revert fix config login page (accounts registration states are not enough specific to use them as indicator of existing accounts)

Linphone/core/App.cpp

@@ -486,7 +486,10 @@ void App::initCore() {
 			    mEngine->setObjectOwnership(settings.get(), QQmlEngine::CppOwnership);
 			    mEngine->setObjectOwnership(this, QQmlEngine::CppOwnership);
 			    if (!mAccountList) setAccountList(AccountList::create());
-			    else mAccountList->lUpdate();
+				else {
+					mAccountList->setInitialized(false);
+					mAccountList->lUpdate(true);
+				}
 			    if (!mCallList) setCallList(CallList::create());
 			    else mCallList->lUpdate();
 			    if (!mSettings) {

Linphone/core/account/AccountList.cpp

@@ -64,27 +64,8 @@ void AccountList::setSelf(QSharedPointer<AccountList> me) {
 			}
 			mModelConnection->invokeToCore([this, accounts, defaultAccountCore, isInitialization]() {
 				mustBeInMainThread(getClassName());
-				auto reallyHaveAccount = [this]() -> bool {
-					// When an account is trying to connect, we don't want to display the features
-					// provided for the accounts that really stays in the account list
-					// (for example the back button to return on the main page in the login page)
-					for (auto &account : getSharedList<AccountCore>()) {
-						if (account->getRegistrationState() != LinphoneEnums::RegistrationState::Progress &&
-						    account->getRegistrationState() != LinphoneEnums::RegistrationState::None) {
-							return true;
-						}
-					}
-					return false;
-				};
-				for (auto &account : getSharedList<AccountCore>()) {
-					disconnect(account.get(), &AccountCore::registrationStateChanged, this, nullptr);
-				}
 				resetData<AccountCore>(*accounts);
-				for (auto &account : getSharedList<AccountCore>()) {
-					connect(account.get(), &AccountCore::registrationStateChanged, this,
-					        [this, reallyHaveAccount] { setHaveAccount(reallyHaveAccount()); });
-				}
-				setHaveAccount(reallyHaveAccount());
+				setHaveAccount(accounts->size() > 0);
 				setDefaultAccount(defaultAccountCore);
 				if (isInitialization) setInitialized(true);
 				delete accounts;

Linphone/model/account/AccountManager.cpp

@@ -143,6 +143,7 @@ bool AccountManager::login(QString username,
 	auto status = core->addAccount(account);
 	if (status == -1) {
 		*errorMessage = tr("Impossible d'ajouter le compte.");
+		core->removeAuthInfo(authInfo);
 		return false;
 	}
 	return true;

Linphone/view/Page/Window/Main/MainWindow.qml

@@ -90,7 +90,7 @@ AbstractWindow {
 	Connections {
 		target: SettingsCpp
 		function onAssistantGoDirectlyToThirdPartySipAccountLoginChanged() {
-			initStackViewItem()
+            initStackViewItem()
 		}
 		function onIsSavedChanged() {
 			if (SettingsCpp.isSaved) UtilsCpp.showInformationPopup(qsTr("Succès"), qsTr("Les changements ont été sauvegardés"), true, mainWindow)
@@ -112,13 +112,10 @@ AbstractWindow {
 		active: AppCpp.coreStarted
 		sourceComponent: AccountProxy {
 			sourceModel: AppCpp.accounts
-			onInitializedChanged: if (isInitialized) {
+            onInitializedChanged: if (isInitialized) {
 				mainWindow.accountProxy = this
 				mainWindow.initStackViewItem()
-			}
-			onHaveAccountChanged: {
-				if (isInitialized) mainWindow.initStackViewItem()
-			}
+            }
 		}
 	}
 
@@ -161,7 +158,7 @@ AbstractWindow {
 			onGoBack: openMainPage()
 			onUseSIPButtonClicked: mainWindowStackView.push(sipLoginPage)
 			onGoToRegister: mainWindowStackView.replace(registerPage)
-			showBackButton: accountProxy?.haveAccount
+            showBackButton: mainWindow.accountProxy?.haveAccount || false
 		}
 	}
 	Component {
@@ -175,7 +172,7 @@ AbstractWindow {
 					mainWindowStackView.pop()
 			}
 			onGoToRegister: mainWindowStackView.replace(registerPage)
-			showBackButton: !SettingsCpp.assistantGoDirectlyToThirdPartySipAccountLogin || accountProxy?.haveAccount
+            showBackButton: !SettingsCpp.assistantGoDirectlyToThirdPartySipAccountLogin || mainWindow.accountProxy?.haveAccount
 		}
 	}
 	Component {