proto.rb

require 'pry'
require 'apress/clearance'
require 'apress/orders'
require 'active_record'
require 'active_support'
require 'combustion'
require 'interactor'
require 'tsort'

DO_NOT_REPLY = 'qq'
DO_NOT_REPLY_RETURN_PATH = 'qwert'
APP_NAME = HOST = 'test.dev'

CONF = abcs = YAML.load(ERB.new(File.read(File.expand_path("../spec/internal/config/database.yml", __FILE__))).result)

Combustion::Database.drop_database(abcs['test_orders'])
Combustion::Database.create_database(abcs['test_orders'])

Combustion.initialize! :active_record

class MergeService
  extend ActiveModel::Callbacks

  define_model_callbacks :merge, only: :around

  class Operation
    attr_reader :klass, :name

    def initialize(name, klass, options)
      @name, @klass, @options = name, klass, options
    end

    def before
      @options[:before]
    end

    def after
      @options[:after]
    end

    def call
      @klass.call
    end
  end

  class Collection < Array
    include TSort

    alias :tsort_each_node :each
    def tsort_each_child(operation, &block)
      select { |i| i.before == operation.name || i.name == operation.after }.each(&block)
    end
  end

  def self.add(name, klass, opts = {})
    opts[:after] ||= operations.last.name unless operations.empty? || operations.find { |i| i.name == opts[:before] }
    operation = Operation.new(name, klass, opts)

    if operation.klass.respond_to?(:connection)
      around_merge operation.klass

      operation.klass.class_eval do
        def self.around_merge(_)
          connection.transaction { yield }
        end
      end
    end

    @operations ||= Collection.new
    @operations << operation
  end

  def self.operations
    @operations || Collection.new
  end

  def call
    ::User.transaction do
      run_callbacks :merge do
        self.class.operations.tsort_each do |o|
          o.call
        end
      end
    end
  end
end

class UserOperation
  def self.call
    p 'user call'
    User.create!(email: 'tests@mail.ru', name: 'test', password: 'qwerty', password_confirmation: 'qwerty')
  end
end

class OrderOperation
  def self.connection
    Apress::Orders::Order.connection
  end

  def self.call
    p 'orders call'

    folder = Apress::Orders::Folder.new(name: 'test', slug: 'test', company_id: 1)

    order = Apress::Orders::Order.new(
      company_id: 1,
      user_id: 1,
      folder_id: folder.id,
      company_main_region_id: 1,
      packet_id: 1,
      order_type: Product.to_s
    )

    order.save(validate: false)
  end
end

class AnotherOrderOperation
  def self.connection
    Apress::Orders::Order.connection
  end
  
  def self.call
    p 'orders call'

    folder = Apress::Orders::Folder.new(name: 'test', slug: 'test', company_id: 1)


    order = Apress::Orders::Order.new(
      company_id: 1,
      user_id: 1,
      folder_id: folder.id,
      company_main_region_id: 1,
      packet_id: 1,
      order_type: Product.to_s
    )

    order.save(validate: false)
  end
end


MergeService.add(:users, UserOperation)
MergeService.add(:orders_1, OrderOperation)
MergeService.add(:orders_2, AnotherOrderOperation, before: :users)

begin
  MergeService.new.call
ensure
  p User.last
  p Apress::Orders::Order.last
end