feat: enhance appointment logic with user authentication checks and project ID retrieval

lib/presentation/book_appointment/select_clinic_page.dart

@@ -1058,7 +1058,8 @@ class _SelectClinicPageState extends State<SelectClinicPage> {
             regionalViewModel.setBottomSheetState(AppointmentViaRegionState.DOCTOR_SELECTION);
             var appointmentsViewModel = Provider.of<BookAppointmentsViewModel>(context, listen: false);
             if (appointmentsViewModel.selectedClinic.clinicID == 253) {
-              appointmentsViewModel.setProjectID(regionalViewModel.selectedHospital?.patientDoctorAppointmentList!.first.iD?.toString() ?? "");
+              var id =getProjectId(regionalViewModel);
+              appointmentsViewModel.setProjectID(id);
               appointmentsViewModel.resetLaserData();
               appointmentsViewModel.getLaserClinic();
               regionalViewModel.handleLastStepForClinicForDentalAndLaser(appointmentsViewModel.selectedClinic.clinicID ?? -1);
@@ -1067,8 +1068,9 @@ class _SelectClinicPageState extends State<SelectClinicPage> {
             }
           } else if (regionalViewModel.regionBottomSheetType == RegionBottomSheetType.REGION_FOR_DENTAL_AND_LASER) {
             var appointmentsViewModel = Provider.of<BookAppointmentsViewModel>(context, listen: false);
+            var id =getProjectId(regionalViewModel);
             regionalViewModel.setBottomSheetState(AppointmentViaRegionState.DOCTOR_SELECTION);
-            appointmentsViewModel.setProjectID(regionalViewModel.selectedHospital?.hospitalList.first.iD?.toString() ?? "");
+            appointmentsViewModel.setProjectID(id);
             regionalViewModel.handleLastStepForClinicForDentalAndLaser(appointmentsViewModel.selectedClinic.clinicID ?? -1);
           }
         },
@@ -1379,4 +1381,17 @@ class _SelectClinicPageState extends State<SelectClinicPage> {
       callBackFunc: () {},
     );
   }
+
+  String getProjectId(AppointmentViaRegionViewmodel regionalViewModel) {
+    try {
+      if(regionalViewModel.selectedHospital?.patientDoctorAppointmentList?.isNotEmpty ?? false) {
+        return regionalViewModel.selectedHospital!.patientDoctorAppointmentList?.first.projectID?.toString() ?? "";
+      } else if(regionalViewModel.selectedHospital?.hospitalList.isNotEmpty ?? false) {
+        return regionalViewModel.selectedHospital!.hospitalList.first.iD?.toString() ?? "";
+      }
+    } on Exception catch (e) {
+
+    }
+    return "";
+  }
 }

lib/presentation/book_appointment/select_doctor_page.dart

@@ -53,7 +53,7 @@ class _SelectDoctorPageState extends State<SelectDoctorPage> {
         bookAppointmentsViewModel.getLiveCareDoctorsList();
       } else {
         if (bookAppointmentsViewModel.selectedClinic.clinicID == 17) {
-          if (appState.getAuthenticatedUser()!.age! > 12) {
+          if (appState.isAuthenticated && appState.getAuthenticatedUser()!.age! > 12) {
             bookAppointmentsViewModel.getDentalChiefComplaintDoctorsList();
           } else {
             bookAppointmentsViewModel.getDoctorsList(isNearest: false);

lib/presentation/book_appointment/widgets/appointment_calendar.dart

@@ -278,7 +278,7 @@ class _AppointmentCalendarState extends State<AppointmentCalendar> {
                     bookAppointmentsViewModel.setProjectID(bookAppointmentsViewModel.selectedDoctor.projectID.toString());
                     bookAppointmentsViewModel.setSelectedClinic(selectedClinic);
                     bookAppointmentsViewModel.setIsChiefComplaintsListLoading(true);
-                    if(appState.getAuthenticatedUser()!.age! > 12) {
+                    if(appState.isAuthenticated && appState.getAuthenticatedUser()!.age! > 12) {
                       Navigator.of(context).push(
                         CustomPageRoute(
                           page: DentalChiefComplaintsPage(),