refactor(contacts-service): added local name for a contact

Within this commit local name for a contact is added to `ContactsDto` which will
be used across the app.
- backend part for changing contact's username is added
- new signal under `SIGNAL_CONTACT_UPDATED` is introduced for the contacts service
- `saveContact` method of the contacts service updated so it saves contact
for a real now
- in order to be consistent across the app `userNameOrAlias` method is updated
so it includes locally set username for a contact

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

@@ -79,6 +79,18 @@ method init*[T](self: Controller[T]) =
     var args = ContactNicknameUpdatedArgs(e)
     self.delegate.contactNicknameChanged(args.contactId, args.nickname)
 
+  self.events.on(SIGNAL_CONTACT_UPDATED) do(e: Args):
+    # I left this as part it was.
+    let contacts = self.getContacts()
+    self.delegate.setContactList(contacts)
+
+    # Since we have the exact contact which has been updated, then we need to improve the way of updating the view
+    # and instead setting the whole list for every change we should update only the appropriate item in the view.
+    # Example:
+    # let args = ContactUpdatedArgs(e)
+    # let contactDto = self.contactsService.getContactById(args.id)
+    # self.delegate.onContactUpdated(contactDto)
+
 method getContacts*[T](self: Controller[T]): seq[ContactsDto] =
   return self.contactsService.getContacts()
 

src/app/modules/main/profile_section/contacts/controller_interface.nim

@@ -36,7 +36,7 @@ method blockContact*(self: AccessInterface, publicKey: string): void {.base.} =
 method removeContact*(self: AccessInterface, publicKey: string): void {.base.} =
   raise newException(ValueError, "No implementation available")
 
-method changeContactNickname*(self: AccessInterface, publicKey: string, nicknameToSet: string): void {.base.} =
+method changeContactNickname*(self: AccessInterface, publicKey: string, nickname: string) {.base.} =
   raise newException(ValueError, "No implementation available")
 
 method lookupContact*(self: AccessInterface, value: string): void {.base.} =

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

@@ -95,8 +95,8 @@ method blockContact*[T](self: Module[T], publicKey: string) =
 method removeContact*[T](self: Module[T], publicKey: string) =
   self.controller.removeContact(publicKey)
 
-method changeContactNickname*[T](self: Module[T], publicKey: string, nicknameToSet: string): void =
-  self.controller.changeContactNickname(publicKey, nicknameToSet)
+method changeContactNickname*[T](self: Module[T], publicKey: string, nickname: string) =
+  self.controller.changeContactNickname(publicKey, nickname)
 
 method lookupContact*[T](self: Module[T], value: string) =
   self.controller.lookupContact(value)

src/app_service/service/contacts/service.nim

@@ -26,6 +26,9 @@ type
   ContactAddedArgs* = ref object of Args
     contact*: ContactsDto
 
+  ContactUpdatedArgs* = ref object of Args
+    id*: string
+
 # Signals which may be emitted by this service:
 const SIGNAL_CONTACT_LOOKED_UP* = "SIGNAL_CONTACT_LOOKED_UP"
 # Remove new when old code is removed