Subscribed users are not being unsubscribed

[phani1kumar]

Description

Unsubscribing from the messaging is not working. I've followed the https://github.com/Polymer/polycasts/tree/master/ep59-firebase-messaging polycast to create a subscription flow. Added the unsubscription in the else block as follows:

            toggleSubscription: function () {
                var requestPermission = this.$.subscribe.checked;
                if (requestPermission) {
                    this.$.messaging.requestPermission().then(() => {
                        console.log('user subscribed successfully!');
                    }, (err) => {
                        console.log('user subscribe failed :(', err);
                    });
                } else {
                    this.$.userToken.destroy();
                    console.log('user rejected permission');
                }
            },

Token gets deleted as expected when toggling the switch, but when I refresh the browser the user token gets registered again. Browser somehow remembers the permission acceptance from the user in the first place and proceeds without asking for the permission again

Expected outcome

During page load, it should not take the previous permission acceptance from the user! The state of acceptance shall be unset when the user has explicitly unsubscribed.

Actual outcome

the user is getting subscribed everytime I refresh the page

Steps to reproduce

Explained above in the description

Browsers Affected

• [x] Firefox