require 'faraday'

require_relative "mailstro/version"
require_relative "mailstro/configuration"
require_relative "mailstro/error"
require_relative "mailstro/resource"
require_relative "mailstro/delivery"
require_relative "mailstro/list_delivery"
require_relative "mailstro/list_subscribe"
require_relative "mailstro/list_unsubscribe"

module Mailstro

  # Allows us to remove default behaviour during testing.
  class RealStrategy
    class << self
      def deliver(options)
        Delivery.new(options).deliver
      end
      def list_deliver(options)
        ListDelivery.new(options).deliver
      end
      def subscribe(contact_email, list_type, list_name)
        ListSubscribe.new(contact_email, list_type, list_name).deliver
      end
      def unsubscribe(contact_email, list_type, list_name)
        ListUnsubscribe.new(contact_email, list_type, list_name).deliver
      end
    end
  end

  class << self
    attr_accessor :configuration, :strategy
  end

  @strategy      = RealStrategy
  @configuration = Configuration.new

  def self.configure
    yield(@configuration) && @configuration.validate!
  end

  def self.deliver(options)
    if options[:to].is_a?(Array)
      @strategy.list_deliver(options)
    else
      @strategy.deliver(options)
    end
  end

  def self.subscribe(contact_email, list_type, list_name)
    @strategy.subscribe(contact_email, list_type, list_name)
  end

  def self.unsubscribe(contact_email, list_type, list_name)
    @strategy.unsubscribe(contact_email, list_type, list_name)
  end

  def self.has_delivered?(template_name)
    TestStrategy.has_delivered?(template_name)
  end

  def self.has_subscribed?(contact_email, list_type, list_name)
    TestStrategy.has_subscribed?(contact_email, list_type, list_name)
  end

  def self.has_unsubscribed?(contact_email, list_type, list_name)
    TestStrategy.has_unsubscribed?(contact_email, list_type, list_name)
  end
end