I am pretty sure you won’t find a showerdelier on Ebay or at Amazon---or even at Archie McFees. I am very sure you don’t want one even if you could find one.
This indoor chandelier is not meant for outdoor installation and the fact that it was raining at the time of inspection only adds to the “sparkling & sparky” quality of the fixture. There is absolutely nothing positive to say about this installation and I certainly did not bother turning it on to see if it worked. I wish now that I had turned it on because that would have only added to the humor of it all.
Unfortunately for this installation it is not function that is the problem, it is what happens to electrical components that are not designed to be under water are allowed to be under water. Over time corrosion of components will occur and subsequent arching and overheating will be the result---qualities that do not bode well for the light fixture or any nearby flammable components.
Time for an electrician.
Charles Buell, Real Estate Inspections in Seattle