fix: Background image upload (#2433)

* work manager used for bg schedule

* removed swith case

* remove unwanted contrains and randomize the taskid
as image.others might fail

* added translations

* new product image upload working

* removed debug for work manager

* delete photo when uploaded

* use await keywords while initializing

* refactor the code

* fix show image after queed

* serialize and deserialze input data seperately

* add an instant product in the loacl db to
let the user not confuse

* added smooth random class

* use smooth random to generate 8 digits

* remove unneccesary await

* update the local db with a product if not yet
uploaded

* update local databse after sucessful
update into server

* don't refresh automatically after upload queed

* supply language code to work manager

* import app localizations

* small refactoring

* refactor the code for work manager

* iOS Config for WorkManager

* formatting

* suggestion by tolemon

Co-authored-by: Pierre Slamich <pierre.slamich@gmail.com>

* suggestion by tolemon

Co-authored-by: Pierre Slamich <pierre.slamich@gmail.com>

* suggestion by tolemon

Co-authored-by: Pierre Slamich <pierre.slamich@gmail.com>

* small fix

* add swith case to the workmanager

* efficient switch case

* Update packages/smooth_app/lib/l10n/app_en.arb

Suggested by tolemon

Co-authored-by: Pierre Slamich <pierre.slamich@gmail.com>

* minor fix

* Basic Input details add are now run in background

* basic details are now updated immediatly
even without internet

* nutrient edit task are now background
and also conflict when recheduling task is managed

* menu screen for background tasks and
nutrition edits are now backgrounded

* button for retry now works in the bg tasks screen

* formatting

* genaralised function for non image tasks

* should retry set default to false

* better mechanism for retries and refactor

* refactor and consts duration of 3s for snackbars

* now language country and user are properly dropped

* Update packages/smooth_app/ios/Runner/Info.plist

* Update packages/smooth_app/ios/Runner/AppDelegate.swift

* Error messages fixed

* custom workmanager dependencies added

* migrated basic detail task from work manager to
taskmanager

* chanages to do the product edit changes in bg

* dart format

* cleaned the function calls when doing bg task

* dao_task edited

* unnecessary methods removed

* use int as id instead of string

* added comments and made fields final

* used const variable instead of hardcoded ones

* get pending tasks from taskManager class

* refactor

* handled exceptions

* string instead of int

* remove unused plugin

* removed unnessary files

* update to localdatabase working without islotes

* suggestions left as comments on PR

* deleted unncessary Random class

* doc added

* Remove WorkManager iOS code

* reset publock

* reset publock

* remove harcoded color

* used duration constant class instead of harcoded

* make methods to generate taskId

* dart frmt

* changes as per the code review

* string buffer , var documentation and rename

* error fix

* refactor and spelling corrections

* /// instead of //

* dart ff formater

* more refactorings

* Update background_task_helper.dart

* dart ff fix

Co-authored-by: monsieurtanuki <fabrice_fontaine@hotmail.com>
Co-authored-by: Edouard Marquez <g123k@users.noreply.github.com>
Co-authored-by: Pierre Slamich <pierre.slamich@gmail.com>
Co-authored-by: Pierre Slamich <pierre@openfoodfacts.org>

packages/smooth_app/lib/main.dart

@@ -18,6 +18,7 @@ import 'package:smooth_app/data_models/user_preferences.dart';
 import 'package:smooth_app/database/dao_string.dart';
 import 'package:smooth_app/database/local_database.dart';
 import 'package:smooth_app/helpers/analytics_helper.dart';
+import 'package:smooth_app/helpers/background_task_helper.dart';
 import 'package:smooth_app/helpers/camera_helper.dart';
 import 'package:smooth_app/helpers/data_importer/smooth_app_data_importer.dart';
 import 'package:smooth_app/helpers/network_config.dart';
@@ -41,7 +42,6 @@ Future<void> main({final bool screenshots = false}) async {
   final WidgetsBinding widgetsBinding =
       WidgetsFlutterBinding.ensureInitialized();
   FlutterNativeSplash.preserve(widgetsBinding: widgetsBinding);
-
   if (kReleaseMode) {
     await AnalyticsHelper.initSentry(
       appRunner: () => runApp(const SmoothApp()),
@@ -99,6 +99,7 @@ Future<bool> _init1() async {
     ),
     daoString: DaoString(_localDatabase),
   );
+  await callbackDispatcher(_localDatabase);
 
   AnalyticsHelper.setCrashReports(_userPreferences.crashReports);
   ProductQuery.setCountry(_userPreferences.userCountryCode);