[Replacing outdoor light with wifi CCTV Camera]

Hello. I have an outdoor light that doesn’t work, but does have a live cable to it through the wall. I’d like to replace it with an outdoor CCTV camera. I’ve seen some motion sensor cameras that save to sd card and allow you to view remotely via wifi which would be ideal. However if I understand correctly they look like they have their own power supply  and adaptor you have to use, rather than being able to wire in an existing cable.

This is one example

https://www.amazon.co.uk/gp/product/B073GSSGWB/ref=ask_ql_qh_dp_hza

 

Can anyone recommend a product that might do the trick? I already have a separate security light that works so only need the camera. I'd rather make use of the existing power cable rather than drill more holes through the wall

 

Thanks in advance for any advice