Install the Gift Cards feature

<?php

namespace Pyz\Zed\GiftCard;

use Spryker\Shared\Shipment\ShipmentConfig;
use Spryker\Zed\GiftCard\GiftCardConfig as SprykerGiftCardConfig;

class GiftCardConfig extends SprykerGiftCardConfig
{
    /**
     * Provides a list of shipment method names that should be available in case there are only gift card items in the quote.
     *
     * @return array
     */
    public function getGiftCardOnlyShipmentMethods(): array
    {
        return [
            ShipmentConfig::SHIPMENT_METHOD_NAME_NO_SHIPMENT,
        ];
    }
}

<?php

use Spryker\Shared\Kernel\KernelConstants;
use Spryker\Shared\Nopayment\NopaymentConfig;
use Spryker\Shared\Nopayment\NopaymentConstants;
use Spryker\Shared\Oms\OmsConstants;
use Spryker\Shared\Sales\SalesConstants;
use Spryker\Zed\GiftCard\GiftCardConfig;

// ---------- Dependency injector
$config[KernelConstants::DEPENDENCY_INJECTOR_ZED] = [
    'Oms' => [
        GiftCardConfig::PROVIDER_NAME,
    ],
];

$config[NopaymentConstants::NO_PAYMENT_METHODS] = [
    NopaymentConfig::PAYMENT_PROVIDER_NAME,
];
$config[NopaymentConstants::WHITELIST_PAYMENT_METHODS] = [
    GiftCardConfig::PROVIDER_NAME,
];

// ---------- State machine (OMS)
$config[OmsConstants::ACTIVE_PROCESSES] = [
    'Nopayment01',
];
$config[SalesConstants::PAYMENT_METHOD_STATEMACHINE_MAPPING] = [
    GiftCardConfig::PROVIDER_NAME => 'DummyPayment01', // Order State Machine name of your choice
    NopaymentConfig::PAYMENT_PROVIDER_NAME => 'Nopayment01',
];

<?php

namespace Pyz\Zed\GiftCard;

use Spryker\Shared\DummyPayment\DummyPaymentConfig;
use Spryker\Zed\GiftCard\GiftCardConfig as SprykerGiftCardConfig;

class GiftCardConfig extends SprykerGiftCardConfig
{
    /**
     * Provides a list of payment method names that are disabled to use when the quote contains gift card item(s) to purchase.
     *
     * @return array
     */
    public function getGiftCardPaymentMethodBlacklist(): array
    {
        return [
            DummyPaymentConfig::PAYMENT_METHOD_INVOICE,
        ];
    }
}

<?php

namespace Pyz\Zed\Sales;

use Spryker\Zed\Sales\SalesConfig as SprykerSalesConfig;

class SalesConfig extends SprykerSalesConfig
{
    /**
     * @return array
     */
    public function getSalesDetailExternalBlocksUrls()
    {
        $projectExternalBlocks = [
            'giftCards' => '/gift-card/sales/list', // lists used gift cards for the order
        ];

        $externalBlocks = parent::getSalesDetailExternalBlocksUrls();

        return array_merge($externalBlocks, $projectExternalBlocks);
    }
}

<?php

namespace Pyz\Zed\Calculation;

use Spryker\Zed\Calculation\CalculationDependencyProvider as SprykerCalculationDependencyProvider;
use Spryker\Zed\GiftCard\Communication\Plugin\GiftCardCalculatorPlugin;
use Spryker\Zed\Kernel\Container;

class CalculationDependencyProvider extends SprykerCalculationDependencyProvider
{
    /**
     * @param \Spryker\Zed\Kernel\Container $container
     *
     * @return \Spryker\Zed\CalculationExtension\Dependency\Plugin\CalculationPluginInterface[]
     */
    protected function getQuoteCalculatorPluginStack(Container $container)
    {
        return [
            new GiftCardCalculatorPlugin(),
        ];
    }
}

