develope anroid app

We need an android app to take pictures of food items.
An automatic assignment via the EAN/GTIN code should be made.

the following has to be done:

* App should be available in playstore name "mavenja admin" (nice2have)
* After opening the app, an installation code must be entered "801102005ap"(nice2have)
* while the app is open, the smartphone should not go into sleep mode (if technically possible)(nice2have)
* push messages from other apps should be suppressed while the app is open - so only this app should be in the foreground (nice2have)

* See app design below
* the app should have access to the camera, be able to recognize and compare barcodes, take product pictures, name and save pictures.
* the app should always search for barcodes like a qr code scanner / barcode scanner - as soon as one is in front of it, it should be recognized
and be compared with https://opengtindb.org/ which product it is.
* the information is displayed on the screen (can be hidden in the settings) e.g. for product 9000159198000 is displayed
detail name. Kelly's chips classic. Will auto-hide after 3 seconds and a countdown starts from 10 seconds down that the photo series starts
* a photo is taken every 0.25 seconds. 30 photos in total.
* The file name should be generated automatically from the data obtained, eg barcode 9000159198000
for the first image the following name is generated "9000159198000_1" for the second "9000159198000_2" etc.


important is:
* the electric turntable on which the products are placed rotates slowly. the photos have to be razor-sharp - the necessary camera settings are to be set automatically by the app
* the flash / light is not to be used
* the pictures should be saved online in a nextcloud storage immediately (can be set in settings) (nice2have)


maximum budget is $ 180