Implement background sync for xmr using flutter_daemon (#2094)

* Implement background sync for xmr using flutter_daemon

* - initialize app config in background thread
- initializeAppConfigs without loading the wallet.

* - properly do awaited calls in methodChannel
- prevent locking main thread during background sync

* add back background sync debug page
fix issues caused by xmr wallet being view only (and read only)

* changes from review
improve starting of bgsync task

* update stopBackgroundSync, await listener functions, ensure that listener always start (call _start in constructor)

* DO-NOT-MERGE: extre verbose monero logs

* stop background service when app is being opened

* improve monitoring of background sync

* update flutter_daemon to ensure network constraint
prevent throwing errors on isBackgroundSyncEnabled
check network before syncing

* Update lib/main.dart

* revert Update main.dart [skip ci]

* continously run network check

* disable charging requirement,
fix status reporting of background sync in UI

* Refactor background sync logic, and add UI notifications for battery optimization. Updated flutter_daemon version modified build.gradle for signing config to allow testing in both release and debug modes.

* verbose monero only when requested in code.
Do not start background sync when battery optimization is on

* fix background sync mode not properly reflecting state changes

* drop unnecessary dependency

---------

Co-authored-by: Omar Hatem <omarh.ismail1@gmail.com>

ios/Podfile.lock

@@ -3,39 +3,10 @@ PODS:
     - Flutter
     - ReachabilitySwift
   - CryptoSwift (1.8.3)
-  - cw_haven (0.0.1):
-    - cw_haven/Boost (= 0.0.1)
-    - cw_haven/Haven (= 0.0.1)
-    - cw_haven/OpenSSL (= 0.0.1)
-    - cw_haven/Sodium (= 0.0.1)
-    - cw_shared_external
-    - Flutter
-  - cw_haven/Boost (0.0.1):
-    - cw_shared_external
-    - Flutter
-  - cw_haven/Haven (0.0.1):
-    - cw_shared_external
-    - Flutter
-  - cw_haven/OpenSSL (0.0.1):
-    - cw_shared_external
-    - Flutter
-  - cw_haven/Sodium (0.0.1):
-    - cw_shared_external
+  - cw_decred (0.0.1):
     - Flutter
   - cw_mweb (0.0.1):
     - Flutter
-  - cw_decred (0.0.1):
-  - cw_shared_external (0.0.1):
-    - cw_shared_external/Boost (= 0.0.1)
-    - cw_shared_external/OpenSSL (= 0.0.1)
-    - cw_shared_external/Sodium (= 0.0.1)
-    - Flutter
-  - cw_shared_external/Boost (0.0.1):
-    - Flutter
-  - cw_shared_external/OpenSSL (0.0.1):
-    - Flutter
-  - cw_shared_external/Sodium (0.0.1):
-    - Flutter
   - device_display_brightness (0.0.1):
     - Flutter
   - device_info_plus (0.0.1):
@@ -131,16 +102,12 @@ PODS:
     - Flutter
   - wakelock_plus (0.0.1):
     - Flutter
-  - workmanager (0.0.1):
-    - Flutter
 
 DEPENDENCIES:
   - connectivity_plus (from `.symlinks/plugins/connectivity_plus/ios`)
   - CryptoSwift
-  - cw_haven (from `.symlinks/plugins/cw_haven/ios`)
-  - cw_mweb (from `.symlinks/plugins/cw_mweb/ios`)
-  - cw_shared_external (from `.symlinks/plugins/cw_shared_external/ios`)
   - cw_decred (from `.symlinks/plugins/cw_decred/ios`)
+  - cw_mweb (from `.symlinks/plugins/cw_mweb/ios`)
   - device_display_brightness (from `.symlinks/plugins/device_display_brightness/ios`)
   - device_info_plus (from `.symlinks/plugins/device_info_plus/ios`)
   - devicelocale (from `.symlinks/plugins/devicelocale/ios`)
@@ -165,7 +132,6 @@ DEPENDENCIES:
   - universal_ble (from `.symlinks/plugins/universal_ble/darwin`)
   - url_launcher_ios (from `.symlinks/plugins/url_launcher_ios/ios`)
   - wakelock_plus (from `.symlinks/plugins/wakelock_plus/ios`)
-  - workmanager (from `.symlinks/plugins/workmanager/ios`)
 
