Extension Guide

General

The Pricing Engine is designed to be highly flexible and extendable. So based on this purpose you have only to do three steps do create your own condition:

• extends the CustomerContext
• decorate the ContextFactory
• create your own Condition and register it in the dependency injection container

In the following example we will add a condition with is based on the firstname of the logged in customer.

Extending

First we have to extend the CustomerContext:

<?php declare(strict_types=1);

namespace SwagCustomCondition\Source;

use SwagEnterprisePricingEngine\Source\Common\CustomerContextInterface;

class CustomerContextExtended implements CustomerContextInterface
{
    /**
     * @var CustomerContextInterface
     */
    private $originalCustomerContext;

    public function __construct(CustomerContextInterface $originalCustomerContext)
    {
        $this->originalCustomerContext = $originalCustomerContext;
    }

    public function getCustomerId(): int
    {
        return $this->originalCustomerContext->getCustomerId();
    }
    // and so on to implement the original interface 

    // our own condition method to provide the firstname
    public function getCustomerFirstName(): string
    {
        $userData = Shopware()->Modules()->Admin()->sGetUserData();

        return $userData['billingaddress']['firstname'] ?? '';
    }    
}

After that we will decorate the ContextFactory to return our new CustomerContextExtended

<?php declare(strict_types=1);

namespace SwagCustomCondition\Source;

use Doctrine\DBAL\Connection;
use Shopware\B2B\StoreFrontAuthentication\Framework\AuthenticationService;
use Shopware\B2B\StoreFrontAuthentication\Framework\NotAuthenticatedException;
use Shopware\Bundle\StoreFrontBundle\Service\ContextServiceInterface;
use SwagEnterprisePricingEngine\Bridge\PricingEngineContextFactory;
use SwagEnterprisePricingEngine\Source\Common\CustomerContextInterface;
use SwagEnterprisePricingEngine\Source\PriceListCondition\PriceListConditionFactory;

class PricingEngineContextFactoryDecorated extends PricingEngineContextFactory
{
    /**
     * @param ContextServiceInterface $contextService
     * @param PriceListConditionFactory $conditionFactory
     * @param Connection $connection
     */
    public function __construct(
        ContextServiceInterface $contextService,
        PriceListConditionFactory $conditionFactory,
        Connection $connection,
        AuthenticationService $authenticationService = null
    ) {
        parent::__construct($contextService, $conditionFactory, $connection, $authenticationService);
    }

    /**
     * @return CustomerContextInterface
     */
    public function getCustomerContext(): CustomerContextInterface
    {
        return new CustomerContextExtended(parent::getCustomerContext());
    }
}

Now we will create our own condition for the Pricing Engine. To activate the condition it needs the tag swag_enterprise_pricing_engine.price_list_condition in the service.xml!

<?php declare(strict_types=1);

namespace SwagCustomCondition\Source;

use Shopware\Bundle\StoreFrontBundle\Struct\ShopContextInterface;
use SwagEnterprisePricingEngine\Source\Common\CustomerContextInterface;
use SwagEnterprisePricingEngine\Source\PriceListCondition\Conditions\AbstractCondition;

class CustomerFirstNameCondition extends AbstractCondition
{
    const NAME = 'CustomerFirstNameCondition';

    /**
     * @var string
     */
    private $firstName;

    public function __construct(string $firstName = null)
    {
        $this->firstName = $firstName;
    }

    /**
     * {@inheritdoc}
     */
    public function checkValidity(ShopContextInterface $shopContext, CustomerContextInterface $customerContext): bool
    {
        return $customerContext->getCustomerFirstName() === $this->firstName;
    }
}

At least we have to register our components in the dependency injection container:

<?xml version="1.0" ?>
<container xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns="http://symfony.com/schema/dic/services"
           xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">
    <services>
        <service class="SwagCustomCondition\Source\PricingEngineContextFactoryDecorated"
                 id="swag_custom_condition.source.pricing_engine_context_factory_decorated"
                 decorates="swag_enterprise_pricing_engine.bridge.pricing_engine_context_factory"
                 public="false">
            <argument id="shopware_storefront.context_service" type="service"/>
            <argument id="swag_enterprise_pricing_engine.source.price_list_condition.price_list_condition_factory"
                      type="service"/>
            <argument id="dbal_connection" type="service"/>
            <argument id="b2b_front_auth.authentication_service" type="service" on-invalid="null"/>
        </service>

        <service class="SwagCustomCondition\Source\CustomerFirstNameCondition"
                 id="swag_custom_condition.source.customer_first_name_condition">
            <tag name="swag_enterprise_pricing_engine.price_list_condition"/>
        </service>
    </services>
</container>

Conclusion

To add a own condition is quite simple. If you need the whole plugin, please have a look into our example-plugins directory.