Stock Status OC4

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$this->load->controller('product/thumb', $product_data);

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	private $event_list = array(
		array(
			'code' => 'pprmkr_getstatus_before',
			'trigger' => 'catalog/controller/product/thumb/before',
			'description' => 'Adds product stock to product thumb',
			'action' => 'extension/pprmkr_thumbevent/module/get_status|addTekstBefore'
		),
		array(
			'code' => 'pprmkr_getstatus_after',
			'trigger' => 'catalog/controller/product/thumb/after',
			'description' => 'Adds product stock to product thumb',
			'action' => 'extension/pprmkr_thumbevent/module/get_status|addTekst'
		)
	);
	
	public function install() {
		$this->load->model('setting/event');
		
		foreach ($this->event_list as $event) {
			$this->model_setting_event->addEvent($event['code'], $event['description'], $event['trigger'], $event['action']);
		}
	}

	public function uninstall() {
		$this->load->model('setting/event');

		foreach ($this->event_list as $event) {
			$this->model_setting_event->deleteEventByCode($event['code']);
		}
	}

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	public function addTekst(string &$route, array &$args, mixed &$output): void {	
		$search = '<div class="button-group">';
		
		$position = strpos($output, $search, 0) - 13; // end of div description
		$firstPart = substr($output, 0, $position);
		$lastPart = substr($output, $position);
		
		$addedText = 'Status: ' . $args[0]['nieuweData'];
		
		$output = $firstPart . $addedText . $lastPart;

	}
	public function addTekstBefore(string &$route, array &$args): void {
		$this->load->language('product/product');
		
		foreach ($args as $key => $data) {
			$product_info = $this->model_catalog_product->getProduct($args[$key]['product_id']);

			if ($product_info) {
				if ($product_info['quantity'] <= 0) {
					$stock = $product_info['stock_status'];
				} elseif ($this->config->get('config_stock_display')) {
					$stock = $product_info['quantity'];
				} else {
					$stock = $this->language->get('text_instock');
				}
			}
			$args[$key]['nieuweData'] = $stock;
		}
	}

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foreach ($args as $key => $data) {

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$this->load->model('catalog/product');