
      :sanitized_cc => nil,

      # The recipient addresses for the messages,
      #   either as a string (for a single address)
      #   or an array (for multiple addresses)
      #   that go out in "local" environments
      :sanitized_to => nil,

      # a white list
      :good_list => nil,

      # a black list
      :bad_list => nil,

      :environment => if defined?(Rails) && Rails.env.present?
                        ("[" << Rails.env << "]")
                      else
                        "[UNKNOWN ENVIRONMENT]"
                      end,

      # Use the "real" email address as the username
      #   for the sanitized email address
      # e.g. "real@example.com <sanitized@example.com>"
      :use_actual_email_as_sanitized_user_name => false,

      # Prepend the "real" email address onto the Subject line of the message
      # e.g. "real@example.com rest of subject"
      :use_actual_email_prepended_to_subject => false,

      # Prepend the Rails environment onto the Subject line of the message
      # e.g. "[development] rest of subject"
      :use_actual_environment_prepended_to_subject => false,

      # True / False turns on or off sanitization,
      #   while nil ignores this setting and checks activation_proc
      :engage => nil,

      :activation_proc => Proc.new { false }
    }

    @config ||= DEFAULTS.dup
    def self.configure &block
      yield @config

      # Gracefully handle deprecated config values.
      # Actual deprecation warnings are thrown in the top SanitizeEmail module
      #   thanks to our use of dynamic methods.
      if @config[:local_environments] && defined?(Rails)
        @config[:activation_proc] = Proc.new {
          SanitizeEmail.local_environments.include?(Rails.env)
        }
      end
      if @config[:sanitized_recipients]
        # calling it to trigger the deprecation warning.
        # Won't actually be set with any value,
        # because we are still inside the configure block.
        SanitizeEmail.sanitized_recipients
        @config[:sanitized_to] = @config[:sanitized_recipients]
      end
      if !@config[:force_sanitize].nil?
        deprecation_warning_message(
            <<-EOS
              SanitizeEmail::Config.config[:force_sanitize] is deprecated.
              Please use SanitizeEmail.force_sanitize or SanitizeEmail.sanitary instead.
              Refer to https://github.com/pboling/sanitize_email/wiki for examples.
            EOS
        )
        SanitizeEmail.force_sanitize = @config[:force_sanitize]
      end
    end

  end
end