finalized event cancel logic

ui/src/api/calendar.ts

@@ -86,12 +86,20 @@ export async function editCalendarEvent(eventData: CalendarEvent) {
 
 }
 
-export async function cancelCalendarEvent(eventID: number) {
+export async function setCancelCalendarEvent(eventID: number, cancel: boolean) {
+    let route = cancel ? "cancel" : "uncancel";
 
-}
-
-export async function adminCancelCalendarEvent(eventID: number) {
+    console.log(route);
+    let res = await fetch(`${addr}/calendar/${eventID}/${route}`, {
+        method: "POST",
+        credentials: "include"
+    });
 
+    if (res.ok) {
+        return;
+    } else {
+        throw new Error(`Failed to set attendance: ${res.status} ${res.statusText}`);
+    }
 }
 
 export async function setCalendarEventAttendance(eventID: number, state: CalendarAttendance) {