FCM deep linking to URLs

[wolak88]

Describe the bug
I can't find a way to send appropriate body to fcm push notifications to get linking to particular URL working. I'm missing:

"webpush": {
      "fcm_options": {
        "link": "https://dummypage.com"
      }
    }

Here is the documentation:
https://firebase.google.com/docs/cloud-messaging/js/receive#setting_notification_options_in_the_send_request

To Reproduce
Create any notification and try to use notification to move to some part of your application.

Expected behavior
After clicking the notification I want to be redirected to particular page.

Logs and other output
ActiveModel::UnknownAttributeError: unknown attribute 'webpush' for Rpush::Client::ActiveRecord::Gcm::Notification.

[aried3r]

Hey @wolak88! Rpush sadly doesn't yet support the current FCM protocol, see also #588.

It does support the old, legacy HTTP protocol. You can find the documentation here.

In Table 2c on that page you can find the available payloads for web. They are, as of writing:

Parameter	Usage	Description
title	Optional, string	The notification's title.
body	Optional, string	The notification's body text.
icon	Optional, string	The URL to use for the notification's icon.
click_action	Optional, string	The action associated with a user click on the notification.

[duleorlovic]

It works with click_action. Note that if it s a URL, it has to be on the same domain. If there is a inactive tab opened for that domain, it will switch to it (keeping the current page). If there is no tab opened for that domain, it will open a URL in a new tab.