Create E-Commerce widget

The goal is to build a service/website which enables a user (publisher) to select multiple products (from csv-/xml-file or online shop) through a web interface. This selection will be saved as a wishlist. ! Attention: We do NOT own the online store. Further we do NOT have access to its servers or an API! The user (publisher) will be able to generate a unique link for each wishlist. This link can be shared via email or any other media. It must be possible that multiple links can exist at the same time. By generating a new link older ones still need to stay valid. When a user (consumer) clicks on such a link, the user (consumer) will be presented with the shopping cart of the external online store. This shopping cart is already pre-filled with the products of the respective wishlist (link). The person can then perform a regular checkout (purchase) at the online store. _______________________ Additional information: Please find further details in the PDF attached. The wireframe/mockup shows the journey of the publisher and the consumer. _______________________ Use-case: A blogger (publisher) posts food recipes on his/her blog. In order to enhance the online shopping experience, visitors (consumers) of this blog should to be able to purchase the entire recipe at once. Example: There is one recipe that consists of 5 ingredients. The blogger (publisher) generates a wishlist consisting of these 5 ingredients (products). Instead of posting 5 links (deeplinks) to every individual ingredient, the blogger posts a single link, which opens the shopping cart filled with the 5 ingredients already placed inside. _______________________ If you have any questions, please contact us for further information. Thank you