Take cookies domain from data-tnacookiesdomain on <html> if available

nationalarchives · Dec 9, 2024 · af6058d · af6058d
1 parent 5b742f9
commit af6058d
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -8,6 +8,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased](https://github.com/nationalarchives/tna-frontend/compare/v0.3.0...HEAD)
 
 ### Added
+
+- The `data-tnacookiesdomain` attribute of the `<html>` element can be used to define the domain for cookies
+
 ### Changed
 
 - Shifted and split hero components no longer assume a contrasted background by default

diff --git a/src/nationalarchives/lib/cookies.mjs b/src/nationalarchives/lib/cookies.mjs
@@ -83,7 +83,7 @@ export default class Cookies {
   constructor(options = {}) {
     const {
       extraPolicies = [],
-      domain = "",
+      domain = null,
       path = "/",
       secure = true,
       policiesKey = "cookies_policy",
@@ -96,7 +96,12 @@ export default class Cookies {
       return window.TNAFrontendCookies;
     }
     this.extraPolicies = extraPolicies;
-    this.domain = domain;
+    if (domain === null) {
+      this.domain =
+        document.documentElement.getAttribute("data-tnacookiesdomain") || "";
+    } else {
+      this.domain = domain;
+    }
     this.path = path;
     this.secure = secure;
     this.policiesKey = policiesKey;