Enforce n - 1 deletion requirement server side

functions/api/events-team/events/[id].ts

@@ -2,23 +2,39 @@ import { jsonError } from "../../../common.js";
 
 export async function onRequestDelete(context: RequestContext) {
   const eventId = context.params.id as string;
-  const eventData = await context.env.D1.prepare(
-    "SELECT created_by FROM events WHERE id = ?;",
+  const eventData:
+    | ({
+        [k: string]: number;
+      } & { created_by: string })
+    | null = await context.env.D1.prepare(
+    "SELECT created_by, day, month, year FROM events WHERE id = ?;",
   )
     .bind(eventId)
     .first();
 
   if (!eventData) return jsonError("No event exists with that ID", 404);
 
   const { current_user: currentUser } = context.data;
+  const isETM = [1 << 4, 1 << 12].find((int) => currentUser.permissions & int);
 
-  if (
-    eventData.created_by !== currentUser.id &&
-    ![1 << 4, 1 << 12].find((int) => currentUser.permissions & int)
-  )
+  if (eventData.created_by !== currentUser.id && !isETM)
     return jsonError("You are not authorized to delete that event", 403);
 
-  await context.env.DATA.delete(`event_${eventId}`);
+  const now = new Date();
+  now.setUTCHours(0, 0, 0, 0);
+
+  const eventDate = new Date(
+    eventData.year,
+    eventData.month - 1,
+    eventData.day,
+  );
+
+  if (!isETM && now.getTime() <= eventDate.getTime())
+    return jsonError(
+      "Event cannot be deleted on or after the scheduled date",
+      403,
+    );
+
   await context.env.D1.prepare("DELETE FROM events WHERE id = ?;")
     .bind(eventId)
     .run();