Simple product Database

Flutter and Firebase app that uses phone camera to scan barcode to lookup product in database. Should contain following pages: 0 - Login with Facebook/Google 1 - Scan barcode page 2 - List products with matching barcodes 3 - Add new product 4 - View existing product Product fields: 1 - Barcode (array of string) 2 - Description 3 - Price (array of GPS location, Price and user id) - If product exists - - if count is > 1 - - - Show list of products - - - - User can click to go to product details - - - - If correct product doesn't exist, user can add new product - - else - - - Show product details - - - If it's not the correct product, user can add new product - else - - Show "Product not found. Add product?" - - - User can then add new product All source files need to be provided.