EC463_SW1

Usage:

To run on IOS:

• npm i

For Intel Macs:

• cd ios/ && pod install && cd .. For M1 Macs:
• cd ios/ && arch -x86_64 pod install && cd ..

Then:

• npx react-native run-ios

Design:

Front End:

• Initial login screen (using Google authentication) provides context to store data associated to user
• After login, access to scanner screen is allowed
• Once barcode is detected it's value is passed along to the "backend" processing

Back End:

• Once barcode string is passed, first it is placed into a query object
• The query object is posted to the Food Data Central (FDC) API
• This query returns an array of possible matches, the first element being the relevant item
• This food item is taken, its foodNutrients array elements searched for calories and macronutrients
• This data is then stored in an object
• This object is then stored in a collection named the uID, in a document named after the current Date

Testing:

Login:

• Initial testing was for the Google Firebase login
• Consisted of making sure our Google accounts could login then the uid identified

Barcode Scanner:

• First the application was loaded onto an iPhone for testing
• Then a barcode was placed into view of the camera
• An alert was then thrown up with the barcode string as data

API communication:

• First a test barcode was decided upon (Welch's Fruit Snacks)
• This barcode string was then loaded into the query object (attached to button press)
• On completion of this query its result was then sent to the Firebase DB attached to the tester's uID

Images/Videos:

Example Barcode Scanner Screen

Example Profile Screen