I’m with Marco: Nice scabbard!
The hilt most certainly is a non-traditional concoction. This should be easy to replace.
The blade deserves a thorough cleaning. It originally was a straight blade that got altered by stock removal to become somewhat undulated - if this was done by any Indonesian, he (or she) should be exiled!
Sorry for the bad news. If you hide the blade in the (cleaned) scabbard and get a suitable hilt+pendokok (search for Bugis on this forum and especially look for pieces with very similar scabbards), this still will make a nice display. Don’t worry, most of us have done worse with our first keris...
Regards,
Kai