Migrated to TypeScript.

src/graph/sp.ts

@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: MIT
+
+type GraphResult<T = Record<string, unknown>> = {
+  value?: T[];
+};
+
+export async function getServicePrincipal(client: any, appId: string): Promise<Record<string, unknown> | null> {
+  const result = await client
+    .api("/servicePrincipals")
+    .filter(`appId eq '${appId}'`)
+    .get() as GraphResult;
+
+  return Array.isArray(result.value) && result.value.length > 0 ? result.value[0] : null;
+}
+
+export async function createSp(client: any, appId: string): Promise<Record<string, unknown>> {
+  const sp = await client.api("/servicePrincipals").post({
+    appId,
+  }) as Record<string, unknown>;
+
+  if (!sp || typeof sp.id !== "string") {
+    throw new Error("Failed to create service principal");
+  }
+
+  return sp;
+}
+
+export async function deleteSp(client: any, spId: string): Promise<void> {
+  await client.api(`/servicePrincipals/${spId}`).delete();
+}