# frozen_string_literal: true

require 'spec_helper'

describe 'Updating existing objects with .parse and #parse' do
  let(:subject) { ParseInstanceSpec::Root.parse(parse_instance_initial_xml) }

  let(:parse_instance_initial_xml) do
    %(<root attr1="initial">
     <item attr1="initial">
       <description>initial</description>
       <subitem attr1="initial">
         <name>initial</name>
       </subitem>
       <subitem attr1="initial">
         <name>initial</name>
       </subitem>
     </item>
     <item attr1="initial">
       <description>initial</description>
       <subitem attr1="initial">
         <name>initial</name>
       </subitem>
       <subitem attr1="initial">
         <name>initial</name>
       </subitem>
     </item>
   </root>)
  end

  let(:parse_instance_updated_xml) do
    %(<root attr1="updated">
      <item attr1="updated">
        <description>updated</description>
        <subitem attr1="updated">
          <name>updated</name>
        </subitem>
        <subitem attr1="updated">
          <name>updated</name>
        </subitem>
      </item>
      <item attr1="updated">
        <description>updated</description>
        <subitem attr1="updated">
          <name>updated</name>
        </subitem>
        <subitem attr1="updated">
          <name>updated</name>
        </subitem>
      </item>
    </root>)
  end

  module ParseInstanceSpec
    class SubItem
      include HappyMapper
      tag 'subitem'
      attribute :attr1, String
      element :name, String
    end
    class Item
      include HappyMapper
      tag 'item'
      attribute :attr1, String
      element :description, String
      has_many :sub_items, SubItem
    end
    class Root
      include HappyMapper
      tag 'root'
      attribute :attr1, String
      has_many :items, Item
    end
  end

  def item_is_correctly_defined(item, value = 'initial')
    expect(item.attr1).to eq value
    expect(item.description).to eq value
    expect(item.sub_items[0].attr1).to eq value
    expect(item.sub_items[0].name).to eq value
    expect(item.sub_items[1].attr1).to eq value
    expect(item.sub_items[1].name).to eq value
  end

  it 'initial values are correct' do
    expect(subject.attr1).to eq('initial')
    item_is_correctly_defined(subject.items[0])
    item_is_correctly_defined(subject.items[1])
  end

  describe '.parse', 'specifying an existing object to update' do
    it 'all fields are correct' do
      ParseInstanceSpec::Root.parse(parse_instance_updated_xml, update: subject)
      expect(subject.attr1).to eq 'updated'

      item_is_correctly_defined(subject.items[0], 'updated')
      item_is_correctly_defined(subject.items[1], 'updated')
    end
  end

  describe '#parse' do
    it 'all fields are correct' do
      subject.parse(parse_instance_updated_xml)
      expect(subject.attr1).to eq 'updated'

      item_is_correctly_defined(subject.items[0], 'updated')
      item_is_correctly_defined(subject.items[1], 'updated')
    end
  end
end