soft depend barcode reader instead of hard depend

Author: timothywashburn

src/app_context.py

@@ -13,7 +13,8 @@ def __init__(self, sheets: ApiClient, traffic_light: TrafficLightApi):
         self.nav = None
         self.check_in = None
         self.account = None
-        self.dispatcher = None  # set by main.py after QApplication is created
+        self.dispatcher = None
+        self.has_barcode_scanner = False
         self._rfid_lock = threading.Lock()
         self._rfid: str = ""
 

src/controllers/check_in_controller.py

@@ -3,6 +3,7 @@
 from PyQt6.QtCore import QTimer
 
 from screens.user_welcome import UserWelcome
+from screens.transition_screen import TransitionScreen
 
 
 class CheckInController:
@@ -33,6 +34,12 @@ def _run_check_in(self, identifier, check_fn, welcome_message="Welcome back"):
         if status == "no_account":
             logging.info(f"No account found for {identifier}")
             self.ctx.traffic_light.request_red()
+            if not self.ctx.has_barcode_scanner:
+                self.ctx.nav.get_frame(TransitionScreen).display(
+                    "Looks like you don't have an account.\nUse the other kiosk to set one up!"
+                )
+                QTimer.singleShot(6000, self.ctx.nav.back_to_main)
+                return
             self.ctx.nav.go_to_create_account(
                 on_done=lambda: self._run_check_in(
                     identifier, check_fn, welcome_message="Thank you for registering"

src/main.py

@@ -75,6 +75,7 @@ def clear_and_return(ctx: AppContext):
     card_reader.start(reader)
 
     if usb.barcode:
+        ctx.has_barcode_scanner = True
         barcode_scanner = BarcodeScanner(usb.barcode)
         barcode_controller = BarcodeScannerController(ctx)
         barcode_controller.start(barcode_scanner)

src/screens/components/dev_overlay.py

@@ -10,6 +10,7 @@
 from screens.check_in_manual import CheckInManual
 from screens.qr_codes import QRCodes
 from screens.user_welcome import UserWelcome
+from screens.transition_screen import TransitionScreen
 
 _DEV_NAME  = "Dev User"
 _DEV_EMAIL = "devuser@ucsd.edu"
@@ -20,6 +21,12 @@
 
 def _sim_no_account_success(nav):
     nav.ctx.rfid = _DEV_RFID
+    if not nav.ctx.has_barcode_scanner:
+        nav.get_frame(TransitionScreen).display(
+            "Looks like you don't have an account.\nUse the other kiosk to set one up!"
+        )
+        QTimer.singleShot(6000, nav.back_to_main)
+        return
     def on_done():
         nav.ctx.traffic_light.request_green()
         nav.get_frame(UserWelcome).display_name(_DEV_NAME, _THANK_MSG)
@@ -28,6 +35,12 @@ def on_done():
 
 def _sim_no_account_needs_waiver(nav):
     nav.ctx.rfid = _DEV_RFID
+    if not nav.ctx.has_barcode_scanner:
+        nav.get_frame(TransitionScreen).display(
+            "Looks like you don't have an account.\nUse the other kiosk to set one up!"
+        )
+        QTimer.singleShot(6000, nav.back_to_main)
+        return
     nav.go_to_create_account(on_done=nav.go_to_sign_waiver)