Implemented request handler and error handling in frontend and added cancellation event to telemetry

lib/telemetry.ts

@@ -9,7 +9,8 @@ export const telemetryEventTypes = {
     pageView: 'page_view',
     dateSelected: 'date_selected',
     timeSelected: 'time_selected',
-    bookingConfirmed: 'booking_confirmed'
+    bookingConfirmed: 'booking_confirmed',
+    bookingCancelled: 'booking_cancelled'
 }
 
 /**

pages/cancel/[uid].tsx

@@ -8,6 +8,7 @@ import isSameOrBefore from 'dayjs/plugin/isSameOrBefore';
 import isBetween from 'dayjs/plugin/isBetween';
 import utc from 'dayjs/plugin/utc';
 import timezone from 'dayjs/plugin/timezone';
+import {collectPageParameters, telemetryEventTypes, useTelemetry} from "../../lib/telemetry";
 
 dayjs.extend(isSameOrBefore);
 dayjs.extend(isBetween);
@@ -21,8 +22,39 @@ function classNames(...classes) {
 export default function Type(props) {
     // Get router variables
     const router = useRouter();
+    const { uid } = router.query;
 
     const [is24h, setIs24h] = useState(false);
+    const [loading, setLoading] = useState(false);
+    const [error, setError] = useState(null);
+    const telemetry = useTelemetry();
+
+    const cancellationHandler = async (event) => {
+        setLoading(true);
+
+        let payload = {
+            uid: uid
+        };
+
+        telemetry.withJitsu(jitsu => jitsu.track(telemetryEventTypes.bookingCancelled, collectPageParameters()));
+        const res = await fetch(
+            '/api/cancel',
+            {
+                body: JSON.stringify(payload),
+                headers: {
+                    'Content-Type': 'application/json'
+                },
+                method: 'POST'
+            }
+        );
+
+        if(res.status >= 200 && res.status < 300) {
+            router.push('/cancel/success');
+        } else {
+            setLoading(false);
+            setError("An error with status code " + res.status + " occurred. Please try again later.");
+        }
+    }
 
     return (
         <div>
@@ -43,7 +75,17 @@ export default function Type(props) {
                             <div
                                 className="inline-block align-bottom bg-white rounded-lg px-4 pt-5 pb-4 text-left overflow-hidden shadow-xl transform transition-all sm:my-8 sm:align-middle sm:max-w-sm sm:w-full sm:p-6"
                                 role="dialog" aria-modal="true" aria-labelledby="modal-headline">
-                                <div>
+                                {error && <div>
+                                    <div className="mx-auto flex items-center justify-center h-12 w-12 rounded-full bg-red-100">
+                                        <XIcon className="h-6 w-6 text-red-600" />
+                                    </div>
+                                    <div className="mt-3 text-center sm:mt-5">
+                                        <h3 className="text-lg leading-6 font-medium text-gray-900" id="modal-title">
+                                            {error}
+                                        </h3>
+                                    </div>
+                                </div>}
+                                {!error && <div>
                                     <div
                                         className="mx-auto flex items-center justify-center h-12 w-12 rounded-full bg-red-100">
                                         <XIcon className="h-6 w-6 text-red-600"/>
@@ -54,7 +96,7 @@ export default function Type(props) {
                                         </h3>
                                         <div className="mt-2">
                                             <p className="text-sm text-gray-500">
-                                                You can also reschedule it with the button below.
+                                                Instead, you could also reschedule it.
                                             </p>
                                         </div>
                                         <div className="mt-4 border-t border-b py-4">
@@ -69,14 +111,14 @@ export default function Type(props) {
                                             </p>
                                         </div>
                                     </div>
-                                </div>
+                                </div>}
                                 <div className="mt-5 sm:mt-6 text-center">
                                     <div className="mt-5">
-                                        <button type="button"
+                                        <button onClick={cancellationHandler} disabled={loading} type="button"
                                                 className="inline-flex items-center justify-center px-4 py-2 border border-transparent font-medium rounded-md text-red-700 bg-red-100 hover:bg-red-200 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-red-500 sm:text-sm mx-2 btn-white">
                                             Cancel
                                         </button>
-                                        <button type="button"
+                                        <button onClick={() => router.push('/reschedule/' + uid)} disabled={loading} type="button"
                                                 className="inline-flex items-center justify-center px-4 py-2 border border-transparent font-medium rounded-md text-gray-700 bg-gray-100 hover:bg-gray-200 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-gray-500 sm:text-sm mx-2 btn-white">
                                             Reschedule
                                         </button>