require 'rails_helper'

describe Invoice do
  context 'with invalid attribute' do
    before :all do
      @invoice = Invoice.new
    end

    it 'should not be valid' do
      @invoice.valid?
      @invoice.errors.full_messages.should match_array([
        "Buyer name is missing",
        "Currency is missing",
        "Due date is missing",
        "Invoice items is missing",
        "Invoice type is missing",
        "Seller iban is missing",
        "Seller name is missing",
        "Vat prc is missing"
      ])
    end

    it 'should not have any versions' do
      @invoice.versions.should == []
    end
  end

  context 'with valid attributes' do
    before :all do
      @invoice = create(:invoice)
    end

    it 'should be valid' do
      @invoice.valid?
      @invoice.errors.full_messages.should match_array([])
    end

    it 'should be valid twice' do
      @invoice = create(:invoice)
      @invoice.valid?
      @invoice.errors.full_messages.should match_array([])
    end

    it 'should be valid twice' do
      @invoice = create(:invoice)
      @invoice.valid?
      @invoice.errors.full_messages.should match_array([])
    end

    it 'should return correct addresses' do
      @invoice = create(:invoice)
      @invoice.seller_address.should == 'Paldiski mnt. 123, Tallinn'
    end

    it 'should calculate sums correctly' do
      @invoice = create(:invoice)
      @invoice.vat_prc.should == BigDecimal.new('0.2')
      @invoice.sum_without_vat.should == BigDecimal.new('300.0')
      @invoice.vat.should == BigDecimal.new('60.0')
      @invoice.sum.should == BigDecimal.new('360.0')

      ii = @invoice.items.first
      ii.item_sum_without_vat.should == BigDecimal.new('150.0')

      ii = @invoice.items.last
      ii.item_sum_without_vat.should == BigDecimal.new('150.0')
    end

    it 'should cancel overdue invoices' do
      create(:invoice, created_at: Time.zone.now - 35.days, due_date: Time.zone.now - 30.days)
      Invoice.cancel_overdue_invoices
      Invoice.where(cancelled_at: nil).count.should == 1
    end

    it 'should have one version' do
      with_versioning do
        @invoice.versions.should == []
        @invoice.buyer_name = 'New name'
        @invoice.save
        @invoice.errors.full_messages.should match_array([])
        @invoice.versions.size.should == 1
      end
    end
  end
end