Make login parametrized with a force_logout boolean

Instead of using a separate function to force logging out before
login, login now has a boolean parameter that instructs it to logout
before loging in again, if the user is alread logged in. It then
starts the authorization with a force browser logout first.

CURA-7427

cura/API/Account.py

@@ -90,23 +90,23 @@ class Account(QObject):
             self.loginStateChanged.emit(logged_in)
 
     @pyqtSlot()
-    def login(self) -> None:
-        if self._logged_in:
-            # Nothing to do, user already logged in.
-            return
-        self._authorization_service.startAuthorizationFlow()
-
-    @pyqtSlot()
-    def loginWithForcedLogout(self) -> None:
+    @pyqtSlot(bool)
+    def login(self, force_logout_before_login: bool = False) -> None:
         """
-        Forces a logout from Cura and then initiates the authorization flow with the force_browser_logout variable
-        as true, to sync the accounts in Cura and in the browser.
+        Initializes the login process. If the user is logged in already and force_logout_before_login is true, Cura will
+        logout from the account before initiating the authorization flow. If the user is logged in and
+        force_logout_before_login is false, the function will return, as there is nothing to do.
 
+        :param force_logout_before_login: Optional boolean parameter
         :return: None
         """
         if self._logged_in:
+            if force_logout_before_login:
                 self.logout()
-        self._authorization_service.startAuthorizationFlow(True)
+            else:
+                # Nothing to do, user already logged in.
+                return
+        self._authorization_service.startAuthorizationFlow(force_logout_before_login)
 
     @pyqtProperty(str, notify=loginStateChanged)
     def userName(self):

resources/qml/WelcomePages/AddCloudPrintersView.qml

@@ -93,7 +93,7 @@ Item
                 color: UM.Theme.getColor("text_link")
                 MouseArea {
                     anchors.fill: parent;
-                    onClicked: Cura.API.account.loginWithForcedLogout()
+                    onClicked: Cura.API.account.login(true)
                     hoverEnabled: true
                     onEntered:
                     {

tests/API/TestAccount.py

@@ -19,35 +19,23 @@ def test_login():
     account = Account(MagicMock())
     mocked_auth_service = MagicMock()
     account._authorization_service = mocked_auth_service
+    account.logout = MagicMock()
 
     account.login()
-    mocked_auth_service.startAuthorizationFlow.assert_called_once_with()
+    mocked_auth_service.startAuthorizationFlow.assert_called_once_with(False)
 
     # Fake a successful login
     account._onLoginStateChanged(True)
 
     # Attempting to log in again shouldn't change anything.
     account.login()
-    mocked_auth_service.startAuthorizationFlow.assert_called_once_with()
+    mocked_auth_service.startAuthorizationFlow.assert_called_once_with(False)
 
-
-def test_loginWithForcedLogout():
-    account = Account(MagicMock())
-    mocked_auth_service = MagicMock()
-    account._authorization_service = mocked_auth_service
-    account.logout = MagicMock()
-
-    # Fake a successful login
-    account._onLoginStateChanged(True)
-    account.loginWithForcedLogout()
-    # Make sure logout is called once
-    account.logout.assert_called_once_with()
-    mocked_auth_service.startAuthorizationFlow.assert_called_once_with(True)
-
-    account._onLoginStateChanged(False)
-    account.loginWithForcedLogout()
-    # If we are not logged in previously, logout shouldn't be called again
+    # Attempting to log in with force_logout_before_login as True should call the logout before calling the
+    # startAuthorizationFlow(True).
+    account.login(force_logout_before_login=True)
     account.logout.assert_called_once_with()
+    mocked_auth_service.startAuthorizationFlow.assert_called_with(True)
     assert mocked_auth_service.startAuthorizationFlow.call_count == 2