<?php

namespace Longyi\Gift\Services;

use Webkul\Checkout\Facades\Cart;
use Longyi\Gift\Models\GiftCards;

class GiftCardService
{
    /**
     * 激活礼品卡
     */
    public function activate(string $code, ?int $customerId = null): void
    {
        $customerId = $customerId ?? auth()->user()?->id;

        if (! $customerId) {
            throw new \Exception('Customer not authenticated.');
        }

        $giftCard = GiftCards::where('giftcard_number', $code)
            ->where('customer_id', $customerId)
            ->first();

        if (! $giftCard) {
            throw new \Exception('Gift card not found.');
        }

        $cart = Cart::getCart();

        if (!empty($cart->giftcard_amount)) {
            throw new \Exception(
                'The shopping cart has been paid with a gift card.'
            );
        }

        GiftCards::setGiftCardCode($giftCard);

        Cart::collectTotals();
    }


    /**
     * 删除礼品卡
     */
    public function remove(?int $customerId = null): void
    {
        $customerId = $customerId ?? auth()->user()?->id;

        $cart = Cart::getCart();

        GiftCards::removeGiftCardCode();

        Cart::collectTotals();

        if ($cart->giftcard_number && $customerId) {
            $giftCard = GiftCards::where(
                'giftcard_number',
                $cart->giftcard_number
            )
            ->where('customer_id', $customerId)
            ->first();

            if ($giftCard) {
                $giftCard->used_giftcard_amount = 0;
                $giftCard->remaining_giftcard_amount = $giftCard->giftcard_amount;
                $giftCard->save();
            }
        }
    }
}