From 2afb59d4a2fb757b46d3842b92919869ef495a65 Mon Sep 17 00:00:00 2001
From: James Collins <james.collins@outlook.com.au>
Date: Sun, 5 Mar 2023 20:22:21 +1000
Subject: [PATCH] added

---
 resources/js/helpers/seo.ts | 53 +++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 resources/js/helpers/seo.ts

diff --git a/resources/js/helpers/seo.ts b/resources/js/helpers/seo.ts
new file mode 100644
index 0000000..38df10d
--- /dev/null
+++ b/resources/js/helpers/seo.ts
@@ -0,0 +1,53 @@
+export interface SEOTags {
+    title: string;
+    description: string;
+    keywords: string[];
+    robots: {
+        index: boolean;
+        follow: boolean;
+    };
+    url: string;
+    image: string;
+}
+
+export const updateSEOTags = (tags: SEOTags): void => {
+    const updateTag = (
+        tag: string,
+        queryAttribName: string,
+        queryAttribValue: string,
+        updateAttribName: string,
+        updateAttribValue: string
+    ) => {
+        const existingTag = document.querySelector(
+            `${tag}[${queryAttribName}="${queryAttribValue}"]`
+        );
+        if (existingTag) {
+            existingTag.setAttribute(updateAttribName, updateAttribValue);
+        } else {
+            const metaTag = document.createElement(tag);
+            metaTag.setAttribute(queryAttribName, queryAttribValue);
+            metaTag.setAttribute(updateAttribName, updateAttribValue);
+            document.head.appendChild(metaTag);
+        }
+    };
+
+    const robotsIndexValue = tags.robots.index ? "index" : "noindex";
+    const robotsFollowValue = tags.robots.follow ? "follow" : "nofollow";
+    const robotsValue = `${robotsIndexValue}, ${robotsFollowValue}`;
+
+    document.title = `STEMMechanics | ${tags.title}`;
+    updateTag("meta", "name", "description", "content", tags.description);
+    updateTag("meta", "name", "keywords", "content", tags.keywords.join(", "));
+    updateTag("meta", "name", "robots", "content", robotsValue);
+    updateTag("link", "rel", "canonical", "href", tags.url);
+    updateTag("meta", "property", "og:title", "content", tags.title);
+    updateTag(
+        "meta",
+        "property",
+        "og:description",
+        "content",
+        tags.description
+    );
+    updateTag("meta", "property", "og:image", "content", tags.image);
+    updateTag("meta", "property", "og:url", "content", tags.url);
+};