require_relative 'env'

require 'alephant/publisher/version'
require 'alephant/publisher/options'
require 'alephant/publisher/sqs_helper/queue'
require 'alephant/publisher/sqs_helper/archiver'
require 'alephant/logger'
require 'alephant/support/aop'
require 'alephant/publisher/processor'
require 'alephant/publisher/views'
require 'alephant/publisher/views/base'

module Alephant
  module Publisher
    include Logger
    extend Alephant::Support::AOP

    def self.create(opts = {}, processor = nil)
      processor ||= Processor.new(opts.writer)
      Publisher.new(opts, processor)
    end

    class Publisher
      VISIBILITY_TIMEOUT = 60
      RECEIVE_WAIT_TIME  = 15

      attr_reader :queue, :executor, :opts, :processor

      def initialize(opts, processor = nil)
        @opts = opts
        @processor = processor

        @queue = SQSHelper::Queue.new(
          aws_queue,
          archiver,
          opts.queue[:visibility_timeout] || VISIBILITY_TIMEOUT,
          opts.queue[:receive_wait_time]  || RECEIVE_WAIT_TIME,
        )
      end

      def run!
        loop { processor.consume(@queue.message) }
      end

      private

      def archiver
        SQSHelper::Archiver.new(archive_cache)
      end

      def archive_cache
        Cache.new(
          opts.writer[:s3_bucket_id],
          opts.writer[:s3_object_path]
        )
      end

      def aws_queue
        AWS::SQS.new.queues[opts.queue[:sqs_queue_url]]
      end

    end
  end
end