From d4280d1fda2f4809274793e7bd49f484f57a883e Mon Sep 17 00:00:00 2001
From: Parker <contact@pkrm.dev>
Date: Mon, 4 Nov 2024 21:00:42 -0600
Subject: Continue JWT implementation - add refresh token

---
 app/js/jwt.js | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 app/js/jwt.js

(limited to 'app/js/jwt.js')

diff --git a/app/js/jwt.js b/app/js/jwt.js
new file mode 100644
index 0000000..43c2e6c
--- /dev/null
+++ b/app/js/jwt.js
@@ -0,0 +1,22 @@
+function parseJwt (token) {
+    var base64Url = token.split('.')[1];
+    var base64 = base64Url.replace(/-/g, '+').replace(/_/g, '/');
+    var jsonPayload = decodeURIComponent(window.atob(base64).split('').map(function(c) {
+        return '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2);
+    }).join(''));
+
+    return JSON.parse(jsonPayload);
+}
+
+function isJwtExpired (token) {
+    var jwt = parseJwt(token);
+    return jwt.exp < Date.now() / 1000;
+}
+
+async function refreshAccessToken (refreshToken) {
+    const data = await fetch('/api/refresh', {
+        method: 'POST',
+        headers: {'Authorization': 'Bearer ' + refreshToken}
+    });
+    return data.access_token;
+}
\ No newline at end of file
-- 
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