tips on how brexit has affected moving to Portugal

Hello please can anyone enlighten me on what is required now for a move to Portugal

we are looking at comparing with the requirements of Spain

what we would like to know is what type of visa is best for us

at the moment we are looking to hopefully purchase a property for use as a holiday home

then in a year or 3 we will be looking to move on a permanent basis

i understand what Spains process is but do not have any information for Portugal

All information or advice is very welcome

Regards

Dave Liz