Fix unable to get signal uuid and password (#125)

src/sticker_convert/cli.py

@@ -436,6 +436,7 @@ def get_opt_cred(self, args: Namespace) -> CredOption:
 
         if args.signal_get_auth:
             m = GetSignalAuth(cb_msg=self.cb.msg, cb_ask_str=self.cb.ask_str)
+            m.launch_signal_desktop()
 
             uuid, password = None, None
             while True:

src/sticker_convert/gui_components/windows/signal_get_auth_window.py

@@ -69,6 +69,7 @@ def cb_login(self):
 
     def cb_login_thread(self, *args: Any):
         m = GetSignalAuth(cb_msg=self.gui.cb_msg, cb_ask_str=self.cb_ask_str_signal)
+        m.launch_signal_desktop()
 
         uuid, password = None, None
         while Toplevel.winfo_exists(self):

src/sticker_convert/utils/auth/get_signal_auth.py

@@ -99,6 +99,8 @@ def get_local_chromedriver(
             chromedriver_which = shutil.which("chromedriver")
             if chromedriver_which:
                 chromedriver_path = Path(chromedriver_which)
+            else:
+                chromedriver_path = None
 
         if chromedriver_path:
             status, output_str = RunBin.run_cmd(
@@ -205,11 +207,6 @@ def launch_signal(
         self.driver = webdriver.Chrome(options=options, service=service)
 
     def get_cred(self) -> tuple[Optional[str], Optional[str]]:
-        success = self.launch_signal_desktop()
-
-        if not success:
-            return None, None
-
         # https://stackoverflow.com/a/73456344
         uuid: Optional[str] = None
         password: Optional[str] = None
@@ -231,8 +228,8 @@ def get_cred(self) -> tuple[Optional[str], Optional[str]]:
         except JavascriptException:
             pass
 
-        assert isinstance(uuid, str)
-        assert isinstance(password, str)
+        assert uuid is None or isinstance(uuid, str)
+        assert password is None or isinstance(password, str)
         return uuid, password
 
     def close(self):