Reorganized the module structure.

src/graph/app.js

@@ -0,0 +1,32 @@
+/**
+ * Get an Azure application by its display name.
+ *
+ * @param { Object } client 
+ * @param { string } appName 
+ * @returns 
+ */
+export async function getApp(client, appName) {
+  const result = await client
+    .api("/applications")
+    .filter(`displayName eq '${appName}'`)
+    .get();
+
+  // Return the first application found or null if none exists
+  return result.value.length > 0 ? result.value[0] : null;
+}
+
+export async function createApp(client, appName) {
+  const app = await client.api("/applications").post({
+    displayName: appName,
+  });
+
+  if (!app || !app.appId) {
+    throw new Error("Failed to create application");
+  }
+
+  return app;
+}
+
+export async function deleteApp(client, appObjectId) {
+  await client.api(`/applications/${appObjectId}`).delete();
+}

src/graph/auth.js

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+import { loginInteractive } from "../azure/index.js";
+import { Client } from "@microsoft/microsoft-graph-client";
+
+/**
+ * Initialize and return a Microsoft Graph client
+ * along with the authentication token.
+ *
+ * @param { Object } options - Options for authentication
+ * @param { string } options.tenantId - The Azure AD tenant ID
+ * @param { string } options.clientId - The Azure AD client ID
+ * @returns { Object } An object containing the Graph API token and client
+ */
+export async function getGraphClient({ tenantId, clientId }) {
+  const graphApiToken = await loginInteractive({
+    tenantId,
+    clientId,
+    scopes: ["https://graph.microsoft.com/.default"],
+  });
+
+  const client = Client.init({
+    authProvider: (done) => {
+      done(null, graphApiToken.accessToken);
+    },
+  });
+
+  return { graphApiToken, client };
+}

src/graph/index.d.ts

@@ -0,0 +1 @@
+//

src/graph/index.js

@@ -0,0 +1,3 @@
+export * from "./auth.js";
+export * from "./app.js";
+export * from "./sp.js";

src/graph/sp.js

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+export async function getServicePrincipal(client, appId) {
+  const result = await client
+    .api("/servicePrincipals")
+    .filter(`appId eq '${appId}'`)
+    .get();
+
+  // Return the first service principal found or null if none exists
+  return result.value.length > 0 ? result.value[0] : null;
+}
+
+export async function createSp(client, appId) {
+  const sp = await client.api("/servicePrincipals").post({
+    appId,
+  });
+
+  if (!sp || !sp.id) {
+    throw new Error("Failed to create service principal");
+  }
+
+  return sp;
+}
+
+export async function deleteSp(client, spId) {
+  await client.api(`/servicePrincipals/${spId}`).delete();
+}