fix(@desktop/sync): settings/mnemonic sync&backup handling

Part of #10389 issue.

src/app/modules/main/controller.nim

@@ -290,7 +290,7 @@ proc init*(self: Controller) =
     var args = TrustArgs(e)
     self.delegate.contactUpdated(args.publicKey)
 
-  self.events.on(SIGNAL_MNEMONIC_REMOVAL) do(e: Args):
+  self.events.on(SIGNAL_MNEMONIC_REMOVED) do(e: Args):
     self.delegate.mnemonicBackedUp()
 
   self.events.on(SIGNAL_MAKE_SECTION_CHAT_ACTIVE) do(e: Args):

src/app/modules/main/profile_section/privacy/controller.nim

@@ -63,8 +63,8 @@ proc init*(self: Controller) =
       return
     self.delegate.onUserAuthenticated(args.pin, args.password, args.keyUid)
 
-  self.events.on(SIGNAL_MNEMONIC_REMOVAL) do(e: Args):
-    self.delegate.onMnemonicUpdated()
+  self.events.on(SIGNAL_MNEMONIC_REMOVED) do(e: Args):
+    self.delegate.mnemonicBackedUp()
 
   self.events.on(SIGNAL_PASSWORD_CHANGED) do(e: Args):
     var args = OperationSuccessArgs(e)

src/app/modules/main/profile_section/privacy/io_interface.nim

@@ -41,7 +41,7 @@ method getMnemonicWordAtIndex*(self: AccessInterface, index: int): string {.base
   raise newException(ValueError, "No implementation available")
 
 # Controller Delegate Interface
-method onMnemonicUpdated*(self: AccessInterface) {.base.} =
+method mnemonicBackedUp*(self: AccessInterface) {.base.} =
   raise newException(ValueError, "No implementation available")
 
 method onPasswordChanged*(self: AccessInterface, success: bool, errorMsg: string) {.base.} =

src/app/modules/main/profile_section/privacy/module.nim

@@ -66,7 +66,7 @@ method changePassword*(self: Module, password: string, newPassword: string) =
 method isMnemonicBackedUp*(self: Module): bool =
   return self.controller.isMnemonicBackedUp()
 
-method onMnemonicUpdated*(self: Module) =
+method mnemonicBackedUp*(self: Module) =
   self.view.emitMnemonicBackedUpSignal()
 
 method onPasswordChanged*(self: Module, success: bool, errorMsg: string) =

src/app_service/service/privacy/service.nim

@@ -13,7 +13,6 @@ logScope:
   topics = "privacy-service"
 
 # Signals which may be emitted by this service:
-const SIGNAL_MNEMONIC_REMOVAL* = "menmonicRemoval"
 const SIGNAL_PASSWORD_CHANGED* = "passwordChanged"
 
 type
@@ -116,8 +115,6 @@ QtObject:
       data.success = false
       error "error: ", procName="removeMnemonic", errDesription = "an error occurred removing mnemonic"
 
-    self.events.emit(SIGNAL_MNEMONIC_REMOVAL, data)
-
   proc getMnemonicWordAtIndex*(self: Service, index: int): string =
     let mnemonic = self.settingsService.getMnemonic()
     if(mnemonic.len == 0):

src/app_service/service/settings/service.nim

@@ -24,6 +24,7 @@ const DEFAULT_FLEET* = $Fleet.StatusProd
 const SIGNAL_CURRENCY_UPDATED* = "currencyUpdated"
 const SIGNAL_DISPLAY_NAME_UPDATED* = "displayNameUpdated"
 const SIGNAL_BIO_UPDATED* = "bioUpdated"
+const SIGNAL_MNEMONIC_REMOVED* = "mnemonicRemoved"
 const SIGNAL_CURRENT_USER_STATUS_UPDATED* = "currentUserStatusUpdated"
 
 logScope:
@@ -98,6 +99,9 @@ QtObject:
           if settingsField.name == KEY_BIO:
             self.settings.bio = settingsField.value
             self.events.emit(SIGNAL_BIO_UPDATED, SettingsTextValueArgs(value: settingsField.value))
+          if settingsField.name == KEY_MNEMONIC:
+            self.settings.mnemonic = ""
+            self.events.emit(SIGNAL_MNEMONIC_REMOVED, Args())
 
     self.initialized = true
 
@@ -236,6 +240,7 @@ QtObject:
   proc saveMnemonic*(self: Service, value: string): bool =
     if(self.saveSetting(KEY_MNEMONIC, value)):
       self.settings.mnemonic = value
+      self.events.emit(SIGNAL_MNEMONIC_REMOVED, Args())
       return true
     return false