Structural modifications to Prestashop with Agile Multiseller Module

PLEASE READ THROUGHLY AS THIS IS NOT A BEGINNER JOB. YOU MUST KNOW PRESTAHOP AND CODING VERY WELL BEFORE BIDDING. WE RESPECTED YOU AND WROTE A DESCRIPTION, PLEASE READ IT. Our company will have a different food delivery model. We need structural changes required to our Prestashop multiseller (Agile) store without affecting the core modules or ability to updates. 1) While sellers will create their meals as usual (e.g. 30 meals), as an additional functionality, they should be able map meals to days as menu of the day (e.g. 5 meals) for next X days. They should also be able to copy menus from day to day. 2) Sellers will serve certain ZIP code which customer will enter at main page (should be set with cookie along with option to change. Other sellers’ products will be irrelevant in all product displays and should be hidden (new products, featured product etc) during session. During checkout, ZIP code should be checked with delivery address again. 3) We should be able create our contracted customers (like schools) address with an alphanumerical code We will be accepting 3 types of orders for our marketplace sellers. All orders should have a different shipment method. Freelancer will create a module for home page which will have nice looking tabs for customer to select the order type along with certain information and code entry field: 1) Daily Menu: Customer will enter ZIP code, and in next page, daily meals for every day created by all sellers serving that ZIP code for next X days (X configurable) will be displayed. Each meal will display product details as mouse over pop-up. Customer will add to his cart in increments of 0,5 portions (with – and + buttons) with ajax and order. Different shipping module should affect this order type. For every day and for every seller, X$ delivery charge will apply with an option to have free delivery > X$. The date of the meal carried to cart and order information. If ZIP code doesn’t match any seller, user will be forwarded to a google form 2) Contracted customers: If this tab is selected, 3 digit alpha numerical code should be entered matching the contract number (e.g. EPR). This code can be treated as ZIP, sellers serving this contract (EPR) will be listed as similar to 1). Different shipping module should affect this order type. If ZIP code doesn’t match any seller, error will be displayed. 3) Catering: If this tab is selected, customer will enter the ZIP code and see all meals served by sellers to that area, categorized by sellers. There should be an option for minimum order per seller. Different shipping module should affect this order type or free of charge pickup. This ordering option should have a calendar and time slots for delivery time. If ZIP code doesn’t match any seller, user will be forwarded to a google form. We have responsive template installed, all displays should also be proper in phones and tablets after completion. Changes to the code should be documented. 1) all changed files should be listed in this project in to Word document. i) modified files and DB entries ii) description of changes made 2) changes in code should be commented out, codes should not be removed, but commented out