SharePoint Online filename restrictions - and SharePoint Autofill

Hi everyone,

I'm working with SharePoint Online and trying autofill to generate SPO file titles so I can eventually use them a filename. As you might know SPO filenames know a few restrictions (invalid characters like `/ \ : * ? " < > |`, reserved names, path length limits, etc.), unfortunately syntex autofil is not aware of this. 

Has anyone ever tried the same, come around the same problem and how did you solve it. Especially since including all SPO restrictions, and filename limitations is not a feasible solution.