implemented LOA cancelling and extensioning

ui/src/api/loa.ts

@@ -90,7 +90,6 @@ export async function getLoaTypes(): Promise<LOAType[]> {
 };
 
 export async function getLoaPolicy(): Promise<string> {
-    //@ts-ignore
     const res = await fetch(`${addr}/loa/policy`, {
         method: "GET",
         credentials: 'include',
@@ -106,3 +105,34 @@ export async function getLoaPolicy(): Promise<string> {
         return null;
     }
 }
+
+export async function cancelLOA(id: number, admin: boolean = false) {
+    let route = admin ? 'adminCancel' : 'cancel';
+    const res = await fetch(`${addr}/loa/${route}/${id}`, {
+        method: "POST",
+        credentials: 'include',
+    });
+
+    if (res.ok) {
+        return
+    } else {
+        throw new Error("Could not cancel LOA");
+    }
+}
+
+export async function extendLOA(id: number, to: Date) {
+    const res = await fetch(`${addr}/loa/extend/${id}`, {
+        method: "POST",
+        credentials: 'include',
+        body: JSON.stringify({ to }),
+        headers: {
+            "Content-Type": "application/json",
+        }
+    });
+
+    if (res.ok) {
+        return
+    } else {
+        throw new Error("Could not extend LOA");
+    }
+}