feat(cloud): add find-workspace and email verification endpoints (#2020)

* feat: add find-workspace and email verification endpoints
* sync

apps/server/src/core/auth/auth.util.ts

@@ -1,5 +1,37 @@
 import { BadRequestException } from '@nestjs/common';
 import { Workspace } from '@docmost/db/types/entity.types';
+import { createHmac } from 'node:crypto';
+
+export function computeEmailSignature(
+  email: string,
+  workspaceId: string,
+  appSecret: string,
+): string {
+  return createHmac('sha256', appSecret)
+    .update(`${email.toLowerCase()}:${workspaceId}`)
+    .digest('hex');
+}
+
+export function throwIfEmailNotVerified(opts: {
+  isCloud: boolean;
+  emailVerifiedAt: Date | null;
+  email: string;
+  workspaceId: string;
+  appSecret: string;
+}): void {
+  if (!opts.isCloud || opts.emailVerifiedAt) return;
+
+  const emailSignature = computeEmailSignature(
+    opts.email,
+    opts.workspaceId,
+    opts.appSecret,
+  );
+  throw new BadRequestException({
+    message:
+      'Please verify your email address. Check your inbox for the verification link.',
+    emailSignature,
+  });
+}
 
 export function validateSsoEnforcement(workspace: Workspace) {
   if (workspace.enforceSso) {