Develop 5 Scrapy spiders.

We have a Scrapy project already working on a Linux Server, extracting data from several e-commerce sites, and we need add 5 spiders more. The site names will be showed after project acceptance. Requirements: 1) The code should be integrated to a existent project. 2) The spider must store data in to a mongodb (already created). The field to store are: name description id (unique by site) price url site_name timestamp (date when the product is updated) 3) Before store an item to Db, you should verify if this same product already exist, if not, you should insert a new one, if yes you should update the existent. The way to know that is by, id and site_name. 4) One of the sites, requires signing before browse the catalog, the spider must manage this logging. The project payment will be divided in 5 hitos. We consider as the final of each one, the end of crawling of one site.