Walkin appointment booking implemented in Appointment Details page

lib/pages/MyAppointments/AppointmentDetails.dart

@@ -10,6 +10,7 @@ import 'package:diplomaticquarterapp/models/Appointments/toDoCountProviderModel.
 import 'package:diplomaticquarterapp/models/header_model.dart';
 import 'package:diplomaticquarterapp/pages/BookAppointment/BookConfirm.dart';
 import 'package:diplomaticquarterapp/pages/BookAppointment/components/DocAvailableAppointments.dart';
+import 'package:diplomaticquarterapp/pages/BookAppointment/waiting_appointment/waiting_appointment_info.dart';
 import 'package:diplomaticquarterapp/pages/MyAppointments/SchedulePage.dart';
 import 'package:diplomaticquarterapp/services/appointment_services/GetDoctorsList.dart';
 import 'package:diplomaticquarterapp/services/clinic_services/get_clinic_service.dart';
@@ -299,10 +300,52 @@ class _AppointmentDetailsState extends State<AppointmentDetails> with SingleTick
   }
 
   void goToBookConfirm() {
-    if (DocAvailableAppointments.areSlotsAvailable)
-      navigateToBookConfirm(context);
-    else
-      AppToast.showErrorToast(message: TranslationBase.of(context).selectSlot);
+    if (DocAvailableAppointments.selectedTime == TranslationBase.of(context).waitingAppointment) {
+      canPayForWalkInAppointment();
+    } else {
+      if (DocAvailableAppointments.areSlotsAvailable)
+        navigateToBookConfirm(context);
+      else
+        AppToast.showErrorToast(message: TranslationBase.of(context).selectSlot);
+    }
+  }
+
+  canPayForWalkInAppointment() {
+    DoctorsListService service = new DoctorsListService();
+    GifLoaderDialogUtils.showMyDialog(context);
+    service.canPayForWalkInAppointment(widget.appo.projectID!, widget.appo.clinicID!, widget.appo.doctorID!).then((res) {
+      GifLoaderDialogUtils.hideDialog(context);
+      navigateToWaitingAppointment(context);
+    }).catchError((err) {
+      GifLoaderDialogUtils.hideDialog(context);
+      AppToast.showErrorToast(message: err);
+      print(err);
+    });
+  }
+
+  Future navigateToWaitingAppointment(context) async {
+    DoctorList doctor = new DoctorList();
+    doctor.name = widget.appo.doctorNameObj;
+    doctor.clinicID = widget.appo.clinicID;
+    doctor.projectID = widget.appo.projectID;
+    doctor.doctorID = widget.appo.doctorID;
+    doctor.clinicName = widget.appo.clinicName;
+    doctor.projectName = widget.appo.projectName;
+    doctor.doctorTitle = widget.appo.doctorTitle;
+    doctor.doctorImageURL = widget.appo.doctorImageURL;
+    doctor.speciality = widget.appo.doctorSpeciality;
+    doctor.nationalityFlagURL = "";
+    doctor.doctorRate = widget.appo.doctorRate;
+    doctor.noOfPatientsRate = widget.appo.noOfPatientsRate;
+
+    projectViewModel?.setWaitingAppointmentProjectID(widget.appo.projectID!);
+    projectViewModel?.setWaitingAppointmentDoctor(doctor);
+    Navigator.push(
+      context,
+      FadePage(
+        page: WaitingAppointmentInfo(),
+      ),
+    );
   }
 
   Future navigateToBookConfirm(context) async {