# frozen_string_literal: true

require "mongoid"

class Child
  include Mongoid::Document
end

class Parent
  include Mongoid::Document

  embeds_many :children

  validate :custom_validation

  def custom_validation
    self.validates_length_of(:children, maximum: 2)
  end
end

Mongoid.connect_to("mongoid_test")
Mongoid.purge!

p = Parent.create!(children: [Child.new, Child.new])
puts "Created parent with 2 children"
puts "p.valid? #{p.valid?}"

puts
puts "Adding another child"
p.assign_attributes(children: p.children + [Child.new])
puts "now p.valid? #{p.valid?}"

puts
puts "Reloading parent"
p.reload
puts "reload did reset the embeds_many 'current' value: p.valid? #{p.valid?}"

puts
puts "There should be no updates since we just reloaded but atomic_updates is not empty:"
puts "  atomic_updates:", p.atomic_updates

puts
puts "Calling p.save"
p.save

puts
puts "the parent was saved in an invalid state"
p2 = Parent.first
puts "Parent.first.valid? #{p2.valid?}"
puts "Parent.first.children.length #{p2.children.length}"