 SPEC REPOS:
   https://github.com/CocoaPods/Specs.git:
@@ -181,14 +147,10 @@ SPEC REPOS:
 EXTERNAL SOURCES:
   connectivity_plus:
     :path: ".symlinks/plugins/connectivity_plus/ios"
-  cw_haven:
-    :path: ".symlinks/plugins/cw_haven/ios"
-  cw_mweb:
-    :path: ".symlinks/plugins/cw_mweb/ios"
-  cw_shared_external:
-    :path: ".symlinks/plugins/cw_shared_external/ios"
   cw_decred:
     :path: ".symlinks/plugins/cw_decred/ios"
+  cw_mweb:
+    :path: ".symlinks/plugins/cw_mweb/ios"
   device_display_brightness:
     :path: ".symlinks/plugins/device_display_brightness/ios"
   device_info_plus:
@@ -237,48 +199,43 @@ EXTERNAL SOURCES:
     :path: ".symlinks/plugins/url_launcher_ios/ios"
   wakelock_plus:
     :path: ".symlinks/plugins/wakelock_plus/ios"
-  workmanager:
-    :path: ".symlinks/plugins/workmanager/ios"
 
 SPEC CHECKSUMS:
-  connectivity_plus: bf0076dd84a130856aa636df1c71ccaff908fa1d
+  connectivity_plus: 481668c94744c30c53b8895afb39159d1e619bdf
   CryptoSwift: 967f37cea5a3294d9cce358f78861652155be483
-  cw_haven: b3e54e1fbe7b8e6fda57a93206bc38f8e89b898a
-  cw_mweb: 22cd01dfb8ad2d39b15332006f22046aaa8352a3
-  cw_shared_external: 2972d872b8917603478117c9957dfca611845a92
-  cw_decred: 9c0e1df74745b51a1289ec5e91fb9e24b68fa14a
-  device_display_brightness: 1510e72c567a1f6ce6ffe393dcd9afd1426034f7
-  device_info_plus: c6fb39579d0f423935b0c9ce7ee2f44b71b9fce6
-  devicelocale: 35ba84dc7f45f527c3001535d8c8d104edd5d926
+  cw_decred: a02cf30175a46971c1e2fa22c48407534541edc6
+  cw_mweb: 3aea2fb35b2bd04d8b2d21b83216f3b8fb768d85
+  device_display_brightness: 04374ebd653619292c1d996f00f42877ea19f17f
+  device_info_plus: 335f3ce08d2e174b9fdc3db3db0f4e3b1f66bd89
+  devicelocale: bd64aa714485a8afdaded0892c1e7d5b7f680cf8
   DKImagePickerController: 946cec48c7873164274ecc4624d19e3da4c1ef3c
   DKPhotoGallery: b3834fecb755ee09a593d7c9e389d8b5d6deed60
-  fast_scanner: 44c00940355a51258cd6c2085734193cd23d95bc
-  file_picker: 15fd9539e4eb735dc54bae8c0534a7a9511a03de
+  fast_scanner: 2cb1ad3e69e645e9980fb4961396ce5804caa3e3
+  file_picker: 07c75322ede1d47ec9bb4ac82b27c94d3598251a
   Flutter: e0871f40cf51350855a761d2e70bf5af5b9b5de7
-  flutter_inappwebview_ios: 6f63631e2c62a7c350263b13fa5427aedefe81d4
-  flutter_local_authentication: 1172a4dd88f6306dadce067454e2c4caf07977bb
-  flutter_mailer: 2ef5a67087bc8c6c4cefd04a178bf1ae2c94cd83
-  flutter_secure_storage: 23fc622d89d073675f2eaa109381aefbcf5a49be
-  fluttertoast: e9a18c7be5413da53898f660530c56f35edfba9c
-  in_app_review: a31b5257259646ea78e0e35fc914979b0031d011
-  integration_test: 252f60fa39af5e17c3aa9899d35d908a0721b573
+  flutter_inappwebview_ios: b89ba3482b96fb25e00c967aae065701b66e9b99
+  flutter_local_authentication: 989278c681612f1ee0e36019e149137f114b9d7f
+  flutter_mailer: 3a8cd4f36c960fb04528d5471097270c19fec1c4
+  flutter_secure_storage: 2c2ff13db9e0a5647389bff88b0ecac56e3f3418
