class Directo < ActiveRecord::Base
  belongs_to :item, polymorphic: true

  def self.send_receipts
    new_trans = Invoice.where(invoice_type: "DEB", in_directo: false).where(cancelled_at: nil)
    total     = new_trans.count
    counter   = 0
    Rails.logger.info("[DIRECTO] Will try to send #{total} invoices")

    new_trans.find_in_batches(batch_size: 10).each do |group|
      mappers = {} # need them as no direct connection between invoice
      builder = Nokogiri::XML::Builder.new(encoding: "UTF-8") do |xml|
        xml.invoices {
          group.each do |invoice|

            if invoice.account_activity.nil? || invoice.account_activity.bank_transaction.nil? ||
                invoice.account_activity.bank_transaction.sum.nil? || invoice.account_activity.bank_transaction.sum != invoice.sum_cache
              Rails.logger.info("[DIRECTO] Invoice #{invoice.number} has been skipped")
              next
            end
            counter += 1

            num     = invoice.number
            mappers[num] = invoice
            xml.invoice(
                "SalesAgent"  => Setting.directo_sales_agent,
                "Number"      => num,
                "InvoiceDate" => invoice.created_at.strftime("%Y-%m-%dT%H:%M:%S"),
                "PaymentTerm" => Setting.directo_receipt_payment_term,
                "Currency"    => invoice.currency,
                "CustomerCode"=> invoice.buyer.try(:directo_handle)
            ){
              xml.line(
                  "ProductID"      => Setting.directo_receipt_product_name,
                  "Quantity"       => 1,
                  "UnitPriceWoVAT" => ActionController::Base.helpers.number_with_precision(invoice.sum_cache/(1+invoice.vat_prc), precision: 2, separator: "."),
                  "ProductName"    => invoice.description
              )
            }
          end
        }
      end

      data = builder.to_xml.gsub("\n",'')
      response = RestClient::Request.execute(url: ENV['directo_invoice_url'], method: :post, payload: {put: "1", what: "invoice", xmldata: data}, verify_ssl: false).to_s
      dump_result_to_db(mappers, response)
    end

    STDOUT << "#{Time.zone.now.utc} - Directo receipts sending finished. #{counter} of #{total} are sent\n"
  end

  def self.dump_result_to_db mappers, xml
    Nokogiri::XML(xml).css("Result").each do |res|
      obj = mappers[res.attributes["docid"].value.to_i]
      obj.directo_records.create!(response: res.as_json.to_h)
      obj.update_columns(in_directo: true)
      Rails.logger.info("[DIRECTO] Invoice #{res.attributes["docid"].value} was pushed and return is #{res.as_json.to_h.inspect}")
    end
  end
end