feat: email verification for registration (#599)

packages/lib/server-only/user/verify-email.ts

@@ -0,0 +1,70 @@
+import { DateTime } from 'luxon';
+
+import { prisma } from '@documenso/prisma';
+
+import { sendConfirmationToken } from './send-confirmation-token';
+
+export type VerifyEmailProps = {
+  token: string;
+};
+
+export const verifyEmail = async ({ token }: VerifyEmailProps) => {
+  const verificationToken = await prisma.verificationToken.findFirst({
+    include: {
+      user: true,
+    },
+    where: {
+      token,
+    },
+  });
+
+  if (!verificationToken) {
+    return null;
+  }
+
+  // check if the token is valid or expired
+  const valid = verificationToken.expires > new Date();
+
+  if (!valid) {
+    const mostRecentToken = await prisma.verificationToken.findFirst({
+      where: {
+        userId: verificationToken.userId,
+      },
+      orderBy: {
+        createdAt: 'desc',
+      },
+    });
+
+    // If there isn't a recent token or it's older than 1 hour, send a new token
+    if (
+      !mostRecentToken ||
+      DateTime.now().minus({ hours: 1 }).toJSDate() > mostRecentToken.createdAt
+    ) {
+      await sendConfirmationToken({ email: verificationToken.user.email });
+    }
+
+    return valid;
+  }
+
+  const [updatedUser, deletedToken] = await prisma.$transaction([
+    prisma.user.update({
+      where: {
+        id: verificationToken.userId,
+      },
+      data: {
+        emailVerified: new Date(),
+      },
+    }),
+    prisma.verificationToken.deleteMany({
+      where: {
+        userId: verificationToken.userId,
+      },
+    }),
+  ]);
+
+  if (!updatedUser || !deletedToken) {
+    throw new Error('Something went wrong while verifying your email. Please try again.');
+  }
+
+  return !!updatedUser && !!deletedToken;
+};