nshop/packages/Longyi/Gift/src/Repositories/CustomInvoiceRepository.php

<?php

namespace Longyi\Gift\Repositories;

use Illuminate\Support\Facades\Event;
use Webkul\Sales\Repositories\InvoiceRepository as BaseInvoiceRepository;

class CustomInvoiceRepository extends BaseInvoiceRepository
{
    public function collectTotals($invoice)
    {
        $invoice->sub_total = $invoice->base_sub_total = 0;
        $invoice->sub_total_incl_tax = $invoice->base_sub_total_incl_tax = 0;
        $invoice->tax_amount = $invoice->base_tax_amount = 0;
        $invoice->shipping_tax_amount = $invoice->shipping_tax_amount = 0;
        $invoice->discount_amount = $invoice->base_discount_amount = 0;
        $invoice->giftcard_amount = $invoice->giftcard_amount = 0;
        $invoice->base_giftcard_amount = $invoice->base_giftcard_amount = 0;
        $invoice->vip_plus_amount = $invoice->base_vip_plus_amount = 0;
        $invoice->vip_discount_amount = $invoice->base_vip_discount_amount = 0;
        $invoice->shipping_insurance_amount = $invoice->base_shipping_insurance_amount = 0;
        $invoice->reward_points_amount = $invoice->base_reward_points_amount = 0;

        foreach ($invoice->items as $item) {
            $invoice->tax_amount += $item->tax_amount;
            $invoice->base_tax_amount += $item->base_tax_amount;

            $invoice->discount_amount += $item->discount_amount;
            $invoice->base_discount_amount += $item->base_discount_amount;

            $invoice->sub_total += $item->total;
            $invoice->base_sub_total += $item->base_total;

            $invoice->sub_total_incl_tax = (float) $invoice->sub_total_incl_tax + $item->total_incl_tax;
            $invoice->base_sub_total_incl_tax = (float) $invoice->base_sub_total_incl_tax + $item->base_total_incl_tax;
        }

        $invoice->shipping_amount = $invoice->order->shipping_amount;
        $invoice->shipping_amount_incl_tax = $invoice->order->shipping_amount_incl_tax;

        $invoice->base_shipping_amount = $invoice->order->base_shipping_amount;
        $invoice->base_shipping_amount_incl_tax = $invoice->order->base_shipping_amount_incl_tax;

        $invoice->discount_amount += $invoice->order->shipping_discount_amount;
        $invoice->base_discount_amount += $invoice->order->base_shipping_discount_amount;

        $invoice->giftcard_amount += $invoice->order->giftcard_amount;
        $invoice->base_giftcard_amount += $invoice->order->base_giftcard_amount;
        $invoice->giftcard_number = $invoice->order->giftcard_number;

        $invoice->vip_plus_amount += $invoice->order->vip_plus_amount;
        $invoice->base_vip_plus_amount += $invoice->order->base_vip_plus_amount;
        $invoice->vip_discount_amount += $invoice->order->vip_discount_amount;
        $invoice->base_vip_discount_amount += $invoice->order->base_vip_discount_amount;

        $invoice->shipping_insurance_amount += $invoice->order->shipping_insurance_amount;
        $invoice->base_shipping_insurance_amount += $invoice->order->base_shipping_insurance_amount;

        $invoice->reward_points_amount += $invoice->order->reward_points_amount;
        $invoice->base_reward_points_amount += $invoice->order->base_reward_points_amount;

        if ($invoice->order->shipping_tax_amount) {
            $invoice->shipping_tax_amount = $invoice->order->shipping_tax_amount;

            $invoice->base_shipping_tax_amount = $invoice->order->base_shipping_tax_amount;

            $invoice->tax_amount += $invoice->order->shipping_tax_amount;

            $invoice->base_tax_amount += $invoice->order->base_shipping_tax_amount;

            foreach ($invoice->order->invoices as $prevInvoice) {
                if ((float) $prevInvoice->shipping_tax_amount) {
                    $invoice->shipping_tax_amount = $invoice->base_shipping_tax_amount = 0;

                    $invoice->tax_amount -= $invoice->order->shipping_tax_amount;

                    $invoice->base_tax_amount -= $invoice->order->base_shipping_tax_amount;
                }
            }
        }

        if ($invoice->order->shipping_amount) {
            foreach ($invoice->order->invoices as $prevInvoice) {
                if ((float) $prevInvoice->shipping_amount) {
                    $invoice->shipping_amount = $invoice->base_shipping_amount = 0;
                    $invoice->shipping_amount_incl_tax = $invoice->base_shipping_amount_incl_tax = 0;
                }

                if ($prevInvoice->id != $invoice->id) {
                    $invoice->discount_amount -= $invoice->order->shipping_discount_amount;
                    $invoice->base_discount_amount -= $invoice->order->base_shipping_discount_amount;
                }
            }
        }

        $invoice->grand_total = $invoice->sub_total + $invoice->tax_amount + $invoice->shipping_amount - $invoice->discount_amount - $invoice->giftcard_amount + $invoice->vip_plus_amount - $invoice->vip_discount_amount + $invoice->shipping_insurance_amount - $invoice->reward_points_amount;
        $invoice->base_grand_total = $invoice->base_sub_total + $invoice->base_tax_amount + $invoice->base_shipping_amount - $invoice->base_discount_amount - $invoice->base_giftcard_amount + $invoice->base_vip_plus_amount - $invoice->base_vip_discount_amount + $invoice->base_shipping_insurance_amount - $invoice->base_reward_points_amount;

        $invoice->save();
        return $invoice;
    }
}