1 files changed, 22 insertions, 0 deletions
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