redirect with google oauth

app/javascript/elements/set_timezone.js

@@ -1,7 +1,21 @@
 export default class extends HTMLElement {
   connectedCallback () {
     if (this.dataset.inputId) {
-      document.getElementById(this.dataset.inputId).value = Intl.DateTimeFormat().resolvedOptions().timeZone
+      const timezone = Intl.DateTimeFormat().resolvedOptions().timeZone
+
+      if (this.dataset.params === 'true') {
+        const params = new URLSearchParams(this.input.value)
+
+        params.set('timezone', timezone)
+
+        this.input.value = params.toString()
+      } else {
+        this.input.value = timezone
+      }
     }
   }
+
+  get input () {
+    return document.getElementById(this.dataset.inputId)
+  }
 }