require "db/mongo/models/stack/stack_factory"
require "lib/puts_and_flush"
require_relative "stack_executor/stack_creation_waiter"
require_relative "stack_executor/stack_servers_persister"
require_relative "stack_executor/prioritized_groups_bootstrapper"

module Devops
  module Executor
    class StackExecutor
      include PutsAndFlush
      attr_reader :out, :stack

      def initialize(options)
        @out = options.fetch(:out)
        @stack = options[:stack]
      end

      def wait_till_stack_is_created
        wait_result = StackCreationWaiter.new(stack, out).sync

        if wait_result.ok?
          puts_and_flush "\nStack '#{stack.name}' has been created"
          true
        else
          puts_and_flush "An error ocurred during stack creation: #{wait_result.reason}"
          false
        end
      end

      def create_stack(stack_attrs)
        @stack = Devops::Model::StackFactory.create(stack_attrs["provider"], stack_attrs, out)
        mongo.stack_insert(@stack)
      end

      def persist_stack_servers
        puts_and_flush 'Start saving stack servers into CID database.'
        persister = StackServersPersister.new(stack, out)
        persister.persist_new_servers
        puts_and_flush "Stack servers have been saved."
        {
          just_persisted_by_priority: persister.just_persisted_by_priority,
          deleted: persister.deleted
        }
      end

      def bootstrap_servers_by_priority(servers_by_priorities, jid)
        PrioritizedGroupsBootstrapper.new(out, jid, servers_by_priorities).bootstrap_servers_by_priority
      end

      def delete_stack
        stack.delete_stack_in_cloud!
        mongo.stack_servers_delete(stack.name)
        mongo.stack_delete(stack.id)
      end

      private

      def mongo
        Devops::Db.connector
      end

    end
  end
end