Mobile based shopping cart and ordering application with complete code and clean documentation

Need Mobile shopping cart and ordering application with payment gateway integration and following features, need to have clean and complete code *Product catalogue *Product selection to cart *Order processing *Payment through CC/DC/Wallet - provide clear details like payment gateway and requirements from third party *Inventory update *Web based admin panel for configuring and managing app including roles and authorisations *Notifications *Customer Profile creation and update *Capturing customer location during order *Inventory update through API and so on