<?php

namespace Pyz\Zed\Cart;

use Spryker\Zed\Cart\CartDependencyProvider as SprykerCartDependencyProvider;
use Spryker\Zed\GiftCard\Communication\Plugin\GiftCardMetadataExpanderPlugin;
use Spryker\Zed\Kernel\Container;

class CartDependencyProvider extends SprykerCartDependencyProvider
{
    /**
     * @param \Spryker\Zed\Kernel\Container $container
     *
     * @return \Spryker\Zed\Cart\Dependency\ItemExpanderPluginInterface[]
     */
    protected function getExpanderPlugins(Container $container)
    {
        return [
            new GiftCardMetadataExpanderPlugin(),
        ];
    }
}

<?php

namespace Pyz\Zed\Discount;

use Spryker\Zed\Discount\DiscountDependencyProvider as SprykerDiscountDependencyProvider;
use Spryker\Zed\GiftCard\Communication\Plugin\GiftCardDiscountableItemFilterPlugin;

class DiscountDependencyProvider extends SprykerDiscountDependencyProvider
{
    /**
     * @return array
     */
    protected function getDiscountableItemFilterPlugins()
    {
        return [
            new GiftCardDiscountableItemFilterPlugin(),
        ];
    }
}

<?php

namespace Pyz\Zed\Mail;

use Spryker\Zed\GiftCardMailConnector\Communication\Plugin\Mail\GiftCardDeliveryMailTypePlugin;
use Spryker\Zed\Kernel\Container;
use Spryker\Zed\Mail\Business\Model\Mail\MailTypeCollectionAddInterface;
use Spryker\Zed\Mail\MailDependencyProvider as SprykerMailDependencyProvider;

class MailDependencyProvider extends SprykerMailDependencyProvider
{
    /**
     * @param \Spryker\Zed\Kernel\Container $container
     *
     * @return \Spryker\Zed\Kernel\Container
     */
    public function provideBusinessLayerDependencies(Container $container)
    {
        $container = parent::provideBusinessLayerDependencies($container);

        $container->extend(static::MAIL_TYPE_COLLECTION, function (MailTypeCollectionAddInterface $mailCollection) {
            $mailCollection->add(new GiftCardDeliveryMailTypePlugin());

            return $mailCollection;
        });

        return $container;
    }
}

<?php

namespace Pyz\Zed\Shipment;

use Spryker\Zed\GiftCard\Communication\Plugin\OnlyGiftCardShipmentMethodFilterPlugin;
use Spryker\Zed\Kernel\Container;
use Spryker\Zed\Shipment\ShipmentDependencyProvider as SprykerShipmentDependencyProvider;

class ShipmentDependencyProvider extends SprykerShipmentDependencyProvider
{
    /**
     * @param \Spryker\Zed\Kernel\Container $container
     *
     * @return \Spryker\Zed\Shipment\Dependency\Plugin\ShipmentMethodFilterPluginInterface[]
     */
    protected function getMethodFilterPlugins(Container $container)
    {
        return [
            new OnlyGiftCardShipmentMethodFilterPlugin(),
        ];
    }
}

<?php

namespace Pyz\Client\CartCode;

use Spryker\Client\CartCode\CartCodeDependencyProvider as SprykerCartCodeDependencyProvider;
use Spryker\Client\GiftCard\Plugin\CartCode\GiftCardCartCodePlugin;

class CartCodeDependencyProvider extends SprykerCartCodeDependencyProvider
{
    /**
     * @return \Spryker\Client\CartCodeExtension\Dependency\Plugin\CartCodePluginInterface[]
     */
    protected function getCartCodePluginCollection(): array
    {
        return [
            new GiftCardCartCodePlugin(),
        ];
    }
}

<?php

namespace Pyz\Zed\Checkout;

use Spryker\Zed\Checkout\CheckoutDependencyProvider as SprykerCheckoutDependencyProvider;
use Spryker\Zed\GiftCardMailConnector\Communication\Plugin\Checkout\SendEmailToGiftCardUser;
use Spryker\Zed\Kernel\Container;

class CheckoutDependencyProvider extends SprykerCheckoutDependencyProvider
{
    ...

