first commit

calcom/packages/app-store/paypal/lib/updateAppCredentials.validator.ts

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+import { z } from "zod";
+
+import type { UpdateAppCredentialsOptions } from "@calcom/trpc/server/routers/viewer/apps/updateAppCredentials.handler";
+
+import Paypal from "./Paypal";
+
+const schema = z.object({
+  credentialId: z.coerce.number(),
+  key: z.object({
+    client_id: z.string(),
+    secret_key: z.string(),
+  }),
+});
+
+const handlePaypalValidations = async ({ input }: UpdateAppCredentialsOptions) => {
+  const validated = schema.safeParse(input);
+  if (!validated.success) throw new Error("Invalid input");
+  const { key } = validated.data;
+
+  // Test credentials before saving
+  const paypalClient = new Paypal({ clientId: key.client_id, secretKey: key.secret_key });
+  const test = await paypalClient.test();
+  if (!test) throw new Error("Provided credentials failed to authenticate");
+
+  // Delete all existing webhooks
+  const webhooksToDelete = await paypalClient.listWebhooks();
+  if (webhooksToDelete) {
+    const promises = webhooksToDelete.map((webhook) => paypalClient.deleteWebhook(webhook));
+    await Promise.all(promises);
+  }
+
+  // Create webhook for this installation
+  const webhookId = await paypalClient.createWebhook();
+  if (!webhookId) {
+    // @TODO: make a button that tries to create the webhook again
+    console.error("Failed to create webhook", webhookId);
+    throw new Error("Failed to create webhook");
+  }
+
+  return {
+    client_id: key.client_id,
+    secret_key: key.secret_key,
+    webhook_id: webhookId,
+  };
+};
+
+export default handlePaypalValidations;