notifications - adds a test if a image-url source contains a GIF file

[BitWuehler]

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Adds a test if a image-url source contains a GIF file

Summary

Today I wanted to show a GIF in a notification an Android 14. I saw that this was added befor two weeks, Sadly this only works with URLs that ends with ".gif". Some URLs don't have the filename in the URL so i added a http header check for that.

Link to pull request in Documentation repository

The Documentation should be fine. The function is already described there.

Edit: I just checked the generated APK on my phone. Now the GIF works fine in notifications also with an URL without the filename.

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[jpelgrom]

I think you've misunderstood what I was saying... There is a requiresAuth parameter that should be handled. At this point, paths are never relative because it is transformed here. If you're saying there is no way to serve a GIF from one of HA's built in proxies, that's also fine! No need for these complicated checks I think.

[BitWuehler]

I removed the Bytecheck now. The internal proxies also use http so bytecheck is not necessary. Just have to figure out how to check the internal url correctly now...

@jpelgrom

[jpelgrom]

As you are clearly still developing I'm going to change this to draft, mark it as ready once you're done :)