Add SSR support for use_web_notification and use_service_worker

[maccesch]

• use_web_notification
• use_service_worker

[rakshith-ravi]

What do you have in mind for use_service_worker? I could take a stab at it

[maccesch]

Nothing really. I have no idea 😂 I'm not sure if it even makes sense to anything on the server for this. But if we can make sure that it doesn't panic on the server that's already better than now.

[rakshith-ravi]

Hmmm, how about this:

• Get the user-agent header
• If the user-agent header doesn't exist, return the struct that says Service worker is unsupported
• If it does, check it against https://github.com/kdy1/rust-caniuse to see if service workers are supported
• If it is supported, check if a /service-worker.js file exists (or is there any other variable to check?) for the file tree
• If that does exist as well, then it is considered supported. If not, unsupported. Very complex, I know, but since most of this runs on the server side, it shouldn't be too much of an issue.

Also, rust-caniuse embeds the entire data in the library through a build script, which is great for air gapped solutions and reliability, but it would certainly increase compile times significantly.

[maccesch]

As far as I understand this, the function is more about installing and using a concrete service worker which has to be done on the frontend anyway.

So I think if we can just make sure that you can run this function without having to put it inside a create_effect would already be enough.

I'm not convinced that all this extra work on the server would be worth it.

Or am I missing something?

[rakshith-ravi]

Hmmm, fair enough. I was thinking of also providing data if the service worker is supported, so that SSR can be rendered differently based on whether it is supported or not, but I think this should work too. What should be returned in the server side in the version you'd mentioned?

[maccesch]

I think this should work:

{
  registration: ServiceWorkerRegistrationError::NeverQueried,
  installing: false,
  waiting: false,
  active: false,
  check_for_update: || (),
  skip_waiting: || (),  
}