Detect auto wifi interface

[Infected]

I only have one question. I am working on a script and I want a variable with a command. Ddr command should make it easier for me and show me the wlan interface. since I build a script where it is often needed it would be nicer if there is something that the wifi recognizes automatically, the whole thing would then have to be output with $ {Wireless}. my question, how should I do it, tried everything, didn't make it, maybe someone can help me