+  fluttertoast: 76fea30fcf04176325f6864c87306927bd7d2038
+  in_app_review: 5596fe56fab799e8edb3561c03d053363ab13457
+  integration_test: 4a889634ef21a45d28d50d622cf412dc6d9f586e
   OrderedSet: e539b66b644ff081c73a262d24ad552a69be3a94
-  package_info_plus: c0502532a26c7662a62a356cebe2692ec5fe4ec4
-  path_provider_foundation: 2b6b4c569c0fb62ec74538f866245ac84301af46
-  permission_handler_apple: e76247795d700c14ea09e3a2d8855d41ee80a2e6
+  package_info_plus: af8e2ca6888548050f16fa2f1938db7b5a5df499
+  path_provider_foundation: 080d55be775b7414fd5a5ef3ac137b97b097e564
+  permission_handler_apple: 3787117e48f80715ff04a3830ca039283d6a4f29
   ReachabilitySwift: 32793e867593cfc1177f5d16491e3a197d2fccda
   SDWebImage: 8a6b7b160b4d710e2a22b6900e25301075c34cb3
-  sensitive_clipboard: d4866e5d176581536c27bb1618642ee83adca986
-  share_plus: 8b6f8b3447e494cca5317c8c3073de39b3600d1f
-  shared_preferences_foundation: fcdcbc04712aee1108ac7fda236f363274528f78
-  sp_scanner: eaa617fa827396b967116b7f1f43549ca62e9a12
+  sensitive_clipboard: 161e9abc3d56b3131309d8a321eb4690a803c16b
+  share_plus: 50da8cb520a8f0f65671c6c6a99b3617ed10a58a
+  shared_preferences_foundation: 9e1978ff2562383bd5676f64ec4e9aa8fa06a6f7
+  sp_scanner: b1bc9321690980bdb44bba7ec85d5543e716d1b5
   SwiftyGif: 706c60cf65fa2bc5ee0313beece843c8eb8194d4
   Toast: 1f5ea13423a1e6674c4abdac5be53587ae481c4e
-  uni_links: d97da20c7701486ba192624d99bffaaffcfc298a
-  universal_ble: cf52a7b3fd2e7c14d6d7262e9fdadb72ab6b88a6
-  url_launcher_ios: 5334b05cef931de560670eeae103fd3e431ac3fe
-  wakelock_plus: 373cfe59b235a6dd5837d0fb88791d2f13a90d56
-  workmanager: 0afdcf5628bbde6924c21af7836fed07b42e30e6
+  uni_links: ed8c961e47ed9ce42b6d91e1de8049e38a4b3152
+  universal_ble: ff19787898040d721109c6324472e5dd4bc86adc
+  url_launcher_ios: 694010445543906933d732453a59da0a173ae33d
+  wakelock_plus: 04623e3f525556020ebd4034310f20fe7fda8b49
 
 PODFILE CHECKSUM: e448f662d4c41f0c0b1ccbb78afd57dbf895a597
 

ios/Runner/AppDelegate.swift

@@ -1,6 +1,5 @@
 import UIKit
 import Flutter
-import workmanager
 
 @main
 @objc class AppDelegate: FlutterAppDelegate {    
@@ -12,15 +11,6 @@ import workmanager
           UNUserNotificationCenter.current().delegate = self as? UNUserNotificationCenterDelegate
         }
 
-        WorkmanagerPlugin.setPluginRegistrantCallback { registry in
-            // Registry in this case is the FlutterEngine that is created in Workmanager's
-            // performFetchWithCompletionHandler or BGAppRefreshTask.
-            // This will make other plugins available during a background operation.
-            GeneratedPluginRegistrant.register(with: registry)
-        }
-
-        WorkmanagerPlugin.registerTask(withIdentifier: "com.fotolockr.cakewallet.monero_sync_task")
-
         makeSecure()
         
         let controller : FlutterViewController = window?.rootViewController as! FlutterViewController