Database Model Event and Observer

[kylevorster]

Hey, I'm new to Magento programming and hope someone could assist with the below.

I'm busy making a module that will talk to a remote service and I need to save the ID of the remote service to the local database so I can link the local customer with a remote customer. So my question is, is there a easier, cleaner way to do this. 

I have this so far, I removed some of the naming etc just for this post.

# app/code/Vendor/Package/Setup/InstallSchema.php

$table = $setup->getConnection()->newTable($setup->getTable('vendor_package_customers'));

$table->addColumn( 'customer_id', Table::TYPE_INTEGER, null, ['unsigned' => true], 'Customer Id');
$table->addColumn( 'remote_id', Table::TYPE_INTEGER, null, ['unsigned' => true], 'Remote Id' );

$table->addIndex($setup->getIdxName('synergicode_sageone_customers', ['customer_id']), ['mage_id']);
$table->addIndex($setup->getIdxName('synergicode_sageone_customers', ['remote_id']), ['sage_id']);

$table->addForeignKey(
$setup->getFkName('synergicode_sageone_customers', 'customer_id', 'customer_entity', 'entity_id'),
 'customer_id', $setup->getTable('customer_entity'), 'entity_id',
 Table::ACTION_SET_NULL
);

# app/code/Vendor/Package/etc/events.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../lib/internal/Magento/Framework/Event/etc/events.xsd">
    <event name="adminhtml_customer_save_after">
        <observer name="vendor_package_customer_save" instance="Vendor\Package\Observer\Customer\Save" />
    </event>
</config>

# app/code/Vendor/Package/Observer/Customer.php

class Save implements ObserverInterface {

    protected $_logger, $_customer_factory;

    function __construct(\Psr\Log\LoggerInterface $logger, \Vendor\Package\Model\CustomerFactory $customerFactory) 
    {
        $this->_logger = $logger;
        $this->_customer_factory = $customerFactory;
    }

    public function execute(Observer $observer) 
    {
        $customer = $observer->getCustomer();

        /*
            Check if the customer object exists
        
            TODO
        */

        $_remote_customer = $this->_customer_factory->create()->load($customer->getId());
        
        /*
            Is there a way to call getByCustomer ?
        */
        
        $remote_id = $_remote_customer->getRemoteId();
        
        /*
            Then for inserting a new recording, is there a way to link to the customer object without me having to pass it
        */
        
        $_db_customer = $this->_customer_factory->create();
        
        $_db_customer->setCustomerId($customer->getId());
        $_db_customer->setRemoteId('1234');
                
        $_db_customer->save();
    }
}

# app/code/Vendor/Package/Model/Customer.php

class Customer extends \Magento\Framework\Model\AbstractModel
{
    /**
    * Initialize resource model
    * @return void
    */
    protected function _construct()
    {
        $this->_init('Vendor\Package\Model\ResourceModel\Customer');
    }

    /*
        Should I add methods here so I can access certain stuff in the object ?
    */
}

# app/code/Vendor/Package/Model/ResourceModel/Customer.php

<?php
    
class Customer extends \Magento\Framework\Model\ResourceModel\Db\AbstractDb
{

    /**
    * Initialize resource model
    * Get table name from config
    *
    * @return void
    */
    protected function _construct()
    {
        $this->_init('vendor_package_customers', 'customer_id');
        
        $this->_isPkAutoIncrement = false;
    }

}

# app/local/Vendor/Package/Model/ResourceModel/Customer/Collection.php

class Collection extends \Magento\Framework\Model\ResourceModel\Db\Collection\AbstractCollection
{
    /**
    * Constructor
    * Configures collection
    *
    * @return void
    */
    protected function _construct()
    {
        $this->_init('Vendor\Package\Model\Customer', 'Vendor\Package\Model\ResourceModel\Customer');
    }
}

I hope my question make sense and that someone is willing to assist.