From e13691abb36c69662777a0738a2b75c445108055 Mon Sep 17 00:00:00 2001
From: mjolly <mjolly@scaleway.com>
Date: Tue, 16 Dec 2025 16:36:15 +0100
Subject: [PATCH] feat: add webhosting username email regex

---
 .changeset/modern-brooms-open.md           |  5 +++++
 packages/regex/src/__tests__/index.test.ts | 20 ++++++++++++++++++++
 packages/regex/src/index.ts                |  4 ++++
 3 files changed, 29 insertions(+)
 create mode 100644 .changeset/modern-brooms-open.md

diff --git a/.changeset/modern-brooms-open.md b/.changeset/modern-brooms-open.md
new file mode 100644
index 000000000..6ef759923
--- /dev/null
+++ b/.changeset/modern-brooms-open.md
@@ -0,0 +1,5 @@
+---
+"@scaleway/regex": minor
+---
+
+feat: add webhosting username email regex
diff --git a/packages/regex/src/__tests__/index.test.ts b/packages/regex/src/__tests__/index.test.ts
index 5d5e8f926..42798407b 100644
--- a/packages/regex/src/__tests__/index.test.ts
+++ b/packages/regex/src/__tests__/index.test.ts
@@ -54,6 +54,7 @@ import {
   uppercaseBasicSubdomain,
   url,
   uuid,
+  webhostingUsernameEmailRegex,
 } from '..'
 
 const alphanumDashDotsText = 'testwithdashdots-.'
@@ -1167,6 +1168,25 @@ describe('@regex', () => {
     })
   })
 
+  describe('webhostingUsernameEmailRegex', () => {
+    test.each([
+      ['test', true],
+      ['test_test', true],
+      ['test-test', true],
+      ['test.test', true],
+      ['test.test.', false],
+      ['test..test', false],
+      ['test-test-', false],
+      ['test_test_', false],
+      ['test.test.', false],
+      ['test..test', false],
+      ['test..test', false],
+      ['test..test', false],
+    ])('should match regex %s to be %s', (string, expected) => {
+      expect(webhostingUsernameEmailRegex.test(string)).toBe(expected)
+    })
+  })
+
   describe('uuid', () => {
     test.each([
       [asciiLetters, false],
diff --git a/packages/regex/src/index.ts b/packages/regex/src/index.ts
index 270c4f28a..8ec88d254 100644
--- a/packages/regex/src/index.ts
+++ b/packages/regex/src/index.ts
@@ -102,3 +102,7 @@ export const password = /^(?!@)[^`]*$/
 // A kafka username contains lowercase letters and numbers, with each segment starting and ending with a letter or number. Hyphens are only allowed in the middle of segments. Example: "username", "user-name", "my-group.user-name"
 export const kafkaUsernameRegex =
   /^[a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*$/
+
+// The username cannot begin or end with a period, cannot contain two consecutive periods, and can only contain letters, numbers, periods, hyphens, and underscores. Example: "test", "test_test", "test-test"
+export const webhostingUsernameEmailRegex =
+  /^(?!.*\.\.)[a-zA-Z0-9_-][a-zA-Z0-9._-]*[a-zA-Z0-9_-]$/