Develop an application in Telegram (Telegram Mini App)

Good afternoon.

It is necessary to develop the Telegram Mini App by analogy with the https://t.me/unicorn_go_bot?profile bot.
The application must contain the mobile version of the online store https://brandoor.store/ .
The application should provide the user with the ability to interact with the site, including full product navigation, payment, and other features described below.

It is important to implement the following components:
calculation of the cost of goods using a link from the De Wu application, bonus and referral systems, order history, and the ability to calculate the cost of the order on the product page and when placing an order.

More about the project here - https://docs.google.com/document/d/13tlfR2Om3if4GL...