from itemadapter import ItemAdapter
from scrapy.spidermiddlewares.base import BaseSpiderMiddleware


class CatalogSpiderMiddleware(BaseSpiderMiddleware):
    def get_processed_item(self, item, response):
        adapter = ItemAdapter(item)
        adapter["source_url"] = response.url if response else None
        adapter["processed_by_spider_middleware"] = True
        return item