    /**
     * @param \Spryker\Zed\Kernel\Container $container
     *
     * @return \Spryker\Zed\Checkout\Dependency\Plugin\CheckoutPostSaveHookInterface[]
     */
    protected function getCheckoutPostHooks(Container $container)
    {
        return [
            ...
            new SendEmailToGiftCardUser(),
        ];
    }
}

<?php

namespace Pyz\Zed\Mail;
se Spryker\Zed\GiftCardMailConnector\Communication\Plugin\Mail\GiftCardUsageMailTypePlugin;
use Spryker\Zed\Kernel\Container;
use Spryker\Zed\Mail\Business\Model\Mail\MailTypeCollectionAddInterface;
use Spryker\Zed\Mail\MailDependencyProvider as SprykerMailDependencyProvider;

class MailDependencyProvider extends SprykerMailDependencyProvider
{
    /**
     * @param \Spryker\Zed\Kernel\Container $container
     *
     * @return \Spryker\Zed\Kernel\Container
     */
    public function provideBusinessLayerDependencies(Container $container)
    {
        $container = parent::provideBusinessLayerDependencies($container);

        $container->extend(static::MAIL_TYPE_COLLECTION, function (MailTypeCollectionAddInterface $mailCollection) {
            $mailCollection->add(new GiftCardUsageMailTypePlugin());

            return $mailCollection;
        });

        return $container;
    }
}

<?php

namespace Pyz\Zed\Payment;

use Spryker\Zed\GiftCard\Communication\Plugin\GiftCardPaymentMethodFilterPlugin;
use Spryker\Zed\Kernel\Container;
use Spryker\Zed\Nopayment\Communication\Plugin\Payment\PriceToPayPaymentMethodFilterPlugin;
use Spryker\Zed\Payment\PaymentDependencyProvider as SprykerPaymentDependencyProvider;

class PaymentDependencyProvider extends SprykerPaymentDependencyProvider
{
    /**
     * @return \Spryker\Zed\Payment\Dependency\Plugin\Payment\PaymentMethodFilterPluginInterface[]
     */
    protected function getPaymentMethodFilterPlugins()
    {
        return [
            new PriceToPayPaymentMethodFilterPlugin(),
            new GiftCardPaymentMethodFilterPlugin(),
        ];
    }
}

<?php

namespace Pyz\Zed\SalesPayment;

use Spryker\Zed\GiftCard\Communication\Plugin\SalesPayment\GiftCardPaymentMapKeyBuilderStrategyPlugin;
use Spryker\Zed\SalesPayment\SalesPaymentDependencyProvider as SprykerSalesPaymentDependencyProvider;

class SalesPaymentDependencyProvider extends SprykerSalesPaymentDependencyProvider
{
    /**
     * @return array<\Spryker\Zed\SalesPaymentExtension\Dependency\Plugin\PaymentMapKeyBuilderStrategyPluginInterface>
     */
    protected function getPaymentMapKeyBuilderStrategyPlugins(): array
    {
        return [
            new GiftCardPaymentMapKeyBuilderStrategyPlugin(),
        ];
    }
}

<?php

use Spryker\Shared\Kernel\KernelConstants;
use Spryker\Shared\Nopayment\NopaymentConfig;

// ---------- Dependency injector
$config[KernelConstants::DEPENDENCY_INJECTOR_YVES] = [
    'CheckoutPage' => [
        NopaymentConfig::PAYMENT_PROVIDER_NAME,
    ],
];

<?php

namespace Pyz\Yves\Router;

use Spryker\Yves\Router\RouterDependencyProvider as SprykerRouterDependencyProvider;
use SprykerShop\Yves\CartCodeWidget\Plugin\Router\CartCodeWidgetRouteProviderPlugin;

class RouterDependencyProvider extends SprykerRouterDependencyProvider
{
    /**
     * @return \Spryker\Yves\RouterExtension\Dependency\Plugin\RouteProviderPluginInterface[]
     */
    protected function getRouteProvider(): array
    {
        return [
            new CartCodeWidgetRouteProviderPlugin(),
            new CartCodeAsyncWidgetRouteProviderPlugin(),
        ];
    }
}

<?php

namespace Pyz\Yves\ShopApplication;

use SprykerShop\Yves\CartCodeWidget\Widget\CartCodeFormWidget;
use SprykerShop\Yves\ShopApplication\ShopApplicationDependencyProvider as SprykerShopApplicationDependencyProvider;

class ShopApplicationDependencyProvider extends SprykerShopApplicationDependencyProvider
{
    /**
     * @return string[]
     */
    protected function getGlobalWidgets(): array
    {
        return [
            CartCodeFormWidget::class,
        ];
    }
}