feat: email verification for registration (#599)

packages/lib/server-only/user/generate-confirmation-token.ts

@@ -0,0 +1,41 @@
+import crypto from 'crypto';
+
+import { prisma } from '@documenso/prisma';
+
+import { ONE_HOUR } from '../../constants/time';
+import { sendConfirmationEmail } from '../auth/send-confirmation-email';
+
+const IDENTIFIER = 'confirmation-email';
+
+export const generateConfirmationToken = async ({ email }: { email: string }) => {
+  const token = crypto.randomBytes(20).toString('hex');
+
+  const user = await prisma.user.findFirst({
+    where: {
+      email: email,
+    },
+  });
+
+  if (!user) {
+    throw new Error('User not found');
+  }
+
+  const createdToken = await prisma.verificationToken.create({
+    data: {
+      identifier: IDENTIFIER,
+      token: token,
+      expires: new Date(Date.now() + ONE_HOUR),
+      user: {
+        connect: {
+          id: user.id,
+        },
+      },
+    },
+  });
+
+  if (!createdToken) {
+    throw new Error(`Failed to create the verification token`);
+  }
+
+  return sendConfirmationEmail({ userId: user.id });
+};