E-Signature API Webhooks: Get Notified the Instant a Document Is Signed

// app/api/webhooks/signing/route.ts
import { NextRequest, NextResponse } from "next/server";

export async function POST(req: NextRequest) {
  const body = await req.json();
  const { event, document_id, signer_email, signed_at } = body;

  switch (event) {
    case "document.signed":
      // Update your database
      await db.contract.update({
        where: { documentId: document_id },
        data: { status: "SIGNED", signedAt: signed_at },
      });
      // Trigger next workflow
      await startOnboarding(signer_email);
      break;

    case "document.viewed":
      await notifySalesTeam(document_id, signer_email);
      break;

    case "document.declined":
      await alertAccountManager(document_id);
      break;
  }

  return NextResponse.json({ received: true }, { status: 200 });
}